CN103089229B - Can acid fracturing pipe column ball seat capable of fishing and being used repeatedly - Google Patents
Can acid fracturing pipe column ball seat capable of fishing and being used repeatedly Download PDFInfo
- Publication number
- CN103089229B CN103089229B CN201210535682.7A CN201210535682A CN103089229B CN 103089229 B CN103089229 B CN 103089229B CN 201210535682 A CN201210535682 A CN 201210535682A CN 103089229 B CN103089229 B CN 103089229B
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- ball seat
- ball
- acid fracturing
- falling prevention
- fishing
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Abstract
The invention discloses one can acid fracturing pipe column ball seat capable of fishing and being used repeatedly, it is characterized in that inwardly opened window dipper is connected on the ball seat body bottom portion of acid fracturing pipe tail, ball falling prevention ball seat pin is connected in the ball seat body of acid fracturing pipe tail, tangle with shoulder between ball falling prevention ball seat and ball seat urceolus fishing head and connect with pin, connect with tubing coupling between ball seat urceolus fishing head and ball seat basket, elastic centralizer can make whole fallen ball seat be substantially centered in well center be easy to salvage, the end, is blocked up and can prevent elastic centralizer from passing through the slippage of ball seat basket outer wall, the pin of ball falling prevention ball seat and ball seat urceolus fishing head drops to shaft bottom by ball seat indigo plant inner tube after being cut off becomes junk.Transfer when playing acid fracturing tubing string and shot down to the ball seat in shaft bottom, ball and adnexa thereof before tubing string the most directly can salvage acid fracturing, the most reusable, safe and reliable.
Description
Technical field
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, the acid of gas
During changing pressing crack construction and whole production oil gas.If can not form commercial hydrocarbon flow after acid fracturing, intensification to be continued is crept into
Or when needing to carry out other measure operation during oil recovery, gas, fallen ball before can directly salvaging acid fracturing before lift pipe string
Seat and ball, flush out bottom hole falling article for lower step continuation safety drilling, modification measures operation, and reusable.
Background technology
Acid fracturing or formation testing, the acid fracturing construction of gas is carried out during oil drilling drilling process has the pilot production after oil/gas show
In, after packer set, ball seat and the ball of oil pipe string afterbody are shot down and make it directly drop down onto shaft bottom formation gas channel before acid fracturing,
And meet and produce various measure operations and test instrunment during oil gas and go out the needs that pipe tail carries out at Open-Hole Section testing.
Summary of the invention
If such well produces with regard to this completion, cementing plug sidetracking or no longer carry out other measure after tripping out acid fracturing tubing string
During operation, follow-up work is not had any impact.Continue intensification creep into or produce after a period of time again if problem is such well
The most totally can not continue to creep into regard to this because of shaft bottom when secondary intensification is crept into, can only can continue to creep into after first junk at the bottom of clear well,
Creep into for continuation intensification and cause many difficulties and complexity.There is presently no can once salvage ball seat and ball properly salvage work
Tool, can only carry out milling with milling tool.One secondary ball seat and ball be not clean, in order to make shaft bottom with mill during an efficient milling shoes milling
Cleaning, ensures creeping into safely and fast of next step, at least to carry out milling by lower second efficient milling shoes, this had both delayed substantial amounts of
Drilling time, has delayed again oil-gas exploration progress.
The problem being difficult to for above-mentioned ball and ball seat salvage, the purpose of the present invention has aimed to provide one and has tripped out acid fracturing pipe
Fallen ball seat and ball before can the most disposably salvaging clean acid fracturing before post.This principle that can disposably salvage ball seat is design
Original ball seat without suitable fishing tool is for there being the salvageable ball seat of suitable fishing tool.Solve to fall because shaft bottom can not be salvaged
Thing and the problem that milling must be carried out.
