CN202731863U - Long-lasting layered water injection tubular column of directional well - Google Patents

Long-lasting layered water injection tubular column of directional well Download PDF

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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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China
Prior art keywords
packer
tubular column
bridge
righting
directional well
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220277670
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Chinese (zh)
Inventor
毕福伟
曾亚勤
郭方元
巨亚锋
李明
于九政
晏耿成
胡美艳
罗必林
申晓莉
王子建
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China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Priority to CN 201220277670 priority Critical patent/CN202731863U/en
Application granted granted Critical
Publication of CN202731863U publication Critical patent/CN202731863U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a long-lasting layered water injection tubular column of a directional well, and the tubular column is designed for meeting the setting requirements of different well deflection of the directional well, adding a righting function and improving the sealing effect of the tubular column. The tubular column is sequentially connected with a bottom plug, a screen pipe, a water injection circulating valve, a tertiary bridge-type eccentric water distributor, a secondary righting packer, a secondary bridge-type eccentric water distributor, a primary righting packer, a primary bridge-type eccentric water distributor and a packer; according to the long-lasting layered water injection tubular column of the directional well, the righting packer is adopted, the tubular column is supported after the packer is set, so that the tubular column is arranged in the center of a sleeve, the stress around a sealant tube is uniform, the sealing performance of the packer of the directional well can be improved, and the setting requirements of different well deflection of the directional well are met. Bridge-type channels are distributed around the main channel of the bridge-type eccentric water distributors, so that single-layer flow and pressure tests can be directly taken, water is normally injected into other layers through the bridge-type channels and the states of other layers are not changed, so that the inter-layer interference among all the layers is minimized, and the layered flow allocation efficiency and layered pressure testing efficiency can be effectively improved.

Description

The long-acting separate layer water injection string of directional well
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).
CN 201220277670 2012-06-13 2012-06-13 Long-lasting layered water injection tubular column of directional well Expired - Fee Related CN202731863U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220277670 CN202731863U (en) 2012-06-13 2012-06-13 Long-lasting layered water injection tubular column of directional well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220277670 CN202731863U (en) 2012-06-13 2012-06-13 Long-lasting layered water injection tubular column of directional well

Publications (1)

Publication Number Publication Date
CN202731863U true CN202731863U (en) 2013-02-13

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Cited By (8)

* Cited by examiner, † Cited by third party
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 multi-section continuous oil testing system without lifting 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 technical pipe column for 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 A kind of separate injection tubing string and application method for flushing
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

Cited By (12)

* Cited by examiner, † Cited by third party
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 multi-section continuous oil testing system without lifting 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 multi-section continuous oil testing system without lifting 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 technical pipe column for 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 A kind of separate injection tubing string and application method for flushing
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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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