CN202731863U - Long-acting separate-layer water injection string for directional well - Google Patents
Long-acting separate-layer water injection string for directional well Download PDFInfo
- Publication number
- CN202731863U CN202731863U CN 201220277670 CN201220277670U CN202731863U CN 202731863 U CN202731863 U CN 202731863U CN 201220277670 CN201220277670 CN 201220277670 CN 201220277670 U CN201220277670 U CN 201220277670U CN 202731863 U CN202731863 U CN 202731863U
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- Prior art keywords
- packer
- bridge type
- water injection
- oil pipe
- directional well
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- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 title claims abstract description 50
- 239000007924 injection Substances 0.000 title claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000010410 layer Substances 0.000 abstract description 24
- 238000012360 testing method Methods 0.000 abstract description 13
- 238000007789 sealing Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012856 packing Methods 0.000 abstract description 5
- 239000011229 interlayer Substances 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000009530 blood pressure measurement Methods 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 239000002356 single layer Substances 0.000 abstract 1
- 238000011010 flushing procedure Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a long-term layering water injection tubular column of directional well is the seat that is satisfied different well inclinations of directional well and seals the requirement, increases the function of rightting and improves the sealed effect of tubular column and designs, and this tubular column connects gradually bottom blocking, screen pipe, water injection circulating valve, tertiary bridge type eccentric water injection mandrel, second grade centralization packer, second grade bridge type eccentric water injection mandrel, one-level centralization packer, one-level bridge type eccentric water injection mandrel and cover protection packer from bottom to top and forms, the utility model discloses a centralization packer, it supports the tubular column after the packer sits, makes the tubular column be in the sleeve pipe center, and sealed packing element evenly atress all around can improve the sealing performance of directional well packer, satisfies the seat that is different well inclinations of directional well and seals the requirement. The bridge type channels are distributed around the main channel of the bridge type eccentric water distributor, single-layer flow and pressure tests can be directly carried out, other layer sections are normally injected through the bridge type channels, the state of the other layer sections is not changed, interlayer interference among the layer sections is reduced to the maximum extent, and the layered flow distribution efficiency and the layered pressure measurement efficiency can be effectively improved.
Description
Technical field
The utility model relates to the long-acting separate layer water injection string of a kind of directional well, belongs to water injection well in oil fields down-hole dispensing technical field.
Background technology
At present, along with going deep into of oil field development, oil-water well adopts the directional well exploitation more.The conventional packer that present water injection string adopts does not have the righting function in directional well, owing to be subjected under directional well hole deviation and the gravitational effect effect, one side of tubing string deflection sleeve pipe, packing element unbalance stress when causing packer setting, the packing element shoulder stress is concentrated, and sealing performance descends, and the water filling layer is communicated with up and down, affect the dispensing effect, shorten the application life of separate injection tubing string.The directional well hole deviation is more and more come greatly now, and existing slant hole packer can not satisfy the sealing function of high angle hole.
Summary of the invention
The purpose of this utility model is to provide a kind of directional well long-acting separate layer water injection string, it mainly adopts righting type packer and bridge type eccentric injection mandrel, increase the righting function, make tubing string be in the cover tube hub, improve the tubing string sealing effectiveness, satisfy the requirement that sets of the different hole deviations of directional well, have the anti-flushing well function, adopt bridge type eccentric injection mandrel can directly carry out individual layer flow and pressure test.
Concrete technical scheme of the present utility model is as follows:
Block end at the bottom of the long-acting separate layer water injection string of directional well and connect screen casing by oil pipe, the screen casing upper end connects the fill cycle valve by oil pipe, fill cycle valve upper end connects three grades of bridge type eccentric injection mandrels by oil pipe, three grades of bridge type eccentric injection mandrel upper ends connect secondary righting type packer by oil pipe, secondary righting type packer upper end connects the secondary bridge type eccentric injection mandrel by oil pipe, secondary bridge type eccentric injection mandrel upper end connects one-level righting type packer by oil pipe, one-level righting type packer upper end connects the one-level bridge type eccentric injection mandrel by oil pipe, packer is protected by the oil pipe adapter sleeve in the upper end of one-level bridge type eccentric injection mandrel, and cover is protected packer upper end connected pipes.
