CN203879448U - Casing protected gas injection packer for CO2 injection well - Google Patents
Casing protected gas injection packer for CO2 injection well Download PDFInfo
- Publication number
- CN203879448U CN203879448U CN201420333029.7U CN201420333029U CN203879448U CN 203879448 U CN203879448 U CN 203879448U CN 201420333029 U CN201420333029 U CN 201420333029U CN 203879448 U CN203879448 U CN 203879448U
- Authority
- CN
- China
- Prior art keywords
- slips
- wiper block
- packer
- hydraulic anchor
- gas injection
- Prior art date
- 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 - Lifetime
Links
- 238000002347 injection Methods 0.000 title claims abstract description 28
- 239000007924 injection Substances 0.000 title claims abstract description 28
- 238000012856 packing Methods 0.000 claims description 24
- 230000007704 transition Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- 229920000459 Nitrile rubber Polymers 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 230000009471 action Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 241000935974 Paralichthys dentatus Species 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a casing protected gas injection packer for a CO2 injection well. The casing protected gas injection packer comprises a guide sleeve, a wiper block, slips, a center pipe, a cone, a rubber barrel, a center coupling and a hydraulic anchor; the upper end of the guide sleeve is connected with the lower end of the wiper block, and while the upper end of the wiper block is connected with the lower end of the slips; the guide sleeve, the wiper block and the slips sleeve the center pipe; the cone sleeves the center pipe at the upper part of the slips; the upper end of the cone is connected with the lower end of the rubber barrel that sleeves the center pipe; the upper end of the rubber barrel is connected with the lower end of the hydraulic anchor through the center coupling; an upper joint is connected to the upper end of the hydraulic anchor; a lower joint is connected to the lower end of the center pipe; the lower joint and the upper joint are connected with an oil pipe. The casing protected gas injection packer of the CO2 injection well is simple and reasonable in structure, low in cost, reliable to anchor, high in rubber barrel sealing performance, meets the requirement on alternative injection of CO2 and water, and is applicable to a CO2 oil driven injection wall.
Description
Technical field
The utility model relates to a kind of packer, particularly a kind of note CO
2casing protection gas injection packer for well.
Background technology
At present, CO
2the displacement of reservoir oil is the effective technology means that improve LOW PERMEABILITY RESERVOIR recovery ratio, and at home and abroad all there is application in oil field.Due to CO
2meet after water and can cause heavy corrosion to carbon steel, therefore except injection string itself need to consider anticorrosion, also need production casing effectively to protect.CO
2the casing protection method that displacement of reservoir oil Injection Well is conventional is to be lowered to packer more than producing zone position, after setting, can seal oil casing annular space, thereby plays the protective effect to sleeve pipe.Note CO
2the packer that well is conventional has fluid pressure type and machinery rotating type.Hydraulic packer is many and insert the supporting application of sealed injection string, enters well tool more, complicated construction technique, and expense is higher; Machinery rotating type packer application is comparatively extensive, but in field conduct process, packer is prone to the situations such as packing element is poorly sealed, anchor mechanism is unreliable; cause packer short effective time, the protection of impact to sleeve pipe causes operation in a short time simultaneously; increase cost, and at present at CO
2replace in Injection Well and cannot apply with water.
Summary of the invention
The purpose of this utility model is to adopt CO in order to solve
2the displacement of reservoir oil is carried out the high and insecure problem of behavior in service of the packer cost that uses in oil extraction process and the one note CO that provides
2casing protection gas injection packer for well.
A kind of note CO described in the utility model
2well includes fairlead with casing protection gas injection packer, wiper block, slips, central tube, cone, packing element, transition joint and hydraulic anchor, wherein the upper end of fairlead and the lower end of wiper block are connected, the upper end of wiper block is connected with the lower end of slips, fairlead, wiper block and slip sleeve are connected on central tube, cone is set on the central tube on slips top, the upper end of cone is connected with the lower end of packing element, packing element is set on central tube, the upper end of packing element is connected with the lower end of hydraulic anchor by transition joint, the upper end of hydraulic anchor is connected with top connection, the lower end of central tube is connected with lower contact, lower contact is connected with oil pipe with top connection.
