CN101629480B - Inner blowout preventer of full-port drilling tool - Google Patents
Inner blowout preventer of full-port drilling tool Download PDFInfo
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- CN101629480B CN101629480B CN 200910113405 CN200910113405A CN101629480B CN 101629480 B CN101629480 B CN 101629480B CN 200910113405 CN200910113405 CN 200910113405 CN 200910113405 A CN200910113405 A CN 200910113405A CN 101629480 B CN101629480 B CN 101629480B
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- valve plate
- drilling tool
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- blowout preventer
- valve body
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- 238000005553 drilling Methods 0.000 title claims abstract description 42
- 238000007789 sealing Methods 0.000 claims description 17
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003068 static effect Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 1
- 230000003628 erosive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
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Abstract
The invention relates to an inner blowout preventer of a full-port drilling tool. A valve body is internally provided with a passage and a lug boss; a left valve plate and a right valve plate are semi-circle conical; and the upper ends of the left valve plate and the right valve plate are respectively provided with outer flanges which are hung on the upper end surface of the lug boss and are in an open state so that the passage is in a through state. The invention has reasonable and compact structure and convenient use; and the conical valve plates can be fully opened in a positive cycle or static state to smoothen the passage of the drilling tool so as to reduce circulating pressure loss, basically have no erode to a valve core and carry out corresponding drilling operation by various instruments and tools with outside diameters smaller than a certain size. The inner blowout preventer of the full-port drilling tool can be automatically closed under the push of liquid dynamic power so as to take the blowout-preventing effect in case of blowouts in the drilling tool during the drilling operation, thereby not only extremely improving the processing rate during downhole accidents, but also improving the anti-erosion capability of the valve and further measuring the pressure of a vertical pipe.
Description
One, technical field
The present invention relates to jet-preventing tool in the drilling tool, is a kind of inner blowout preventer of full-port drilling tool.
Two, background technology
" the secondary well control " that be controlled to be content with well head pressure is the key core process of whole well control.At present more to the control device of mineshaft annulus, such as ring-like preventer, single disc, double disc etc.Under a stable condition, the annular space blowout out of control also has means to remedy.But in case out of control then be difficult to remedy in the drilling tool, to shear drilling tool be a kind of helpless measure and use, and most of well is owing to being subjected to the restriction of a variety of causes not join shear ram.Drilling tool jet-preventing tool commonly used mainly contains at present: cock, arrow-shaped check valve, drop-in check valve, spring forced action type flap valve, butterfly shaped check valve etc.The advantage of above product is: entering in a single day blowout occurs when the well drilling tool is installed and used anti-phasely to close (particularly flap valve).When its defective is normal drilling well or inactive state, one, can not pass through self-floating list multiple shot tool, breakouting pack of dynamite cutting device, sealed coring pitching, MWD fisher etc., cause and can't process or be difficult to when down-hole accident occurring to process; Two, can't measure standpipe pressure; Three, produce certain flow circuit resistance, and the existing spool that flings causes very easily erosion to damage inefficacy.
Three, summary of the invention
The invention provides a kind of inner blowout preventer of full-port drilling tool, overcome the deficiency of above-mentioned prior art, it can realize the effect of effective blowout prevention, can make again variously to enter the well instrument or instrument is lowered to smoothly or trips out, can't be lowered to the various problems that enter well instrument or instrument thereby solve existing drilling tool internal cause jet-preventing tool master latus rectum.
Technical scheme of the present invention realizes by following measures: a kind of inner blowout preventer of full-port drilling tool comprises valve body, left valve plate, right valve plate and fixed muffle; Passage is arranged in valve body, left valve plate and right valve plate all are half cone-shaped, all there is outwardly directed outward flange upper end at left valve plate and right valve plate, inner convex platform is arranged in valve body, the outward flange of left valve plate and right valve plate hangs on the upper surface of inner convex platform and is and opens shape and make passage be in unimpeded state, the fixed muffle that can play to left valve plate and right valve plate position-limiting action is installed in the valve body above inner convex platform, and left valve plate and right valve plate upwards are closed form after the upset and can seal the passage of valve body.
The below is the further optimization and/or improvements to the foregoing invention technical scheme:
The lower surface of above-mentioned inner convex platform can be up-narrow and down-wide frustum shape, the righting baffle that is no less than two is arranged in the valve body below left valve plate and right valve plate, the righting baffle is trapezoidal, the long limit of each righting baffle is fixedly mounted on the valve interior wall, and the minor face of each righting baffle is mutually concordant up and down with the inwall of left valve plate and right valve plate.
