CN102434138A - Hot water injection circulation viscosity reduction system for producing ultra-deep ultra-heavy oil and application method thereof - Google Patents
Hot water injection circulation viscosity reduction system for producing ultra-deep ultra-heavy oil and application method thereof Download PDFInfo
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- CN102434138A CN102434138A CN2011103107810A CN201110310781A CN102434138A CN 102434138 A CN102434138 A CN 102434138A CN 2011103107810 A CN2011103107810 A CN 2011103107810A CN 201110310781 A CN201110310781 A CN 201110310781A CN 102434138 A CN102434138 A CN 102434138A
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Abstract
The invention relates to a hot water injection circulation viscosity reduction system for producing ultra-deep ultra-heavy oil and an application method thereof, belonging to the field of viscosity reduction production of heavy oil in an oilfield. The hot water injection circulation viscosity reduction system comprises a ground circulation system and an underground circulation viscosity reduction system, wherein the ground circulation system is formed by sequentially connecting a clear water tank, a water softening device, a softened water tank, a water supply pump, a magnetization device, a water jacket furnace and a water injection pump, which are arranged on a circulating injection pipeline, as well as a pressure relief valve on a circulating outflow pipeline; and the underground circulation system adopts a liquid injection and outflow pipeline constituted by a heat insulation oil pipe annulus, a sleeve annulus and a packer, as well as an inner-layer oil pipe, the packer, a sieve pipe and a screw plug to constitute an oil production pipeline. The hot water injection circulation viscosity reduction system according to the invention can reduce the viscosity of heavy oil, be conductive to production of the ultra-deep ultra-heavy oil and solve the problems of low effective pump efficiency, short pump inspection period of high energy consumption in a viscosity reduction process by light oil blending, and further has the advantages of low oil production cost, easiness in popularization and application and the like.
Description
Technical field
The present invention relates to a kind of hot-water flooding circulation viscosity reduction system and application process of ultra-deep ultra-thick oil exploitation, belong to oil-field thick-oil viscosity reduction exploitation field.
Background technology
Ultra-deep ultra-thick oil has good flowability in oil reservoir, can flow directly into pit shaft, but along with the viscous crude lifting, viscous crude and ground interlayer generation interchange of heat, temperature reduces, and viscosity increases, and causes viscous crude lifting difficulty.For strengthening the flowability of viscous crude in pit shaft, just need the viscosity reducing technology to reduce viscosity of thickened oil.
At present, the main viscosity reducing technology of ultra-deep ultra-thick oil is to mix rare viscosity reduction.Mixing rare viscosity reduction is that thin oil is incorporated in the pit shaft viscous crude, utilizes the similar compatibility property of viscous crude thin oil to reduce viscosity of thickened oil through the dilution viscous crude.But there are some unavoidable problem in this technology: mix thin oil when rare and account for that to cause machine to take out the effective pump efficiency of well low for the part discharge capacity of pump; Thin oil resource scarcity or do not have the heavy oil block of thin oil can't be adopted rare viscosity reduction technology of mixing; The thin oil viscous crude can cause viscous crude to go into pump when mixing inequality, and pump detection period is shortened; There are price difference in thin oil and viscous crude, mix in the viscous crude, and sale price reduces.
At present, for the exploitation of ultra-deep ultra-thick oil viscosity reduction, also not than mixing rare viscosity reduction more efficient methods.But because domestic most heavy crude reservoir is faced with the predicament of " thin oil is in short supply ", and mixes in rare viscosity reduction technology and exist problems again, in order to overcome the deficiency of mixing rare viscosity reduction technology, the research of carrying out the ultra-deep ultra-thick oil viscosity reducing just seems particularly important.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of prior art; A kind of hot-water flooding circulation viscosity reduction system and application process of ultra-deep ultra-thick oil exploitation are provided; Adopt this invention can reduce viscosity of thickened oil, improve its flowability in pit shaft, help the exploitation of ultra-deep ultra-thick oil; And can solve the problems such as effectively pump efficiency is low in rare viscosity reduction technology, and pump detection period is short of mixing.
The present invention realizes that the technical scheme that its purpose adopts is:
The hot-water flooding circulation viscosity reduction system of a kind of ultra-deep ultra-thick oil exploitation of the present invention; Comprise the ground circulating system and down-hole circulation viscosity reduction system; The said ground circulating system comprises clear water jar, water softening device, water softener tank, supply-water pump, magnetizing assembly, water jacket furnace, water injecting pump, relief valve, circulation injection pipeline, and pipeline is flowed out in circulation; The said down-hole circulating system comprises insulated tubing, sleeve pipe, internal layer oil pipe, packer, screen casing, plug.
