CN101979822A - Anti-rotation device for well cementing glue plug - Google Patents
Anti-rotation device for well cementing glue plug Download PDFInfo
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- CN101979822A CN101979822A CN2010105421846A CN201010542184A CN101979822A CN 101979822 A CN101979822 A CN 101979822A CN 2010105421846 A CN2010105421846 A CN 2010105421846A CN 201010542184 A CN201010542184 A CN 201010542184A CN 101979822 A CN101979822 A CN 101979822A
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Abstract
The invention relates to the technical field of an anti-rotation device for a well cementing glue plug of an oil/gas well, in particular to an anti-rotation device for a well cementing glue plug. The anti-rotation device comprises a glue plug body, a glue plug core, an anti-rotation core, an anti-rotation core seat and a floating hoop; the glue plug body is fixed on the outer side of the glue plug core; the frustum-shaped anti-rotation core with a wide upper part and a narrow lower part is fixed on the lower part of the glue plug core; bosses which have a bevel gear shape are uniformly fixed on the outer side of the anti-rotation core in intervals from top to bottom; a frustum-shaped mounting cavity with a wide upper part and a narrow lower part is formed on the upper part of the anti-rotation core seat; meshing grooves are uniformly distributed on the side wall of the mounting cavity in intervals; and the bosses which have the bevel gear shape are meshed in the meshing grooves. The anti-rotation device for the well cementing glue plug has a reasonable and compact structure and is convenient to use; the anti-rotation core and the anti-rotation core seat can be automatically meshed at one time; and in the process of drilling the glue plug, the glue plug body does not rotate with a drill bit to fulfill the aim of efficiently and quickly drilling off the glue plug and accessories, so that the working efficiency is greatly improved and the cost and the potential safety hazard are reduced.
Description
Technical field
The present invention relates to the anti-plug tumbler technical field of oil gas well cementing operation, is a kind of cementing plug anti-rotation device.
Background technology
At first to bore the plug operation after the tradition cementing operation, and be plane contact between existing plug and the float collar, when the bit drills cementing plug, cementing plug easily rotates with drill bit, influenced the crushing efficiency of drill bit to cementing plug, has prolonged the time that drill bit drills plug and supporting float collar, not only increased drilling cost, and, casing wall has also been caused more serious wearing and tearing because drill bit rotates in the permanent position for a long time, hide some dangers for for later oil well production.
Summary of the invention
The invention provides a kind of cementing plug anti-rotation device, overcome the deficiency of above-mentioned prior art, it can effectively solve the problem that drill bit easily rotates with cementing plug.
Technical scheme of the present invention realizes by following measure: a kind of cementing plug anti-rotation device comprises rubber plug body, plug core, anti-rotation core, anti-rotation core print seat and float collar; The outside at the plug core is fixed with rubber plug body, be fixed with the anti-rotation core of the taper type that is wide at the top and narrow at the bottom in the bottom of plug core, even from top to bottom fixed interval has bevel gear type boss in the outside of anti-rotation core, the installation cavity that is taper type wide at the top and narrow at the bottom is arranged on the top of anti-rotation core print seat, on the sidewall of installation cavity, evenly be intervally distributed with mesh groove, bevel gear type boss is engaged in the mesh groove, the anti-rotation core print seat is fixedly mounted in the middle part of float collar, and at least one and the anti-rotation core beveled cone with tapering is arranged in the outside of rubber plug body.
Be further optimization and/or improvements below to the foregoing invention technical scheme:
The cross section top of above-mentioned bevel gear type boss can become smooth arc, the linear corner angle of cross section root of bevel gear type boss, and the linear corner angle in the top of mesh groove, the root of mesh groove becomes smooth arc.
Can there be axially extending bore at the middle part of above-mentioned anti-rotation core.
Above-mentioned float collar can comprise float collar body, valve head, valve seat, valve rod, compression spring and holder; The valve seat of external diameter less than float collar body internal diameter arranged in the float collar body, valve seat comprises upper binding head, seal spool body and lower union joint, upper binding head, seal spool body and lower union joint are fixed together from top to bottom, the outside, upper end of upper binding head is fixed together by screw thread with the inboard, lower end of anti-rotation core print seat, the seal spool body is up-narrow and down-wide cone table, the outside of holder is fixedly mounted in the lower end of lower union joint by screw thread, there is installing hole at middle part at holder, the upper end of valve rod is fixed with valve head, the lower end of valve rod is positioned at installing hole, be equipped with in the valve rod outside and can make valve head withstand on compression spring on the seal spool body medial surface, the upper end of compression spring withstands on the bottom surface of valve head, the lower end of compression spring is fixed on the holder, on the mount pad in the compression spring outside, the cement paste discharge orifice is arranged, at the float collar body, valve seat, form installation cavity between the beveled cone of anti-rotation core print seat and rubber plug body bottommost, in installation cavity, be installed with cement stone.
