WO1994013931A1 - Method for detecting relative position of bores - Google Patents
Method for detecting relative position of bores Download PDFInfo
- Publication number
- WO1994013931A1 WO1994013931A1 PCT/EP1993/003353 EP9303353W WO9413931A1 WO 1994013931 A1 WO1994013931 A1 WO 1994013931A1 EP 9303353 W EP9303353 W EP 9303353W WO 9413931 A1 WO9413931 A1 WO 9413931A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bore
- coil
- bores
- distance
- orientation
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
- E21B47/0228—Determining slope or direction of the borehole, e.g. using geomagnetism using electromagnetic energy or detectors therefor
Definitions
- the present invention refers to a device for detecting distance and orientation of a second bore as regards a first reference bore and a new method for detecting and for intersecting said two bores.
- a suitable application field of the instant invention is in the quarries, wherein a direct cutting from the stone mass is carried out by means of a diamond wire or by means of a helical wire, i.e. when it is necessary to drill two intersecting bores and to introduce the cutting wire into the bores, the wire being rotated by means of a cutting machinery.
- PRIOR ART In the art of stone cutting in quarries, a particular technique is adopted consisting of boring into the rock mass two intersecting bores.
- the cutting machinery rotates and pulls a loop formed by a diamond wire, or a helical one, which enters the first bore and goes out through the second one.
- the cutting machinery essentially consists of an electric engine (usually of around 50 HP power) mounted on a rail, having a pulley which rotates the stone-cutting wire. In the case of cutting by means of a diamond wire, the cut is produced by the friction of the diamond particles on the stone surface.
- the wire is not only rotated by the cutting machinery, but it is at the same time pulled by said machinery which moves along the rail.
- Object of the present invention is a device for detecting distance and orientation of a second bore as regards a first reference bore and a new method for detecting distance and orientation of two bores and for intersecting said two bores at a point.
- the stone cutting e.g. marble or granite rocks
- the device and the method objects of the present invention can be used when it is required to know the exact position of a bore with regard to another and/or when the intersection of the two bores is required.
- the invention refers to a device for detecting distance and orientation of a second bore as regards a first one, and to a method for detecting and/or for intersecting said two bores characterized by the fact that said device comprises a first coil which produces an electromagnetic field and which is introduced in the first bore and a second coil receiving said electromagnetic field which is introduced in the second bore.
- FIGURES Figure 1 represents schematically a cutting machinery of a quarry.
- Figure 2 represents a first embodiment of the device object of the present invention, which has only a theoretical meaning.
- Figure 3 represents a second possible embodiment of the device object of the present invention.
- Figure 4 represents a third possible embodiment of the device object of the present invention.
- Figure 1 schematically represents the cutting machinery 13 performing a stone cutting in a quarry. It essentially consists of an electric engine 14 having normally a power of 50 HP mounted on a trolly 15 sliding on a rail 16.
- the electric engine 14 rotates a pulley 17 which in its turn rotates the helical or diamond cutting wire 18; this latter passes through the bores 11 and 12, previously drilled in the rock mass 20 and which intersect at point 19-
- the trolley 15 withdraws.
- the diamond particles present on the wire 18 rub the rock, thus taking away the stone particles which evacuate through the bores 11, 12. Therefore, succeeding in intesecting the two bores 11 and 12 at point 1 after few attempts is capital to this kind of cutting.
- the device object of the present invention comprises : a) a first coil 23 (having the two tips connected with an alternate current generator) which produces a magnetic field B, said first coil being introduced into the first bore 21; and b) a second coil 24 introduced into the second bore 22, whose two tips are linked with a tension or current detector (not shown in the figure) , which thanks to suitable graduated scales allows the direct detection of the distance D between two bores 21 and 22 with a certain degree of approximation.
- the embodiment represented in Figure 2 has only a theoretical meaning because it permits the detection of the distance D but does not provide any information about the orientation of the second bore 22 with reference to the first one 21, i.e. the user does not know whether the bore 22 is on the right side or on the left side of the bore 21.