The relief valve that the said ground circulating system is injected on clear water jar, water softening device, water softener tank, supply-water pump, magnetizing assembly, water jacket furnace, water injecting pump and the circulation outflow pipeline on the pipeline by circulation connects to form successively; Said clear water jar and water softener tank are water storage device; Before said magnetizing assembly and water softening device are mounted in water jacket furnace and supply-water pump, prevent tube wall incrustation, guarantee the good antiscale property treating apparatus of the normal operation of the circulating system; Said supply-water pump, water injecting pump, relief valve guarantee the pressure balance of the circulating system and power are provided for the circulating system; Described water jacket furnace is meant and can water be heated to the heater more than 95 ℃; Said circulation is injected the pipeline two ends and is linked to each other with well head insulated tubing annular space with the clear water jar, and circulation is flowed out pipeline one end and linked to each other with casing annulus, and the circulation that the other end is connected between water softening device and the water softener tank is injected on the pipeline.The liquid that the said down-hole circulating system is made up of insulated tubing annular space, casing annulus, packer injects and flows out pipeline and formed the oil recovery production flow line by internal layer oil pipe, packer, screen casing, plug.
The hot-water flooding circulation viscosity reduction system application method of a kind of ultra-deep ultra-thick oil exploitation of the present invention may further comprise the steps:
1. tubing and casing is carried out supporting and type selecting, guarantee complementing one another of sleeve pipe, insulated tubing, internal layer oil pipe, do not interfere, casing size should guarantee 7 ' ' more than, the insulated tubing size elects 4 as
1/
2' ', the internal layer tubing size elects 2 as
7/
8' ';
2. with the internal layer oil pipe of insulated tubing, band packer successively in the lower going-into-well.The instlated tubular annular space upper end and the circulation that form are injected pipeline and are linked to each other, and the lower end is separated insulated tubing annular space and oil reservoir by packer; The casing annulus upper end that forms links to each other with the circulation export pipeline, and the lower end is separated casing annulus and oil reservoir by packer, and insulated tubing annular space and casing annulus maintenance communicates in the lower end;
3. adopting water is circulatory mediator; And require and the sticking warm field distribution rule of pit shaft is calculated parameters such as the depth of round of confirming water outlet, circulating temperature, circular flow, circulating pressure according to viscous crude is mobile, determine the depth of setting of insulated tubing again according to loop parameter;
4. according to the requirement of loop parameter, ground installation clear water jar, water softening device, water softener tank, supply-water pump, magnetizing assembly, water jacket furnace, water injecting pump, relief valve are carried out supporting type selecting, and carry out connection;
5. open water injecting pump, supply-water pump, ground installations such as water jacket furnace, operation hot-water flooding circulation viscosity reduction system realizes the hot-water flooding circulation viscosity reduction that ultra-deep ultra-thick oil is exploited.
The present invention compared with prior art has the following advantages: 1, the circulatory mediator of pit shaft heating is a hot water, and it carries heat energy height, low, the safety and environmental protection of cost.2, through increasing circulating pressure and hot water circulating flow, can make depth of round reach 3500m, can carry out heat tracing, make viscous crude in pit shaft, have good flowability all the time, realize not mixing rare following exploitation ultra-deep ultra-thick oil to ultra-deep ultra-thick oil.The present invention can solve that to mix the effective pump efficiency that exists in rare viscosity reduction technology low, and pump detection period is short, the problem that energy consumption is high, and have cost for oil production low, advantage such as be prone to apply.
Description of drawings
Fig. 1 is the hot-water flooding circulation viscosity reduction system schematic of a kind of ultra-deep ultra-thick oil exploitation of the present invention.
Among the figure: 1. the clear water jar, 2. water softening device, 3. water softener tank, 4. supply-water pump, 5. circulation inject pipeline, 6. magnetizing assembly, 7. water jacket furnace, 8. water injecting pump, 9. insulated tubing, 10. pipelines, 16. relief valves are flowed out in sleeve pipe, 11. internal layer oil pipes, 12. packers, 13. screen casings, 14. plugs, 15. circulations.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
As shown in Figure 1; The hot-water flooding circulation viscosity reduction system of a kind of ultra-deep ultra-thick oil exploitation of the present invention; Comprise the ground circulating system and down-hole circulation viscosity reduction system; The said ground circulating system comprises clear water jar 1, water softening device 2, water softener tank 3, supply-water pump 4, magnetizing assembly 6, water jacket furnace 7, water injecting pump 8, relief valve 16, circulation injection pipeline 5, and pipeline 15 is flowed out in circulation; The said down-hole circulating system comprises insulated tubing 9, sleeve pipe 10, internal layer oil pipe 11, packer 12, screen casing 13, plug 14.
