CN101818638B - Fracturing and separate zone production combined operation device and method - Google Patents
Fracturing and separate zone production combined operation device and method Download PDFInfo
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- CN101818638B CN101818638B CN 201010155703 CN201010155703A CN101818638B CN 101818638 B CN101818638 B CN 101818638B CN 201010155703 CN201010155703 CN 201010155703 CN 201010155703 A CN201010155703 A CN 201010155703A CN 101818638 B CN101818638 B CN 101818638B
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Abstract
The invention belongs to the technical field of petroleum and natural gas downhole operation and particularly relates to a fracturing and separate zone production combined operation device and a fracturing and separate zone production combined operation method. The device comprises a lower packer and an upper packer. The device is characterized in that: a Y221 anchor packer is used as the lower packer, a K344 packer is used as the upper packer, the upper end of the Y221 anchor packer is provided with a throttling sand blower, the Y221 anchor packer and the throttling sand blower are in threaded connection with the lower end of an adjusting pipe nipple, the lower side of the anchor packer is connected with a tail pipe which is connected with a pipe plug; and the upper end of the K344 packer is provided with a hydraulic anchor, the K344 packer and the hydraulic anchor are in threaded connection with the upper end of the adjusting pipe nipple, and a packed oil sleeve cavity is formed between the K344 packer and the Y211 anchor packer. The device and the method can reduce the construction processes of operation such as round trip, line slipping and swabbing preparation, shorten the construction period, reduce the construction cost and reduce the labor intensity of workers.
Description
Technical field
The invention belongs to operation technique field, petroleum gas down-hole, particularly a kind of pressure break separate zone production combined operation device and method.
Background technology
In operation technique field, petroleum gas down-hole, exploration well, evaluation well, usually, do not beat when trying lamination beyond the Great Wall and splitting formation testing, the general employing " two envelopes choosings are pressed " (block wait to press layer with two K344 packers) technique, long celebrating Oilfield using K344 inflatable packer, utilize throttling in the pressure-guiding sand blower to chew the inside and outside difference set packer of the formed pipe string of throttling during pressing crack construction, after finishing construction, the release pressure packer is deblocking, if target zone is asked product, must trip out fracture drill changes and minute asks drilling tool to finish, need to remove twice like this drilling tool, long construction period, labor strength is large.
Summary of the invention
The purpose of this invention is to provide a kind of the minimizing and make a trip, fall the job execution operations such as rope, pumping preparation, shorten construction period, reducing construction cost alleviates labor strength, can creep into capable pressure break for one time, press after the row of closing, divide a kind of pressure break separate zone production combined operation device and the method for asking target zone.
The object of the present invention is achieved like this, design a kind of pressure break separate zone production combined operation device, comprise: lower packet, upper packer, it is characterized in that: the Y221 anchor packer is done lower packet, do upper packer with the K344 packer, Y221 anchor packer upper end has throttling sandblaster, Y221 anchor packer and throttling sandblaster to be threaded in adjustment pipe nipple lower end, connect tail pipe under the Y221 anchor packer, tail pipe connects plug; There is hydraulic anchor the upper end of K344 packer, and K344 packer and hydraulic anchor are threaded in the upper end of adjusting pipe nipple, is packing oil jacket annular space between K344 packer and Y221 anchor packer.
Described throttling sandblaster comprises two public straight mouthpieces and bypass pipe, is used for throttling and drain, and during pressure break, the straight mouthpiece of two public affairs mainly plays throttling action, and the pressure reduction that throttling produces makes the K344 packer setting; Bypass pipe plays guide functions, makes fracturing liquid enter the stratum by oil pipe through guiding gutter.
Based on a kind of method of pressure break separate zone production combined operation device, its method is:
1) before the pressure break, set the Y221 anchor packer, Y221 anchor packer slips anchor is on sleeve pipe, and then the weight by drilling tool self presses off Y221 anchor packer rubber and set, come packing to try oil jacket annular space between interval and the fractured interval with this, with plug shutoff pipe string; Y221 anchor packer and plug acting in conjunction will try interval and fractured interval is separated;
2) during pressure break, the differential pressure action of chewing throttling by the throttling of throttling sandblaster struts K344 packer 5 rubber of upper end and set, play packing on it the oil jacket annular space and sleeve pipe played a protective role;
3) after the pressure break, continue to realize that with Y221 anchor packer and plug packing oil jacket annular space and pipe string upper examination target zone is carried out pumping asks product, plays the sand setting effect in the tail pipe pumping process.