- the Applicant conceived the embodiments shown in the following figures, which have a merely illustrative meaning, not limitative of the present invention.
- Figure 3 shows a second embodiment of the device object of the present invention.
- the first coil 33 producing the magnetic field is coiled around a L-shaped soft iron core mounted on a stick-shaped stiff element 36. Owing to the L-shaped core an oriented magnetic field B is generated.
- a second coil 3 linked with a measuring instrument 35 (e.g. an Amperometer or a Voltmeter) having graduated scales which give directely the value of the distance D.
- a measuring instrument 35 e.g. an Amperometer or a Voltmeter
- Figure 4 shows another system to determinate not only the value of the distance between the two bores, but also whether the second bore is on the right side or on the left side of the first one (orientation) .
- Figure 4 represents a third embodiment of the device object of the present invention; it essentially consists of a coil 43 which is lowered into the bore 4l and generates a magnetic field detected by two coils 44 and 45 placed in the bore 42. If the bore 42 is on the right side of the bore 4l the measurement instrument 46 linked with the coil 44 indicates a higher value than the value marked on the measuring instrument 7 linked with the coil 45. The contrary happens if the bore 46 is on the left side of the bore 4l. Remaining in the scope of the present invention, the skilled man can provide all the technical expedients in order to obtain reliable data on the exact position of the second bore with regard to the first one.
- amplifiers, filters and any electronic device can be provided in order to improve the quality of the outgoing signal and have reliable indications on the distance and on the orientation of a bore as regards the other one.
- a traditional pointing system e.g. a laser system
- the user can also use a traditional pointing system, e.g. a laser system; afterwards he measures ,by means of the device object of the present invention distance and orientation (whether on the right side or on the left side) of the second bore as regards the first one; after this operation the user carries out another bore displaced of a D distance previously measured, and so on until the two bores intersect at a point.
- the user passes the cutting wire through the two bores in order to cut the rock by means of a cutting machinery.
- the method object of the present invention is characterized in that: a) a first attempt is made in order to intersect the first bore with the second one by means of any pointing system; b) first means of emission of the electromagnetic field are introduced in the first bore; c) second means for receiving the electromagnetic field are introduced into the second bore; d) the second receiving means detect the distance D and the orientation of the second bore with regard to the first one; e) a second bore is further carried out on the base of the data collected at point (d); f) the operations effectuated at points (d) and (e) are repeated N times until succeeding in intersecting said two bores.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94901918A EP0670951B1 (en) | 1992-12-04 | 1993-11-30 | Method for detecting relative position of bores |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI92A002777 | 1992-12-04 | ||
ITMI922777A IT1256462B (en) | 1992-12-04 | 1992-12-04 | DEVICE FOR DETECTION OF THE DISTANCE AND ORIENTATION OF A SECOND HOLE COMPARED TO A FIRST REFERENCE AND METHOD FOR THE DETECTION OF THE SAME AND FOR THE INTERSECTION OF THESE TWO HOLES |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994013931A1 true WO1994013931A1 (en) | 1994-06-23 |
Family
ID=11364410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1993/003353 WO1994013931A1 (en) | 1992-12-04 | 1993-11-30 | Method for detecting relative position of bores |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0670951B1 (en) |
ES (1) | ES2100036T3 (en) |
IT (1) | IT1256462B (en) |
WO (1) | WO1994013931A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4072200A (en) * | 1976-05-12 | 1978-02-07 | Morris Fred J | Surveying of subterranean magnetic bodies from an adjacent off-vertical borehole |
DE2911419A1 (en) * | 1979-03-23 | 1980-11-13 | Dresdner Bank Ag Frankfurt Fil | Borehole driving system in loose soil - sets pointed head off-centre to correct measured deviation |