The relief valve 16 that the said ground circulating system is injected on clear water jar 1, water softening device 2, water softener tank 3, supply-water pump 4, magnetizing assembly 6, water jacket furnace 7, water injecting pump 8 and the circulation outflow pipeline 15 on the pipeline 5 by circulation connects to form successively; Said clear water jar 1 is a water storage device with water softener tank 2; Before said magnetizing assembly 3 and water softening device 4 are mounted in water jacket furnace 7 and supply-water pump 4, prevent tube wall incrustation, guarantee the good antiscale property treating apparatus of the normal operation of the circulating system; Said supply-water pump 4, water injecting pump 8, relief valve 16 guarantee the pressure balance of the circulating systems and power are provided for the circulating system; Described water jacket furnace 7 is meant and can water be heated to the heater more than 95 ℃; Said circulation is injected pipeline 5 two ends and is linked to each other with well head insulated tubing 9 annular spaces with clear water jar 1, and circulation is flowed out pipeline 15 1 ends and linked to each other with sleeve pipe 10 annular spaces, and the circulation that the other end is connected between water softening device 2 and the water softener tank 3 is injected on the pipeline 5.The liquid that the said down-hole circulating system is made up of insulated tubing 9 annular spaces, sleeve pipe 10 annular spaces, packer 12 injects and flows out pipeline and formed the oil recovery production flow line by internal layer oil pipe 11, packer 12, screen casing 13, plug 14.
The hot-water flooding circulation viscosity reduction system application method of a kind of ultra-deep ultra-thick oil exploitation of the present invention may further comprise the steps:
1. tubing and casing is carried out supporting and type selecting, should guarantee complementing one another of sleeve pipe 10, insulated tubing 9, internal layer oil pipe 11, do not interfere, sleeve pipe 10 sizes should guarantee 7 ' ' more than, insulated tubing 9 sizes elect 4 as
1/
2' ', internal layer oil pipe 11 sizes elect 2 as
7/
8' ';
2. with the internal layer oil pipe 11 of insulated tubing 9, band packer 12 successively in the lower going-into-well.The instlated tubular 9 annular spaces upper end and the circulation that form are injected pipeline 5 and are linked to each other, and the lower end is separated insulated tubing annular space and oil reservoir by packer 12; The sleeve pipe 10 annular spaces upper end that forms links to each other with circulation export pipeline 15, and the lower end is separated sleeve pipe 10 annular spaces and oil reservoir by packer 12, and insulated tubing 9 annular spaces and sleeve pipe 10 annular spaces maintenance communicates in the lower end;
3. adopting water is circulatory mediator; And require and the sticking warm field distribution rule of pit shaft is calculated parameters such as the depth of round of confirming water outlet, circulating temperature, circular flow, circulating pressure according to viscous crude is mobile, determine the depth of setting of insulated tubing 9 again according to loop parameter;
4. according to the requirement of loop parameter, ground installation clear water jar 1, water softening device 2, water softener tank 3, supply-water pump 4, magnetizing assembly 6, water jacket furnace 7, water injecting pump 8, relief valve 16 are carried out supporting type selecting, and carry out connection;
5. open supply-water pump 4, water injecting pump 8, water jacket furnace 7 ground installations such as grade, operation hot-water flooding circulation viscosity reduction system realizes the hot-water flooding circulation viscosity reduction that ultra-deep ultra-thick oil is exploited.
Claims (2)
1. the hot-water flooding circulation viscosity reduction system of a kind of ultra-deep ultra-thick oil of the present invention exploitation; Comprise the ground circulating system and down-hole circulation viscosity reduction system, it is characterized in that: the relief valve (16) that the described ground circulating system is injected on clear water jar (1), water softening device (2), water softener tank (3), supply-water pump (4), magnetizing assembly (6), water jacket furnace (7), water injecting pump (8) and the circulation outflow pipeline (15) on the pipeline (5) by circulation connects to form successively; Said clear water jar (1) and water softener tank (2) are water storage device; Described magnetizing assembly (3) and water softening device (4) are mounted in water jacket furnace (7) and supply-water pump (4) is preceding, prevents tube wall incrustation, guarantees the good antiscale property treating apparatus of the normal operation of the circulating system; Said supply-water pump (4), water injecting pump (8), relief valve (16) guarantee the pressure balance of the circulating system and power are provided for the circulating system; Described water jacket furnace (7) is meant and can water be heated to the heater more than 95 ℃; Said circulation is injected pipeline (5) two ends and is linked to each other with well head insulated tubing (9) annular space with clear water jar (1); Circulation is flowed out pipeline (15) one ends and is linked to each other with sleeve pipe (10) annular space, and the circulation that the other end is connected between water softening device (2) and the water softener tank (3) is injected on the pipeline (5); The oil recovery production flow line that the liquid that the said down-hole circulating system is made up of insulated tubing (9) annular space, sleeve pipe (10) annular space, packer (12) injects and flows out pipeline and be made up of internal layer oil pipe (11), packer (12), screen casing (13), plug (14).