Bolt between the lower end of hydraulic anchor and transition joint, bolt between the upper end of hydraulic anchor and top connection.
Bolt between the lower end of central tube and lower contact, the upper end of central tube and transition joint bolt.
The material of packing element is hydrogenated nitrile-butadiene rubber.
The material of hydraulic anchor and slips is 20CrMnTi.
Operating principle of the present utility model is as described below:
Lower contact and top connection and oil pipe bolt, in oil pipe Injection Well, more than its position is positioned at implanted layer position.After packer puts in place; upper lifting pipe post makes track pin in lower contact in fairlead top dead-centre; forward tubing string makes pin glide along fairlead track; then transfer tubing string; now slips, wiper block, fairlead keep static under the frictional force effect of wiper block and sleeve pipe, and central tube is descending, and promotion cone struts slips packer is stuck on casing wall; top tubing string weight compression packer packing element makes its external diameter become large sealing oil sets annular space, thereby plays the effect of protection annular space.Hydraulic anchor anchor fluke protruding clamping internal surface of sleeve pipe under hydraulic action when gas injection or water filling, realizes grappling action, prevents string creep.
Above-mentioned fairlead, wiper block, slips, cone, packing element and hydraulic anchor is the assembling of existing equipment, and therefore, concrete model and specification further do not repeat.
The beneficial effects of the utility model:
Compared with the packer of the utility model and current use, aspect three, improve the needs that alternately inject to meet air water.The one, improve fairlead design, facilitate track pin motion, more easily realize thereby make to set the action with deblocking.The 2nd, improving slips angle is 30 °, 60 ° combinations, makes slips reasonable stress, and pintle hook lock is more firm.The 3rd, packing element adopts hydrogenated nitrile-butadiene rubber, compared with the conventional acrylonitrile-butadiene rubber in oil field, has good tightness, water resistance, temperature tolerance and resistance to pressure; Packer body adopts 42CrMo material, and hydraulic anchor and slips adopt 20CrMnTi material, meet corrosion-resistant technical requirements.
The utility model is simple and reasonable, with low cost, and grappling is reliable, and packing element good airproof performance can meet CO
2needs with water alternately injects, are adapted at CO
2in the Injection Well of the displacement of reservoir oil, apply.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
1, fairlead 2, wiper block 3, slips 4, central tube 5, cone
6, packing element 7, hydraulic anchor 8, transition joint 9, top connection 10, lower contact.
Detailed description of the invention
Refer to shown in Fig. 1:
A kind of note CO described in the utility model
2well includes fairlead 1 with casing protection gas injection packer, wiper block 2, slips 3, central tube 4, cone 5, packing element 6 and hydraulic anchor 7, wherein the upper end of fairlead 1 is connected with the lower end of wiper block 2, the upper end of wiper block 2 is connected with the lower end of slips 3, fairlead 1, wiper block 2 and slips 3 are socketed on central tube 4, cone 5 is set on the central tube 4 on slips 3 tops, the upper end of cone 5 is connected with the lower end of packing element 6, packing element 6 is set on central tube 4, the upper end of packing element 6 is connected with transition joint 8, transition joint 8 is connected with the lower end of hydraulic anchor 7, the upper end of hydraulic anchor 7 is connected with top connection 9, the upper end of central tube 4 is connected with transition joint 8, lower end is connected with lower contact 10, lower contact 10 is connected with oil pipe with top connection 9.
Bolt between the lower end of hydraulic anchor 7 and transition joint 8, bolt between the upper end of hydraulic anchor 7 and top connection 9.
Bolt between the lower end of central tube 4 and lower contact 10.
The material of packing element 6 is hydrogenated nitrile-butadiene rubber.