Mounting groove can be arranged at the bottom of above-mentioned plug core, the anti-rotation core comprises installation head and is the anti-rotary head of taper type wide at the top and narrow at the bottom, the bottom of installation head and the top of anti-rotary head are fixed together, the external diameter of installation head is less than anti-rotation crown portion external diameter, installation head is fixedly mounted in the mounting groove by screw thread, even from top to bottom fixed interval has bevel gear type boss in the outside of anti-rotary head, and there is axially extending bore at the middle part of installation head and anti-rotary head.
Above-mentioned bevel gear type boss can be 9.
Reasonable and compact in structure of the present invention, easy to use, anti-rotation core and anti-rotation core print seat can be realized disposable automatic engagement, in boring the plug process, rubber plug body no longer rotates with drill bit, thereby therefore the purpose that reaches efficient, saves time, bores plug and annex has fast greatly improved operating efficiency, has reduced cost and potential safety hazard.
Description of drawings
Accompanying drawing 1 is looked the broken section structural representation for the master of most preferred embodiment of the present invention.
Accompanying drawing 2 is looked the half section structural representation for the master after rubber plug body, plug core, anti-rotation core connect in the most preferred embodiment of the present invention.
Accompanying drawing 3 is to prevent in the accompanying drawing 2 that the A of rotary head is to structural representation.
Accompanying drawing 4 is looked the sectional structure schematic diagram for the master of anti-rotation core print seat in the most preferred embodiment of the present invention.
Accompanying drawing 5 is the plan structure schematic diagram of accompanying drawing 4.
Accompanying drawing 6 is that the B-B of accompanying drawing 4 is to the sectional structure schematic diagram.
Accompanying drawing 7 is looked the half section structural representation for the master that anti-rotation core print seat in the most preferred embodiment of the present invention is installed in the float collar.
Coding in the accompanying drawing is respectively: 1 is rubber plug body, and 2 is the plug core, and 3 is the anti-rotation core print seat, and 4 is bevel gear type boss, 5 is installation cavity, and 6 is mesh groove, and 7 is beveled cone, and 8 is axially extending bore, 9 is the float collar body, and 10 is valve head, and 11 is valve rod, 12 are the compression spring, and 13 is holder, and 14 is upper binding head, 15 is the seal spool body, and 16 is lower union joint, and 17 are anti-rotary head, 18 is the cement paste discharge orifice, and 19 is cement stone, and 20 is installation head.
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.
In the present invention, for convenience of description, the description of the relative position relation of each parts all is that the Butut mode according to Figure of description is described, as: the position relation of upper and lower, left and right etc. is what to determine according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the present invention is further described:
Shown in accompanying drawing 1 to 7, this cementing plug anti-rotation device comprises rubber plug body 1, plug core 2, anti-rotation core, anti-rotation core print seat 3 and float collar; Be fixed with rubber plug body 1 in the outside of plug core 2, be fixed with the anti-rotation core of the taper type that is wide at the top and narrow at the bottom in the bottom of plug core 2, even from top to bottom fixed interval has bevel gear type boss 4 in the outside of anti-rotation core, the installation cavity 5 that is taper type wide at the top and narrow at the bottom is arranged on the top of anti-rotation core print seat 3, on the sidewall of installation cavity 5, evenly be intervally distributed with mesh groove 6, bevel gear type boss 4 is engaged in the mesh groove 6, anti-rotation core print seat 3 is fixedly mounted in the middle part of float collar, at least one and the anti-rotation core beveled cone 7 with tapering is arranged in the outside of rubber plug body 1, by bevel gear type boss 4 is engaged on rubber plug body 1 is no longer rotated with drill bit, thereby play the anti-rotation effect.
Can according to actual needs above-mentioned cementing plug anti-rotation device be made further optimization and/or improvements:
Shown in accompanying drawing 1 to 7, the cross section top of bevel gear type boss 4 becomes smooth arc, the linear corner angle of cross section root of bevel gear type boss 4, the linear corner angle in the top of mesh groove 6, the root of mesh groove 6 becomes smooth arc, like this, be convenient to guiding, bevel gear type boss 4 can be entered in the mesh groove 6 smoothly and form engagement.