The utility model adopts the righting type packer, and it makes tubing string be in the cover tube hub at packer setting rear support tubing string, and cartridge is uniform stressed all around, can improve the sealing performance of directional well packer, satisfies the requirement that sets of the different hole deviations of directional well.The righting type packer has auto-lock function, can prevent from the packer setting Problem of Failure that causes because of string creep that the factors such as temperature and pressure effect, water injection pressure fluctuation cause from guaranteeing that packer sealing is reliable.This water injection string adds hydraulic pressure from sleeve pipe, and liquid is walked around the packing element that sets of packer step by step by the anti-flushing well device on the packer, enters oil pipe by screen casing, realizes the anti-flushing well function of tubing string.Be furnished with passageway bridge around the main channel of bridge type eccentric injection mandrel, can directly carry out individual layer flow and pressure test, other interval normally injects by passageway bridge, do not change its state, reduced to greatest extent the interlayer interference between each layer, can Effective Raise zonal flow rate allotment efficient and delaminating pressure testing efficient.
Description of drawings
Accompanying drawing is the long-acting separate layer water injection string structural representation of directional well.
The specific embodiment
With reference to accompanying drawing embodiment of the present utility model is further specified:
Embodiment:
Stifled 10 upper ends connect screen casing 9 by oil pipe 1 at the bottom of the long-acting separate layer water injection string of directional well, screen casing 9 upper ends connect fill cycle valve 8 by oil pipe 1, fill cycle valve 8 upper ends connect three grades of bridge type eccentric injection mandrels 7 by oil pipe 1, three grades of bridge type eccentric injection mandrel 7 upper ends connect secondary righting type packer 6 by oil pipe 1, secondary righting type packer 6 upper ends connect secondary bridge type eccentric injection mandrel 5 by oil pipe 1, secondary bridge type eccentric injection mandrel 5 upper ends connect one-level righting type packer 4 by oil pipe 1, one-level righting type packer 4 upper ends connect one-level bridge type eccentric injection mandrel 3 by oil pipe 1, packer 2 is protected by oil pipe 1 adapter sleeve in the upper end of one-level bridge type eccentric injection mandrel 3, and cover is protected packer 2 upper end connected pipes 1.
Cover is protected the position of packer 2 more than top water filling layer, and the position of righting type packer 4 is between top water filling layer and middle part water filling layer, and the position of righting type packer 6 is between middle part water filling layer and bottom water filling layer.
Specific implementation process of the present utility model:
1. through wash well: lower logical Flushing tubular column, drifting are used the active water well-flushing to the artificial bottom of a well.
2. be lowered to separate injection tubing string: connect the long-acting separate layer water injection string of directional well according to technical scheme, according to arriving the precalculated position under the designing requirement.
3. packer setting and realize the righting function: by pressurizeing in the oil pipe, the righting type packer starts seating and sealing unit, the compression seal packing element, packer setting and self-locking start erection device simultaneously, are supported on the casing wall, make tubing string be in the cover tube hub, uniform stressed around the cartridge, the sealing performance of raising directional well packer realizes the layering sealing purpose.
4. testing seal about packer: behind the packer setting, open the water nozzle water filling of injection well downhole flow regulator, test the envelope operation after water filling is normal, be lowered to the seal-checking instrument device to eccentric injection mandrel, admission tubing and casing pressure data takes out the seal-checking instrument device, and reclaim and to test the seal pressure data, change normal water filling over to after testing the involution lattice.
5. flow rate test and adjusting: after water filling is normal, carry out the flow debugging, regulate the water nozzle size of bridge type eccentric injection mandrel, so that water injection rate satisfies the geology injection allocation requirement of each layer, realize seperated layer water injection.
6: individual layer flow rate test and downhole closing pressure fall-off test: during normal water filling, be furnished with passageway bridge around the main channel of the bridge type eccentric injection mandrel that tubing string adopts, be lowered to measuring apparatus, can directly carry out individual layer flow and pressure test, other interval is by the normal water filling of passageway bridge, reduce to greatest extent the interlayer interference between each layer, Effective Raise zonal flow rate and delaminating pressure testing efficient and precision.
7 well workovers inspection string: because development requires, in the time of need to tripping out tubing string, the well head pressure release, the upper lifting pipe post, the righting type removing seal for packer plays flowline and underground water-injection instrument by root.
