CN103867171A - Production pipe string of electric submersible pump for offshore heavy oil thermal recovery - Google Patents
Production pipe string of electric submersible pump for offshore heavy oil thermal recovery Download PDFInfo
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- CN103867171A CN103867171A CN201210529671.8A CN201210529671A CN103867171A CN 103867171 A CN103867171 A CN 103867171A CN 201210529671 A CN201210529671 A CN 201210529671A CN 103867171 A CN103867171 A CN 103867171A
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- oil pipe
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- submersible pump
- electric submersible
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Abstract
The invention relates to a production pipe string of an electric submersible pump for offshore heavy oil thermal recovery. A 2-7/8 oil pipe, a 4-1/2 oil pipe and a 9-5/8 production casing form a channel a, a channel b and a channel c to form the production pipe string; the 2-7/8 oil pipe is connected with a Y joint which is connected with an electric submersible pump unit; the middle of the 2-7/8 oil pipe comprises a blind plug; the 2-7/8 oil pipe is communicated with the channel c through a short circuit through hole; a through hole is communicated with the channel b; the bottom end of the 4-1/2 oil pipe is connected with a conversion joint; the lower portion of the conversion joint is connected with a thermal insulation oil pipe; a check valve is arranged in the 2-7/8 oil pipe; the bottom end of the thermal insulation oil pipe is connected with a positioning packer; the bottom end of the positioning packer is provided with a top packer; the end portion of the 2-7/8 oil pipe is connected with an oil pipe with a guiding shoe. According to the production pipe string of the electric submersible pump for the offshore heavy oil thermal recovery, the temperature of the crude oil is decreased from 200 to 320 DEG C to 90 to 200 DEG C in the steam assisted gravity drainage implementation of the offshore heavy oil and the continuous lifting effect of the electric submersible pump is remarkable.
Description
Technical field
The present invention relates to a kind of Offshore Heavy Oil Field thermal recovery electric submersible pump producing tubular column, is that one combines concentric tube column, Y tubing string, downhole temperature monitoring, utilizes three annular spaces, realizes infiltration cooling to meet the artificial lift oil production method of electric submersible pump temperature resistant grade requirement.
Background technology
Because Offshore Heavy Oil Field oil reservoir buries dark (generally exceeding 900 meters), in the time implementing the heavy crude heat extraction technology such as SAGD (SAGD), must adopt the steam (generally exceeding 280 ° of C) of higher temperature, therefore only have also higher (generally the exceeding 260 ° of C) of oil recovery producing well temperature of 4-20 rice apart from steamed well.Meanwhile, due to air space above sea condition restriction, cannot implement the heavy crude heat extraction artificial lift mode based on sucker rod pump in oil field, land, need to adopt the latent centrifugal pump flow string of electricity to carry out artificial lift.Electric submersible pump has the restriction of temperature resistant grade, and in the high temperature fluid environment of heavy crude heat extraction, the electric submersible pump production cycle is very short, cannot realize the continuous lifting of Offshore Heavy Oil Field thermal recovery.In addition, due to marine workover treatment condition and expensive restriction, frequent well workover will reduce the economic benefit of heavy crude heat extraction greatly.
Therefore the electric submersible pump artificial lift method that, invention realizes Offshore Heavy Oil Field SAGD (SAGD) heating exploitation seems extremely important.
Summary of the invention
The one that the object of the present invention is to provide one to be applicable to marine SAGD (SAGD) heating exploitation combines concentric tube column, Y tubing string, downhole temperature monitoring, utilize three annular spaces, realize infiltration cooling to meet the artificial lift oil production method of electric submersible pump temperature resistant grade requirement.
