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Numéro de publicationUS2819761 A
Type de publicationOctroi
Date de publication14 janv. 1958
Date de dépôt19 janv. 1956
Date de priorité19 janv. 1956
Numéro de publicationUS 2819761 A, US 2819761A, US-A-2819761, US2819761 A, US2819761A
InventeursPopham Jack L, Shock D Arcy A
Cessionnaire d'origineContinental Oil Co
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes: USPTO, Cession USPTO, Espacenet
Process of removing viscous oil from a well bore
US 2819761 A
Résumé  disponible en
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Revendications  disponible en
Description  (Le texte OCR peut contenir des erreurs.)

Jan. 14, 1958 J. L. P6PHAM ETAL 1 PROCESS OF REMOVING VISCOUS OIL FROM A WELL BORE Filed Jan. 19, 1956 IIQVENTORS ,1 1.. POPHAM 0. 4. SHOCK ATTORNEY PROCESS OF REMOVING VISCOUS OIL FROM A WELL BORE lack L. Popham and DArcy A. Shock, Ponca City, Okla, assignors to Continental Oil Company, Ponca City, Okla, a corporation of Delaware Application January 19, 1556, Serial No. 560,171

9 Claims. (Cl. 166-39) This invention relates to an improved process of recovering viscous oil from subsurface strata, and more particularly, but not by way of limitation, to an improved process of recovering viscous oil by utilizing a combination heat and gas drive. For the purpose of this specification and the appended claims, vsicous oil may be defined as liquid hydrocarbons entrained in any type of strata and not naturally flowable into a well bore trav ersing the strata.

In one aspect, this invention relates to what is commonly known as secondary recovery of oil which will not normally flow into a well bore, such as the heavy crude in sands, or oil in tar sands. Various methods of secondary recovery by the use of heat and/or gas drive have been proposed, but, to the best of applicants knowledge, none have proved economically feasible. One general type of such methods involves the circulation of a heated fluid, such as oil, gas or steam through the lower portion of a well bore in contact with a formation containing the entrained oil. Perhaps the greatest deficiency of these methods is the lack of penetration of heat through the formation. Ordinarily, only the formation in the immediate proximity of the well bore is effectively heated to reduce the viscosity of the oil and induce the oil to flow into the well bore.

Another type of proposed secondary recovery method utilizes two or more spaced well bores. In general, combustion is initiated in one well bore and driven through the formation to an adjacent well bore. In rather ideal formations, Where the formation is sufficiently permeable to permit pumping gas from one well to another, and where the well bores are closely spaced, such methods are effective in recovering a large portion of the oil which will not normally flow into the well bores. However, the use of two well bores unduly increases the cost of the method, and in many formations it is extremely diflicult to establish gas communication between the wells.

This invention is also useful in the removal of oil from oil shale. Present known methods for this purpose ordinarily involve the formation of horizontal tunnels through the shale, with or without interconnecting channels. Hot gas or an absorbent is circulated through the various passageways to heat the shale in the immediate vicinity of the passageways and provide a drainage of oil into the passageways for subsequent removal. It will be apparent that the formation of the passageways is an extremely expensive operation and only the oil in the immediate vicinity of the passageways is removed.

The present invention contemplates a novel process for removing viscous oil from a strata or formation through the use of a single well bore. Combustion is initiated in the top portion of the strata around the well bore, and the resulting flame front is moved downwardly around the well bore to progressively heat the strata. As the strata is heated, the entrained oil becomes less viscous and flows into the lower portion of the well bore ahead of the flame front. The movement of the oil is assisted by a gas drive 2 consisting of the products of combustion from the flame front and air forced through the strata to support the combustion but not used in the combustion process.

An important object of this invention is to provide an economical process of removing viscous oil from subsurface strata.

Another object of this invention is to provide an improved process of removing viscous oil from subsurface formations by utilizing a single well bore.

Another object of this invention is to provide a process utilizing a combination heat and gas drive for removing viscous oil from around a single well bore.

A further object of this invention is to provide a maximum recovery of oil from around a well bore.

Another object of this invention is to remove viscous oil from a subsurface strata through a substantial distance around a well bore.

A still further object of this invention is to provide a downward flow of heat through an oil-bearing formation surrounding a well bore.

Other objects and advantages of the invention will be evident from the following detailed description, when read in conjunction with the accompanying drawing which illustrates our invention.

in the drawing, the single figure is a vertical sectional view through a well bore illustrating (partially schematically) one form of apparatus which may be used in practicing this invention.

Stated broadly, the present invention may be defined as a process of removing viscous oil from a subsurface strata traversed by a vertical well bore, including the steps of:

(a) Initiating combustion in the upper portion of the strata around the well bore to form a flame front, and

(b) Continuously forcing gas into the upper portion of the strata for feeding the flame front and forcing the flame front downwardly around the well bore, whereby the strata is progressively heated in a downward direction and the products of combustion are forced downwardly to release oil entrained in the strata and direct the re leased oil into the well bore at the lower portion of the strata.

Referring to the drawing in detail, reference character 2 designates a well bore extending downwardly from the surface 4 through formations 6 and 8 and terminating in a lower formation 10. It will be understood that the well bore 2 will actually extend through a plurality of subsurface formations and that only two of such formations are shown for simplification. The formation or strata 8 may be any type of oil-containing material where the oil will not normally flow into the well bore 2, such as an oil sand containing heavy crude, or an oil shale.

