CN104775801A - Vacuum spiral pipe type nitrogen gas heater for oil shale underground in-situ transformation - Google Patents
Vacuum spiral pipe type nitrogen gas heater for oil shale underground in-situ transformation Download PDFInfo
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- CN104775801A CN104775801A CN201510169588.8A CN201510169588A CN104775801A CN 104775801 A CN104775801 A CN 104775801A CN 201510169588 A CN201510169588 A CN 201510169588A CN 104775801 A CN104775801 A CN 104775801A
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- fixedly installed
- air
- valve
- vacuum
- heater
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Classifications
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- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/243—Combustion in situ
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
Abstract
The invention discloses a vacuum spiral pipe type nitrogen gas heater for oil shale underground in-situ transformation. The vacuum spiral pipe type nitrogen gas heater consists of a combustion heat exchange system, a vacuum heat insulation system, a monitoring and control system and a heater box body, wherein fuel gas and air are injected on the ground, in addition, the mixture ratio is controlled under the ground, the combustion heat exchange system carries out underground ignition on the fuel gas and the air, in addition, ground high-pressure injected normal-temperature nitrogen gas is heated in the well, the vacuum heat insulation system is used for reducing the heat loss of the heater, the ground monitoring and control system is used for realizing the real-time monitoring and regulation on the underground temperature, pressure, flow rate and air-fuel ratio, and an oil shale layer is subjected to in-situ exploitation by the high-temperature nitrogen gas. The vacuum spiral pipe type nitrogen gas heater has the advantages that the cost is low, the environment pollution is low, the resource utilization efficiency is high, in addition, waste is little, the work efficiency is high, the heat loss in the exploitation process is reduced, the oil yield is high, the occupied area is small, and deep-layer and high-thickness oil shale resources can be developed.
Description
Technical field
The present invention relates to a kind of oil shale underground in situ conversion heater, particularly a kind of oil shale underground in situ conversion vacuum screw tubular type nitrogen heater.
Background technology
Oil shale retorting is divided into destructive distillation on the ground and underground retoring two kinds, retorting technique is due to the problem of the defect of technique own on the ground, there is the shortcoming being much difficult to avoid, such as: the waste residue high number that utilization rate is low, high pollution, small scale, cost are high, gas retort produces, take a large amount of land area, not easy to be recycled etc.Underground retoring, also referred to as in-situ retorting, refers to that the oil shale buried in underground is without exploitation, directly manages in underground to heat destructive distillation, and the oil gas of output is exported to ground, and condensation obtains shale oil and fixed gas.
In-situ retorting technology is according to the difference of oil shale layer by hot mode, conduction heating, Convective Heating, radiation heating three types of technology can be divided into, at present, extensive employing conduction mode of heating heating rammell, mainly contains the in-situ conversion technology (ICP) of the Shell Oil Company, the Electrof racTM technology of Mobil Oil Corporation and the GFC technology of IEP company.
ICP technology, electrical heating process is complicated, the many and difficult eliminating of fault; Heater element power is little, and power consumption is many, and sweep area is little, and cost is high, the Electrof racTM technology of Mobil Oil Corporation, and blowdown is poor, easily causes water pollutions, the GFC technology of IEP company, and device structure is complicated, and environmental requirement is high, uses not extensive.
The Convective Heating technology of Institutes Of Technology Of Taiyuan, needs a large amount of water, very large to environmental disruption effect.
Take the technology mainly LLNL radio-frequency technique of radiant heating pattern, firing rate is slow.
Summary of the invention
The object of the invention is to solve the problems such as above-mentioned existing in-situ retorting technology heats high energy consumption to oil shale, efficiency is low, heating process is complicated, firing equipment complex structure, apparatus expensive, and a kind of oil shale underground in situ conversion vacuum screw tubular type nitrogen heater is provided.