Claims (1)
1. long-acting separate layer water injection string of directional well is characterized in that:
Stifled (10) upper end connects screen casing (9) by oil pipe (1) at the bottom of this water injection string, screen casing (9) upper end connects fill cycle valve (8) by oil pipe (1), fill cycle valve (8) upper end connects three grades of bridge type eccentric injection mandrels (7) by oil pipe (1), three grades of bridge type eccentric injection mandrels (7) upper end connects secondary righting type packer (6) by oil pipe (1), secondary righting type packer (6) upper end connects secondary bridge type eccentric injection mandrel (5) by oil pipe (1), secondary bridge type eccentric injection mandrel (5) upper end connects one-level righting type packer (4) by oil pipe (1), one-level righting type packer (4) upper end connects one-level bridge type eccentric injection mandrel (3) by oil pipe (1), packer (2) is protected by oil pipe (1) adapter sleeve in the upper end of one-level bridge type eccentric injection mandrel (3), and cover is protected packer (2) upper end connected pipes (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220277670 CN202731863U (en) | 2012-06-13 | 2012-06-13 | Long-acting separate-layer water injection string for directional well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220277670 CN202731863U (en) | 2012-06-13 | 2012-06-13 | Long-acting separate-layer water injection string for directional well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202731863U true CN202731863U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220277670 Expired - Fee Related CN202731863U (en) | 2012-06-13 | 2012-06-13 | Long-acting separate-layer water injection string for directional well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202731863U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114843A (en) * | 2013-02-18 | 2013-05-22 | 中国石油天然气股份有限公司 | Multi-layer section continuous oil testing system without tripping tubular column and operation method thereof |
| CN104563984A (en) * | 2013-10-29 | 2015-04-29 | 中国石油天然气股份有限公司 | Thick-layer multi-section separate-layer water injection process pipe column of water injection well |
| CN105672965B (en) * | 2016-04-14 | 2018-04-06 | 荆州市翔龙石油科技有限公司 | A kind of bridge-type separate layer water injection string and its operating procedure |
| CN108374653A (en) * | 2018-02-01 | 2018-08-07 | 中国石油大学(华东) | A kind of multi-functional water injection string and pressure testing method and pressure measurement short |
| CN109252834A (en) * | 2017-07-13 | 2019-01-22 | 中国石油化工股份有限公司 | The concentric long-acting layered water filler of binary channels and method |
| CN109322646A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | Separate injection string for oil well water injection and use method |
| CN109681161A (en) * | 2018-04-03 | 2019-04-26 | 中国石油化工股份有限公司 | Multilayer system separate mass and separate pressure water-filling method and water injection string |
| CN112360431A (en) * | 2020-11-11 | 2021-02-12 | 中石化石油工程技术服务有限公司 | Oil and gas well multilayer testing device and testing method |
-
2012
- 2012-06-13 CN CN 201220277670 patent/CN202731863U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114843A (en) * | 2013-02-18 | 2013-05-22 | 中国石油天然气股份有限公司 | Multi-layer section continuous oil testing system without tripping tubular column and operation method thereof |
| CN103114843B (en) * | 2013-02-18 | 2015-07-08 | 中国石油天然气股份有限公司 | Multi-layer section continuous oil testing system without tripping tubular column and operation method thereof |
| CN104563984A (en) * | 2013-10-29 | 2015-04-29 | 中国石油天然气股份有限公司 | Thick-layer multi-section separate-layer water injection process pipe column of water injection well |
| CN105672965B (en) * | 2016-04-14 | 2018-04-06 | 荆州市翔龙石油科技有限公司 | A kind of bridge-type separate layer water injection string and its operating procedure |
| CN109252834A (en) * | 2017-07-13 | 2019-01-22 | 中国石油化工股份有限公司 | The concentric long-acting layered water filler of binary channels and method |
| CN109252834B (en) * | 2017-07-13 | 2024-05-24 | 中国石油化工股份有限公司 | Concentric double-channel long-acting layered water injection device and method |
| CN109322646A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | Separate injection string for oil well water injection and use method |
| CN109322646B (en) * | 2017-07-31 | 2023-10-31 | 中国石油天然气股份有限公司 | Separate injection pipe column for oil well water injection and use method |
| CN108374653A (en) * | 2018-02-01 | 2018-08-07 | 中国石油大学(华东) | A kind of multi-functional water injection string and pressure testing method and pressure measurement short |
| CN108374653B (en) * | 2018-02-01 | 2020-09-18 | 中国石油大学(华东) | Multifunctional water injection pipe column, pressure measuring method and pressure measuring nipple |
| CN109681161A (en) * | 2018-04-03 | 2019-04-26 | 中国石油化工股份有限公司 | Multilayer system separate mass and separate pressure water-filling method and water injection string |
| CN112360431A (en) * | 2020-11-11 | 2021-02-12 | 中石化石油工程技术服务有限公司 | Oil and gas well multilayer testing device and testing method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20210613 |