A well casing 12 extends downwardly through the well bore 2 and terminates at a point above the lower formation 10 Within the lower portion of the oil-bearing formation 8. The upper end 14 of the casing 12 is capped or closed off above the surface 4, and a conduit 16 communicates with the casing 2 above the surface for purposes which will be hereinafter set forth. Three strings of tubing, 18, 20 and 22, are disposed concentrically in the casing 12. The outer tubing string 18 terminates slightly below the lower end of the casing 12, and the upper end 24 of the tubing 18 is capped or closed off around the next smaller tubing string 20. A conduit 26 communicates with the upper end portion of the tubing 18 above the upper end 14 of the casing 12.

The middle-sized tubing string 20 extends downwardly through the tubing 18 and preferably terminates in proximity with the lower end 28 of the well bore 2 for posihereinafter set forth. The upper end 30 of the tubing Patented Jan. 14, 1958 20 extends above the tubing 18 and is capped around the smaller tubing 22. Also, a conduit 32 communicates with the tubing string 20 above the upper end 24 of the tubing 18.

The smaller tubing string 22 extends downwardly in the tubing string 20 to a depth approximating the depth of the tubing 20, and the upper end 34 of the tubing 22 extends outwardly to receive air or gas as will be more fully hereinafter set forth.

In practicing the present invention, the casing 12 is cemented to the walls of the well bore 2 through the central portion of the oil-bearing formation 8 as indicated by reference character 36. Thus, the formation 8 is in direct communication with the casing 12 throughout the upper portion of the formation, and the formation is in direct communication with the large tubing string 18 through the lower end portion of the formation. It is preferred that the cement 36 extend through the major portion of the formation 8 to provide relatively small exposed portions of the formation above and below the cement 36.

A plurality of perforations 38 are formed in the casing 12 above the cement 36 and opposite the upper portion of the oil-bearing formation 8. Also, a suitable packer or concrete ring 40 is preferably disposed between the outer surface of the casing 12 and the walls of the well bore 2 above the perforations 38 adjacent the upper end of the oil-bearing formation 8.

In one embodiment of this invention a horizontal fracture 42 is formed in the upper portion of the oil-bearing formation 8 opposite the perforations 38. Also, one or more fractures may be formed in the lower portion of the formation 8 below the lower end 46 of the casing 12. These lower fractures may be either horizontal (as shown at 44) Or vertical (as shown at 45) fractures. After the fractures 42 and 44 or 45 have been formed and the casing 12 is set in the well bore 2 as illustrated in the drawing, the tubing string 18 is run inside the casing 12 and a packer 48 is set between the tubing 18 and the casing 12 opposite the cement 36.

Air is then forced through the conduit 16 downwardly through the annulus between the casing 12 and the tubing 18 and then outwardly through the perforations 38 into the upper horizontal fracture 42. The packers 40 and 48 and cement 36 direct the air into the perforations 38 and fracture 42. The oil in the fracture 42 may then be igmted by any suitable means and the air will supply the necessary oxygen to promote combustion. In some formatrons, the oil entrained in the formation 8 surrounding the fracture 42 will be ignited upon being contacted by the fresh a r discharging through the perforations 38.

As the high pressure air is supplied through the fracture 42, the flame front resulting from the combustion of the arr and the oil entrained in the formation 8 will proceed downwardly through the formation 8 around the well bore 2 in the direction indicated by the arrows. Also, the gases of combustion will be forced downwardly through the formation 8 by the high pressure incoming air and will re-enter the well bore 2 below the lower end 46 of the casing 12.

It will thus be apparent that the oil entrained in the formation 8 around the well bore 2 will be removed and directed into the lower portion of the well bore by a combination of two different effects. The heat of combustion will heat the formation 8 and reduce the viscosity of the entrained oil to induce a downward flow of the oil toward the lower portion of the well bore 2. In addition, the gases of combustion, along with a portion of the air not utilized in the combustion process, will provide a gas drive to force the entrained oil downwardly toward the lower portion of the well bore 2. The lower fractures 44 or 45 will facilitate flow of the entrained oil into the well bore.

The gases of combustion entering the lower portion of the well bore 2 will be discharged upwardly through the tubing string 18 and out the conduit 26; whereas the oil removed from the formation 8 will accumulate iuthe lower portion of the well bore 2 and may be removed by any desired artificial lifting means. However, in some formations the amount and pressure of the gas discharging into the lower portion of the well bore 2 may be suflicient to provide a removal of the accumulated oil along with the combustion gases through the tubing 18.

As previously noted, any desired artificial lifting means may be utilized to remove the oil accumulated in the lower portion of the well bore 2. For purposes of illustration we have shown, schematically, a gas lift arrangement comprising the tubing strings 2i and 22. Air or under pressure may be forced downwardly through the inner tubing 22 and discharged upwardly through the tubing string 20. As this high pressure gas reverses direction and proceeds upwardly through the tubing string 20 it will pick up a portion of the accumulated oil and provide a gas lift of the oil through the tubing string 20. The combined oil and gas is discharged through the upper conduit 32 to a suitable separator or the like (not shown).

Prior to initiating combustion in the upper fracture 42, it may be desirable to establish gas communication downwardly through the formation 8 around the Well bore 2. In that event, the high pressure air supplied through the perforations 38 will be forced downwardly through the formation 8 around the well bore 2 and the cement sleeve 36 into the lower portion of the Well bore 2, until a return of the air is noted through the outlet conduit 26. When this condition occurs the air and the oil entrained in the formation 8 may be ignited within the fracture 42 to start the downwardly moving flame front.

