CN202832439U - Oil filed in-layer subdivision water injection technology tubular column - Google Patents
Oil filed in-layer subdivision water injection technology tubular column Download PDFInfo
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- CN202832439U CN202832439U CN 201220420605 CN201220420605U CN202832439U CN 202832439 U CN202832439 U CN 202832439U CN 201220420605 CN201220420605 CN 201220420605 CN 201220420605 U CN201220420605 U CN 201220420605U CN 202832439 U CN202832439 U CN 202832439U
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- packer
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- oil pipe
- water injection
- subdivision
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Abstract
The utility model discloses an oil filed in-layer subdivision water injection technology tubular column which is designed for meeting requirements of an oil filed in-layer subdivision water injection and solving the problem of casting and salvaging errors of an in-layer multilevel subdivision water injection blanking plug. The tubular column is sequentially connected with a casing pipe protective packer, a one-level forward direction water injector, a one-level K344 packer, a reverse direction water injector, a two-level K344 packer, a two-level forward direction water injector, a preset working barrel, a double-acting valve, a screen pipe and a pipe plug through oil pipes from up to bottom. When a multilevel separated layer water injection is conducted through the tubular column, a K344 long rubber sleeve packer is adopted, a sealing surface of the rubber sleeve is large, long-term and effectively set on small interlayer with the thickness smaller than 2m can be achieved, high pressure bearing capacity can be ensured, and deblocking is easy. Due to interphase match and arrangement of the forward direction water injectors and the reverse direction water injector, interference between two water injectors does not occur when testing of casting and salvaging is conducted, effectiveness and an accuracy rate of the in-layer subdivision water injection can be ensured, and therefore the technical problem of the casting and the salvaging errors of the in-layer multilevel subdivision water injection blanking plug is solved, and requirements of oil filed subdivision separated layer water injection technology are met.
Description
Technical field
The utility model relates to subdivision injection process pipe string in the layer of a kind of oil field, belongs to the oil-field flooding technical field.
Background technology
In recent years, domestic each elephant is done a lot of work aspect subdivision injection, has obtained first-stage success.At present, layered water injection process pipe column mainly adopts Y341 packer and Y344 packer, and injection well downhole flow regulator is take eccentric injection mandrel and bridge type eccentric injection mandrel as main.Along with going deep into of oil field development, in order further to enlarge the reservoir water swept volume, improve the water drive development degree, meticulous seperated layer water injection work is by the interlayer dispensing future development of subdivision injection in the layer progressively.Oil reservoir for subdivision injection in the layer, each substratum spacer interlayers is thinner in the layer, when adopting Y341 packer and Y344 packer, deblocking power is large, and operating risk is high, and the packing element area that packer effectively sets is less, consider the impact of the factors such as string creep and deviations, packing element may be run into perforated interval, and the problem that packer can not accurate and effectively set occurs easily, finally causes the failure of stratified injection water technology.Simultaneously, during the interior multistage water injection of layer, distance is restricted between the adjacent two-stage injection well downhole flow regulator, the device pulling mistake that can result in blockage when carrying out dropping-fishing test, success rate and the efficient of impact test allotment.
Summary of the invention
The purpose of this utility model is to provide subdivision injection process pipe string in the layer of a kind of oil field, and the technological requirement that it can satisfy subdivision injection in the layer of oil field can solve again the technical barriers such as layer interior multistage water injection blanking plug pulling mistake.
Concrete technical scheme of the present utility model is as follows:
This oil pipe upper end, tubing string top connects well head; lower end splicing sleeve protecting packer; the casing protective packer lower end connects one-level forward injection well downhole flow regulator by oil pipe; one-level forward injection well downhole flow regulator lower end connects one-level K344 packer by oil pipe; one-level K344 packer lower end connects reverse injection well downhole flow regulator by oil pipe; oppositely the injection well downhole flow regulator lower end connects secondary K344 packer by oil pipe; secondary K344 packer lower end connects secondary forward injection well downhole flow regulator by oil pipe; secondary forward injection well downhole flow regulator lower end connects by oil pipe presets seating nipple; preset the seating nipple lower end and connect the double acting valve by oil pipe; double acting valve lower end connects screen casing by oil pipe, and the screen casing lower end connects plug by oil pipe.
