CN202280447U - Control valve used for fracturing well completion and capable of being opened and closed - Google Patents
Control valve used for fracturing well completion and capable of being opened and closed Download PDFInfo
- Publication number
- CN202280447U CN202280447U CN 201120367362 CN201120367362U CN202280447U CN 202280447 U CN202280447 U CN 202280447U CN 201120367362 CN201120367362 CN 201120367362 CN 201120367362 U CN201120367362 U CN 201120367362U CN 202280447 U CN202280447 U CN 202280447U
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- fracturing
- sleeve
- outer sleeve
- well completion
- well
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Abstract
The utility model discloses a control valve used for fracturing well completion and capable of being opened and closed. The control valve is used in a casing staged fracturing well completion pipe string in a horizontal well or a straight well in the petroleum industry, is opened or closed through a special tool, and meets the requirements on casing staged fracturing well completion. The control valve comprises an outer sleeve and an inner sliding sleeve, wherein a liquid flow channel is formed on the outer sleeve; the inner sliding sleeve is mounted in the outer sleeve; and an upper joint and a lower joint are connected with two ends of the outer sleeve. A plurality of large-diameter control valves for fracturing well completion, which have uniform design specifications, are placed as required at the horizontal section of the horizontal well or a plurality of fracturing well completion intervals of the straight well; the control valves can be opened and closed through the same set of special tool; the number of fracturing stages is unlimited; and the requirements of large-discharge large-scale fracturing reformation are met. The fracturing construction of a plurality of fracturing stratums can be completed continuously, without needing to change the fracturing well completion pipe string, so that the fracturing efficiency is improved, and the fracturing cost is saved; and the well completion technology is simple.
Description
Technical field
The utility model belongs to the staged fracturing completion tool that petroleum industry is used; Particularly but the pressure break completion is with switching control pilot; Be used in the sleeve pipe staged fracturing completion tubular column of horizontal well or straight well, use special tool to open or close, satisfy the needs of sleeve pipe staged fracturing completion.
Background technology
At present, utilizing horizontal well in segments fracturing reform technology to improve unconventional development of resources application scale such as low-permeability oil deposit and shale oil gas progressively strengthens.But horizontal well open hole packer segmentation well-completing process commonly used at present; As: application number is 200920248979.9 the fracturing integrated tubing string of horizontal well completion, opens sliding sleeve staged fracturing technology step by step through pitching, for let the ball that drops into can through, arrive the pressure break well completion interval of below; The ball seat internal diameter of below must be less than the ball seat internal diameter of upper level; The influence that arranged by the classification of ball seat size, its number of fragments and pressure break scale all are very limited, and have influenced correctional effect; And this sliding sleeve is the pitching sliding sleeve, after the ball input sliding sleeve is opened, and the later stage can't close when producing again.In the time of will carrying out selectivity production or the transformation of refracturing repeatedly like the later stage; Need close sliding sleeve; This integrated pipe column integral body can't be used; Can only in this tubing string, be lowered to the oil pipe fracturing string again, carry out staged fracturing in the small-scale pipe, therefore in the later follow-up construction of completion, can not satisfy user demand.Operating trouble appears in the structure relative complex of the integrated flow string of this utility model easily simultaneously.In the exploitation of low-permeability oil deposit and unconventional petroleum resources; Straight well to the multistage pressure break; In the horizontal well casing pipe pressure break completion tubular column particularly complicated, that technical requirements is high, need a kind of instrument that can select arbitrarily to open or close to solve an above-mentioned difficult problem at tubular column structure.
Summary of the invention
But the purpose of the utility model provides the pressure break completion with switching control pilot; Solve in the construction of present staged fracturing completion, the staged fracturing technology of opening sliding sleeve step by step through pitching is arranged by radial sector in the ball seat influences the problem that number of fragments and pressure break scale are restricted; For providing a kind of, can open the casing fracturing completion tubular column; Simultaneously also in instrument to close, improve the correctional effect on stratum, improve pressure break scale and efficient.
The technical solution of the utility model is:
But the pressure break completion comprises outer sleeve 3 and inner sliding sleeve 7 with switching control pilot; Outer sleeve 3 is provided with fluid course 6; Inner sliding sleeve 7 is loaded in the outer sleeve 3, and outer sleeve 3 two ends connect top connection 1 and lower contact 9, but the requirement of this switching control pilot according to stratum staged fracturing completion is configured in the completion tubular column.
