CN102828732A - Two-stage two-section backwash well inserting sealing sleeve protection separate injection pipe column and separate injection method thereof - Google Patents
Two-stage two-section backwash well inserting sealing sleeve protection separate injection pipe column and separate injection method thereof Download PDFInfo
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- CN102828732A CN102828732A CN2011101610082A CN201110161008A CN102828732A CN 102828732 A CN102828732 A CN 102828732A CN 2011101610082 A CN2011101610082 A CN 2011101610082A CN 201110161008 A CN201110161008 A CN 201110161008A CN 102828732 A CN102828732 A CN 102828732A
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- prefabricated sealing
- sealing drum
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- 238000002347 injection Methods 0.000 title claims abstract description 73
- 239000007924 injection Substances 0.000 title claims abstract description 73
- 238000007789 sealing Methods 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 93
- 238000003780 insertion Methods 0.000 claims description 36
- 230000037431 insertion Effects 0.000 claims description 36
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 abstract description 6
- 239000004576 sand Substances 0.000 abstract description 5
- 239000003208 petroleum Substances 0.000 abstract description 3
- 239000011229 interlayer Substances 0.000 abstract description 2
- 238000011001 backwashing Methods 0.000 abstract 1
- 230000005465 channeling Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000008187 granular material Substances 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
A two-stage two-section backwashing well inserting sealing sleeve separated injection string for petroleum industry water injection and a separated injection method thereof comprise an inserting sealer (2), a casing prefabricated sealing cylinder (3), a first-stage water injection layer section (14) and the like, wherein the casing prefabricated sealing cylinder (3) is arranged on the upper part of the top boundary of the first-stage water injection layer section (14), the casing prefabricated sealing cylinder (6) is arranged between the first-stage water injection layer section (14) and a second-stage water injection layer section (15), the casing prefabricated sealing cylinder (6) is simultaneously arranged between a water distributor (4) and a water distributor (7), the inserting sealer (2) is arranged in the middle of the casing prefabricated sealing cylinder (3), and the inserting sealer (5) is arranged in the casing prefabricated sealing cylinder (6), so that the occurrence of a channeling phenomenon can be effectively avoided; the sand jam removing success rate is high; the throwing and fishing measurement is high in preparation power; the pipe column has strong adaptability to high-temperature high-pressure deep inclined wells with high water injection pressure and large interlayer difference, and has long effective period.
Description
Technical field
The invention provides a kind of petroleum industry water filling and insert sealing shroud guarantor's separate injection tubing string tool and layered water injection method thereof with the back-washable well of two-stage two-segment.
Background technology
At present, separate injection tubing string is generally used in each oil field in multilayered reservoir waterflooding extraction process.Separate injection tubing string mainly comprises packer, injection well downhole flow regulator, the two-way anchor of well, two ball seat, screen casing, plug etc., during normal water filling, injects water and gets into the stratum from oil pipe through injection well downhole flow regulator, generally can satisfy a minute notes demand.Because separate injection tubing string structure imperfection; Also have following four deficiencies: (1) packer well-washing passage is less, and when water quality or hole condition were relatively poor, granule foreign was prone to be trapped in the well-flushing passage; Cause on the one hand the well-flushing passage to take place to stop up and can't well-flushing; Also can cause the flushing valve card on the other hand or be not closed completely, cause packer to occur channelling up and down, influence divides annotates an effect; (2) for the water injection well that is prone to shake out, separate injection tubing string is prone to that sand buries, the sand card, and the overhaul probability is high; (3) latus rectum is less in the packer central tube, and pulling is surveyed and joined the instrument card that is hampered easily, has reduced the pulling survey and has been made into power; (4) the dark inclined shaft of HTHP is complicated with packer construction, costs an arm and a leg, and divides at the inspection pipe and annotates in the operation, and instruments such as frequent change packer can cause investment big, and cost is high.
Summary of the invention
The object of the present invention is to provide a kind of petroleum industry water filling to insert sealing shroud and protect separate injection tubing string tool and dispensing method thereof with the back-washable well of two-stage two-segment.