The subdivision injection process pipe string adopts the K344 long packing element packer in the layer when carrying out the multilevel hierarchy water filling, and the packing element sealing surface is larger, can realize permanently effective setting to thickness less than the little interlayer of 2m, can guarantee again high pressure-bearing and easy deblocking.Interference-free between two injection well downhole flow regulators when the alternate configuration of forward and reverse injection well downhole flow regulator can make the test pulling, guarantee the validity of subdivision injection in the layer and the accuracy rate of test pulling, thereby solve the technical barrier of multistage water injection blanking plug pulling mistake in the layer, satisfy the needs of oil field fine separated layer water injection process.
Description of drawings
Fig. 1 is subdivision injection process pipe string structural representation in the layer of oil field.
The specific embodiment
With reference to Fig. 1 embodiment of the present utility model is further specified:
Embodiment:
This oil pipe 1 upper end, tubing string top connects well head; lower end screw joint casing protecting packer 2; casing protective packer 2 lower ends are by the oil pipe 1 one-level forward injection well downhole flow regulator 3 that is threaded; one-level forward injection well downhole flow regulator 3 lower ends are by the oil pipe 1 one-level K344 packer 4 that is threaded; one-level K344 packer 4 lower ends are by the oil pipe 1 reverse injection well downhole flow regulator 5 that is threaded; oppositely injection well downhole flow regulator 5 lower ends are by the oil pipe 1 secondary K344 packer 6 that is threaded; secondary K344 packer 6 lower ends are by the oil pipe 1 secondary forward injection well downhole flow regulator 7 that is threaded; secondary forward injection well downhole flow regulator 7 lower ends are threaded by oil pipe 1 and preset seating nipple 8; preset seating nipple 8 lower ends by the oil pipe 1 double acting valve 9 that is threaded; double acting valve 9 lower ends are by oil pipe 1 screen casing 10 that is threaded, and screen casing 10 lower ends are by oil pipe 1 plug 11 that is threaded.
The course of work of subdivision injection process pipe string is as follows in the layer of oil field:
Be lowered to process pipe string: adopt the jack rabbit drifting; use the active water well-flushing; then from bottom to top with plug 11, screen casing 10, double acting valve 9, preset seating nipple 8, secondary forward injection well downhole flow regulator 7, secondary K 344 packers 6, oppositely injection well downhole flow regulator 5, one-level K344 packer 4, one-level forward injection well downhole flow regulator 3, casing protective packer 2 and oil pipe 1 adopt successively and are threaded, the dead mouthpiece of all packing into before the injection well downhole flow regulator connection.Then, with under the process pipe string that connects to the precalculated position, adopt magnetic orientation that the packer location is calibrated.
Tubing string sets: apply hydraulic pressure in oil pipe 1, make the packing element of casing protective packer 2 and K344 packers at different levels be promoted and expand outwardly to set.After packer setting was finished, each water filling layer position was opened by effective packing, can carry out seperated layer water injection.During water filling, pull each layer blanking plug out, the mouthpiece of checkmating drops in the injection well downhole flow regulator after changing the required water nozzle of injection allocation scheme into.Injected water flows into the stratum from oil pipe 1 through each layer injection well downhole flow regulator.
Tubing string deblocking and well-flushing: the oil jacket annular space is beaten hydraulic pressure, and when oil jacket pressure reduction reached removing seal for packer pressure, packing element release of pressure resilience deblocking can carry out clean-out service under the deblocking state.
Dropping-fishing test: when the forward injection well downhole flow regulator is carried out the dropping-fishing test operation, adopt supporting forward throw in catcher; When reverse injection well downhole flow regulator is carried out the dropping-fishing test operation, adopt supporting reverse throw in catcher, mistake occurs to avoid little each layer of spacing dropping-fishing test.