It will be noted that the packer or cement ring 40 prevents an upward flow of the air through the annulus between the casing 12 and the well bore 2 to direct the high pressure air into the fracture 42. Also, the fracture 42 will normally be formed below the interface 50 between the formations 6 and 8, whereby the interface 50 provides a barrier to an upward flow of air from the fracture 42 through the formation 6. Thus, the air will be constrained to flow in a generally downward direction from the fracture 42 through the formation 8. And since the lower portion of the well bore 2 will be at a lower pressure than any other accessible portion of the formation 8, the air (as well as the gases of combustion resulting from the flame front) will follow the path of least resistance and flow into the lower portion of the well bore 2.

The upper fracture 42 provides an extension of the flame front to a substantial distance from the well bore 2. The air introduced into the fracture 42 will completely fill the fracture to induce combustion all the way out to the outer limits of the fracture 42. The lower fractures 44 assist in the establishment of gas communication from the upper fracture 42 to the lower portion of the Well bore 2 and facilitate the flow of the heated oil into the well bore. It will be apparent, however, that in relatively permeable formations it will not be necessary to form the lower fractures 44 or 45, since gas communication will be easily established between the upper fracture 42 and the lower portion of the well bore 2.

From the foregoing it will be apparent that the present invention provides an economical process of removing viscous oil from subsurface strata. The process utilizes a single well bore and involves the use of a combination heat and gas drive for removing the viscous oil. The maximum amount of oil may be removed from a single well bore and the present process will reach the viscous oil a substantial distance from the well bore. The flame I front progresses downwardly around the well bore in the same direction as the gas flow to provide an efficient heat and gas drive.

While particular embodiments of the invention have been described, it will be understood, of course, that the invention is not limited thereto since many modifications may be made, and it is, therefore, contemplated to cover by the appended claims any such modifications as fall within the true spirit and scope of the invention.

The invention having thus been described, what is claimed and desired to be secured by Letters Patent is:

1. A process of removing viscous oil from a subsurface strata traversed by a vertical well bore, including the steps of: ((1) initiating combustion in the upper portion of the strata around the well bore to form a flame front, and (b) continuously forcing gas only into the upper portion of the strata for feeding the flame front and forcing the flame front downwardly around the well bore, whereby the strata is progressively heated in a downward direction and the products of combustion are forced downwardly to release oil entrained in the strata and direct the released oil into the well bore at the lower portion of the strata.

2. A process as defined in claim 1 characterized further in that the upper portion of the strata is horizontally fractured around the well bore and combustion is initiated in the fracture.

3. A process as defined in claim 1 characterized further in that the upper and lower portions of the strata are fractured around the well bore and combustion is initiated in the upper fracture.

4. A process as defined in claim 1 characterized further in that gas communication is established from the well bore at the upper portion of the strata downwardly through the strata around the well bore and back into the well bore at the lower end of the strata prior to initiation of combustion.

5. A .process as defined in claim 1 characterized further in that the lower portion of the strata is vertically fractured around the well bore prior to the initiation of combustion.

6. A process of removing viscous oil from a subsurface strata traversed by a vertical well bore, including the steps of: (a) placing a casing in the well bore at a depth where the casing terminates in the lower portion of the strata, (b) cementing the casing in the well bore from the lower end of the casing through the major portion of the strata, (c) perforating the casing opposite the upper end portion of the strata above the cement, (d) suspending a tubing in the casing, (e) packing the tubing to the casing below the perforations in the casing, (1) forcing air down through the annulus between the tubing and casing, outwardly through the perforations, downwardly through the strata around the well bore, and back into the well bore and the lower end of the tubing, and (g) initiating combustion of the air and the oil in the strata at the upper end portion of the strata to form a flame front around the well bore, whereby the air feeds and forces the flame front progressively downward around the well bore to heat the strata and drive oil from the strata into the well bore at the lower end portion of the strata.

7. A process as defined in claim 6 characterized further by including the step of horizontally fracturing the strata around the well bore opposite the perforations in the casing prior to the initiation of combustion.

8. A process as defined in claim 6 characterized further by including the steps of horizontally fracturing the strata around the well bore opposite the perforations in the casing, and fracturing the strata around the well bore below the lower end of the casing.

9. A process as defined in claim 1 characterized further by including the step of removing the released oil from the well bore upwardly through the well bare to the surface.

References Cited in the file of this patent UNITED STATES PATENTS 1,457,479 Wolcott June 5, 1923 2,675,081 Nowak Apr. 13, 1954 FOREIGN PATENTS 481,151 Canada Feb. 12, 1952