The present invention is made up of combustion heat-exchange system, vacuum heat-preserving system, Monitoring and control system and heater compartment, combustion heat-exchange system is fixedly installed in heater compartment, vacuum heat-preserving system is fixedly installed between the outer wall of heater compartment and inwall, and Monitoring and control system is fixedly installed in heater compartment;
Combustion heat-exchange system comprises combustion apparatus and helix tube composition, helix tube winding is outside at the casing air of combustion apparatus, combustion apparatus comprises Gas Pipe, casing air, air guide flue gas composite member, igniter, burner nozzle, smoke-box, first one way valve and the second one way valve, Gas Pipe is fixedly installed in casing air, casing air is fixedly installed on air guide flue gas composite member, first one way valve is fixedly installed on Gas Pipe bottom, second one way valve is fixedly installed on heater compartment bottom, igniter is fixedly installed on burner nozzle top, turbulent baffle is fixedly installed in helix tube,
Vacuum heat-preserving system comprises vacuum spool, screw, vacuum chamber and temperature compensator, and vacuum spool, screw, vacuum chamber and temperature compensator are fixedly installed between the outer wall of heater compartment and inwall;
Monitoring and control system comprises monitoring system and control valve system, monitoring system comprises thermometer conductor interface, thermometric support, flame detector, air-fuel ratio sensor and several first pressure meter, thermometer conductor interface is fixedly installed on helix tube top, thermometric support is fixedly installed on large stifle, flame detector and air-fuel ratio sensor are fixedly installed on air door plate, and several first pressure meter is fixedly installed in switch board;
Control valve system comprises Gas Pipe control valve and air hose control valve, Gas Pipe control valve is fixedly installed on Gas Pipe mouth of pipe place, air hose control valve is fixedly installed on casing air mouth of pipe place, gas control valve bag has the first ventilation ball valve, the first flap valve, the first pressure regulator valve, the first pressure switch, the first electromagnetic valve and first flow control valve, and air hose control valve comprises the second ventilation ball valve, the second flap valve, the second pressure regulator valve, the second pressure switch, the second electromagnetic valve, second adjustable valve and combustion mouth valve.
Heater compartment has large stifle and air door plate.
Operating principle of the present invention and process:
When the present invention works, open fuel gas transmission pump and air compressor, drive air-fuel ratio sensor, combustion gas and air is passed into by gas inlet b and air inlet c, combustion gas and air mix with certain proportion in smoke-box, after the amount of cigarette indoor fuel gas and air reaches requirement, drive point firearm and flame detector, the mixture of combustion gas and air is lighted in smoke-box, combustion gas is discharged by smoke evacuation outlet a, air-fuel ratio sensor and flame sensor detect burning degree in real time, the proportioning of air demand and combustion gas and air can be controlled in real time, nitrogen enters in helix tube by nitrogen inlet e, the nitrogen that heat will pass in thermal convection current mode by helix tube by the high-temperature flue gas that combustion gas and air burning produce, the temperature of nitrogen and change thereof are reached ground by wire through thermometer conductor interface, when nitrogen outlet temperature reaches after 500 DEG C, pass through Monitoring and control system, the feeding flow of regulating gas and air, make nitrogen outlet temperature stabilization at 450 DEG C ~ 500 DEG C, by ground monitoring and control system, can Real-Time Monitoring Gas Pipe, force value in casing air, the high temperature nitrogen produced carries out in-situ retorting in shaft bottom to oil shale layer by nitrogen outlet opening d.
Beneficial effect of the present invention:
Cost of the present invention is low, and environmental pollution is little, and the level of resources utilization is high and discarded object is few, and operating efficiency is high, and reduce the thermal loss in recovery process, tar productivity is high, and floor space is few, can develop the oil shale resources of deep layer, high thickness.
Accompanying drawing explanation
Fig. 1 is sectional view of the present invention.
Fig. 2 is control system schematic diagram of the present invention.