A kind of Offshore Heavy Oil Field thermal recovery electric submersible pump producing tubular column of the present invention is by 2-7/8 " oil pipe, 4-1/2 " oil pipe, 9-5/8 " and production casing successively with one heart suit form three passage a, b, c; 2-7/8 " oil pipe is connected with Y-shaped connector, Y-shaped connector is connected with electric submersible pump unit by oil pipe, 2-7/8 " oil pipe middle part has the region between the heart and the diaphragm stifled, 2-7/8 " the stifled below of the region between the heart and the diaphragm, oil pipe middle part communicates with annular space passage c by short circuit through hole; Bottom has through hole and communicates with annular space passage b; 4-1/2 " oil pipe bottom is connected with crossover sub; Crossover sub bottom is connected with insulated tubing, the 2-7/8 in insulated tubing " ball-and-seat is housed in oil pipe; Be connected with location packer in insulated tubing bottom; Be provided with top packer in packer bottom, location, top packer is fixed on 9-5/8 " on production casing wall; 2-7/8 " oil pipe bottom is through top packer center, and end is connected with the oil pipe with guide shoe.
Passage a of the present invention be oily circulation passage on the region between the heart and the diaphragm is stifled, the region between the heart and the diaphragm stifled with ball-and-seat between for the oil mixing with water space that lowers the temperature, under ball-and-seat, be the crude oil admission passage after heating, viscosity reducing.
Passage b of the present invention is waterflood path, and injected water enters into 2-7/8 by through hole " oil pipe, mixes and the crude oil of lowering the temperature with oil stream.
Passage c of the present invention is the crude oil storage area after infiltration cooling, and in this space, crude oil arrives ground by the lifting of electric submersible pump unit and by passage a.
4-1/2 of the present invention " oil pipe outside adds optic fiber thermometer.
The present invention at sea viscous crude implements, among SAGD (SAGD) enforcement, high temperature crude oil (temperature 200-320 ° of C) to be cooled to middle temperature crude oil (90-200 ° of C), guarantees that the effect in the effectively continuous lifting of electric submersible pump is significant.
Accompanying drawing explanation
Fig. 1 Offshore Heavy Oil Field thermal recovery electric submersible pump producing tubular column structural representation
Wherein: 1,20 " waterproof casing; 2,13-3/8 " protective casing; 3,9-5/8 " production casing; 4, optic fiber thermometer; 5,2-7/8 " oil pipe; 6,4-1/2 " oil pipe; 7, Y-shaped connector; 8, oil pipe; 9, electric submersible pump unit; 10,4-1/2 " insulated tubing; 11, location packer; 12, top packer; 13, be connected to the oil pipe with guide shoe; 14, ball-and-seat; 51, through hole; 52, crossover sub; 53, the region between the heart and the diaphragm is stifled; 54, short circuit through hole;
Specific implementation method
A kind of Offshore Heavy Oil Field thermal recovery electric submersible pump producing tubular column of the present invention is by 2-7/8 " oil pipe 5,4-1/2 " oil pipe 6,9-5/8 " and production casing 3 successively with one heart suit form three passage a, b, c; 2-7/8 " oil pipe 5 is connected with Y-shaped connector 7, Y-shaped connector 7 is connected with electric submersible pump unit 9 by oil pipe 8,2-7/8 " oil pipe 5 middle parts have the region between the heart and the diaphragm block up 53,2-7/8 " oil pipe 5 middle part the region between the heart and the diaphragms communicate with annular space passage c by short circuit through hole 54 below blocking up; Bottom has through hole 51 and communicates with annular space passage b; 4-1/2 " oil pipe 6 bottoms are connected with crossover sub 52; Crossover sub 52 bottoms are connected with insulated tubing 10, the 2-7/8 in insulated tubing " ball-and-seat 14 is housed in oil pipe 5; Be connected with location packer 11 in insulated tubing bottom; Be provided with top packer 12 in packer 11 bottoms, location, top packer 12 is fixed on 9-5/8 " on production casing 3 walls; 2-7/8 " oil pipe 5 bottoms are through top packer 12 centers, end is connected with the oil pipe 13 with guide shoe, 9-5/8 " production casing 3 is positioned at 20 " waterproof casing 1,13-3/8 " protective casing 2.
