CN102337873A - Multi-channel separate injection pipe column for oil pipe of polymer - Google Patents
Multi-channel separate injection pipe column for oil pipe of polymer Download PDFInfo
- Publication number
- CN102337873A CN102337873A CN2011102565830A CN201110256583A CN102337873A CN 102337873 A CN102337873 A CN 102337873A CN 2011102565830 A CN2011102565830 A CN 2011102565830A CN 201110256583 A CN201110256583 A CN 201110256583A CN 102337873 A CN102337873 A CN 102337873A
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- Prior art keywords
- injection
- pipe
- oil pipe
- packer
- allocation device
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- 238000002347 injection Methods 0.000 title claims abstract description 86
- 239000007924 injection Substances 0.000 title claims abstract description 86
- 229920000642 polymer Polymers 0.000 title claims abstract description 15
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A multi-channel polymer tubing separate injection string. The multi-channel polymer oil pipe separate injection string comprises an oil pipe, wherein the lower end of the oil pipe is sequentially connected with a first-level packer, a first-level injection allocation device, a second-level packer, a second-level injection allocation device, a third-level packer and a third-level injection allocation device, at least two inner pipes are arranged in the oil pipe, at least 2 through holes are axially arranged in a central pipe of the packer and are correspondingly matched with the inner pipes in the oil pipe, at least 2 inner pipes of the injection allocation device are arranged in the injection allocation device, the inner pipes of the injection allocation device are correspondingly matched with the through holes in the central pipe, an annular channel between the outer pipe and the inner pipe of the oil pipe is correspondingly communicated with a packer channel of the packer; the structure forms at least 3 channels of separate injection columns. The pipe column realizes the quality-based and partial-pressure injection of the polymer on the ground in a polymer injection well which is injected underground in multiple layers, simplifies the testing process and improves the efficiency of layered water allocation.
Description
Technical field
The present invention relates to oil recovery field, oil field a kind of polymer multichannel oil pipe separate injection tubing string.
Background technology
At present use in the oil field gathers and drives branch notes technology and mainly comprise concentric zonal injection technology of ring-like relief groove and single tube branch matter dividing potential drop injection technology.Can not realize injecting with time-division matter dividing potential drop for two sections above intervals of level, and test technology is complicated, stratified water amount allotment efficient is low.
Summary of the invention
In order to solve the problem that exists in the background technology; The present invention provides a kind of polymer multichannel oil pipe separate injection tubing string; The polymer injection well that this tubing string divides multilayer to inject to the down-hole is realized the branch matter dividing potential drop injection of polymer on ground, simplified test technology, has improved stratified water amount allotment efficient.
Technical scheme of the present invention is: this polymer multichannel oil pipe separate injection tubing string comprises oil pipe; The oil pipe lower end connects one-level packer, one-level injection allocation device, secondary packer, secondary injection allocation device, three grades of packers, three grades of injection allocation devices successively; Be provided with pipe at least two in the described oil pipe; The central tube inner shaft of described packer is to being provided with 2 through holes at least; The corresponding cooperation of interior pipe in through hole and the oil pipe is provided with pipe at least 2 injection allocation devices in the described injection allocation device, annotate pipe and the interior corresponding cooperation of through hole of central tube in the device; Corresponding the communicating of packer passage of circular passage and packer between the outer tube of oil pipe and the interior pipe, corresponding the communicating of injection allocation device passage of the packer passage of packer and injection allocation device; Well head is provided with one-level injection channel, secondary injection channel, three grades of injection channels; The circular passage communicates between the outer tube of one-level injection channel and oil pipe and the interior pipe; The secondary injection channel communicates with dividing the notes passage; Three grades of injection channels communicate with dividing the notes passage, and said structure has been formed at least 3 passage separate injection tubing strings.
The present invention has following beneficial effect: the present invention can realize the branch matter dividing potential drop injection of two sections above intervals of level, and each layer injection rate can be controlled at well head, simplified test technology, has improved stratified water amount allotment efficient; The 2nd, the pressure of each interval can control to adjust through at well head different injection allocation cores being installed with polymer molecular weight, and dividing potential drop branch matter is injected effect and guaranteed easily.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is structural representations of oil pipe;
Accompanying drawing 3 is A-A sectional views of Fig. 2;
Accompanying drawing 4 is packer construction sketch mapes;
Accompanying drawing 5 is injection allocation device structural representations;
Accompanying drawing 6 is A-A sectional views of Fig. 5.