Detailed description of the invention
Refer to shown in Fig. 1, the present invention is made up of combustion heat-exchange system 1, vacuum heat-preserving system 2, Monitoring and control system 3 and heater compartment 4, combustion heat-exchange system 1 is fixedly installed in heater compartment 4, between the outer wall that vacuum heat-preserving system 2 is fixedly installed on heater compartment 4 and inwall, Monitoring and control system 3 is fixedly installed in heater compartment 4;
Combustion heat-exchange system 1 comprises combustion apparatus 11 and helix tube 12 forms, helix tube 12 winding is outside at the casing air 112 of combustion apparatus 11, combustion apparatus 11 comprises Gas Pipe 111, casing air 112, air guide flue gas composite member 113, igniter 114, burner nozzle 115, smoke-box 116, first one way valve 117 and the second one way valve 118, Gas Pipe 111 is fixedly installed in casing air 112, casing air 112 is fixedly installed on air guide flue gas composite member 113, first one way valve 117 is fixedly installed on Gas Pipe 111 bottom, second one way valve 118 is fixedly installed on heater compartment 4 bottom, igniter 114 is fixedly installed on burner nozzle 115 top, turbulent baffle 122 is fixedly installed in helix tube 12,
Vacuum heat-preserving system 2 comprises vacuum spool 21, screw 22, vacuum chamber 23 and temperature compensator 24, between the outer wall that vacuum spool 21, screw 22, vacuum chamber 23 and temperature compensator 24 are fixedly installed on heater compartment 4 and inwall;
Monitoring and control system 3 comprises monitoring system 31 and control valve system 32, monitoring system 31 comprises thermometer conductor interface 311, thermometric support 312, flame detector 313, air-fuel ratio sensor 314 and several first pressure meter 315, thermometer conductor interface 311 is fixedly installed on helix tube 12 top, thermometric support 312 is fixedly installed on large stifle 41, flame detector 313 and air-fuel ratio sensor 314 are fixedly installed on air door plate 42, and several first pressure meter 315 is fixedly installed in switch board;
Control valve system 32 comprises Gas Pipe control valve 321 and air hose control valve 322, Gas Pipe control valve 321 is fixedly installed on Gas Pipe 111 mouth of pipe place, air hose control valve 322 is fixedly installed on casing air 112 mouth of pipe place, gas control valve bag has the first ventilation ball valve 3211, first flap valve 3212, first pressure regulator valve 3213, first pressure switch 3214, first electromagnetic valve 3215, first flow control valve 3216 and strainer 3217, air hose control valve 322 comprises the second ventilation ball valve 3221, second flap valve 3222, second pressure regulator valve 3223, second pressure switch 3224, second electromagnetic valve 3225, second adjustable valve 3226, strainer 3227 and combustion mouth valve 3228.
Heater compartment 4 has large stifle 41 and air door plate 42.
Operating principle of the present invention and process:
Shown in Fig. 1 and Fig. 2, when the present invention works, open fuel gas transmission pump and air compressor, drive air-fuel ratio sensor 314, combustion gas and air is passed into by gas inlet b and air inlet c, combustion gas and air mix with certain proportion in smoke-box 116, after in smoke-box 116, the amount of combustion gas and air reaches requirement, drive point firearm 114 and flame detector 313, the mixture of combustion gas and air is lighted in smoke-box 116, combustion gas is discharged by smoke evacuation outlet a, air-fuel ratio sensor 314 and flame sensor 313 detect burning degree in real time, the proportioning of air demand and combustion gas and air can be controlled in real time, nitrogen enters in helix tube 12 by nitrogen inlet e, the nitrogen that heat will pass in thermal convection current mode by helix tube 12 by the high-temperature flue gas that combustion gas and air burning produce, the temperature of nitrogen and change thereof are reached ground by wire through thermometer conductor interface 311, when nitrogen outlet temperature reaches after 500 DEG C, by Monitoring and control system 3, the feeding flow of regulating gas and air, make nitrogen outlet temperature stabilization at 450 DEG C ~ 500 DEG C, by ground monitoring and control system 3, can Real-Time Monitoring Gas Pipe 111, force value in casing air 112, the high temperature nitrogen produced carries out in-situ retorting in shaft bottom to oil shale layer by nitrogen outlet opening d.
Claims (1)
1. an oil shale underground in situ transforms with vacuum screw tubular type nitrogen heater, it is characterized in that: be made up of combustion heat-exchange system (1), vacuum heat-preserving system (2), Monitoring and control system (3) and heater compartment (4), combustion heat-exchange system (1) is fixedly installed in heater compartment (4), between the outer wall that vacuum heat-preserving system (2) is fixedly installed on heater compartment (4) and inwall, Monitoring and control system (3) is fixedly installed in heater compartment (4);