2. the hot-water flooding circulation viscosity reduction system application method of ultra-deep ultra-thick oil exploitation is characterized in that may further comprise the steps:
1. tubing and casing is carried out supporting and type selecting, should guarantee complementing one another of sleeve pipe (10), insulated tubing (9), internal layer oil pipe (11), do not interfere, sleeve pipe (10) size should guarantee 7 ' ' more than, insulated tubing (9) size elects 4 as
1/
2' ', internal layer oil pipe (11) size elects 2 as
7/
8' ';
2. with the internal layer oil pipe (11) of insulated tubing (9), band packer (12) successively in the lower going-into-well, the instlated tubular of formation (9) annular space upper end links to each other with circulation injection pipeline (5), and the lower end is separated insulated tubing annular space and oil reservoir by packer (12); Sleeve pipe (10) the annular space upper end that forms links to each other with circulation export pipeline (15), and the lower end is separated sleeve pipe (10) annular space and oil reservoir by packer (12), and insulated tubing (9) annular space and sleeve pipe (10) annular space maintenance communicates in the lower end;
3. adopting water is circulatory mediator; And require and the sticking warm field distribution rule of pit shaft is calculated parameters such as the depth of round of confirming water outlet, circulating temperature, circular flow, circulating pressure according to viscous crude is mobile, determine the depth of setting of insulated tubing (9) again according to loop parameter;
4. according to the requirement of loop parameter; Ground installation clear water jar (1), water softening device (2), water softener tank (3), supply-water pump (4), magnetizing assembly (6), water jacket furnace (7), water injecting pump (8), relief valve (16) are carried out supporting type selecting, and carry out connection;
5. open supply-water pump (4), water injecting pump (8), water jacket furnace ground installations such as (7), operation hot-water flooding circulation viscosity reduction system realizes the hot-water flooding circulation viscosity reduction that ultra-deep ultra-thick oil is exploited.
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| CN2011103107810A CN102434138A (en) | 2011-10-14 | 2011-10-14 | Hot water injection circulation viscosity reduction system for producing ultra-deep ultra-heavy oil and application method thereof |
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| CN2011103107810A CN102434138A (en) | 2011-10-14 | 2011-10-14 | Hot water injection circulation viscosity reduction system for producing ultra-deep ultra-heavy oil and application method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032056A (en) * | 2012-12-13 | 2013-04-10 | 中国石油化工股份有限公司 | Method and device for reducing viscosity of shaft applicable to extremely-viscous oil recovery |
| CN104843621A (en) * | 2015-03-26 | 2015-08-19 | 西南石油大学 | Gas well oil jacket annular protecting fluid replacement device and method thereof |
| CN105625984A (en) * | 2014-11-07 | 2016-06-01 | 中国石油化工股份有限公司 | Sucker-rod pump closed circulation watering paraffin-prevention device |
| CN105735955A (en) * | 2016-02-19 | 2016-07-06 | 栾良辉 | Oil extraction system for viscous heavy oil |
| CN105823032A (en) * | 2016-06-01 | 2016-08-03 | 天津中油锐思技术开发有限责任公司 | Waste water composite heat carrier generator and composite heat carrier generation method |
| CN105841129A (en) * | 2016-06-01 | 2016-08-10 | 天津中油锐思技术开发有限责任公司 | Waste water composite heat carrier generator and composite heat carrier generation method |
| CN107387022A (en) * | 2017-09-11 | 2017-11-24 | 山东聊城金泰节能科技有限公司 | A kind of gas well Special electromagnetic circulation tubing and casing anti-block apparatus and its application |
| CN110617031A (en) * | 2019-10-17 | 2019-12-27 | 大庆天工开物能源科技有限公司 | Shaft wax-proof sand-proof tubular column for oil extraction in oil field |