Citations de brevets
Brevet cité Date de dépôt Date de publication Déposant Titre
US1457479 *12 janv. 19205 juin 1923Wolcott Edson RMethod of increasing the yield of oil wells
US2675081 *23 oct. 195013 avr. 1954Union Oil CoMethod and apparatus for pumping and heating oil wells
CA481151A *12 févr. 1952Ranney LeoRecovery of fluid products from sub-surface mineral deposits
Référencé par
Brevet citant Date de dépôt Date de publication Déposant Titre
US2970826 *21 nov. 19587 févr. 1961Texaco IncRecovery of oil from oil shale
US2978025 *18 févr. 19574 avr. 1961Pan American Petroleum CorpFracturing well formations
US3004596 *28 mars 195817 oct. 1961Phillips Petroleum CoProcess for recovery of hydrocarbons by in situ combustion
US3004600 *17 juin 195717 oct. 1961Gulf Research Development CoSingle well in-situ combustion process for production of oil
US3018827 *17 juin 195730 janv. 1962Gulf Research Development CoSingle well vertical drive in-situ combustion process
US3024013 *24 avr. 19586 mars 1962Phillips Petroleum CoRecovery of hydrocarbons by in situ combustion
US3026935 *18 juil. 195827 mars 1962Texaco IncIn situ combustion
US3040809 *5 juin 195726 juin 1962Sinclair Oil & Gas CompanyProcess for recovering viscous crude oil from unconsolidated formations
US3048221 *12 mai 19587 août 1962Phillips Petroleum CoHydrocarbon recovery by thermal drive
US3110345 *26 févr. 195912 nov. 1963Gulf Research Development CoLow temperature reverse combustion process
US3113620 *6 juil. 195910 déc. 1963Exxon Research Engineering CoProcess for producing viscous oil
US3180414 *27 mars 196127 avr. 1965Phillips Petroleum CoProduction of hydrocarbons by fracturing and fluid drive
US3195632 *17 juin 195720 juil. 1965Gulf Res & Developement CompanRadial burning in-situ combustion process utilizing a single well
US3208527 *10 juil. 196128 sept. 1965Exxon Production Research CoMethod and apparatus for controlling flow of well fluids
US3342257 *30 déc. 196319 sept. 1967Standard Oil CoIn situ retorting of oil shale using nuclear energy
US3608637 *12 nov. 196928 sept. 1971Phillips Petroleum CoIn situ combustion production method
US3654691 *20 oct. 196911 avr. 1972Continental Oil CoProcess for constructing prestressed conduit for heated fluids
US4083404 *12 mai 197711 avr. 1978Texaco Inc.Oil recovery process utilizing air and superheated steam
US678294724 avr. 200231 août 2004Shell Oil CompanyIn situ thermal processing of a relatively impermeable formation to increase permeability of the formation
US687755524 avr. 200212 avr. 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation while inhibiting coking
US688063324 avr. 200219 avr. 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation to produce a desired product
US691585024 avr. 200212 juil. 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation having permeable and impermeable sections
US691844224 avr. 200219 juil. 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation in a reducing environment
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US784140119 oct. 200730 nov. 2010Shell Oil CompanyGas injection to inhibit migration during an in situ heat treatment process
US784140818 avr. 200830 nov. 2010Shell Oil CompanyIn situ heat treatment from multiple layers of a tar sands formation
US784142518 avr. 200830 nov. 2010Shell Oil CompanyDrilling subsurface wellbores with cutting structures
US784541119 oct. 20077 déc. 2010Shell Oil CompanyIn situ heat treatment process utilizing a closed loop heating system
US784992218 avr. 200814 déc. 2010Shell Oil CompanyIn situ recovery from residually heated sections in a hydrocarbon containing formation
US786037721 avr. 200628 déc. 2010Shell Oil CompanySubsurface connection methods for subsurface heaters
US786638520 avr. 200711 janv. 2011Shell Oil CompanyPower systems utilizing the heat of produced formation fluid
US786638613 oct. 200811 janv. 2011Shell Oil CompanyIn situ oxidation of subsurface formations
US786638813 oct. 200811 janv. 2011Shell Oil CompanyHigh temperature methods for forming oxidizer fuel
US791235820 avr. 200722 mars 2011Shell Oil CompanyAlternate energy source usage for in situ heat treatment processes
US793108618 avr. 200826 avr. 2011Shell Oil CompanyHeating systems for heating subsurface formations
US794219721 avr. 200617 mai 2011Shell Oil CompanyMethods and systems for producing fluid from an in situ conversion process
US79422034 janv. 201017 mai 2011Shell Oil CompanyThermal processes for subsurface formations
US795045318 avr. 200831 mai 2011Shell Oil CompanyDownhole burner systems and methods for heating subsurface formations
US798686921 avr. 200626 juil. 2011Shell Oil CompanyVarying properties along lengths of temperature limited heaters
US801145113 oct. 20086 sept. 2011Shell Oil CompanyRanging methods for developing wellbores in subsurface formations
US80165899 mars 200613 sept. 2011Shell Oil CompanyMethod of starting up a direct heating system for the flameless combustion of fuel and direct heating of a process fluid
US802757121 avr. 200627 sept. 2011Shell Oil CompanyIn situ conversion process systems utilizing wellbores in at least two regions of a formation
US804261018 avr. 200825 oct. 2011Shell Oil CompanyParallel heater system for subsurface formations
US807084021 avr. 20066 déc. 2011Shell Oil CompanyTreatment of gas from an in situ conversion process
US808381320 avr. 200727 déc. 2011Shell Oil CompanyMethods of producing transportation fuel