The specific embodiment:
Below in conjunction with accompanying drawing the present invention is described further:
Shown in accompanying drawing; This polymer multichannel oil pipe separate injection tubing string comprises oil pipe 5; Oil pipe 5 lower ends connect one-level packer 7, one-level injection allocation device 10, secondary packer 8, secondary injection allocation device 11, three grades of packers 9, three grades of injection allocation devices 12 successively; Be provided with in the oil pipe 5 and manage 5-1 at least in two, the central tube 1-2 inner shaft of described packer is to being provided with 2 through hole 13-2 at least, through hole 13-2 and the interior corresponding cooperation of interior pipe 5-1 of oil pipe; Be provided with pipe 6-3 at least 2 injection allocation devices in the described injection allocation device; Annotate pipe 6-3 and the interior corresponding cooperation of through hole 13-2 of central tube 1-2 in the device, corresponding the communicating of packer passage 14-2 of circular passage and packer between the outer tube 4-1 of oil pipe and the interior pipe 5-1, corresponding the communicating of injection allocation device passage 9-3 of the packer passage 14-2 of packer and injection allocation device; Well head is provided with one-level injection channel 1, secondary injection channel 2, three grades of injection channels 3; The circular passage communicates between the outer tube 4-1 of one-level injection channel 1 and oil pipe and the interior pipe 5-1; Secondary injection channel 2 communicates with dividing notes passage 4, and three grades of injection channels 3 communicate with dividing notes passage 6.
The one-level injection channel 1 of ground installation is connected with one-level injection allocation device 10 through the oil pipe annular space, and realizes first floor is injected through the packer passage 14-2 of one-level packer 7 set inside; Secondary injection channel 2 is connected with secondary injection allocation device 11 through interior pipe 5-1, and realizes the second layer is injected through the through hole 13-2 of secondary packer 8 set inside; Three grades of injection channels 3 are connected with three grades of injection allocation devices 12 through pipe 5-1 in the another one, and realize the 3rd layer of injection through the another one through hole 13-2 of three grades of packer 9 set inside.Said structure has been formed at least 3 passage separate injection tubing strings.
Oil pipe 5 comprises top connection 2-1; Top connection 2-1 upper end endoporus is provided with sealing ring 1-1, and top connection 2-1 lower end is connected with outer tube 4-1, is provided with connector 3-1 in the top connection 2-1; Connector 3-1 lower end screw thread is connected with manages 5-1 at least in two; Interior pipe 5-1 outer wall is interval with body resistance-strengthening tablets 6-1, and interior pipe 5-1 lower end screw thread is connected with down box cupling 8-1, and following box cupling 8-1 lower end screw thread is connected with connection-peg 10-1; Connection-peg 10-1 upper surface is provided with spacer 9-1, and following box cupling 8-1 and connection-peg 10-1 outer wall are with adapter sleeve 7-1.The multichannel oil pipe by many little steel pipes through be threaded with the oil pipe annular space form many independently, non-interfering branch annotates path, links to each other with many paths of ground installation, formed many independently notes gather passage.
Packer comprises central tube 1-2, and central tube 1-2 inner shaft is to being provided with 2 through hole 13-2 at least, through hole 13-2 and the interior corresponding cooperation of interior pipe 5-1 of oil pipe; Central tube 1-2 axially is provided with inclined to one side hole, is provided with well-flushing sliding sleeve 11-2 in the hole partially, and the central tube 1-2 wall that well-flushing sliding sleeve 11-2 is corresponding is provided with liquid pass hole; Well-flushing sliding sleeve 11-2 below is provided with well-flushing packed-piston 12-2, and the outer wall of central tube 1-2 is with packing element 2-2, spacer ring 3-2, is provided with the gap between the boss of packing element 2-2 and central tube 1-2; Packing element 2-2 below is provided with lower casing body 5-2, and lower casing body 5-2 lower end internal thread connects reducer union 8-2, and central tube 1-2 lower end external screw thread connects reducer union 8-2; The upper surface of reducer union 8-2 is provided with and sets piston 6-2; The central tube 1-2 wall corresponding with setting piston 6-2 is provided with via hole, sets piston 6-2 top and is the interior cover of lower casing body 5-2, and interior cover is fixed with jump ring 4-2 through cutting off pin; Be provided with sealing short circuit 7-2 in the reducer union 8-2; Sealing short circuit 7-2 upper end is tightly connected with central tube 1-2, and sealing short circuit 7-2 lower end is connected with short tube, and short tube communicates with through hole 13-2 is corresponding; The outer wall of short tube is with multitube short circuit 9-2, and multitube short circuit 9-2 bottom is connected with ready-packaged joint 10-2.A plurality of paths of multi-path packer set inside can be connected with the passage of multi-path oil pipe; Sealing is adopted at two ends, and short circuit is tightened; Has the anti-flushing well passage.