| CN111287707A (en) * | 2020-02-19 | 2020-06-16 | 西南石油大学 | Device and method for realizing resistance reduction of thickened oil by utilizing wake flow to generate electricity and heat seawater |
| CN112282701A (en) * | 2019-07-25 | 2021-01-29 | 中国石油天然气股份有限公司 | Ground injection system for oil well blockage removal |
| CN112727399A (en) * | 2021-03-17 | 2021-04-30 | 克拉玛依胜利高原机械有限公司 | High-pressure pipe column sealing circulating heat tracing wax-proof device and implementation process |
| CN115110910A (en) * | 2022-06-30 | 2022-09-27 | 中海石油（中国）有限公司天津分公司 | Casting and fishing electric pump injection and production integrated system |
| CN115163016A (en) * | 2022-07-28 | 2022-10-11 | 中国海洋石油集团有限公司 | Reservoir injection-production integrated tubular column equipment and reservoir injection-production method |
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Cited By (19)
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| CN103032056A (en) * | 2012-12-13 | 2013-04-10 | 中国石油化工股份有限公司 | Method and device for reducing viscosity of shaft applicable to extremely-viscous oil recovery |
| CN103032056B (en) * | 2012-12-13 | 2016-04-20 | 中国石油化工股份有限公司 | A kind of method and apparatus being applicable to the viscosity reducing of super heavy oil recovery |
| CN105625984A (en) * | 2014-11-07 | 2016-06-01 | 中国石油化工股份有限公司 | Sucker-rod pump closed circulation watering paraffin-prevention device |
| CN104843621A (en) * | 2015-03-26 | 2015-08-19 | 西南石油大学 | Gas well oil jacket annular protecting fluid replacement device and method thereof |
| CN105735955A (en) * | 2016-02-19 | 2016-07-06 | 栾良辉 | Oil extraction system for viscous heavy oil |
| CN105823032B (en) * | 2016-06-01 | 2018-02-23 | 中油锐思技术开发有限责任公司 | Waste water composite heat carrier generator and composite heat carrier generation method |
| CN105841129A (en) * | 2016-06-01 | 2016-08-10 | 天津中油锐思技术开发有限责任公司 | Waste water composite heat carrier generator and composite heat carrier generation method |
| CN105823032A (en) * | 2016-06-01 | 2016-08-03 | 天津中油锐思技术开发有限责任公司 | Waste water composite heat carrier generator and composite heat carrier generation method |
| CN105841129B (en) * | 2016-06-01 | 2018-05-18 | 中油锐思技术开发有限责任公司 | Waste water composite heat carrier generator and composite heat carrier generation method |
| CN107387022A (en) * | 2017-09-11 | 2017-11-24 | 山东聊城金泰节能科技有限公司 | A kind of gas well Special electromagnetic circulation tubing and casing anti-block apparatus and its application |
| CN112282701A (en) * | 2019-07-25 | 2021-01-29 | 中国石油天然气股份有限公司 | Ground injection system for oil well blockage removal |
| CN110617031A (en) * | 2019-10-17 | 2019-12-27 | 大庆天工开物能源科技有限公司 | Shaft wax-proof sand-proof tubular column for oil extraction in oil field |
| CN111287707A (en) * | 2020-02-19 | 2020-06-16 | 西南石油大学 | Device and method for realizing resistance reduction of thickened oil by utilizing wake flow to generate electricity and heat seawater |
| CN111287707B (en) * | 2020-02-19 | 2021-09-21 | 西南石油大学 | Device and method for realizing resistance reduction of thickened oil by utilizing wake flow to generate electricity and heat seawater |
| CN112727399A (en) * | 2021-03-17 | 2021-04-30 | 克拉玛依胜利高原机械有限公司 | High-pressure pipe column sealing circulating heat tracing wax-proof device and implementation process |
| CN112727399B (en) * | 2021-03-17 | 2024-05-28 | 克拉玛依胜利高原机械有限公司 | High-pressure pipe column sealing circulation heat tracing wax-preventing device and implementation process |
| CN115110910A (en) * | 2022-06-30 | 2022-09-27 | 中海石油（中国）有限公司天津分公司 | Casting and fishing electric pump injection and production integrated system |
| CN115163016A (en) * | 2022-07-28 | 2022-10-11 | 中国海洋石油集团有限公司 | Reservoir injection-production integrated tubular column equipment and reservoir injection-production method |
| CN115163016B (en) * | 2022-07-28 | 2023-09-22 | 中国海洋石油集团有限公司 | Reservoir injection and production integrated tubular column equipment and reservoir injection and production method |
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Application publication date: 20120502 |