Separate injection tubing string of the present invention mainly by the two-way anchor of well 1, insert the prefabricated sealing drum of sealer 2, sleeve pipe 3, injection well downhole flow regulator 4, insert sealer 5, the prefabricated sealing drum of sleeve pipe 6, injection well downhole flow regulator 7, oil pipe 8, two ball seat 9, screen casing 10, plug 11, sleeve pipe 12, artificial bottom of a well 13, first order water filling interval 14, second level water filling interval 15 form; The axial built-in overcurrent runner 2e of said insertion sealer body 2g; Insertion sealer body 2g upper end is provided with water inlet 2n and is communicated with overcurrent runner 2e, and insertion sealer body 2g lower end sets out mouth of a river 2o and is communicated with overcurrent runner 2e; Water inlet piston 2d is inlaid in the circular hole of overcurrent runner 2e upper end, and water inlet piston 2d upper surface is fixedly connected with water inlet spring 2a; Between upper cover body 2b lower surface and the insertion sealer body 2g water inlet sealing mat 2c is set, upper cover body 2b is connected with insertion sealer body 2g box 2m end external screw thread; Delivery port piston 2h is inlaid in the circular hole of overcurrent runner 2e lower end; Delivery port piston 2h lower surface is fixedly connected with delivery port spring 2i; Set out mouth of a river sealing mat 2j between lower cover 2k upper surface and the insertion sealer body 2g, lower cover 2k is connected with insertion sealer body 2g pin thread 2L end external screw thread.
Said overcurrent runner 2e inwall is delimited water inlet piston 2d movement position near inserting one side upper end, sealer axle center boss; Said overcurrent runner 2e inwall is delimited delivery port piston 2h movement position near axle center one side lower end boss.The external multiple-sealed circle 2f of said insertion sealer.
The dispensing method that utilizes the back-washable well of two-stage two-segment to insert sealing shroud guarantor separate injection tubing string is realized through following steps:
The first step; With the prefabricated sealing drum of said sleeve pipe 3 and the prefabricated sealing drum 6 of said sleeve pipe bore completion phase according to geologic requirements in advance with the production string lower going-into-well in; The prefabricated sealing drum 3 of sleeve pipe is preset at top, circle, first order water filling interval 14 top, and the prefabricated sealing drum 6 of sleeve pipe is preset between first order water filling interval 14 and the second level water filling interval 15;
Second step; Be lowered to separate injection tubing string; Plug 11, screen casing 10, two ball seat 9, injection well downhole flow regulator 7, insertion sealer 5 and injection well downhole flow regulator 4 are passed through the prefabricated sealing drum 3 of sleeve pipe successively; Realize inserting sealing until inserting sealer 5 with the prefabricated sealing drum 6 of sleeve pipe, insert sealer 2 and realize inserting the sealing location with the prefabricated sealing drum 3 of sleeve pipe.The prefabricated sealing drum 6 of said sleeve pipe is between injection well downhole flow regulator 4 and injection well downhole flow regulator 7; The two-way anchor 1 of well places the top of inserting sealer 2, and two ball seat 9, screen casing 10 and plug 11 place the bottom of oil pipe 8 successively;
The 3rd step; To insert sealer 2 is inserted among the prefabricated sealing drum 3 of sleeve pipe; To insert sealer 5 and be inserted among the prefabricated sealing drum 6 of sleeve pipe, said insertion sealer multiple-sealed circle 2f and said prefabricated sealing drum realize inserting sealing, separate oil sets annular space and realize seperated layer water injection;
The 4th step, open the oil pipe Water filling valve, close oil jacket annulus water injection valve, inject water and inject oil pipe and sleeve pipe annular space through every cover injection well downhole flow regulator of oil pipe and tubing string, water is injected water filling intervals at different levels;
The 5th step, open oil jacket annulus water injection valve, close the oil pipe Water filling valve; Water is injected oil pipe and the sleeve pipe annular space that inserts between sealer 2 and the insertion sealer 5, promote to insert the up compression water inlet of water inlet piston 2d spring 2a in the sealer 5, open water inlet 2n; Inject water and get into overcurrent runner 2e, promote the descending compression delivery port of delivery port piston 2h spring 2i, open delivery port 2o; Inject water and get into oil pipe and the sleeve pipe annular space that inserts sealer 5 bottoms; Get into oil pipe 8 through screen casing 10, two ball seat 9 at last, part water gets in the oil pipe 8 through injection well downhole flow regulator 4 and injection well downhole flow regulator 7 simultaneously, realizes the separate injection tubing string anti-flushing well.
The invention has the advantages that: (1) well-flushing passage is big, should not be stopped up by granule foreign, and flushing valve is closed easily, has avoided the flushing valve card or is not closed completely and makes packer occur channelling up and down; (2) for easy sand output well, separate desanding card success rate height, reduced the overhaul probability; (3) latus rectum is big in the insertion sealer central tube, and pulling is surveyed and is made into the power height; (4) tubing string is strong for being prone to the big dark inclined shaft compliance of HTHP of sand output well, corrosion and scaling well, water injection pressure height and interlayer difference, and separate injection tubing string is simple in structure, and few easy workout part is reusable, and period of validity is long.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is for inserting the sealer structural representation.