The injection allocation device comprises upper binding head 1-3; Upper binding head 1-3 has injection allocation device passage 9-3, and upper binding head 1-3 lower end is threaded io pipe 6-3 in few 2 injection allocation devices, and pipe 6-3 outer wall is provided with and connects short circuit 3-3 in the injection allocation device; Connecting short circuit 3-3 upper end is threaded with upper binding head 1-3; Connection short circuit 3-3 lower end is threaded and becomes joint 5-3, and upper binding head 1-3 bottom outer wall is with packed-piston 2-3, and the bottom of packed-piston 2-3 is connected with change joint 5-3 through shear pin 4-3; Become joint 5-3 lower thread and be connected with lower contact 8-3, lower contact 8-3 is with snap joint 7-3 outward.Multi-path injection allocation device is connected with the multi-path oil pipe, and the injection allocation duct is corresponding with the interval of design, accurately controls in the face of individual layer injects with being implemented in.
Claims (2)
1. polymer multichannel oil pipe separate injection tubing string; Comprise oil pipe (5); Oil pipe (5) lower end connects one-level packer (7), one-level injection allocation device (10), secondary packer (8), secondary injection allocation device (11), three grades of packers (9), three grades of injection allocation devices (12) successively; It is characterized in that: be provided with pipe (5-1) at least two in the described oil pipe (5); The central tube of described packer (1-2) inner shaft is to being provided with 2 through holes (13-2) at least; Through hole (13-2) and the interior corresponding cooperation of interior pipe (5-1) of oil pipe are provided with pipe (6-3) at least 2 injection allocation devices in the described injection allocation device, annotate the corresponding cooperation of through hole (13-2) of managing in the device in (6-3) and the central tube (1-2); Corresponding the communicating of packer passage (14-2) of circular passage and packer between outer tube of oil pipe (4-1) and the interior pipe (5-1), corresponding the communicating of injection allocation device passage (9-3) of the packer passage (14-2) of packer and injection allocation device; Well head is provided with one-level injection channel (1), secondary injection channel (2), three grades of injection channels (3); The circular passage communicates between the outer tube (4-1) of one-level injection channel (1) and oil pipe and the interior pipe (5-1); Secondary injection channel (2) communicates with dividing notes passages (4); Three grades of injection channels (3) communicate with dividing notes passages (6), and said structure has been formed at least 3 passage separate injection tubing strings.
2. polymer multichannel oil pipe separate injection tubing string according to claim 1; It is characterized in that: oil pipe (5) comprises top connection (2-1); Top connection (2-1) upper end endoporus is provided with sealing ring (1-1), and top connection (2-1) lower end is connected with outer tube (4-1), is provided with connector (3-1) in the top connection (2-1); Connector (3-1) lower end screw thread is connected with pipe (5-1) at least two; Interior pipe (5-1) outer wall is interval with body resistance-strengthening tablets (6-1), and interior pipe (5-1) lower end screw thread is connected with down box cupling (8-1), and following box cupling (8-1) lower end screw thread is connected with connection-peg (10-1); Connection-peg (10-1) upper surface is provided with spacer (9-1), and following box cupling (8-1) and connection-peg (10-1) outer wall are with adapter sleeve (7-1); Described packer comprises central tube (1-2), and central tube (1-2) inner shaft is to being provided with 2 through holes (13-2) at least, through hole (13-2) and the interior corresponding cooperation of interior pipe (5-1) of oil pipe; Central tube (1-2) axially is provided with inclined to one side hole, is provided with well-flushing sliding sleeve (11-2) in the hole partially, and central tube (1-2) wall that well-flushing sliding sleeve (11-2) is corresponding is provided with liquid pass hole; Well-flushing sliding sleeve (11-2) below is provided with well-flushing packed-piston (12-2), and the outer wall of central tube (1-2) is with packing element (2-2), spacer ring (3-2), is provided with the gap between the boss of packing element (2-2) and central tube (1-2); Packing element (2-2) below is provided with lower casing body (5-2), and lower casing body (5-2) lower end internal thread connects reducer union (8-2), and central tube (1-2) lower end external screw thread connects reducer union (8-2); The upper surface of reducer union (8-2) is provided with and sets piston (6-2); Central tube (1-2) wall corresponding with setting piston (6-2) is provided with via hole, sets piston (6-2) top and is the interior cover of lower casing body (5-2), and interior cover is fixed with jump ring (4-2) through cutting off pin; Be provided with sealing short circuit (7-2) in