It is an object of the invention to so to complete:
Can acid fracturing pipe column ball seat capable of fishing and being used repeatedly, mainly by ball seat body, steel ball, O, seat shear pin, anti-lost
Ball ball seat, ball seat urceolus fishing head, shear pin, box cupling, ball seat basket, the end be stifled, elastic centralizer and inwardly opened window dipper composition.Inside open
Window dipper is connected on the screw thread of acid fracturing tubing string pipe tail ball seat body bottom portion, and ball falling prevention ball seat seat shear pin is connected to ball seat originally
Internal, and seal with O, tangling with shoulder between ball falling prevention ball seat and ball seat urceolus fishing head and connect with shear pin can not
Freely stretch, shear pin cut off after retractable between them, between ball seat urceolus fishing head and ball seat basket with box cupling even
Connect, ball seat basket external elastic centralizer righting, have stifled screwed connection to the ball seat portion in the key, the end of passage.Ball seat basket, the end, block
Have uniform hole, in acid fracturing tubing string can be met, enter slurry, acid fracturing and the needs of circulation.
Advantages of the present invention and generation provide the benefit that:
1, present configuration is simple, uses conventional part to assemble, it is easy to processing, and inwardly opened window dipper is directly and acid fracturing pipe tail ball seat
The oil pipe thread of body is connected to pipe tail, and ball falling prevention ball seat can accept and ensure that fallen ball does not drop down onto formation shaft bottom, shaft bottom and falls
Thing, is connected with tubing coupling between ball seat urceolus fishing head and ball seat basket, and elastic centralizer is enclosed within ball seat basket, because of the resistance of box cupling
Gear centralizer does not affect the window cutting dipper salvaging to ball seat urceolus fishing head.Elastic centralizer ensures that ball seat urceolus fishing head is at well
Ophthalmic is placed in the middle, it is simple to realize salvaging.The end, is blocked up and can stop that fallen ball seat and ball and elastic centralizer do not drop down onto shaft bottom and form well
End junk.Installing/dismounting is simple, also can re-assembly, reuse after salvaging, and safe and reliable.
2, after the success of the test of scene of the present invention, during popularization and application, every mouthful of well is the most at least saved and is made a trip twice and twice mill
The time (well of nearly seven kms can at least save the time more than 4 days) of milling, a ball seat and ball, two efficient milling shoes, it is also ensured that
Continue safety drilling, cost-effective, be substantially reduced post workman labor intensity, accelerate oil-gas exploration progress.
Accompanying drawing explanation
Fig. 1 is sectional view of the present invention.
Detailed description of the invention
As it is shown in figure 1, one can acid fracturing pipe column ball seat capable of fishing and being used repeatedly, mainly by ball seat body 1, steel ball 2, O
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 9, the end, block up 10, elasticity is held up
Positive device 11 and inwardly opened window dipper 12 form.
Inwardly opened window dipper 12 is connected on the screw thread bottom acid fracturing tubing string pipe tail ball seat body 1, and ball falling prevention ball seat ball seat is cut
Cutting pin 4 to be connected in ball seat body 1, and seal with O 3, the oil pipe thread of acid fracturing pipe tail ball seat body 1 connects one neither
Can tangle ball falling prevention ball seat 5, can salvage again the inwardly opened window dipper 12 of this ball seat urceolus fishing head 6, ball falling prevention ball seat 5 can ensure quilt
The steel ball 2 shot down is in all the time in ball seat and does not drop down onto shaft bottom and become junk, between ball falling prevention ball seat 5, ball seat urceolus fishing head 6 is
Tangle with shoulder and use shear pin 7 to couple, certain shearing force can be born, when lower acid fracturing tubing string so can be avoided slightly to be hampered
Ball falling prevention ball seat 5 closes, with ball seat urceolus fishing head 6, the salvaging in advance caused.Ball falling prevention ball seat 5 is less than because of its diameter before shooting down
Window cutting dipper 12 salvages salvaging size and the consistent shoulder that can not hang of diameter of window, so ball falling prevention ball seat less than 5 is connected