Fig. 3 is the sectional view of insertion sealer shown in Figure 2 along the A-A line.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further: separate injection tubing string of the present invention mainly by the two-way anchor of well 1, insert the prefabricated sealing drum of sealer 2, sleeve pipe 3, injection well downhole flow regulator 4, insert sealer 5, the prefabricated sealing drum of sleeve pipe 6, injection well downhole flow regulator 7, oil pipe 8, two ball seat 9, screen casing 10, plug 11, sleeve pipe 12, artificial bottom of a well 13, first order water filling interval 14, second level water filling interval 15 form; The axial built-in overcurrent runner 2e of said insertion sealer body 2g; Insertion sealer body 2g upper end is provided with water inlet 2n and is communicated with overcurrent runner 2e, and insertion sealer body 2g lower end sets out mouth of a river 2o and is communicated with overcurrent runner 2e; Water inlet piston 2d is inlaid in the circular hole of overcurrent runner 2e upper end, and water inlet piston 2d upper surface is fixedly connected with water inlet spring 2a; Between upper cover body 2b lower surface and the insertion sealer body 2g water inlet sealing mat 2c is set, upper cover body 2b is connected with insertion sealer body 2g box 2m end external screw thread; Delivery port piston 2h is inlaid in the circular hole of overcurrent runner 2e lower end; Delivery port piston 2h lower surface is fixedly connected with delivery port spring 2i; Set out mouth of a river sealing mat 2j between lower cover 2k upper surface and the insertion sealer body 2g, lower cover 2k is connected with insertion sealer body 2g pin thread 2L end external screw thread.
Said overcurrent runner 2e inwall is delimited water inlet piston 2d movement position near inserting one side upper end, sealer axle center boss; Said overcurrent runner 2e inwall is delimited delivery port piston 2h movement position near axle center one side lower end boss.The external multiple-sealed circle 2f of said insertion sealer.
The dispensing method that utilizes the back-washable well of two-stage two-segment to insert sealing shroud guarantor separate injection tubing string is realized through following steps:
The first step; With the prefabricated sealing drum of said sleeve pipe 3 and the prefabricated sealing drum 6 of said sleeve pipe bore completion phase according to geologic requirements in advance with the production string lower going-into-well in; The prefabricated sealing drum 3 of sleeve pipe is preset at top, circle, first order water filling interval 14 top, and the prefabricated sealing drum 6 of sleeve pipe is preset between first order water filling interval 14 and the second level water filling interval 15;
Second step; Be lowered to separate injection tubing string; Plug 11, screen casing 10, two ball seat 9, injection well downhole flow regulator 7, insertion sealer 5 and injection well downhole flow regulator 4 are passed through the prefabricated sealing drum 3 of sleeve pipe successively; Realize inserting sealing until inserting sealer 5 with the prefabricated sealing drum 6 of sleeve pipe, insert sealer 2 and realize inserting the sealing location with the prefabricated sealing drum 3 of sleeve pipe.The prefabricated sealing drum 6 of said sleeve pipe is between injection well downhole flow regulator 4 and injection well downhole flow regulator 7; The two-way anchor 1 of well places the top of inserting sealer 2, and two ball seat 9, screen casing 10 and plug 11 place the bottom of oil pipe 8 successively;
The 3rd step; To insert sealer 2 is inserted among the prefabricated sealing drum 3 of sleeve pipe; To insert sealer 5 and be inserted among the prefabricated sealing drum 6 of sleeve pipe, said insertion sealer multiple-sealed circle 2f and said prefabricated sealing drum realize inserting sealing, separate oil sets annular space and realize seperated layer water injection;
The 4th step, open the oil pipe Water filling valve, close oil jacket annulus water injection valve, inject water and inject oil pipe and sleeve pipe annular space through every cover injection well downhole flow regulator of oil pipe and tubing string, inject water filling intervals at different levels;
The 5th step, open oil jacket annulus water injection valve, close the oil pipe Water filling valve; Water is injected oil pipe and the sleeve pipe annular space that inserts between sealer 2 and the insertion sealer 5, promote to insert the up compression water inlet of water inlet piston 2d spring 2a in the sealer 5, open water inlet 2n; Inject water and get into overcurrent runner 2e, promote the descending compression delivery port of delivery port piston 2h spring 2i, open delivery port 2o; Inject water and get into oil pipe and the sleeve pipe annular space that inserts sealer 5 bottoms; Get into oil pipe 8 through screen casing 10, two ball seat 9 at last, part water gets in the oil pipe 8 through injection well downhole flow regulator 4 and injection well downhole flow regulator 7 simultaneously, realizes the separate injection tubing string anti-flushing well.