The material of hydraulic anchor 7 and slips 3 is 20CrMnTi.
Operating principle of the present utility model is as described below:
Lower contact 10 and top connection 9 and oil pipe bolt, in oil pipe Injection Well, more than its position is positioned at implanted layer position.After packer puts in place; upper lifting pipe post makes track pin in lower contact 10 in fairlead 1 top dead-centre; forward tubing string makes pin glide along fairlead 1 track; then transfer tubing string; now slips 3, wiper block 2, fairlead 1 keep static under the frictional force effect of wiper block 2 and sleeve pipe; and central tube 4 is descending; promotion cone 5 struts slips 3 packer is stuck on casing wall; top tubing string weight compression packer packing element 6 makes its external diameter become large sealing oil sets annular space, thereby plays the effect of protection annular space.The anchor fluke of hydraulic anchor 7 protruding clamping internal surface of sleeve pipe under hydraulic action when gas injection or water filling, realizes grappling action, prevents string creep.
Above-mentioned fairlead 1, wiper block 2, slips 3, cone 5, packing element 6 and hydraulic anchor 7 is the assembling of existing equipment, and therefore, concrete model and specification further do not repeat.
Claims (5)
1. a note CO
2casing protection gas injection packer for well, it is characterized in that: include fairlead, wiper block, slips, central tube, cone, packing element, transition joint and hydraulic anchor, wherein the upper end of fairlead and the lower end of wiper block are connected, the upper end of wiper block is connected with the lower end of slips, fairlead, wiper block and slip sleeve are connected on central tube, cone is set on the central tube on slips top, the upper end of cone is connected with the lower end of packing element, packing element is set on central tube, the upper end of packing element is connected with the lower end of hydraulic anchor by transition joint, the upper end of hydraulic anchor is connected with top connection, the lower end of central tube is connected with lower contact, lower contact is connected with oil pipe with top connection.
2. a kind of note CO according to claim 1
2casing protection gas injection packer for well, is characterized in that: bolt between the lower end of described hydraulic anchor and transition joint, bolt between the upper end of hydraulic anchor and top connection.
3. a kind of note CO according to claim 1
2casing protection gas injection packer for well, is characterized in that: described fairlead, wiper block, slips, cone, packing element are all set on central tube, bolt between the lower end of central tube and lower contact.
4. a kind of note CO according to claim 1
2casing protection gas injection packer for well, is characterized in that: the material of described packing element is hydrogenated nitrile-butadiene rubber.
5. a kind of note CO according to claim 1
2casing protection gas injection packer for well, is characterized in that: described hydraulic anchor and the material of slips are 20CrMnTi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420333029.7U CN203879448U (en) | 2014-06-20 | 2014-06-20 | Casing protected gas injection packer for CO2 injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420333029.7U CN203879448U (en) | 2014-06-20 | 2014-06-20 | Casing protected gas injection packer for CO2 injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879448U true CN203879448U (en) | 2014-10-15 |
Family
ID=51679959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420333029.7U Expired - Lifetime CN203879448U (en) | 2014-06-20 | 2014-06-20 | Casing protected gas injection packer for CO2 injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879448U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246134A (en) * | 2016-08-30 | 2016-12-21 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of High Temperature High Pressure retrievable formation testing packer |
| CN109826588A (en) * | 2019-03-27 | 2019-05-31 | 孙绍武 | A kind of simple reparation formula water injection well packer |
-
2014
- 2014-06-20 CN CN201420333029.7U patent/CN203879448U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246134A (en) * | 2016-08-30 | 2016-12-21 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of High Temperature High Pressure retrievable formation testing packer |
| CN109826588A (en) * | 2019-03-27 | 2019-05-31 | 孙绍武 | A kind of simple reparation formula water injection well packer |
| CN109826588B (en) * | 2019-03-27 | 2020-02-14 | 山东华冠能源技术有限公司 | Simple repairing type water injection well packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141015 |