US811327213 oct. 200814 févr. 2012Shell Oil CompanyThree-phase heaters with common overburden sections for heating subsurface formations
US814666113 oct. 20083 avr. 2012Shell Oil CompanyCryogenic treatment of gas
US814666913 oct. 20083 avr. 2012Shell Oil CompanyMulti-step heater deployment in a subsurface formation
US81518809 déc. 201010 avr. 2012Shell Oil CompanyMethods of making transportation fuel
US815190710 avr. 200910 avr. 2012Shell Oil CompanyDual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations
US816205913 oct. 200824 avr. 2012Shell Oil CompanyInduction heaters used to heat subsurface formations
US816240510 avr. 200924 avr. 2012Shell Oil CompanyUsing tunnels for treating subsurface hydrocarbon containing formations
US817233510 avr. 20098 mai 2012Shell Oil CompanyElectrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations
US817730510 avr. 200915 mai 2012Shell Oil CompanyHeater connections in mines and tunnels for use in treating subsurface hydrocarbon containing formations
US819163028 avr. 20105 juin 2012Shell Oil CompanyCreating fluid injectivity in tar sands formations
US819268226 avr. 20105 juin 2012Shell Oil CompanyHigh strength alloys
US819665813 oct. 200812 juin 2012Shell Oil CompanyIrregular spacing of heat sources for treating hydrocarbon containing formations
US82205399 oct. 200917 juil. 2012Shell Oil CompanyControlling hydrogen pressure in self-regulating nuclear reactors used to treat a subsurface formation
US822416324 oct. 200317 juil. 2012Shell Oil CompanyVariable frequency temperature limited heaters
US822416424 oct. 200317 juil. 2012Shell Oil CompanyInsulated conductor temperature limited heaters
US822416521 avr. 200617 juil. 2012Shell Oil CompanyTemperature limited heater utilizing non-ferromagnetic conductor
US822586621 juil. 201024 juil. 2012Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US823092716 mai 201131 juil. 2012Shell Oil CompanyMethods and systems for producing fluid from an in situ conversion process
US823378229 sept. 201031 juil. 2012Shell Oil CompanyGrouped exposed metal heaters
US823873024 oct. 20037 août 2012Shell Oil CompanyHigh voltage temperature limited heaters
US824077413 oct. 200814 août 2012Shell Oil CompanySolution mining and in situ treatment of nahcolite beds
US82565129 oct. 20094 sept. 2012Shell Oil CompanyMovable heaters for treating subsurface hydrocarbon containing formations
US82618329 oct. 200911 sept. 2012Shell Oil CompanyHeating subsurface formations with fluids
US82671709 oct. 200918 sept. 2012Shell Oil CompanyOffset barrier wells in subsurface formations
US82671859 oct. 200918 sept. 2012Shell Oil CompanyCirculated heated transfer fluid systems used to treat a subsurface formation
US827245513 oct. 200825 sept. 2012Shell Oil CompanyMethods for forming wellbores in heated formations
US827666113 oct. 20082 oct. 2012Shell Oil CompanyHeating subsurface formations by oxidizing fuel on a fuel carrier
US82818619 oct. 20099 oct. 2012Shell Oil CompanyCirculated heated transfer fluid heating of subsurface hydrocarbon formations
US832768118 avr. 200811 déc. 2012Shell Oil CompanyWellbore manufacturing processes for in situ heat treatment processes
US83279329 avr. 201011 déc. 2012Shell Oil CompanyRecovering energy from a subsurface formation
US83533479 oct. 200915 janv. 2013Shell Oil CompanyDeployment of insulated conductors for treating subsurface formations
US835562322 avr. 200515 janv. 2013Shell Oil CompanyTemperature limited heaters with high power factors
US838181518 avr. 200826 févr. 2013Shell Oil CompanyProduction from multiple zones of a tar sands formation
US84345559 avr. 20107 mai 2013Shell Oil CompanyIrregular pattern treatment of a subsurface formation
US84487079 avr. 201028 mai 2013Shell Oil CompanyNon-conducting heater casings
US845935918 avr. 200811 juin 2013Shell Oil CompanyTreating nahcolite containing formations and saline zones
US848525211 juil. 201216 juil. 2013Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US853649713 oct. 200817 sept. 2013Shell Oil CompanyMethods for forming long subsurface heaters
US855597131 mai 201215 oct. 2013Shell Oil CompanyTreating tar sands formations with dolomite
US856207825 nov. 200922 oct. 2013Shell Oil CompanyHydrocarbon production from mines and tunnels used in treating subsurface hydrocarbon containing formations
US857903117 mai 201112 nov. 2013Shell Oil CompanyThermal processes for subsurface formations
US860609120 oct. 200610 déc. 2013Shell Oil CompanySubsurface heaters with low sulfidation rates
US860824926 avr. 201017 déc. 2013Shell Oil CompanyIn situ thermal processing of an oil shale formation
US86278878 déc. 200814 janv. 2014Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US86318668 avr. 201121 janv. 2014Shell Oil CompanyLeak detection in circulated fluid systems for heating subsurface formations
US863632325 nov. 200928 janv. 2014Shell Oil CompanyMines and tunnels for use in treating subsurface hydrocarbon containing formations
US866217518 avr. 20084 mars 2014Shell Oil CompanyVarying properties of in situ heat treatment of a tar sands formation based on assessed viscosities
US87017688 avr. 201122 avr. 2014Shell Oil CompanyMethods for treating hydrocarbon formations
US87017698 avr. 201122 avr. 2014Shell Oil CompanyMethods for treating hydrocarbon formations based on geology
US87398748 avr. 20113 juin 2014Shell Oil CompanyMethods for heating with slots in hydrocarbon formations
US875290410 avr. 200917 juin 2014Shell Oil CompanyHeated fluid flow in mines and tunnels used in heating subsurface hydrocarbon containing formations
US878958612 juil. 201329 juil. 2014Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US879139618 avr. 200829 juil. 2014Shell Oil CompanyFloating insulated conductors for heating subsurface formations
US88204068 avr. 20112 sept. 2014Shell Oil CompanyElectrodes for electrical current flow heating of subsurface formations with conductive material in wellbore
US88334538 avr. 201116 sept. 2014Shell Oil CompanyElectrodes for electrical current flow heating of subsurface formations with tapered copper thickness
US88511709 avr. 20107 oct. 2014Shell Oil CompanyHeater assisted fluid treatment of a subsurface formation
US885750624 mai 201314 oct. 2014Shell Oil CompanyAlternate energy source usage methods for in situ heat treatment processes
US88818069 oct. 200911 nov. 2014Shell Oil CompanySystems and methods for treating a subsurface formation with electrical conductors
US90163706 avr. 201228 avr. 2015Shell Oil CompanyPartial solution mining of hydrocarbon containing layers prior to in situ heat treatment
US902210921 janv. 20145 mai 2015Shell Oil CompanyLeak detection in circulated fluid systems for heating subsurface formations
US90221189 oct. 20095 mai 2015Shell Oil CompanyDouble insulated heaters for treating subsurface formations
US90330428 avr. 201119 mai 2015Shell Oil CompanyForming bitumen barriers in subsurface hydrocarbon formations
US90518299 oct. 20099 juin 2015Shell Oil CompanyPerforated electrical conductors for treating subsurface formations
US91275238 avr. 20118 sept. 2015Shell Oil CompanyBarrier methods for use in subsurface hydrocarbon formations
US91275388 avr. 20118 sept. 2015Shell Oil CompanyMethodologies for treatment of hydrocarbon formations using staged pyrolyzation
US91297289 oct. 20098 sept. 2015Shell Oil CompanySystems and methods of forming subsurface wellbores
US918178018 avr. 200810 nov. 2015Shell Oil CompanyControlling and assessing pressure conditions during treatment of tar sands formations
US93097554 oct. 201212 avr. 2016Shell Oil CompanyThermal expansion accommodation for circulated fluid systems used to heat subsurface formations
US93999054 mai 201526 juil. 2016Shell Oil CompanyLeak detection in circulated fluid systems for heating subsurface formations
US952832216 juin 201427 déc. 2016Shell Oil CompanyDual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations
US20030079877 *24 avr. 20021 mai 2003Wellington Scott LeeIn situ thermal processing of a relatively impermeable formation in a reducing environment
US20030080604 *24 avr. 20021 mai 2003Vinegar Harold J.In situ thermal processing and inhibiting migration of fluids into or out of an in situ oil shale formation
US20030098149 *24 avr. 200229 mai 2003Wellington Scott LeeIn situ thermal recovery from a relatively permeable formation using gas to increase mobility
US20030098605 *24 avr. 200229 mai 2003Vinegar Harold J.In situ thermal recovery from a relatively permeable formation
US20030102124 *24 avr. 20025 juin 2003Vinegar Harold J.In situ thermal processing of a blending agent from a relatively permeable formation
US20030102125 *24 avr. 20025 juin 2003Wellington Scott LeeIn situ thermal processing of a relatively permeable formation in a reducing environment
US20030102126 *24 avr. 20025 juin 2003Sumnu-Dindoruk Meliha DenizIn situ thermal recovery from a relatively permeable formation with controlled production rate
US20030102130 *24 avr. 20025 juin 2003Vinegar Harold J.In situ thermal recovery from a relatively permeable formation with quality control
US20030111223 *24 avr. 200219 juin 2003Rouffignac Eric Pierre DeIn situ thermal processing of an oil shale formation using horizontal heat sources
US20030116315 *24 avr. 200226 juin 2003Wellington Scott LeeIn situ thermal processing of a relatively permeable formation
US20030131993 *24 avr. 200217 juil. 2003Etuan ZhangIn situ thermal processing of an oil shale formation with a selected property
US20030131995 *24 avr. 200217 juil. 2003De Rouffignac Eric PierreIn situ thermal processing of a relatively impermeable formation to increase permeability of the formation
US20030131996 *24 avr. 200217 juil. 2003Vinegar Harold J.In situ thermal processing of an oil shale formation having permeable and impermeable sections
US20030136558 *24 avr. 200224 juil. 2003Wellington Scott LeeIn situ thermal processing of an oil shale formation to produce a desired product
US20030136559 *24 avr. 200224 juil. 2003Wellington Scott LeeIn situ thermal processing while controlling pressure in an oil shale formation
US20030137181 *24 avr. 200224 juil. 2003Wellington Scott LeeIn situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range
US20030141066 *24 avr. 200231 juil. 2003Karanikas John MichaelIn situ thermal processing of an oil shale formation while inhibiting coking
US20030141067 *24 avr. 200231 juil. 2003Rouffignac Eric Pierre DeIn situ thermal processing of an oil shale formation to increase permeability of the formation
US20030141068 *24 avr. 200231 juil. 2003Pierre De Rouffignac EricIn situ thermal processing through an open wellbore in an oil shale formation
US20030142964 *24 avr. 200231 juil. 2003Wellington Scott LeeIn situ thermal processing of an oil shale formation using a controlled heating rate
US20030146002 *24 avr. 20027 août 2003Vinegar Harold J.Removable heat sources for in situ thermal processing of an oil shale formation
US20030148894 *24 avr. 20027 août 2003Vinegar Harold J.In situ thermal processing of an oil shale formation using a natural distributed combustor