It is progressive with significantly to the utlity model has following useful effect:
1, at the horizontal segment of horizontal well or a plurality of pressure break well completion interval of straight well; But the switching control pilot that the pressure break completion that can place unified, the big latus rectum of a plurality of design specificationss is as required used; But can use same set of special tool to accomplish of the keying of a plurality of pressure break completions with switching control pilot; Pressure break divides number of stages unrestricted, the problem that must dwindle step by step of latus rectum in not existing, but can guarantee that each pressure break completion interval of well section all uses the switching control pilot of maximum inner diameter to implement the casing fracturing completion.Satisfy the needs of big discharge capacity, extensive fracturing reform, increase formation fracture length, crack quantity and flow conductivity, effectively improve production capacity and recovery ratio.
2, the unlatching on the inner sliding sleeve is with the hook shoulder with close with hook shoulder and special tool and be used; But can accomplish unlatching continuously, close the multistage fracturing completion with switching control pilot; Need not to change the pressure break completion tubular column; Improved pressure break efficient, it is simple, safe and reliable to practice thrift pressure break expense and well-completing process, greatly reduces construction cost.
3, the unlatching on the outer sleeve is with detent with close the effect that has open and close location with detent, but makes its open and close switching control pilot accurately;
4, the fluid course open and close of the utility model is flexible, need not perforation, saves perforating job expense and activity duration.
5, can use the manipulation tubing string that special tool is housed in the later stage production; But be lowered into and optionally open or close the switching control pilot that any pressure break completion is used in the pressure break completion tubular column; Satisfy the requirement that selectivity production and refracturing are transformed; Solved prior art pressure break completion tubular column can not be repeated open and close, can not selectivity production and the difficult problem of refracturing, have tangible economic benefit and social benefit.
Description of drawings
Accompanying drawing is the structural representation of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further explanation: referring to accompanying drawing: but the staged fracturing completion comprises outer sleeve 3 and inner sliding sleeve 7 with switching control pilot; Outer sleeve 3 is provided with fluid course 6; Inner sliding sleeve 7 is loaded in the outer sleeve 3, and outer sleeve 3 two ends connect top connection 1 and lower contact 9.The interior circle of the upper sleeve of inner sliding sleeve 7 is provided with to be opened with hook shoulder 4, and its top cylindrical shell is provided with positioning bar, and circle is provided with and closes with hook shoulder 8 in the cylindrical shell of its underpart.The outside of positioning bar is provided with positioning boss 10.Circle is provided with and opens with detent 2 and close with detent 11 in the cylindrical shell of fluid course 6 tops of sleeve 3 outside; Open with detent 2 and all cooperate the location with the positioning boss 10 of inner sliding sleeve 7 with closing with detent 11; When the hook draw-in groove that uses special tool opens or closes the utility model; Be about to draw on the inner sliding sleeve 7 of the utility model or under push away; It is opened or during liquid for plugging circulation road 6, and the positioning boss 10 of inner sliding sleeve 7 falls into to be opened with detent 2 or closes with detent 11, and the inner sliding sleeve 7 after opening or closing is located.The distance of top connection 1 to fluid course 6 upper port avoids the cylindrical shell of inner sliding sleeve 7 to block fluid course 6 more than or equal to the cylindrical shell length of inner sliding sleeve 7 in the outer sleeve 3 interior circles; The junction of the both sides of the fluid course 6 of sleeve 3, top connection 1 and lower contact 9 is equipped with seal outside, representes with seal 5 among the figure.
In the pressure break completion tubular column that has connected the pressure break completion tool with sleeve pipe, but the switching control pilot of the interval of staged fracturing configuration respective numbers in the corresponding well, but with the pressure break completion tubular column G.I.H that has disposed switching control pilot; Use coiled tubing to connect a cover special tool in its bottom, become the manipulation tubing string, be lowered in the pressure break completion tubular column; Tubing string is handled in hydraulic control, draws on the inner sliding sleeve 7 of hook draw-in groove with the utility model with special tool or pushes away down, and it is opened or liquid for plugging circulation road 6, and realization opens or closes the operation of the utility model, accomplishes the casing fracturing completion of this well section and constructs.Carry or transfer manipulation tubing string to new target zone on after the construction of this well section is accomplished and repeat above-mentioned operation continuation construction; Perhaps carry to ground, normally carry out follow-up construction handling tubing string.