Combustion heat-exchange system (1) comprises combustion apparatus (11) and helix tube (12) composition, the casing air (112) of helix tube (12) winding in combustion apparatus (11) is outside, combustion apparatus (11) comprises Gas Pipe (111), casing air (112), air guide flue gas composite member (113), igniter (114), burner nozzle (115), smoke-box (116), first one way valve (117) and the second one way valve (118), Gas Pipe (111) is fixedly installed in casing air (112), casing air (112) is fixedly installed on air guide flue gas composite member (113), first one way valve (117) is fixedly installed on Gas Pipe (111) bottom, second one way valve (118) is fixedly installed on heater compartment (4) bottom, igniter (114) is fixedly installed on burner nozzle (115) top, turbulent baffle (122) is fixedly installed in helix tube (12),
Vacuum heat-preserving system (2) comprises vacuum spool (21), screw (22), vacuum chamber (23) and temperature compensator (24), between the outer wall that vacuum spool (21), screw (22), vacuum chamber (23) and temperature compensator (24) are fixedly installed on heater compartment (4) and inwall;
Monitoring and control system (3) comprises monitoring system (31) and control valve system (32), monitoring system (31) comprises thermometer conductor interface (311), thermometric support (312), flame detector (313), air-fuel ratio sensor (314) and several first pressure meter (315), thermometer conductor interface (311) is fixedly installed on helix tube (12) top, thermometric support (312) is fixedly installed on large stifle (41), flame detector (313) and air-fuel ratio sensor (314) are fixedly installed on air door plate (42), several first pressure meter (315) is fixedly installed in switch board,
Control valve system (32) comprises Gas Pipe control valve (321) and air hose control valve (322), Gas Pipe control valve (321) is fixedly installed on Gas Pipe (111) mouth of pipe place, air hose control valve (322) is fixedly installed on casing air (112) mouth of pipe place, gas control valve bag has the first ventilation ball valve (3211), first flap valve (3212), first pressure regulator valve (3213), first pressure switch (3214), first electromagnetic valve (3215), first flow control valve (3216) and strainer (3217), air hose control valve (322) comprises the second ventilation ball valve (3221), second flap valve (3222), second pressure regulator valve (3223), second pressure switch (3224), second electromagnetic valve (3225), second adjustable valve (3226), strainer (3227) and combustion mouth valve (3228),
Heater compartment (4) has large stifle (41) and air door plate (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510169588.8A CN104775801B (en) | 2015-04-13 | 2015-04-13 | A kind of oil shale underground in situ conversion vacuum screw tubular type nitrogen heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510169588.8A CN104775801B (en) | 2015-04-13 | 2015-04-13 | A kind of oil shale underground in situ conversion vacuum screw tubular type nitrogen heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104775801A true CN104775801A (en) | 2015-07-15 |
| CN104775801B CN104775801B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510169588.8A Expired - Fee Related CN104775801B (en) | 2015-04-13 | 2015-04-13 | A kind of oil shale underground in situ conversion vacuum screw tubular type nitrogen heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965976A (en) * | 2017-12-25 | 2020-04-07 | 刘玉友 | Thick oil heating device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6056057A (en) * | 1996-10-15 | 2000-05-02 | Shell Oil Company | Heater well method and apparatus |
| CN102209835A (en) * | 2008-11-06 | 2011-10-05 | 美国页岩油公司 | Heater and method for recovering hydrocarbons from underground deposits |
| CN102906369A (en) * | 2010-04-27 | 2013-01-30 | 美国页岩油公司 | System for providing uniform heating to subterranean formation for recovery of mineral deposits |
| CN103069104A (en) * | 2010-08-30 | 2013-04-24 | 埃克森美孚上游研究公司 | Wellbore mechanical integrity for in situ pyrolysis |
| CN104481485A (en) * | 2014-11-10 | 2015-04-01 | 中国石油天然气股份有限公司 | Layered ignition device for in-situ combustion |
| CN204532311U (en) * | 2015-04-13 | 2015-08-05 | 吉林大学 | A kind of oil shale underground in situ transforms with vacuum screw tubular type nitrogen heater |
-
2015
- 2015-04-13 CN CN201510169588.8A patent/CN104775801B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6056057A (en) * | 1996-10-15 | 2000-05-02 | Shell Oil Company | Heater well method and apparatus |
| CN102209835A (en) * | 2008-11-06 | 2011-10-05 | 美国页岩油公司 | Heater and method for recovering hydrocarbons from underground deposits |
| CN102906369A (en) * | 2010-04-27 | 2013-01-30 | 美国页岩油公司 | System for providing uniform heating to subterranean formation for recovery of mineral deposits |
| CN103069104A (en) * | 2010-08-30 | 2013-04-24 | 埃克森美孚上游研究公司 | Wellbore mechanical integrity for in situ pyrolysis |
| CN104481485A (en) * | 2014-11-10 | 2015-04-01 | 中国石油天然气股份有限公司 | Layered ignition device for in-situ combustion |
| CN204532311U (en) * | 2015-04-13 | 2015-08-05 | 吉林大学 | A kind of oil shale underground in situ transforms with vacuum screw tubular type nitrogen heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965976A (en) * | 2017-12-25 | 2020-04-07 | 刘玉友 | Thick oil heating device |
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| CN104775801B (en) | 2017-03-08 |
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Granted publication date: 20170308 Termination date: 20170413 |