On the above-mentioned valve body screw mounting hole can be arranged, the long limit of each righting baffle is fixedly mounted on the valve interior wall by screw and screw mounting hole.
Above-mentioned righting baffle can be four and also evenly is installed in the valve body.
Above-mentioned left valve plate is or/and can be equipped with the first sealing ring on the inwall of right valve plate.
Above-mentioned left valve plate is equipped with plug or/and on the right valve plate runner hole can be arranged in the runner hole.
The bottom of above-mentioned fixed muffle can be equipped with the second sealing ring.
Between the outside of above-mentioned fixed muffle and the inboard of valve body the 3rd sealing ring can be installed.
The outside of above-mentioned fixed muffle and the inboard of valve body can be fixed together by screw thread, and corresponding on the inwall of fixed muffle have two grooves.
Reasonable and compact in structure of the present invention, easy to use, direct circulation or under static state the taper valve plate can all open with the drilling tool passage unimpeded, therefore reduced cyclic pressure dissipation, to spool substantially without erosion, and can be by the various instruments of external diameter less than certain size, instrument and carry out corresponding Job Operations, in a single day blowout in the drilling tool occurs when drillng operation, inner blowout preventer of full-port drilling tool can autoshutdown under the promotion of hydrodynamic and play the effect of blowout prevention, therefore when down-hole accident occurs, greatly improve handling rate, but also improved the erosion resistance ability of this valve; Can also further measure standpipe pressure.
Four, description of drawings
Accompanying drawing 1 is looked the sectional structure schematic diagram for the master of most preferred embodiment of the present invention when opening.
Accompanying drawing 2 is looked the sectional structure schematic diagram for the master of most preferred embodiment of the present invention when closing.
Coding in the accompanying drawing is respectively: 1 is valve body, and 2 is left valve plate, and 3 is right valve plate, and 4 is fixed muffle, and 5 is outward flange, 6 is inner convex platform, and 7 is passage, and 8 is groove, and 9 are the righting baffle, and 10 is screw, 11 is the first sealing ring, and 12 is plug, and 13 is the second sealing ring, and 14 is the 3rd sealing ring.
Five, the specific embodiment
The present invention is not subjected to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
The invention will be further described below in conjunction with embodiment and accompanying drawing:
Shown in accompanying drawing 1,2, this inner blowout preventer of full-port drilling tool comprises valve body 1, left valve plate 2, right valve plate 3 and fixed muffle 4; Passage 7 is arranged in valve body 1, left valve plate 2 and right valve plate 3 all are half cone-shaped, in the upper end of left valve plate 2 and right valve plate 3 outwardly directed outward flange 5 is arranged all, inner convex platform 6 is arranged in valve body 1, the outward flange 5 of left valve plate 2 and right valve plate 3 hangs on the upper surface of inner convex platform 6 and is and opens shape and make passage 7 be in unimpeded state, being equipped with in the valve body 1 above inner convex platform 6 can be to the fixed muffle 4 of left valve plate 2 and 3 position-limiting actions of right valve plate, and left valve plate 2 and right valve plate 3 upwards are the passage 7 that closed form also can seal valve body 1 after the upset.Like this, in direct circulation or under static state, the taper valve plate is that left valve plate 2 and right valve plate 3 can all be opened and unimpeded with the drilling tool passage, therefore reduced cyclic pressure dissipation, to spool substantially without erosion, and can carry out corresponding Job Operations less than various instruments, the instrument of certain size by external diameter, in a single day blowout in the drilling tool occurs when drillng operation, this inner blowout preventer of full-port drilling tool can autoshutdown and play the effect of blowout prevention.
Can according to actual needs, above-mentioned inner blowout preventer of full-port drilling tool be made further optimization and/or improvements:
Shown in accompanying drawing 1,2, the lower surface of inner convex platform 6 is up-narrow and down-wide frustum shape, the righting baffle 9 that is no less than two is arranged in the valve body 1 below left valve plate 2 and right valve plate 3, righting baffle 9 is trapezoidal, the long limit of each righting baffle 9 is fixedly mounted on valve body 1 inwall, the minor face of each righting baffle 9 is mutually concordant up and down with the inwall of right valve plate 3 with left valve plate 2, like this, by the guide effect of righting baffle 9, just can effectively avoid downhole tool when up, to be suspended on left valve plate 2 and the right valve plate 3.
Shown in accompanying drawing 1,2, at valve body 1 screw mounting hole is arranged, the long limit of each righting baffle 9 is fixedly mounted on valve body 1 inwall by screw 10 and screw mounting hole.
Shown in accompanying drawing 1,2, according to actual conditions, righting baffle 9 is preferably four and also evenly is installed in the valve body 1.
Shown in accompanying drawing 1,2, in order to increase sealing, at left valve plate 2 the first sealing ring 11 is installed, perhaps, at right valve plate 3 the first sealing ring 11 is installed, perhaps, the first sealing ring 11 is installed all on the inwall of left valve plate 2 and right valve plate 3.
Shown in accompanying drawing 1,2, at left valve plate 2 or right valve plate 3 the runner hole is arranged, perhaps, on left valve plate 2 and right valve plate 3, the runner hole is arranged simultaneously, plug 12 is installed in the runner hole.When needs transmit standpipe pressure, unload lower end cap 12 pressure of left valve plate 2 and right valve plate 3 belows is delivered in the passage 7 of left valve plate and right valve plate 3 tops by the runner hole, can carry out pressure measurement work; When not needing to transmit standpipe pressure, plug 12 loaded onto get final product.
Shown in accompanying drawing 1,2, in order to increase sealing, the bottom of fixed muffle 4 is equipped with the second sealing ring 13.
Shown in accompanying drawing 1,2, in order to increase sealing, the 3rd sealing ring 14 is installed between the inboard of the outside of fixed muffle 4 and valve body 1.
Shown in accompanying drawing 1,2, for the ease of installing and maintenance, the inboard of the outside of fixed muffle 4 and valve body 1 is fixed together by screw thread, and 8, two grooves of two grooves 8 that have corresponding on the inwall of fixed muffle 4 are used for erecting tools fixed muffle 4 being installed.
Above technical characterictic has consisted of most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, satisfies the demand of different situations.
The use procedure of most preferred embodiment of the present invention: between at first the present invention being installed in drilling rod and boring very or be installed in as required other position, at normal drilling well circulation time (being direct circulation in the drilling tool), because passage 7 is opened fully, therefore reduced cyclic pressure dissipation, to left valve plate 2 and right valve plate 3 substantially without erosion.For the present invention who meets SY/T5215 " drilling tool check valve " industry standard: under barotropic state, in case down-hole accident occurs, external diameter can carry out corresponding Job Operations by passage 7 of the present invention less than 58 millimeters various instruments, instrument; When drillng operation, in case blowout in the drilling tool occurs, inner blowout preventer of full-port drilling tool of the present invention can be under 0.2MPa pressure autoshutdown, thereby play the effect of blowout prevention.
Claims (10)
1. an inner blowout preventer of full-port drilling tool is characterized in that comprising valve body, left valve plate, right valve plate and fixed muffle; Passage is arranged in valve body, left valve plate and right valve plate all are half cone-shaped, all there is outwardly directed outward flange upper end at left valve plate and right valve plate, inner convex platform is arranged in valve body, the outward flange of left valve plate and right valve plate hangs on the upper surface of inner convex platform and is and opens shape and make passage be in unimpeded state, the fixed muffle that can play to left valve plate and right valve plate position-limiting action is installed in the valve body above inner convex platform, and left valve plate and right valve plate upwards are closed form after the upset and can seal the passage of valve body.
2. inner blowout preventer of full-port drilling tool according to claim 1, the lower surface that it is characterized in that inner convex platform is up-narrow and down-wide frustum shape, the righting baffle that is no less than two is arranged in the valve body below left valve plate and right valve plate, the righting baffle is trapezoidal, the long limit of each righting baffle is fixedly mounted on the valve interior wall, and the minor face of each righting baffle is mutually concordant up and down with the inwall of left valve plate and right valve plate.
3. inner blowout preventer of full-port drilling tool according to claim 2 is characterized in that screw mounting hole is arranged on the valve body, and the long limit of each righting baffle is fixedly mounted on the valve interior wall by screw and screw mounting hole.
4. inner blowout preventer of full-port drilling tool according to claim 3 is characterized in that the righting baffle is four and evenly is installed in the valve body.
5. according to claim 1 and 2 or 3 or 4 described inner blowout preventer of full-port drilling tool, it is characterized in that left valve plate or/and the first sealing ring is installed on the inwall of right valve plate.
6. according to claim 1 and 2 or 3 or 4 described inner blowout preventer of full-port drilling tool, it is characterized in that left valve plate or/and the runner hole is arranged on the right valve plate, in the runner hole, plug is installed.
7. inner blowout preventer of full-port drilling tool according to claim 5 is characterized in that left valve plate or/and the runner hole is arranged on the right valve plate, in the runner hole plug is installed.
8. inner blowout preventer of full-port drilling tool according to claim 7 is characterized in that the bottom of fixed muffle is equipped with the second sealing ring.
9. inner blowout preventer of full-port drilling tool according to claim 8 is characterized in that between the inboard of the outside of fixed muffle and valve body the 3rd sealing ring being installed.
10. inner blowout preventer of full-port drilling tool according to claim 9 is characterized in that the outside of fixed muffle and the inboard of valve body are fixed together by screw thread, and corresponding on the inwall of fixed muffle have two grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910113405 CN101629480B (en) | 2009-07-31 | 2009-07-31 | Inner blowout preventer of full-port drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910113405 CN101629480B (en) | 2009-07-31 | 2009-07-31 | Inner blowout preventer of full-port drilling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101629480A CN101629480A (en) | 2010-01-20 |
| CN101629480B true CN101629480B (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910113405 Expired - Fee Related CN101629480B (en) | 2009-07-31 | 2009-07-31 | Inner blowout preventer of full-port drilling tool |
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| Country | Link |
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| CN (1) | CN101629480B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418496B (en) * | 2011-08-17 | 2014-01-22 | 长沙市罡拓能源科技有限公司 | Self-balanced underground full-bore check valve |
| CN103953312B (en) * | 2014-04-21 | 2016-04-13 | 西南石油大学 | Jet-preventing tool in a kind of revolving type of impeller-driven |
| AU2017324094B2 (en) * | 2016-09-12 | 2020-10-15 | Kinetic Pressure Control, Ltd. | Improved blowout preventer |
| CN107044272B (en) * | 2017-06-23 | 2019-04-02 | 西南石油大学 | A kind of coiled tubing paraffin removal unit |
| CN107366522B (en) * | 2017-08-01 | 2023-08-18 | 中国石油天然气集团有限公司 | Sliding sleeve opening tool with variable length and sleeve sliding sleeve thereof |
| CN113090219B (en) * | 2021-06-09 | 2021-08-17 | 西南石油大学 | Downhole blowout preventer |
| CN113863866A (en) * | 2021-10-21 | 2021-12-31 | 盐城市荣嘉机械制造有限公司 | Blowout prevention and anti-reflux drill bit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2941544A (en) * | 1955-09-27 | 1960-06-21 | Renault | Fluid control devices and elastic pressure-responsive valves |
| US3684013A (en) * | 1971-01-19 | 1972-08-15 | Brown Well Service & Supply Co | Well pipe string valve |
| SU1479621A1 (en) * | 1987-06-05 | 1989-05-15 | Полтавское отделение Украинского научно-исследовательского геологоразведочного института | Check valve for drill string |
| CN2353883Y (en) * | 1998-10-17 | 1999-12-15 | 王树国 | Underground automatic gas distribution valve |
| US6889771B1 (en) * | 2002-07-29 | 2005-05-10 | Schlumberger Technology Corporation | Selective direct and reverse circulation check valve mechanism for coiled tubing |
| CN201474649U (en) * | 2009-07-31 | 2010-05-19 | 中国石油集团西部钻探工程有限公司准东钻井公司 | Full-aperture blowout preventer in drilling tool |
-
2009
- 2009-07-31 CN CN 200910113405 patent/CN101629480B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2941544A (en) * | 1955-09-27 | 1960-06-21 | Renault | Fluid control devices and elastic pressure-responsive valves |
| US3684013A (en) * | 1971-01-19 | 1972-08-15 | Brown Well Service & Supply Co | Well pipe string valve |
| SU1479621A1 (en) * | 1987-06-05 | 1989-05-15 | Полтавское отделение Украинского научно-исследовательского геологоразведочного института | Check valve for drill string |
| CN2353883Y (en) * | 1998-10-17 | 1999-12-15 | 王树国 | Underground automatic gas distribution valve |
| US6889771B1 (en) * | 2002-07-29 | 2005-05-10 | Schlumberger Technology Corporation | Selective direct and reverse circulation check valve mechanism for coiled tubing |
| CN201474649U (en) * | 2009-07-31 | 2010-05-19 | 中国石油集团西部钻探工程有限公司准东钻井公司 | Full-aperture blowout preventer in drilling tool |
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| Publication number | Publication date |
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| CN101629480A (en) | 2010-01-20 |
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