Claims (5)
1. but the pressure break completion is with switching control pilot; It is characterized in that comprise outer sleeve (3) and inner sliding sleeve (7), outer sleeve (3) is provided with fluid course (6); Inner sliding sleeve (7) is loaded in the outer sleeve (3), and outer sleeve (3) two ends connect top connection (1) and lower contact (9).
2. but pressure break completion according to claim 1 is with switching control pilot; It is characterized in that; The interior circle of the upper sleeve of inner sliding sleeve (7) is provided with to be opened with hook shoulder (4), and its top cylindrical shell is provided with positioning bar, and circle is provided with and closes with hook shoulder (8) in the cylindrical shell of its underpart.
3. but pressure break completion according to claim 2 is characterized in that with switching control pilot the outside of said positioning bar is provided with positioning boss (10).
4. but pressure break completion according to claim 1 is with switching control pilot; It is characterized in that; Circle is provided with and opens with detent (2) and close with detent (11) in the cylindrical shell of the fluid course (6) of sleeve (3) top outside, and unlatching is with detent (2) and close with detent (11) and all cooperate with the positioning boss (10) of inner sliding sleeve (7).
5. but pressure break completion according to claim 4 is characterized in that with switching control pilot the distance of top connection (1) to fluid course (6) upper port is more than or equal to the cylindrical shell length of inner sliding sleeve (7) in the interior circle of outer sleeve (3); The junction of the both sides of the fluid course (6) of sleeve (3), top connection (1) and lower contact (9) is equipped with seal outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120367362 CN202280447U (en) | 2011-09-30 | 2011-09-30 | Control valve used for fracturing well completion and capable of being opened and closed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120367362 CN202280447U (en) | 2011-09-30 | 2011-09-30 | Control valve used for fracturing well completion and capable of being opened and closed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280447U true CN202280447U (en) | 2012-06-20 |
Family
ID=46226620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120367362 Expired - Fee Related CN202280447U (en) | 2011-09-30 | 2011-09-30 | Control valve used for fracturing well completion and capable of being opened and closed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202280447U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373900A (en) * | 2011-09-30 | 2012-03-14 | 中国石油化工股份有限公司 | Staged fracturing well completion method using hydraulic-controlled switch to open/close controllable valves |
| CN104727796A (en) * | 2015-03-02 | 2015-06-24 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Construction method of horizontal well core-withdrawable sliding sleeve multistage fracturing completion pipe string |
| CN107366520A (en) * | 2016-05-12 | 2017-11-21 | 中石化石油工程技术服务有限公司 | A kind of robot switching sliding sleeve |
| CN114482958A (en) * | 2020-10-26 | 2022-05-13 | 中国石油化工股份有限公司 | Casing cementing full-bore infinite staged fracturing well completion device and fracturing well completion method thereof |
-
2011
- 2011-09-30 CN CN 201120367362 patent/CN202280447U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373900A (en) * | 2011-09-30 | 2012-03-14 | 中国石油化工股份有限公司 | Staged fracturing well completion method using hydraulic-controlled switch to open/close controllable valves |
| CN104727796A (en) * | 2015-03-02 | 2015-06-24 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Construction method of horizontal well core-withdrawable sliding sleeve multistage fracturing completion pipe string |
| CN104727796B (en) * | 2015-03-02 | 2017-08-29 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | A kind of horizontal well can coring sliding sleeve multistage fracturing completion tubular column construction method |
| CN107366520A (en) * | 2016-05-12 | 2017-11-21 | 中石化石油工程技术服务有限公司 | A kind of robot switching sliding sleeve |
| CN114482958A (en) * | 2020-10-26 | 2022-05-13 | 中国石油化工股份有限公司 | Casing cementing full-bore infinite staged fracturing well completion device and fracturing well completion method thereof |
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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: 20120620 Termination date: 20150930 |
|
| EXPY | Termination of patent right or utility model |