CN103089229A - Acid fracturing pipe column ball seat capable of fishing and being used repeatedly - Google Patents
Acid fracturing pipe column ball seat capable of fishing and being used repeatedly Download PDFInfo
- Publication number
- CN103089229A CN103089229A CN2012105356827A CN201210535682A CN103089229A CN 103089229 A CN103089229 A CN 103089229A CN 2012105356827 A CN2012105356827 A CN 2012105356827A CN 201210535682 A CN201210535682 A CN 201210535682A CN 103089229 A CN103089229 A CN 103089229A
- Authority
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- China
- Prior art keywords
- ball seat
- ball
- acid fracturing
- falling prevention
- basket
- Prior art date
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- Granted
Links
- 239000002253 acid Substances 0.000 title claims abstract description 34
- 230000002265 prevention Effects 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 244000309464 bull Species 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000003801 milling Methods 0.000 description 9
- 238000005553 drilling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention discloses an acid fracturing pipe column ball seat capable of fishing and being used repeatedly. The acid fracturing pipe column ball seat is characterized in that an inward opening window fishing cylinder is connected to the bottom of a ball seat body of an acid fracturing pipe tail; a ball falling prevention ball seat is connected to the interior of the ball seat body of the acid fracturing pipe tail through a pin; the ball falling prevention ball seat and a ball seat outer cylinder fishing head are hooked by a shoulder and connected through the pin; the ball seat outer cylinder fishing head and a ball seat basket (a centralizing cylinder) are connected through an oil pipe coupling; by an elastic centralizer, the whole ball seat which is hit to fall off can be basically positioned in the center of a borehole for fishing; and by a bull nose ( a guiding shoe), the conditions that the elastic centralizer slips off through the outer wall of the ball seat basket (the centralizing cylinder), and after the pin of the ball falling prevention ball seat and the ball seat outer cylinder fishing head is cut off, the ball falling prevention ball seat and the ball seat outer cylinder fishing head fall into a downhole through the ball seat basket (the centralizing cylinder) and become falling substances can be avoided. When an acid fracturing pipe column is tripped, the ball seat and other accessories which are hit to fall to the downhole before acid fracturing can be fished directly at one time; and the acid fracturing pipe column ball seat can be used repeatedly and is safe and reliable.
Description
Technical field
In the acid fracturing construction and whole produce hydrocarbons process of the acid fracturing when the present invention relates to have oil/gas show to carry out pilot production in oil drilling creeps into or formation testing, gas.If can not form commercial hydrocarbon flow after acid fracturing, continue to deepen to creep into or oil recovery, gas process in need carry out other measure operation the time, can directly salvage the front fallen ball seat of acid fracturing and ball before lift pipe string, safety is crept into, bottom hole falling article is cleaned out in the modification measures operation for the lower step continues, and reusable.
Background technology
Have in the oil drilling drilling process in the acid fracturing construction of carrying out acid fracturing or formation testing, gas in the pilot production process after oil/gas show, after packer set, the ball seat of oil pipe string afterbody and ball are shot down before acid fracturing and make it directly drop down onto the shaft bottom to form gas channel, and satisfy that in the produce hydrocarbons process, various measure operations and tester go out to manage the needs that tail is tested at Open-Hole Section.
If such well with regard to this completion produce, the cementing plug sidetracking or trip out the acid fracturing tubing string after when no longer carrying out other measure operation on follow-up work without any impact.Continue to deepen to creep into or produce when again deepening to creep into after a period of time because totally can not continuing to creep in the shaft bottom at this point if problem is such well, can continue to creep into after the junk at the bottom of can only first clear well, for continuing to deepen to creep into to cause many difficulties and complexity.At present also there is no once to salvage the suitable fishing tool of ball seat and ball, can only carry out milling with milling tool.Time mill is unclean with an efficient milling shoes milling for one secondary ball seat and ball, in order to make the shaft bottom cleaning, ensures creeping into safely and fast of next step, will carry out milling by lower second efficient milling shoes at least, and this had both delayed a large amount of drilling times, had delayed again the oil-gas exploration progress.