US20030155111 *24 oct. 200221 août 2003Shell Oil CoIn situ thermal processing of a tar sands formation
US20030164239 *24 avr. 20024 sept. 2003Wellington Scott LeeIn situ thermal processing of an oil shale formation in a reducing environment
US20030173072 *24 oct. 200218 sept. 2003Vinegar Harold J.Forming openings in a hydrocarbon containing formation using magnetic tracking
US20030173078 *24 avr. 200218 sept. 2003Wellington Scott LeeIn situ thermal processing of an oil shale formation to produce a condensate
US20030173080 *24 avr. 200218 sept. 2003Berchenko Ilya EmilIn situ thermal processing of an oil shale formation using a pattern of heat sources
US20030173081 *24 oct. 200218 sept. 2003Vinegar Harold J.In situ thermal processing of an oil reservoir formation
US20030173085 *24 oct. 200218 sept. 2003Vinegar Harold J.Upgrading and mining of coal
US20030178191 *24 oct. 200225 sept. 2003Maher Kevin AlbertIn situ recovery from a kerogen and liquid hydrocarbon containing formation
US20030192691 *24 oct. 200216 oct. 2003Vinegar Harold J.In situ recovery from a hydrocarbon containing formation using barriers
US20030192693 *24 oct. 200216 oct. 2003Wellington Scott LeeIn situ thermal processing of a hydrocarbon containing formation to produce heated fluids
US20030196788 *24 oct. 200223 oct. 2003Vinegar Harold J.Producing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation
US20030196789 *24 oct. 200223 oct. 2003Wellington Scott LeeIn situ thermal processing of a hydrocarbon containing formation and upgrading of produced fluids prior to further treatment
US20030196801 *24 oct. 200223 oct. 2003Vinegar Harold J.In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well
US20030196810 *24 oct. 200223 oct. 2003Vinegar Harold J.Treatment of a hydrocarbon containing formation after heating
US20030201098 *24 oct. 200230 oct. 2003Karanikas John MichaelIn situ recovery from a hydrocarbon containing formation using one or more simulations
US20030205378 *24 oct. 20026 nov. 2003Wellington Scott LeeIn situ recovery from lean and rich zones in a hydrocarbon containing formation
US20040020642 *24 oct. 20025 févr. 2004Vinegar Harold J.In situ recovery from a hydrocarbon containing formation using conductor-in-conduit heat sources with an electrically conductive material in the overburden
US20040040715 *24 oct. 20024 mars 2004Wellington Scott LeeIn situ production of a blending agent from a hydrocarbon containing formation
US20040144540 *24 oct. 200329 juil. 2004Sandberg Chester LedlieHigh voltage temperature limited heaters
US20040146288 *24 oct. 200329 juil. 2004Vinegar Harold J.Temperature limited heaters for heating subsurface formations or wellbores
US20040211554 *24 avr. 200228 oct. 2004Vinegar Harold J.Heat sources with conductive material for in situ thermal processing of an oil shale formation
US20040211557 *24 avr. 200228 oct. 2004Cole Anthony ThomasConductor-in-conduit heat sources for in situ thermal processing of an oil shale formation
US20040211569 *24 oct. 200228 oct. 2004Vinegar Harold J.Installation and use of removable heaters in a hydrocarbon containing formation
US20050006097 *24 oct. 200313 janv. 2005Sandberg Chester LedlieVariable frequency temperature limited heaters
US20050092483 *24 oct. 20025 mai 2005Vinegar Harold J.In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor
US20050269077 *22 avr. 20058 déc. 2005Sandberg Chester LStart-up of temperature limited heaters using direct current (DC)
US20050269088 *22 avr. 20058 déc. 2005Vinegar Harold JInhibiting effects of sloughing in wellbores
US20050269089 *22 avr. 20058 déc. 2005Sandberg Chester LTemperature limited heaters using modulated DC power
US20050269090 *22 avr. 20058 déc. 2005Vinegar Harold JTemperature limited heaters with thermally conductive fluid used to heat subsurface formations
US20050269091 *22 avr. 20058 déc. 2005Guillermo Pastor-SanzReducing viscosity of oil for production from a hydrocarbon containing formation
US20050269092 *22 avr. 20058 déc. 2005Vinegar Harold JVacuum pumping of conductor-in-conduit heaters
US20050269093 *22 avr. 20058 déc. 2005Sandberg Chester LVariable frequency temperature limited heaters
US20050269094 *22 avr. 20058 déc. 2005Harris Christopher KTriaxial temperature limited heater
US20050269095 *22 avr. 20058 déc. 2005Fairbanks Michael DInhibiting reflux in a heated well of an in situ conversion system
US20050269313 *22 avr. 20058 déc. 2005Vinegar Harold JTemperature limited heaters with high power factors
US20060005968 *22 avr. 200512 janv. 2006Vinegar Harold JTemperature limited heaters with relatively constant current
US20060210468 *9 mars 200621 sept. 2006Peter VeenstraHeat transfer system for the combustion of a fuel and heating of a process fluid and a process that uses same
US20060210936 *9 mars 200621 sept. 2006Peter VeenstraMulti-tube heat transfer system for the combustion of a fuel and heating of a process fluid and the use thereof
US20060213657 *31 janv. 200628 sept. 2006Shell Oil CompanyIn situ thermal processing of an oil shale formation using a pattern of heat sources
US20060222578 *9 mars 20065 oct. 2006Peter VeenstraMethod of starting up a direct heating system for the flameless combustion of fuel and direct heating of a process fluid
US20060289536 *22 avr. 200528 déc. 2006Vinegar Harold JSubsurface electrical heaters using nitride insulation
US20070045265 *21 avr. 20061 mars 2007Mckinzie Billy J IiLow temperature barriers with heat interceptor wells for in situ processes