EP0082779A1 (en) * | 1981-12-18 | 1983-06-29 | ETAT FRANCAIS représenté par Le Ministère de l'Urbanisme et du Logement LABORATOIRE CENTRAL DES PONTS ET CHAUSSEES | Device for measuring the distance between two points in a solid |
US4646277A (en) | 1985-04-12 | 1987-02-24 | Gas Research Institute | Control for guiding a boring tool |
US4791373A (en) | 1986-10-08 | 1988-12-13 | Kuckes Arthur F | Subterranean target location by measurement of time-varying magnetic field vector in borehole |
-
1992
- 1992-12-04 IT ITMI922777A patent/IT1256462B/en active IP Right Grant
-
1993
- 1993-11-30 WO PCT/EP1993/003353 patent/WO1994013931A1/en active IP Right Grant
- 1993-11-30 EP EP94901918A patent/EP0670951B1/en not_active Expired - Lifetime
- 1993-11-30 ES ES94901918T patent/ES2100036T3/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4072200A (en) * | 1976-05-12 | 1978-02-07 | Morris Fred J | Surveying of subterranean magnetic bodies from an adjacent off-vertical borehole |
DE2911419A1 (en) * | 1979-03-23 | 1980-11-13 | Dresdner Bank Ag Frankfurt Fil | Borehole driving system in loose soil - sets pointed head off-centre to correct measured deviation |
EP0082779A1 (en) * | 1981-12-18 | 1983-06-29 | ETAT FRANCAIS représenté par Le Ministère de l'Urbanisme et du Logement LABORATOIRE CENTRAL DES PONTS ET CHAUSSEES | Device for measuring the distance between two points in a solid |
US4646277A (en) | 1985-04-12 | 1987-02-24 | Gas Research Institute | Control for guiding a boring tool |
US4791373A (en) | 1986-10-08 | 1988-12-13 | Kuckes Arthur F | Subterranean target location by measurement of time-varying magnetic field vector in borehole |
Also Published As
Publication number | Publication date |
---|---|
ITMI922777A0 (en) | 1992-12-04 |
EP0670951A1 (en) | 1995-09-13 |
ITMI922777A1 (en) | 1994-06-04 |
EP0670951B1 (en) | 1997-02-19 |
ES2100036T3 (en) | 1997-06-01 |
IT1256462B (en) | 1995-12-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3717080B2 (en) | Electrical logging of layered formations | |
US6232780B1 (en) | Underground locating using a locating signal transmitter configured with a single antenna | |
US5155442A (en) | Position and orientation locator/monitor | |
CA2452120A1 (en) | Relative drill bit direction measurement | |
GB2100442A (en) | Well casing detector system and method | |
WO2000050926A1 (en) | Directional resistivity measurements for azimuthal proximity detection of bed boundaries | |
CA2441924C (en) | Detecting a boundary in a formation | |
EP0428180A1 (en) | Control system for guiding boring tools and a sensing system for locating the same | |
US4972150A (en) | Plural coil induction device and method for determining in a borehole the azimuth and slope of a discontinuity layer in a homogeneous environment | |
CN107587839A (en) | Component for broken rock system | |
NO173523B (en) | PROCEDURE FOR MAGNETIZING A STRING OF BORROW HOLES | |
CN101793973A (en) | While-drilling electric method | |
WO1994013931A1 (en) | Method for detecting relative position of bores | |
US6002258A (en) | Method for locating a boring tool | |
US4320340A (en) | Apparatus for measuring magnetic flux density resulting from galvanic current flow in subsurface casing using a plurality of flux gates | |
JPS5811030B2 (en) | How to detect horizontal position of shield machine | |
CA1174276A (en) | Method of determining the location of a deep-well casing by magnetic field sensing | |
US8736271B2 (en) | Method and apparatus for measuring resistivity of formations | |
Rabinovitch et al. | Polarization-depolarization process in glass during percussion drilling | |
Rauen et al. | Determination of electrical resistivity, its anisotropy and heterogeneity on drill cores: a new method 1 | |
SU359404A1 (en) | DEVICE FOR MAGNETIC MEASUREMENTS OF DISTANCES BETWEEN PARALLEL DRILLING DRILLS | |
SU1619214A1 (en) | Method of prospecting hydrothermal ore deposits | |
JPS6023594A (en) | Horizontal displacement measuring method and apparatus of tunnel drilling machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): BR JP RU US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1994901918 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1994901918 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1994901918 Country of ref document: EP |