Summary of the invention
Be difficult for the problem of salvaging for above-mentioned ball and ball seat, purpose of the present invention aimed to provide a kind of can the clean acid fracturing of direct disposable salvaging before tripping out the acid fracturing tubing string before fallen ball seat and ball.This can disposable salvaging ball seat principle be design originally without the ball seat of suitable fishing tool for the salvageable ball seat of suitable fishing tool is arranged.Solved the problem that to carry out milling because not salvaging bottom hole falling article.
The objective of the invention is to complete like this:
Can salvage and reuse acid fracturing tubing string ball seat and mainly formed by ball seat body, steel ball, O type circle, seat shear pin, ball falling prevention ball seat, ball seat urceolus fishing head, shear pin, box cupling, ball seat basket [righting cylinder], the end stifled [guide shoe], elastic centralizer, inwardopening window dipper.The inwardopening window dipper is connected on the body of acid fracturing tubing string pipe tail ball seat, the ball falling prevention ball seat is connected in the ball seat body with shear pin, and seal with O type circle, tangling with shoulder between ball falling prevention ball seat and ball seat urceolus fishing head and connect with the pin pin can not free-extension, retractable between them after pin is cut off, connect with box cupling between ball seat urceolus fishing head and ball seat basket [righting cylinder], the righting of ball seat basket [righting cylinder] external application elastic centralizer, the end stifled [guide shoe] that passage arranged with screwed connection to ball seat basket [righting cylinder] bottom.Have uniform hole on ball seat basket [righting cylinder], the end stifled [guide shoe], can satisfy the needs that advance slurry, acid fracturing and circulation in the acid fracturing tubing string.
The beneficial effect of advantage of the present invention and generation is:
1, the present invention is simple in structure, adopt conventional part assembling, be easy to processing, the inwardopening window dipper directly and the oil pipe thread of acid fracturing pipe tail ball seat body be connected to the pipe tail, the ball falling prevention ball seat can accept and guarantee that fallen ball does not drop down onto the shaft bottom and forms bottom hole falling article, be connected with tubing coupling between ball seat urceolus fishing head and ball seat basket [righting cylinder], elastic centralizer is enclosed within on ball seat basket [righting cylinder], because the centralizer that stops of box cupling does not affect window cutting dipper to the salvaging of ball seat urceolus fishing head.Elastic centralizer guarantees that ball seat urceolus fishing head is placed in the middle in well, is convenient to realize salvaging.The end stifled [guide shoe], can stop that fallen ball seat and ball and elastic centralizer do not drop down onto the shaft bottom and form bottom hole falling article.Installing/dismounting is simple, also can re-assembly after salvaging, reuse, and safe and reliable.
2, after field trial success of the present invention, when applying, every mouthful of well is not only saved at least and is made a trip twice and time (well of nearly seven kms can be economized out the time more than 4 days at least) of twice milling, ball seat and ball, two efficient milling shoes, also can guarantee to continue safety and creep into.Every mouthful of well is cost-saved nearly more than 700,000 yuan, greatly reduces post workman's labour intensity simultaneously, accelerates the oil-gas exploration progress.
Description of drawings
Fig. 1 is sectional view of the present invention.
The specific embodiment
As shown in Figure 1, a kind of salvaging reused acid fracturing tubing string ball seat and mainly is comprised of stifled [guide shoe] 10 of ball seat body 1, steel ball 2, O type circle 3, seat shear pin 4, ball falling prevention ball seat 5, ball seat urceolus fishing head 6, shear pin 7, box cupling 8, ball seat basket [righting cylinder] 9, the end, elastic centralizer 11, inwardopening window dipper 12.