US20070045266 *21 avr. 20061 mars 2007Sandberg Chester LIn situ conversion process utilizing a closed loop heating system
US20070045267 *21 avr. 20061 mars 2007Vinegar Harold JSubsurface connection methods for subsurface heaters
US20070045268 *21 avr. 20061 mars 2007Vinegar Harold JVarying properties along lengths of temperature limited heaters
US20070095537 *20 oct. 20063 mai 2007Vinegar Harold JSolution mining dawsonite from hydrocarbon containing formations with a chelating agent
US20070108200 *21 avr. 200617 mai 2007Mckinzie Billy J IiLow temperature barrier wellbores formed using water flushing
US20070108201 *21 avr. 200617 mai 2007Vinegar Harold JInsulated conductor temperature limited heater for subsurface heating coupled in a three-phase wye configuration
US20070119098 *21 avr. 200631 mai 2007Zaida DiazTreatment of gas from an in situ conversion process
US20070133959 *21 avr. 200614 juin 2007Vinegar Harold JGrouped exposed metal heaters
US20070133960 *21 avr. 200614 juin 2007Vinegar Harold JIn situ conversion process systems utilizing wellbores in at least two regions of a formation
US20070133961 *21 avr. 200614 juin 2007Fairbanks Michael DMethods and systems for producing fluid from an in situ conversion process
US20070137856 *21 avr. 200621 juin 2007Mckinzie Billy JDouble barrier system for an in situ conversion process
US20070144732 *21 avr. 200628 juin 2007Kim Dong SLow temperature barriers for use with in situ processes
US20070284108 *20 avr. 200713 déc. 2007Roes Augustinus W MCompositions produced using an in situ heat treatment process
US20070289733 *20 avr. 200720 déc. 2007Hinson Richard AWellhead with non-ferromagnetic materials
US20080017380 *20 avr. 200724 janv. 2008Vinegar Harold JNon-ferromagnetic overburden casing
US20080217321 *21 avr. 200611 sept. 2008Vinegar Harold JTemperature limited heater utilizing non-ferromagnetic conductor
US20080236831 *19 oct. 20072 oct. 2008Chia-Fu HsuCondensing vaporized water in situ to treat tar sands formations
US20080314593 *1 juin 200725 déc. 2008Shell Oil CompanyIn situ thermal processing of an oil shale formation using a pattern of heat sources
US20090053660 *18 juil. 200826 févr. 2009Thomas MikusFlameless combustion heater
US20090056696 *18 juil. 20085 mars 2009Abdul Wahid MunshiFlameless combustion heater
US20090090158 *18 avr. 20089 avr. 2009Ian Alexander DavidsonWellbore manufacturing processes for in situ heat treatment processes
US20090159277 *16 déc. 200825 juin 2009Grant HockingEnhanced Hydrocarbon Recovery by in Situ Combustion of Oil Sand Formations
US20090194286 *13 oct. 20086 août 2009Stanley Leroy MasonMulti-step heater deployment in a subsurface formation
US20090194333 *13 oct. 20086 août 2009Macdonald DuncanRanging methods for developing wellbores in subsurface formations
US20090200022 *13 oct. 200813 août 2009Jose Luis BravoCryogenic treatment of gas
US20090200290 *13 oct. 200813 août 2009Paul Gregory CardinalVariable voltage load tap changing transformer
US20090272526 *10 avr. 20095 nov. 2009David Booth BurnsElectrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations
US20090272536 *10 avr. 20095 nov. 2009David Booth BurnsHeater connections in mines and tunnels for use in treating subsurface hydrocarbon containing formations
US20100071903 *25 nov. 200925 mars 2010Shell Oil CompanyMines and tunnels for use in treating subsurface hydrocarbon containing formations
US20100147521 *9 oct. 200917 juin 2010Xueying XiePerforated electrical conductors for treating subsurface formations
US20100147522 *9 oct. 200917 juin 2010Xueying XieSystems and methods for treating a subsurface formation with electrical conductors
US20100155070 *9 oct. 200924 juin 2010Augustinus Wilhelmus Maria RoesOrganonitrogen compounds used in treating hydrocarbon containing formations
US20100206570 *9 oct. 200919 août 2010Ernesto Rafael Fonseca OcamposCirculated heated transfer fluid systems used to treat a subsurface formation
US20100224368 *9 oct. 20099 sept. 2010Stanley Leroy MasonDeployment of insulated conductors for treating subsurface formations
US20100258265 *9 avr. 201014 oct. 2010John Michael KaranikasRecovering energy from a subsurface formation
US20100258290 *9 avr. 201014 oct. 2010Ronald Marshall BassNon-conducting heater casings
US20100258291 *9 avr. 201014 oct. 2010Everett De St Remey EdwardHeated liners for treating subsurface hydrocarbon containing formations
US20100258309 *9 avr. 201014 oct. 2010Oluropo Rufus AyodeleHeater assisted fluid treatment of a subsurface formation
US20100270015 *26 avr. 201028 oct. 2010Shell Oil CompanyIn situ thermal processing of an oil shale formation
US20100272595 *26 avr. 201028 oct. 2010Shell Oil CompanyHigh strength alloys
US20100276141 *28 avr. 20104 nov. 2010Shell Oil CompanyCreating fluid injectivity in tar sands formations
US20110042084 *9 avr. 201024 févr. 2011Robert BosIrregular pattern treatment of a subsurface formation
US20110088904 *21 juil. 201021 avr. 2011De Rouffignac Eric PierreIn situ recovery from a hydrocarbon containing formation
US20110168394 *9 déc. 201014 juil. 2011Shell Oil CompanyMethods of producing alkylated hydrocarbons from an in situ heat treatment process liquid
US20130333874 *14 mars 201319 déc. 2013Leonard Alan BollinghamThrough Tubing gas lift mandrel
Classifications
Classification aux États-Unis166/257, 166/259
Classification internationaleE21B43/247, E21B43/16, E21B36/00
Classification coopérativeE21B43/247, E21B36/005
Classification européenneE21B36/00D, E21B43/247