Described Y221 packer belongs to compression packer, adopt rotation to set, before lower brill, the Y221 packer falls groove to lower brill state, under be drilled into design attitude after, on carry 1 meter, dextrorotation 2/3 circle, alignment pin in lower contact this moment skids off from the J type groove of traction body, the release central tube is descending, to at first close and seal bypass valve, continue to transfer tubing string, it is descending to promote packing element and cone, because the rubbing action of the wiper block on the traction body, in transferring process, slips on the traction body and cone produce and relatively move, cone will strut slips, slips on the Y221 anchor packer firmly is anchored on the outer wall of oil pipe, continue to apply seating sealing load, the packing element of Y221 anchor packer swells by compression, when load increases to 60-80KN, the Y221 anchor packer enters low pressure and sets state, continuation increases to 120KN with load and enters high pressure and set state, after this directly the upper lifting pipe post will at first be opened downforce on the bypass valve balance of Y221 anchor packer, and carrying the Y221 anchor packer in the continuation will deblocking, and the Y221 anchor packer is in lower brill state automatically behind the upper lifting pipe post, continue this moment to pull out of hole or directly transfer under the tubing string continuation and bore, the restting action gets final product when need to set.
Effect of the present invention is:
1, can shorten construction period, in time pumping discharge opeing has reduced the secondary injury of fracturing fluid to the stratum, shortens at least construction period one day, for the formation testing speed-raising is performed meritorious deeds never to be obliterated;
2, this technique is compared with common testing, removes less twice to bore, and has alleviated labor strength;
3, make the lower seal device of fracture drill of the compression anchor packer, after the pressure break or complete examination afterwards as long as on carry drilling tool and get final product deblocking, do not have the K344 packer because pressure reduction and the risk of deblocking bit freezing not, thereby safer, reduced accident risk;
4, this technology can be brought higher economic benefit to enterprise, reduce construction period one day, reduce by 2000 yuan of cost of labor expenses, use less 1 K344 packer, fall 1231 yuan of costs, remove less to divide twice and ask drilling tool, reduce by 9517 yuan of costs, few pumping once (take 3 classes of pumping as), 10177 yuan of cost reductions, more than every, save altogether 22925 yuan of costs;
5, use this technology and finish altogether 36 mouthfuls of well 45 laminations and split formation testing work, success rate reaches 100%.
Description of drawings
Below in conjunction with the embodiment accompanying drawing this is described further with bright:
Fig. 1 is the example structure schematic diagram.
Among the figure: 1, plug; 2, tail pipe; 3, Y221 anchor packer; 4, throttling sandblaster; 5, K344 packer; 6, hydraulic anchor; 7, packing element; 8, oil pipe; 9, oil jacket annular space; 10, fractured interval; 11, tried interval; 12, adjust pipe nipple.
The specific embodiment
As shown in Figure 1, a kind of pressure break separate zone production combined operation device, comprise: lower packet, upper packer, Y221 anchor packer 3 is done lower packet, do upper packer with K344 packer 5, there is throttling sandblaster 4 Y221 anchor packer 3 upper ends, Y221 anchor packer 3 is threaded in throttling sandblaster 4 and adjusts pipe nipple 12 lower ends, connect tail pipe 2 under the Y221 anchor packer 3, tail pipe 2 connects plug 1, there is hydraulic anchor 6 upper end of K344 packer 5, and K344 packer 5 and hydraulic anchor 6 are threaded in the upper end of adjusting pipe nipple 12, is packing oil jacket annular space 9 between K344 packer 5 and Y221 anchor packer 3.Before the method for pressure break separate zone production combined operation device comprises pressure break, during pressure break and after the pressure break, step is: 1) before the pressure break, set Y221 anchor packer 3, Y221 anchor packer 3 slips anchors are on sleeve pipe, then the weight by drilling tool self presses off Y221 anchor packer 3 rubber and set, come packing to try oil jacket annular space 9 between interval 11 and the fractured interval 10 with this, with plug 1 shutoff pipe string; Y221 anchor packer 3 and plug 1 acting in conjunction will try interval 11 and fractured interval 10 is separated; 2) during pressure break, the differential pressure action of chewing throttling by 4 throttlings of throttling sandblaster struts K344 packer 5 rubber of upper end and set, play packing on it oil jacket annular space 9 and sleeve pipe played a protective role; 3) after the pressure break, continue to realize that with Y221 anchor packer 3 and plug 1 packing oil jacket annular space 9 and pipe string upper examination target zone is carried out pumping asks product, plays the sand setting effect in the tail pipe 2 pumping processes.
Should press technological operation during the pressure break separate zone production combined operation:
1. anchor packer 3 before the pressure break, sets compression Y221 anchor packer 3 as the lower packet of two envelope choosing pressures; During pressure break, with its packing oil jacket annular space 9; With plug 1 shutoff pipe string, thereby reach packing target zone and the purpose of trying layer.
2.Y221 the upper packing 5 of anchor packer 3 and K344 is when pressure break, packing oil jacket annular space 9, with target zone with tried layer and separated, compression Y221 anchor packer 3 slips anchors are on sleeve pipe, then by the weight of drilling tool self packer rubber is pressed off and play the packing effect, it namely set before pressure break, and K344 upper packer 5 presses off rubber by the differential pressure action that throttling is chewed in throttling when pressure break.
3. throttling sandblaster 4 critical pieces comprise two public straight mouthpieces and bypass pipe, and its Main Function is throttling and drain.During pressure break, the straight mouthpiece of two public affairs mainly plays throttling action, and the pressure reduction that throttling produces sets the upper packing 5 of K344; Bypass pipe plays guide functions, makes fracturing liquid enter the stratum by oil pipe 8 through guiding gutter.
4. after pressing, continue to reach upper examination target zone is carried out the purpose that product is asked in pumping with compression Y221 anchor packer 3 and plug 1 packing oil jacket annular space and pipe string.Play the sand setting effect in the tail pipe 2 pumping processes.
The Y221 packer belongs to compression packer, adopts rotation to set.Before lower brill, must fall groove to it to lower brill state, under be drilled into design attitude after, on carry 1 meter, dextrorotation 2/3 circle, the alignment pin in lower contact this moment skids off from the J type groove of traction body, the release central tube is descending, to at first close and seal bypass valve, and continue to transfer tubing string, it is descending to promote packing element and cone, because the rubbing action of the wiper block on the traction body, in transferring process, the slips on the traction body and cone produce and relatively move, and cone will strut slips, make the slips on the packer firmly be anchored on the casing wall, continue to apply seating sealing load, packing element 7 swells by compression, when load increases to 60-80KN, packer will reliably set, can reach the purpose of minute asking packing this moment fully, but will realize packing under the fracturing process mesohigh condition, load must be increased to more than the 120KN.After finishing construction, directly the upper lifting pipe post will at first be opened downforce on the bypass valve balance of packer, and continuing upper lifting pipe post packer will deblocking.Packer is in lower brill state automatically behind the upper lifting pipe post, can continue this moment to pull out of hole, and also can directly transfer tubing string and continue lower boring, and the restting action gets final product when need to set.This packer can need to set repeatedly according to design.
Claims (1)
1. pressure break separate zone production combined operation device, comprise: lower packet, upper packer, it is characterized in that: Y221 anchor packer (3) is done lower packet, do upper packer with K344 packer (5), there is throttling sandblaster (4) Y221 anchor packer (3) upper end, Y221 anchor packer (3) is threaded in throttling sandblaster (4) and adjusts pipe nipple (12) lower end, connects tail pipe (2) under the Y221 anchor packer (3), and tail pipe (2) connects plug (1); There is hydraulic anchor (6) upper end of K344 packer (5), and K344 packer (5) and hydraulic anchor (6) are threaded in the upper end of adjusting pipe nipple (12), is packing oil jacket annular space (9) between K344 packer (5) and Y221 anchor packer (3); Described throttling sandblaster (4) comprises two public straight mouthpieces and bypass pipe, is used for throttling and drain, and during pressure break, the straight mouthpiece of two public affairs mainly plays throttling action, and the pressure reduction that throttling produces sets K344 packer (5); Bypass pipe plays guide functions, makes fracturing liquid enter the stratum by oil pipe through guiding gutter; Described Y221 anchor packer (3) belongs to compression packer, adopt rotation to set, before lower brill, Y221 anchor packer (3) falls groove to lower brill state, under be drilled into design attitude after, on carry 1 meter, dextrorotation 2/3 circle, alignment pin in lower contact this moment skids off from the J type groove of traction body, the release central tube is descending, to at first close and seal bypass valve, continue to transfer tubing string, it is descending to promote packing element and cone, because the rubbing action of the wiper block on the traction body, in transferring process, slips on the traction body and cone produce and relatively move, cone will strut slips, slips on the Y221 anchor packer (3) firmly is anchored on the outer wall of oil pipe (8), continue to apply seating sealing load, the packing element of Y221 anchor packer (3) swells by compression, when load increases to 60-80KN, Y221 anchor packer (3) enters low pressure and sets state, continuation increases to 120KN with load and enters high pressure and set state, after this directly the upper lifting pipe post will at first be opened downforce on the bypass valve balance of Y221 anchor packer (3), and carrying Y221 anchor packer (3) in the continuation will deblocking, and Y221 anchor packer (3) is in lower brill state automatically behind the upper lifting pipe post, continue this moment to pull out of hole or directly transfer under the tubing string continuation and bore, the restting action gets final product when need to set; Its method step is:
1) before the pressure break, set Y221 anchor packer (3), Y221 anchor packer (3) slips anchor is on sleeve pipe, then the weight by drilling tool self presses off Y221 anchor packer (3) rubber and set, come packing to try oil jacket annular space (9) between interval (11) and the fractured interval (10) with this, with plug (1) shutoff pipe string; Y221 anchor packer (3) and plug (1) acting in conjunction will try interval (11) and fractured interval (10) is separated;
2) during pressure break, the differential pressure action of chewing throttling by throttling sandblaster (4) throttling struts K344 packer (5) rubber of upper end and set, play packing on it oil jacket annular space (9) and sleeve pipe played a protective role; With target zone with tried layer and separated, compression Y221 anchor packer (3) slips anchor is on sleeve pipe, then by the weight of drilling tool self packer rubber is pressed off and play the packing effect, it namely set before pressure break, and K344 packer (5) presses off rubber by the differential pressure action that throttling is chewed in throttling when pressure break;
3) after the pressure break, continue to realize that with Y221 anchor packer (3) and plug (1) packing oil jacket annular space (9) and pipe string upper examination target zone is carried out pumping asks product, plays the sand setting effect in tail pipe (2) the pumping process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010155703 CN101818638B (en) | 2010-04-26 | 2010-04-26 | Fracturing and separate zone production combined operation device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010155703 CN101818638B (en) | 2010-04-26 | 2010-04-26 | Fracturing and separate zone production combined operation device and method |
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| Publication Number | Publication Date |
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| CN101818638A CN101818638A (en) | 2010-09-01 |
| CN101818638B true CN101818638B (en) | 2013-05-29 |
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| CN 201010155703 Expired - Fee Related CN101818638B (en) | 2010-04-26 | 2010-04-26 | Fracturing and separate zone production combined operation device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106285610B (en) * | 2015-05-11 | 2018-08-17 | 中国石油化工股份有限公司 | Fracturing string |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4685519A (en) * | 1985-05-02 | 1987-08-11 | Mobil Oil Corporation | Hydraulic fracturing and gravel packing method employing special sand control technique |
| US6446727B1 (en) * | 1998-11-12 | 2002-09-10 | Sclumberger Technology Corporation | Process for hydraulically fracturing oil and gas wells |
| CN201144682Y (en) * | 2008-01-16 | 2008-11-05 | 中国石油化工股份有限公司西南油气分公司工程技术研究院 | Multiple fracturing pipe column for petroleum and gas well |
| CN201412134Y (en) * | 2009-06-02 | 2010-02-24 | 中国石油天然气股份有限公司 | Small-casing pipe string for multilayer fracturing |
| CN201412133Y (en) * | 2009-06-02 | 2010-02-24 | 中国石油天然气股份有限公司 | Pipe string for multi-stage drag fracturing of horizontal well |
-
2010
- 2010-04-26 CN CN 201010155703 patent/CN101818638B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4685519A (en) * | 1985-05-02 | 1987-08-11 | Mobil Oil Corporation | Hydraulic fracturing and gravel packing method employing special sand control technique |
| US6446727B1 (en) * | 1998-11-12 | 2002-09-10 | Sclumberger Technology Corporation | Process for hydraulically fracturing oil and gas wells |
| CN201144682Y (en) * | 2008-01-16 | 2008-11-05 | 中国石油化工股份有限公司西南油气分公司工程技术研究院 | Multiple fracturing pipe column for petroleum and gas well |
| CN201412134Y (en) * | 2009-06-02 | 2010-02-24 | 中国石油天然气股份有限公司 | Small-casing pipe string for multilayer fracturing |
| CN201412133Y (en) * | 2009-06-02 | 2010-02-24 | 中国石油天然气股份有限公司 | Pipe string for multi-stage drag fracturing of horizontal well |
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| CN101818638A (en) | 2010-09-01 |
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