The oil pipe thread of acid fracturing pipe tail ball seat body connects one can not tangle ball falling prevention ball seat 5, can salvage again the inwardopening window dipper 12 of this ball seat urceolus fishing head 6, ball falling prevention ball seat 5 can guarantee that fallen steel ball 2 is in all the time and not drop down onto the shaft bottom in ball seat and become junk, tangle and use shear pin 7 to connect with shoulder between ball falling prevention ball seat 5, ball seat urceolus fishing head 6, can bear certain shearing force, the salvaging in advance that can avoid so lower acid fracturing tubing string slightly to have ball falling prevention ball seat when being hampered 5 and ball seat urceolus fishing head 6 closures to cause.Ball falling prevention ball seat 5 shoots down front salvaging size and the consistent shoulder that can not hang of diameter of window salvaged less than window cutting dipper 12 because of its diameter, and the inwardopening window dipper 12 that is not connected in advance the pipe tail so whole devices that the ball falling prevention ball seat connects below 5 can drop down onto the shaft bottom smoothly tangles to cause in advance to be salvaged.Stifled [guide shoe] 10 in the end can stop that ball falling prevention ball seat 5, elastic centralizer 11 drop out ball seat basket [righting cylinder] and drop down onto shaft bottom formation junk.Ball seat urceolus fishing head 6 by elastic centralizer 11 rightings, has guaranteed that fallen ball seat is placed in the middle in well because of ball seat basket [righting cylinder] 9, is easy to enter inwardopening window dipper 12 under the guiding of ball falling prevention ball seat 5.play well killing fluid in the front good well of circular treatment of acid fracturing tubing string, calculate and salvage the well depth size, progressively transfer tubing string and (can suitably rotate tubing string when having to be hampered when showing, , there is tooth at the cylinder end), when telescopic ball falling prevention ball seat 5 enters inwardopening window dipper 12 and touches the ball seat body 1 of pipe tail because of shoot down front fit dimension closely reason be difficult for entering and manage in tail ball seat body 1, pipe tail ball seat body 1 can apply the weight of acid fracturing pipe string for ball falling prevention ball seat 5 tops like this, pin 7 between ball falling prevention ball seat 5 and ball seat urceolus fishing head 6 is cut off, ball falling prevention ball seat 5 is pressed in ball seat urceolus fishing head 6 and ball seat basket [righting cylinder] 9, stifled [guide shoe] 10 in the end that is connected under ball seat basket [righting cylinder] 9 can prevent that ball falling prevention ball seat 5 from falling to the shaft bottom by the endoporus of ball seat basket [righting cylinder] 9, elastic centralizer 11 falls to the shaft bottom to become junk by the outer wall of ball seat basket [righting cylinder] 9.If ball falling prevention ball seat 5 can enter in pipe tail ball seat 1 smoothly, touch the salvaging position of the inwardopening window dipper 12 that is connected in advance pipe tail ball seat body 1 when ball seat urceolus fishing head 6, form to fall to support on the shoulder of the salvaging window cover goal seat urceolus fishing head 6 of inwardopening window dipper 12, just can realize disposable fallen ball seat and the ball salvaged, dispose bottom hole falling article.
Claims (1)
1. can salvage and reuse acid fracturing tubing string ball seat and mainly formed by ball seat body (1), steel ball (2), O type circle (3), seat shear pin (4), ball falling prevention ball seat (5), ball seat urceolus fishing head (6), shear pin (7), box cupling (8), ball seat basket [righting cylinder] (9), the end stifled [guide shoe] (10), elastic centralizer (11), inwardopening window dipper (12) for one kind.
it is characterized in that inwardopening window dipper (12) is connected on the oil pipe thread of acid fracturing pipe tail ball seat body bottom, ball falling prevention ball seat (5) is connected in the ball seat body (1) of acid fracturing pipe tail with pin (4), O type circle (3) is realized the sealing between ball falling prevention ball seat (5) and ball seat body (1), tangle and use pin (7) to connect with shoulder between ball falling prevention ball seat (5) and ball seat urceolus fishing head (6), ball seat urceolus fishing head (6) is connected with box cupling (8), box cupling (8) and ball seat basket are used screwed connection between [righting cylinder] (9), elastic centralizer (11) is enclosed within on ball seat basket [righting cylinder], the bottom of ball seat basket [righting cylinder] (9) is arrived in stifled [guide shoe] (10) with screwed connection at the end.