Claims (4)
1. the back-washable well of two-stage two-segment inserts sealing shroud and protects separate injection tubing string; Comprise the two-way anchor of well (1), insertion sealer (2), the prefabricated sealing drum of sleeve pipe (3), injection well downhole flow regulator (4), insert sealer (5), the prefabricated sealing drum of sleeve pipe (6), injection well downhole flow regulator (7), oil pipe (8), two ball seat (9), screen casing (10), plug (11), sleeve pipe (12), artificial bottom of a well (13), first order water filling interval (14), second level water filling interval (15); It is characterized in that: the axial built-in overcurrent runner of said insertion sealer body (2g) (2e); Insertion sealer body (2g) upper end is provided with water inlet (2n) and is communicated with overcurrent runner (2e), and insertion sealer body (2g) lower end sets out the mouth of a river (2o) and is communicated with overcurrent runner (2e); Water inlet piston (2d) is inlaid in the circular hole of overcurrent runner (2e) upper end, and water inlet piston (2d) upper surface is fixedly connected with water inlet spring (2a); Between upper cover body (2b) lower surface and the insertion sealer body (2g) water inlet sealing mat (2c) is set, upper cover body (2b) is connected with insertion sealer body (2g) box (2m) end external screw thread; Delivery port piston (2h) is inlaid in the circular hole of overcurrent runner (2e) lower end; Delivery port piston (2h) lower surface is fixedly connected with delivery port spring (2i); Set out mouth of a river sealing mat (2j) between lower cover (2k) upper surface and the insertion sealer body (2g), lower cover (2k) is connected with insertion sealer body (2g) pin thread (2L) end external screw thread.
2. the back-washable well of two-stage two-segment according to claim 1 inserts sealing shroud and protects separate injection tubing string, it is characterized in that: said overcurrent runner (2e) inwall is delimited water inlet piston (2d) movement position near inserting one side upper end, sealer axle center boss; Said overcurrent runner (2e) inwall is delimited delivery port piston (2h) movement position near inserting sealer axle center one side lower end boss.
3. the back-washable well of two-stage two-segment according to claim 2 inserts sealing shroud and protects separate injection tubing string, it is characterized in that: the external multiple-sealed circle of said insertion sealer (2f).
4. utilize the back-washable well of the said two-stage two-segment of claim 3 to insert the dispensing method that sealing shroud is protected separate injection tubing string, it is characterized in that: realize through following steps,
The first step; With the prefabricated sealing drum of said sleeve pipe (3) and the prefabricated sealing drum of said sleeve pipe (6) bore completion phase according to geologic requirements in advance with the production string lower going-into-well in; The prefabricated sealing drum of sleeve pipe (3) is preset at top, circle, first order water filling interval (14) top, and the prefabricated sealing drum of sleeve pipe (6) is preset between first order water filling interval (14) and the second level water filling interval (15);
Second step; Be lowered to separate injection tubing string; Plug (11), screen casing (10), two ball seat (9), injection well downhole flow regulator (7), insertion sealer (5) and injection well downhole flow regulator (4) are passed through the prefabricated sealing drum of sleeve pipe (3) successively; Realize inserting sealing until inserting sealer (5) and the prefabricated sealing drum of sleeve pipe (6), insert sealer (2) and the prefabricated sealing drum of sleeve pipe (3) and realize inserting the sealing location.The prefabricated sealing drum of said sleeve pipe (6) is positioned between injection well downhole flow regulator (4) and the injection well downhole flow regulator (7); The two-way anchor of well (1) places the top of inserting sealer (2), and two ball seats (9), screen casing (10) and plug (11) place the bottom of oil pipe (8) successively;
The 3rd step; To insert sealer (2) is inserted among the prefabricated sealing drum of sleeve pipe (3); To insert sealer (5) is inserted among the prefabricated sealing drum of sleeve pipe (6); Multiple-sealed circle of said insertion sealer (2f) and said prefabricated sealing drum realize inserting sealing, separate oil sets annular space and realize seperated layer water injection;