Passage a of the present invention is oily circulation passage on the region between the heart and the diaphragm stifled 53, between the region between the heart and the diaphragm stifled 53 and ball-and-seat 14, for oil mixing with water cooling space, is the crude oil admission passage after heating, viscosity reducing under ball-and-seat 14.
Passage b of the present invention is waterflood path, and injected water enters into 2-7/8 by through hole 51 " oil pipe 5, mixes and the crude oil of lowering the temperature with oil stream.
Passage c of the present invention is the crude oil storage area after infiltration cooling, and in this space, crude oil arrives ground by the lifting of electric submersible pump unit and by passage a.
4-1/2 of the present invention " oil pipe 6 outsides add optic fiber thermometer 4.
Calculate the filling water yield according to optic fiber thermometer observed temperature, and with the flow velocity in 0-100 side/sky to the annotate water of 10-80 ° of C of passage b; Be dependent on optic fiber thermometer and measure and adjust the filling water yield, the fluid temperature (F.T.) in control channel c is at 90-200 ° of C.
Claims (3)
1. an Offshore Heavy Oil Field thermal recovery electric submersible pump producing tubular column; It is characterized in that: by 2-7/8 " oil pipe, 4-1/2 " oil pipe, 9-5/8 " and production casing successively with one heart suit form three passage a, b, c; 2-7/8 " oil pipe is connected with Y-shaped connector, Y-shaped connector is connected with electric submersible pump unit by oil pipe, 2-7/8 " oil pipe middle part has the region between the heart and the diaphragm stifled, 2-7/8 " the stifled below of the region between the heart and the diaphragm, oil pipe middle part communicates with annular space passage c by short circuit through hole; Bottom has through hole and communicates with annular space passage b; 4-1/2 " oil pipe bottom is connected with crossover sub; Crossover sub bottom is connected with insulated tubing, the 2-7/8 in insulated tubing " ball-and-seat is housed in oil pipe; Be connected with location packer in insulated tubing bottom; Be provided with top packer in packer bottom, location, top packer is fixed on 9-5/8 " on production casing wall; 2-7/8 " oil pipe bottom is through top packer center, and end is connected with the oil pipe with guide shoe.
2. Offshore Heavy Oil Field thermal recovery electric submersible pump producing tubular column according to claim 1; It is characterized in that: 4-1/2 " oil pipe outside adds optic fiber thermometer.
3. the application of a claim 1 Offshore Heavy Oil Field thermal recovery electric submersible pump producing tubular column; It is characterized in that:
Passage b is waterflood path, and injected water enters into 2-7/8 by through hole " oil pipe, mixes and the crude oil of lowering the temperature with oil stream;
Passage c is the crude oil storage area after infiltration cooling, and in this space, crude oil arrives ground by the lifting of electric submersible pump unit and by passage a;
Calculate the filling water yield according to optic fiber thermometer observed temperature, and with the flow velocity in 0-100 side/sky to the annotate water of 10-80 ° of C of passage b; Be dependent on optic fiber thermometer and measure and adjust the filling water yield, the fluid temperature (F.T.) in control channel c is at 90-200 ° of C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210529671.8A CN103867171B (en) | 2012-12-10 | 2012-12-10 | A kind of Offshore Heavy Oil Field thermal recovery electric submersible pump producing tubular column and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210529671.8A CN103867171B (en) | 2012-12-10 | 2012-12-10 | A kind of Offshore Heavy Oil Field thermal recovery electric submersible pump producing tubular column and application thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN103867171A true CN103867171A (en) | 2014-06-18 |