the reducer union (8-2); Sealing short circuit (7-2) upper end is tightly connected with central tube (1-2), and sealing short circuit (7-2) lower end is connected with short tube, short tube and corresponding the communicating of through hole (13-2); The outer wall of short tube is with multitube short circuit (9-2), and multitube short circuit (9-2) bottom is connected with ready-packaged joint (10-2); Described injection allocation device comprises upper binding head (1-3); Upper binding head (1-3) has injection allocation device passage (9-3), and upper binding head (1-3) lower end is threaded io pipe (6-3) in few 2 injection allocation devices, and pipe (6-3) outer wall is provided with and connects short circuit (3-3) in the injection allocation device; Connecting short circuit (3-3) upper end is threaded with upper binding head (1-3); Connection short circuit (3-3) lower end is threaded and becomes joint (5-3), and upper binding head (1-3) bottom outer wall is with packed-piston (2-3), and the bottom of packed-piston (2-3) is connected with change joint (5-3) through shear pin (4-3); Become joint (5-3) lower thread and be connected with lower contact (8-3), be with snap joint (7-3) outside the lower contact (8-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110256583.0A CN102337873B (en) | 2011-09-01 | 2011-09-01 | Multi-channel separate injection pipe column for oil pipe of polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110256583.0A CN102337873B (en) | 2011-09-01 | 2011-09-01 | Multi-channel separate injection pipe column for oil pipe of polymer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102337873A true CN102337873A (en) | 2012-02-01 |
| CN102337873B CN102337873B (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110256583.0A Expired - Fee Related CN102337873B (en) | 2011-09-01 | 2011-09-01 | Multi-channel separate injection pipe column for oil pipe of polymer |
Country Status (1)
| Country | Link |
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| CN (1) | CN102337873B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389563A (en) * | 2014-12-01 | 2015-03-04 | 中国石油天然气股份有限公司 | Two-layer separate injection process pipe column device for nonmetal continuous oil pipe |
| CN105201473A (en) * | 2015-10-22 | 2015-12-30 | 东北石油大学 | Multiple-oil-layer deep profile control injection device and oil layer deep profile control realizing method thereof |
| CN106545320A (en) * | 2016-11-04 | 2017-03-29 | 中国石油天然气股份有限公司 | Layered injection quantity and layered molecular weight separate injection process for chemical well separate injection well |
| CN110984953A (en) * | 2019-11-19 | 2020-04-10 | 东北石油大学 | Harmful gas treatment method in fracturing flow-back process |
| CN111441751A (en) * | 2020-04-15 | 2020-07-24 | 王皓 | Coiled tubing multilayer is annotated and is gathered integrative device of well-flushing |
| CN114575804A (en) * | 2022-02-09 | 2022-06-03 | 中海油能源发展股份有限公司 | Multi-layer pipe column capable of being used for underground layering, quality-based and partial-pressure injection |
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| DE3328080A1 (en) * | 1983-08-03 | 1985-02-21 | C. Deilmann AG, 4444 Bad Bentheim | Method of increasing the petroleum displacement of a reservoir by means of hot water |
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2011
- 2011-09-01 CN CN201110256583.0A patent/CN102337873B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3328080A1 (en) * | 1983-08-03 | 1985-02-21 | C. Deilmann AG, 4444 Bad Bentheim | Method of increasing the petroleum displacement of a reservoir by means of hot water |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389563A (en) * | 2014-12-01 | 2015-03-04 | 中国石油天然气股份有限公司 | Two-layer separate injection process pipe column device for nonmetal continuous oil pipe |
| CN105201473A (en) * | 2015-10-22 | 2015-12-30 | 东北石油大学 | Multiple-oil-layer deep profile control injection device and oil layer deep profile control realizing method thereof |
| CN106545320A (en) * | 2016-11-04 | 2017-03-29 | 中国石油天然气股份有限公司 | Layered injection quantity and layered molecular weight separate injection process for chemical well separate injection well |
| CN110984953A (en) * | 2019-11-19 | 2020-04-10 | 东北石油大学 | Harmful gas treatment method in fracturing flow-back process |
| CN110984953B (en) * | 2019-11-19 | 2022-03-29 | 东北石油大学 | Harmful gas treatment method in fracturing flow-back process |
| CN111441751A (en) * | 2020-04-15 | 2020-07-24 | 王皓 | Coiled tubing multilayer is annotated and is gathered integrative device of well-flushing |
| CN111441751B (en) * | 2020-04-15 | 2022-01-25 | 王皓 | Coiled tubing multilayer is annotated and is gathered integrative device of well-flushing |
| CN114575804A (en) * | 2022-02-09 | 2022-06-03 | 中海油能源发展股份有限公司 | Multi-layer pipe column capable of being used for underground layering, quality-based and partial-pressure injection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102337873B (en) | 2014-09-17 |
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