Whole devices can drop down onto shaft bottom smoothly and not tangled to cause by the inwardly opened window dipper 12 being connected on pipe tail in advance and salvage in advance.The end
Stifled 10 can stop that ball falling prevention ball seat 5, elastic centralizer 11 drop out ball seat basket and drop down onto shaft bottom formation junk.Ball seat urceolus fishing head 6
Because ball seat basket 9 is by elastic centralizer 11 righting, it is ensured that fallen ball seat is placed in the middle, in drawing of ball falling prevention ball seat 5 in well
Lead down and easily enter inwardly opened window dipper 12.Play before acid fracturing tubing string well killing fluid in the good well of circular treatment, calculate salvaging well depth chi
Very little, progressively transfer tubing string, suitably can have the tubing string of tooth at the bottom of rotary cylinder when having and being hampered display, when telescopic ball falling prevention ball seat 5
Enter and be not easily accessible pipe tail because shooting down the close reason of front fit dimension when inwardly opened window dipper 12 touches the ball seat body 1 of pipe tail
In ball seat body 1, the weight that such pipe tail ball seat body 1 can apply acid fracturing pipe string to ball falling prevention ball seat 5 top, when being applied to one
Determining to make the shear pin 7 between ball falling prevention ball seat 5 and ball seat urceolus fishing head 6 be cut off during weight, ball falling prevention ball seat 5 is pressed into ball
In seat urceolus fishing head 6 and ball seat basket 9, the end being connected under ball seat basket 9, is blocked up 10 and ball falling prevention ball seat 5 can be prevented by ball seat basket 9
Endoporus falls to shaft bottom, elastic centralizer 11 is fallen by the outer wall of ball seat basket 9 becomes junk to shaft bottom.If ball falling prevention ball seat 5 energy
Enough enter smoothly in pipe tail ball seat 1, be connected on the inwardly opened window of pipe tail ball seat body 1 in advance drag for when ball seat urceolus fishing head 6 touches
The salvaging position of cylinder 12, the shoulder salvaging window cover goal seat urceolus fishing head 6 of inwardly opened window dipper 12 is formed fall to support, just
Can realize disposably salvaging fallen ball seat and ball, dispose bottom hole falling article.
Claims (1)
1. can an acid fracturing pipe column ball seat capable of fishing and being used repeatedly, mainly by ball seat body (1), steel ball (2), O (3), ball 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 (9), the end, blocked up
(10), elastic centralizer (11) and inwardly opened window dipper (12) composition, it is characterized in that inwardly opened window dipper (12) is connected on acid fracturing tubing string pipe
On the screw thread of tail ball seat body bottom portion, ball falling prevention ball seat (5) seat shear pin (4) is connected to the ball seat body of acid fracturing pipe tail
(1), in, O (3) realizes the sealing between ball falling prevention ball seat (5) and ball seat body (1), outside ball falling prevention ball seat (5) and ball seat
Tangling with shoulder between cylinder fishing head (6) and use shear pin (7) to connect, ball seat urceolus fishing head (6) is connected with box cupling (8), connects
With screwed connection between hoop (8) and ball seat basket (9), elastic centralizer (11) is enclosed within ball seat basket, and stifled (10) use screwed connection at the end
To the bottom of ball seat basket (9), ball seat basket (9), the end stifled (10) have uniform hole.
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 CN103089229A (en) | 2013-05-08 |
| CN103089229B true 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) |
Families Citing this family (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 | A kind of complex structural well wellbore independence acidization tool |
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 | Strongly magnetic special tool for fishing balls in oil-gas well |
| 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 | Strongly magnetic special tool for fishing balls in oil-gas well |
| 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 |
|---|
| 《光杆落物打捞器的研制与应用》;何启贤等;《石油钻探技术》;20030425;第31卷(第2期);第45-46页 * |
| 《胜利油田水平井防砂管柱打捞技术》;叶金胜等;《石油机械》;20020925;第30卷(第9期);第40-42页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103089229A (en) | 2013-05-08 |
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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 |