| CN103867171B CN103867171B (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210529671.8A Expired - Fee Related CN103867171B (en) | 2012-12-10 | 2012-12-10 | A kind of Offshore Heavy Oil Field thermal recovery electric submersible pump producing tubular column and application thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604509A (en) * | 2016-03-03 | 2016-05-25 | 中国海洋石油总公司 | Electric submersible pump pipe string for optical fiber monitoring of horizontal well |
| CN111188598A (en) * | 2020-01-16 | 2020-05-22 | 西南石油大学 | Seabed shallow layer natural gas hydrate exploitation and double-pump lifting device |
| CN111997577A (en) * | 2020-03-25 | 2020-11-27 | 中国海洋石油集团有限公司 | Heat-insulation type canned electric submersible pump injection-production integrated tubular column structure and technological method |
| CN112012706A (en) * | 2020-02-14 | 2020-12-01 | 中国海洋石油集团有限公司 | Offshore thickened oil steam huff-puff injection-production integrated device |
| CN113356815A (en) * | 2021-03-01 | 2021-09-07 | 中海油能源发展股份有限公司 | Heat-insulation straight-hole injection-production Y joint and use method thereof |
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| WO2005054746A2 (en) * | 2003-11-26 | 2005-06-16 | Aquatech International Corporation | Method for production of high pressure steam from produced water |
| CN101265802A (en) * | 2008-04-24 | 2008-09-17 | 中国海洋石油总公司 | Same well oil extraction gas injection system |
| CN201972681U (en) * | 2010-12-14 | 2011-09-14 | 中国海洋石油总公司 | Heat injection and mechanical oil extraction integrated device |
| CN102383770A (en) * | 2011-11-10 | 2012-03-21 | 西南石油大学 | Light oil mixing and water injection treatment multifunctional device for super heavy oil recovery |
| CN202220591U (en) * | 2011-09-22 | 2012-05-16 | 中国海洋石油总公司 | Heat injection and oil production device for injection-production separation oil well |
-
2012
- 2012-12-10 CN CN201210529671.8A patent/CN103867171B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005054746A2 (en) * | 2003-11-26 | 2005-06-16 | Aquatech International Corporation | Method for production of high pressure steam from produced water |
| CN101265802A (en) * | 2008-04-24 | 2008-09-17 | 中国海洋石油总公司 | Same well oil extraction gas injection system |
| CN201972681U (en) * | 2010-12-14 | 2011-09-14 | 中国海洋石油总公司 | Heat injection and mechanical oil extraction integrated device |
| CN202220591U (en) * | 2011-09-22 | 2012-05-16 | 中国海洋石油总公司 | Heat injection and oil production device for injection-production separation oil well |
| CN102383770A (en) * | 2011-11-10 | 2012-03-21 | 西南石油大学 | Light oil mixing and water injection treatment multifunctional device for super heavy oil recovery |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604509A (en) * | 2016-03-03 | 2016-05-25 | 中国海洋石油总公司 | Electric submersible pump pipe string for optical fiber monitoring of horizontal well |
| CN111188598A (en) * | 2020-01-16 | 2020-05-22 | 西南石油大学 | Seabed shallow layer natural gas hydrate exploitation and double-pump lifting device |
| CN112012706A (en) * | 2020-02-14 | 2020-12-01 | 中国海洋石油集团有限公司 | Offshore thickened oil steam huff-puff injection-production integrated device |
| CN111997577A (en) * | 2020-03-25 | 2020-11-27 | 中国海洋石油集团有限公司 | Heat-insulation type canned electric submersible pump injection-production integrated tubular column structure and technological method |
| CN111997577B (en) * | 2020-03-25 | 2022-05-20 | 中国海洋石油集团有限公司 | Injection-production integrated tubular column structure of heat-insulation canned electric submersible pump and technological method |
| CN113356815A (en) * | 2021-03-01 | 2021-09-07 | 中海油能源发展股份有限公司 | Heat-insulation straight-hole injection-production Y joint and use method thereof |
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| Publication number | Publication date |
|---|---|
| CN103867171B (en) | 2016-06-08 |
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Granted publication date: 20160608 Termination date: 20191210 |
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