Have uniform hole on ball seat basket [righting cylinder] (9), stifled [guide shoe] (10), the end, can satisfy the needs that advance slurry, acid fracturing and circulation in the acid fracturing tubing string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210535682.7A CN103089229B (en) | 2012-11-26 | 2012-11-26 | Can acid fracturing pipe column ball seat capable of fishing and being used repeatedly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210535682.7A CN103089229B (en) | 2012-11-26 | 2012-11-26 | Can acid fracturing pipe column ball seat capable of fishing and being used repeatedly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103089229A true CN103089229A (en) | 2013-05-08 |
| CN103089229B CN103089229B (en) | 2016-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210535682.7A Active CN103089229B (en) | 2012-11-26 | 2012-11-26 | Can acid fracturing pipe column ball seat capable of fishing and being used repeatedly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103089229B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025949A (en) * | 2018-08-27 | 2018-12-18 | 中国石油天然气股份有限公司 | Independent acidizing method for complex-structure well bore |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856582A (en) * | 1988-07-20 | 1989-08-15 | Atlantic Richfield Company | Motorized wellbore fishing tool |
| RU2282708C1 (en) * | 2005-01-11 | 2006-08-27 | Открытое акционерное общество "Научно-производственное объединение "Бурение" | Downhole hydraulic jack for releasing of stuck pipes |
| CN201448080U (en) * | 2009-07-11 | 2010-05-05 | 东营市铁人石油机具有限公司 | Wash-over milling fishing integrated tool |
| CN202064867U (en) * | 2011-04-22 | 2011-12-07 | 中国石油天然气股份有限公司 | Strong magnetic type oil gas downhole ball fishing special tool |
| CN203066952U (en) * | 2012-11-26 | 2013-07-17 | 慕武 | Acid-fracturing tubular column ball socket capable of being salvaged and used repeatedly |
-
2012
- 2012-11-26 CN CN201210535682.7A patent/CN103089229B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856582A (en) * | 1988-07-20 | 1989-08-15 | Atlantic Richfield Company | Motorized wellbore fishing tool |
| RU2282708C1 (en) * | 2005-01-11 | 2006-08-27 | Открытое акционерное общество "Научно-производственное объединение "Бурение" | Downhole hydraulic jack for releasing of stuck pipes |
| CN201448080U (en) * | 2009-07-11 | 2010-05-05 | 东营市铁人石油机具有限公司 | Wash-over milling fishing integrated tool |
| CN202064867U (en) * | 2011-04-22 | 2011-12-07 | 中国石油天然气股份有限公司 | Strong magnetic type oil gas downhole ball fishing special tool |
| CN203066952U (en) * | 2012-11-26 | 2013-07-17 | 慕武 | Acid-fracturing tubular column ball socket capable of being salvaged and used repeatedly |
Non-Patent Citations (2)
| Title |
|---|
| 何启贤等: "《光杆落物打捞器的研制与应用》", 《石油钻探技术》 * |
| 叶金胜等: "《胜利油田水平井防砂管柱打捞技术》", 《石油机械》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025949A (en) * | 2018-08-27 | 2018-12-18 | 中国石油天然气股份有限公司 | Independent acidizing method for complex-structure well bore |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103089229B (en) | 2016-08-24 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190924 Address after: 841000 Talent Building A, Kurla Economic and Technological Development Zone, Bayinguoling Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region, 1213-219 Patentee after: Xinjiang Juhang Petroleum Engineering Technology Co., Ltd. Address before: 841001, the Xinjiang Uygur Autonomous Region Korla Development Zone, blue sky road dreamer District No. 18 building 2-201 Patentee before: Mu Wu |
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| TR01 | Transfer of patent right |