The 4th step, open the oil pipe Water filling valve, close oil jacket annulus water injection valve, inject water and inject oil pipe and sleeve pipe annular space through every cover injection well downhole flow regulator of oil pipe and tubing string, water is injected water filling intervals at different levels;
The 5th step, open oil jacket annulus water injection valve, close the oil pipe Water filling valve; Water is injected oil pipe and the sleeve pipe annular space that inserts between sealer (2) and the insertion sealer (5); Promote to insert water inlet piston (2d) up compression water inlet spring (2a) in the sealer (5), open water inlet (2n), inject water and get into overcurrent runner (2e); Promote delivery port piston (2h) descending compression delivery port spring (2i); Open delivery port (2o), inject water and get into oil pipe and the sleeve pipe annular space that inserts sealer (5) bottom, pass through screen casing (10), two ball seat (9) entering oil pipe (8) at last; Part water gets in the oil pipe (8) through injection well downhole flow regulator (4) and injection well downhole flow regulator (7) simultaneously, realizes the separate injection tubing string anti-flushing well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110161008.2A CN102828732B (en) | 2011-06-15 | 2011-06-15 | Two-stage two-section backwash well inserting sealing sleeve protection separate injection pipe column and separate injection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110161008.2A CN102828732B (en) | 2011-06-15 | 2011-06-15 | Two-stage two-section backwash well inserting sealing sleeve protection separate injection pipe column and separate injection method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102828732A true CN102828732A (en) | 2012-12-19 |
| CN102828732B CN102828732B (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110161008.2A Active CN102828732B (en) | 2011-06-15 | 2011-06-15 | Two-stage two-section backwash well inserting sealing sleeve protection separate injection pipe column and separate injection method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781506A (en) * | 2014-12-19 | 2016-07-20 | 中国石油天然气股份有限公司 | Separate-zone water injection method for oil well |
| CN106939784A (en) * | 2017-01-13 | 2017-07-11 | 上海全泽能源科技有限公司 | The positioning acidizing device of stratified injection well |
| CN113356813A (en) * | 2021-07-13 | 2021-09-07 | 中国石油化工股份有限公司 | Pressure drive injector, using pipe column and multi-round sub-layer pressure drive method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4625813A (en) * | 1985-06-17 | 1986-12-02 | Trivedi Arvind J | Method and apparatus for coring in subaqueous structures |
| CN2490313Y (en) * | 2001-04-27 | 2002-05-08 | 向志全 | High-pressure squeezing packer |
| CN2635917Y (en) * | 2003-08-01 | 2004-08-25 | 中国石化胜利油田有限公司采油工艺研究院 | Back wash device for mechanical sand prevention water injection well |
| CN2903354Y (en) * | 2005-12-01 | 2007-05-23 | 大庆油田有限责任公司 | Pressing crack saling working drum |
| CN2906054Y (en) * | 2006-06-23 | 2007-05-30 | 长葛市福侨电器材料厂 | Anti-sand anti-backflow and anti-fouling multifunctional eccentric separated-zone water injection string |
-
2011
- 2011-06-15 CN CN201110161008.2A patent/CN102828732B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4625813A (en) * | 1985-06-17 | 1986-12-02 | Trivedi Arvind J | Method and apparatus for coring in subaqueous structures |
| CN2490313Y (en) * | 2001-04-27 | 2002-05-08 | 向志全 | High-pressure squeezing packer |
| CN2635917Y (en) * | 2003-08-01 | 2004-08-25 | 中国石化胜利油田有限公司采油工艺研究院 | Back wash device for mechanical sand prevention water injection well |
| CN2903354Y (en) * | 2005-12-01 | 2007-05-23 | 大庆油田有限责任公司 | Pressing crack saling working drum |
| CN2906054Y (en) * | 2006-06-23 | 2007-05-30 | 长葛市福侨电器材料厂 | Anti-sand anti-backflow and anti-fouling multifunctional eccentric separated-zone water injection string |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781506A (en) * | 2014-12-19 | 2016-07-20 | 中国石油天然气股份有限公司 | Separate-zone water injection method for oil well |
| CN105781506B (en) * | 2014-12-19 | 2018-08-10 | 中国石油天然气股份有限公司 | Separate-zone water injection method for oil well |
| CN106939784A (en) * | 2017-01-13 | 2017-07-11 | 上海全泽能源科技有限公司 | The positioning acidizing device of stratified injection well |
| CN113356813A (en) * | 2021-07-13 | 2021-09-07 | 中国石油化工股份有限公司 | Pressure drive injector, using pipe column and multi-round sub-layer pressure drive method |
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| Publication number | Publication date |
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| CN102828732B (en) | 2015-09-23 |
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