Claims (1)
1. subdivision injection process pipe string in the oil field layer is characterized in that:
This tubing string top oil pipe (1) upper end connects well head; lower end splicing sleeve protecting packer (2); casing protective packer (2) lower end connects one-level forward injection well downhole flow regulator (3) by oil pipe (1); one-level forward injection well downhole flow regulator (3) lower end connects one-level K344 packer (4) by oil pipe (1); one-level K344 packer (4) lower end connects reverse injection well downhole flow regulator (5) by oil pipe (1); oppositely injection well downhole flow regulator (5) lower end connects secondary K344 packer (6) by oil pipe (1); secondary K344 packer (6) lower end connects secondary forward injection well downhole flow regulator (7) by oil pipe (1); secondary forward injection well downhole flow regulator (7) lower end connects by oil pipe (1) presets seating nipple (8); preset seating nipple (8) lower end and connect double acting valve (9) by oil pipe (1); double acting valve (9) lower end connects screen casing (10) by oil pipe (1), and screen casing (10) lower end connects plug (11) by oil pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220420605 CN202832439U (en) | 2012-08-23 | 2012-08-23 | Oil filed in-layer subdivision water injection technology tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220420605 CN202832439U (en) | 2012-08-23 | 2012-08-23 | Oil filed in-layer subdivision water injection technology tubular column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832439U true CN202832439U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220420605 Expired - Fee Related CN202832439U (en) | 2012-08-23 | 2012-08-23 | Oil filed in-layer subdivision water injection technology tubular column |
Country Status (1)
| Country | Link |
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| CN (1) | CN202832439U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420836A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Water finding tubular column of horizontal well section seat sealing wellhead flow method and water finding method thereof |
| CN104653157A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Multistage separated-layer water injection pipe column and working method thereof |
| CN106150459A (en) * | 2016-08-24 | 2016-11-23 | 江汉油田科瑞德石油工程技术（武汉）有限公司 | A kind of seperated layer water injection system |
| CN107882540A (en) * | 2016-09-29 | 2018-04-06 | 中国石油化工股份有限公司 | Card envelope layered water filler in layer |
| CN110307434A (en) * | 2018-03-27 | 2019-10-08 | 中国石油化工股份有限公司 | Tubing string shock absorber and oil field pulse water flooding system |
-
2012
- 2012-08-23 CN CN 201220420605 patent/CN202832439U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420836A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Water finding tubular column of horizontal well section seat sealing wellhead flow method and water finding method thereof |
| CN104420836B (en) * | 2013-08-30 | 2017-09-01 | 中国石油天然气股份有限公司 | Horizontal well in segments setting type well head discharge method searching pipe column and its groundwater prospecting method |
| CN104653157A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Multistage separated-layer water injection pipe column and working method thereof |
| CN104653157B (en) * | 2013-11-19 | 2018-03-09 | 中国石油天然气股份有限公司 | Multilevel hierarchy water injection string and its method of work |
| CN106150459A (en) * | 2016-08-24 | 2016-11-23 | 江汉油田科瑞德石油工程技术（武汉）有限公司 | A kind of seperated layer water injection system |
| CN106150459B (en) * | 2016-08-24 | 2018-09-11 | 江汉油田科瑞德油气工程（武汉）有限公司 | A kind of seperated layer water injection system |
| CN107882540A (en) * | 2016-09-29 | 2018-04-06 | 中国石油化工股份有限公司 | Card envelope layered water filler in layer |
| CN110307434A (en) * | 2018-03-27 | 2019-10-08 | 中国石油化工股份有限公司 | Tubing string shock absorber and oil field pulse water flooding system |
| CN110307434B (en) * | 2018-03-27 | 2021-05-25 | 中国石油化工股份有限公司 | Tubular column shock absorber and oil field pulse water injection system |
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Legal Events
| 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 |
Granted publication date: 20130327 Termination date: 20210823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |