CN201474649U - Full-aperture blowout preventer in drilling tool - Google Patents
Full-aperture blowout preventer in drilling tool Download PDFInfo
- Publication number
- CN201474649U CN201474649U CN2009201403521U CN200920140352U CN201474649U CN 201474649 U CN201474649 U CN 201474649U CN 2009201403521 U CN2009201403521 U CN 2009201403521U CN 200920140352 U CN200920140352 U CN 200920140352U CN 201474649 U CN201474649 U CN 201474649U
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- valve plate
- drilling tool
- full
- blowout preventer
- valve body
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Abstract
The utility model relates to a full-aperture blowout preventer in a drilling tool. A valve body is internally provided with a channel; both a left valve plate and a right valve plate are of a semi- conical shape; outward-extending outer flanges are respectively arranged at the upper ends of the left valve plate and the right valve plate; the valve body is internally provided with an inner lug boss; and the outer flanges of the left valve plate and the right valve plate are hung on the upper end surface of the inner lug boss and is open to cause the channel to be in an unblocked state. The utility model has reasonable and compact structure and convenient use; conical valve plates can be completely opened and unblocked with the channel in the drilling tool in a normal circulation or static state, so circulating pressure consumption can be reduced, a valve core is basically not flushed; in addition, corresponding operations can be carried out by various instruments and tools the outside diameters of which are less than a certain size; when drill operation is carried out, once blowout happens in the drilling tool, the full-aperture blowout preventer of the drilling tool can automatically close under the push of liquid power so as to play a role of preventing blowout, and therefore greatly improve the treatment rate when underground accidents happen and improve the flushing resistance of the valve; and in addition, the full-aperture blowout preventer can further measure the pressure of a riser.
Description
One, technical field
The utility model relates to blowout prevention instrument 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, 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 blowout prevention instrument commonly used at present mainly contains: cock, flechette-type flap valve, drop-in check valve, spring forced action type flap valve, butterfly shaped check valve etc.The advantage of above product is: going in a single day blowout takes place 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 handle or be difficult to when down-hole accident occurring to handle; 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 utility model 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 and variously go into the well instrument or instrument is lowered to smoothly or trips out, can't be lowered to various problems of going into well instrument or instrument thereby solve existing drilling tool internal cause blowout prevention instrument master latus rectum.
The technical solution of the utility model realizes by following measure: 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 side 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 a left side 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 position-limiting action to left valve plate and right valve plate 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.
Be further optimization and/or improvements below to above-mentioned utility model technical scheme:
The lower surface of above-mentioned inner convex platform can be up-narrow and down-wide frustum shape, have in the valve body below left valve plate and right valve plate and be no less than two the baffle of setting upright, set upright baffle and be trapezoidal, each long limit of setting upright baffle is fixedly mounted on the valve interior wall, and it is mutually concordant up and down with the inwall of left valve plate and right valve plate that each sets upright the minor face of baffle.
On the above-mentioned valve body screw mounting hole can be arranged, each long limit of setting upright baffle is fixedly mounted on the valve interior wall by screw and screw mounting hole.
The above-mentioned baffle of setting upright can be four and evenly be installed in the valve body.
Above-mentioned left valve plate is or/and can be equipped with 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 said fixing sleeve can be equipped with second sealing ring.
Between the outside of said fixing sleeve and the inboard of valve body the 3rd sealing ring can be installed.
The outside of said fixing sleeve and the inboard of valve body can be fixed together by screw thread, and corresponding on the inwall of fixed muffle have two grooves.
The utility model reasonable and compact in structure, easy to use, direct circulation or under static state the taper valve plate can all open unimpeded with the drilling tool passage, therefore reduce circulation and pressed consumption, spool there is not erosion substantially, 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 takes place when drillng operation, inner blowout preventer of full-port drilling tool can be closed automatically under the promotion of hydrodynamic and be played the effect of blowout prevention, therefore when down-hole accident takes place, 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 2 is looked the sectional structure schematic diagram for the master of the utility model most preferred embodiment 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 for setting upright baffle, and 10 is screw, 11 is first sealing ring, and 12 is plug, and 13 is second sealing ring, and 14 is the 3rd sealing ring.
Five, the specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
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 side 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 a left side 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 be sealed 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 reduce circulation and pressed consumption, spool there is not erosion substantially, 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 takes place when drillng operation, this inner blowout preventer of full-port drilling tool can be closed automatically and be played 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, have in the valve body 1 below left valve plate 2 and right valve plate 3 be no less than two set upright baffle 9, set upright baffle 9 and be trapezoidal, each long limit of setting upright baffle 9 is fixedly mounted on valve body 1 inwall, it is mutually concordant up and down with the inwall of right valve plate 3 with left valve plate 2 that each sets upright the minor face of baffle 9, like this, by setting upright the guide effect of baffle 9, just can avoid downhole tool when up, to be suspended on left valve plate 2 and the right valve plate 3 effectively.
Shown in accompanying drawing 1,2, on valve body 1, screw mounting hole is arranged, each long limit of setting upright baffle 9 is fixedly mounted on valve body 1 inwall by screw 10 and screw mounting hole.
Shown in accompanying drawing 1,2,, set upright baffle 9 and be preferably four and evenly be installed in the valve body 1 according to actual conditions.
Shown in accompanying drawing 1,2, in order to increase sealing, first sealing ring 11 is installed on left valve plate 2, perhaps, first sealing ring 11 is installed on right valve plate 3, perhaps, 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, on 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 second sealing ring 13.
Shown in accompanying drawing 1,2,, the 3rd sealing ring 14 is installed between the inboard of the outside of fixed muffle 4 and valve body 1 in order to increase sealing.
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 8 of two grooves that have corresponding on the inwall of fixed muffle 4 are used for installing and fixing sleeve 4 with erecting tools.
Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of the utility model most preferred embodiment: between at first the utility model being installed in drilling rod and boring very or be installed in other position as required, at normal drilling well circulation time (being direct circulation in the drilling tool), because passage 7 is opened fully, therefore reduced circulation and pressed consumption, left valve plate 2 and right valve plate 3 have not been had erosion substantially.For the utility model that meets SY/T5215 " drilling tool flap 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 utility model less than 58 millimeters various instruments, instrument; When drillng operation, in case blowout in the drilling tool takes place, the utility model inner blowout preventer of full-port drilling tool can be closed under 0.2MPa pressure automatically, thereby plays 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 side 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 a left side 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 position-limiting action to left valve plate and right valve plate 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, have in the valve body below left valve plate and right valve plate and be no less than two the baffle of setting upright, set upright baffle and be trapezoidal, each long limit of setting upright baffle is fixedly mounted on the valve interior wall, and it is mutually concordant up and down with the inwall of left valve plate and right valve plate that each sets upright the minor face of baffle.
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 each long limit of setting upright 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 setting upright baffle and is four and evenly be installed in the valve body.
5. according to claim 1 or 2 or 3 or 4 described inner blowout preventer of full-port drilling tool, it is characterized in that left valve plate or/and first sealing ring is installed on the inwall of right valve plate.
6. according to claim 1 or 2 or 3 or 4 described inner blowout preventer of full-port drilling tool, it is characterized in that left valve plate, in the runner hole, plug is installed or/and the runner hole is arranged on the right valve plate.
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 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 |
|---|---|---|---|
| CN2009201403521U CN201474649U (en) | 2009-07-31 | 2009-07-31 | Full-aperture blowout preventer in drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201403521U CN201474649U (en) | 2009-07-31 | 2009-07-31 | Full-aperture blowout preventer in drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201474649U true CN201474649U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201403521U Expired - Lifetime CN201474649U (en) | 2009-07-31 | 2009-07-31 | Full-aperture blowout preventer in drilling tool |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536132A (en) * | 2011-12-31 | 2012-07-04 | 中国石油集团川庆钻探工程有限公司 | Drilling tool joint convenient for inclination measurement operation |
| CN101629480B (en) * | 2009-07-31 | 2013-02-13 | 中国石油集团西部钻探工程有限公司准东钻井公司 | Inner blowout preventer of full-port drilling tool |
| CN104533343A (en) * | 2015-01-16 | 2015-04-22 | 苏州海德石油工具有限公司 | Automatic closing sleeve valve |
| CN113775317A (en) * | 2020-06-09 | 2021-12-10 | 中国石油天然气股份有限公司 | Blowout preventer and drilling tool |
-
2009
- 2009-07-31 CN CN2009201403521U patent/CN201474649U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629480B (en) * | 2009-07-31 | 2013-02-13 | 中国石油集团西部钻探工程有限公司准东钻井公司 | Inner blowout preventer of full-port drilling tool |
| CN102536132A (en) * | 2011-12-31 | 2012-07-04 | 中国石油集团川庆钻探工程有限公司 | Drilling tool joint convenient for inclination measurement operation |
| CN104533343A (en) * | 2015-01-16 | 2015-04-22 | 苏州海德石油工具有限公司 | Automatic closing sleeve valve |
| CN113775317A (en) * | 2020-06-09 | 2021-12-10 | 中国石油天然气股份有限公司 | Blowout preventer and drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100519 Effective date of abandoning: 20090731 |
|
| RGAV | Abandon patent right to avoid regrant |