Shown in accompanying drawing 1 to 3, there is axially extending bore 8 at the middle part of anti-rotation core.
Shown in accompanying drawing 1,7, float collar comprises float collar body 9, valve head 10, valve seat, valve rod 11, compression spring 12 and holder 13; The valve seat of external diameter less than float collar body 9 internal diameters arranged in float collar body 9, valve seat comprises upper binding head 14, seal spool body 15 and lower union joint 16, upper binding head 14, seal spool body 15 and lower union joint 16 are fixed together from top to bottom, the outside, upper end of upper binding head 14 is fixed together by screw thread with the inboard, lower end of anti-rotation core print seat 3, seal spool body 15 is up-narrow and down-wide cone table, the outside of holder 13 is fixedly mounted in the lower end of lower union joint 16 by screw thread, there is installing hole at middle part at holder 13, the upper end of valve rod 11 is fixed with valve head 10, the lower end of valve rod 11 is positioned at installing hole, be equipped with in valve rod 11 outsides and can make valve head 10 withstand on compression spring 12 on seal spool body 15 medial surfaces, the upper end of compression spring 12 withstands on the bottom surface of valve head 10, the lower end of compression spring 12 is fixed on the holder 13, on the mount pad 13 in compression spring 13 outsides, cement paste discharge orifice 18 is arranged, at float collar body 9, valve seat, form installation cavity between the beveled cone 7 of anti-rotation core print seat 3 and rubber plug body 1 bottommost, in installation cavity, be installed with cement stone 19.
As accompanying drawing 1,2, shown in 3, mounting groove is arranged at the bottom of plug core 2, the anti-rotation core comprises installation head 20 and is the anti-rotary head 17 of taper type wide at the top and narrow at the bottom, the top of the bottom of installation head 20 and anti-rotary head 17 is fixed together, the external diameter of installation head 20 is less than anti-rotary head 17 top external diameters, installation head 20 is fixedly mounted in the mounting groove by screw thread, even from top to bottom fixed interval has bevel gear type boss 4 in the outside of anti-rotary head 17, there is axially extending bore 8 at the middle part of installation head 20 and anti-rotary head 17, like this, in the subsurface environment of complexity, can make its root gap pressure and ambient pressure balance, avoid damaging parts because of suppressing difference.
As shown in Figure 3, bevel gear type boss 4 is 9.
Above technical characterictic has constituted most preferred embodiment of the present invention, 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 most preferred embodiment of the present invention: when the present invention goes into the well use, float collar is connected with casing string, and with bunch tube one G.I.H at first, be pressed into the connector of rubber plug body 1, plug core 2 and anti-rotation core during well cementation, when cemented up slurry back replaces from cementing head, replace cement paste and arrive float collar place's bruising until connector.At this moment, 7 of the beveled cone bottom of the oblique cone portion of anti-rotation core and rubber plug body 1 are on the top of anti-rotation core print seat 3 and form bruising.Bevel gear type boss 4 is engaged on and forms engagement in the mesh groove 6, and like this, when boring the plug operation, rubber plug body 1 just no longer rotates with drill bit, plays the anti-rotation effect.
Claims (10)
1. a cementing plug anti-rotation device is characterized in that comprising rubber plug body, plug core, anti-rotation core, anti-rotation core print seat and float collar; The outside at the plug core is fixed with rubber plug body, be fixed with the anti-rotation core of the taper type that is wide at the top and narrow at the bottom in the bottom of plug core, even from top to bottom fixed interval has bevel gear type boss in the outside of anti-rotation core, the installation cavity that is taper type wide at the top and narrow at the bottom is arranged on the top of anti-rotation core print seat, on the sidewall of installation cavity, evenly be intervally distributed with mesh groove, bevel gear type boss is engaged in the mesh groove, the anti-rotation core print seat is fixedly mounted in the middle part of float collar, and at least one and the anti-rotation core beveled cone with tapering is arranged in the outside of rubber plug body.
2. cementing plug anti-rotation device according to claim 1, the cross section top that it is characterized in that bevel gear type boss becomes smooth arc, the linear corner angle of cross section root of bevel gear type boss, the linear corner angle in the top of mesh groove, the root of mesh groove becomes smooth arc.
3. cementing plug anti-rotation device according to claim 1 and 2 is characterized in that there is axially extending bore at the middle part of anti-rotation core.
4. cementing plug anti-rotation device according to claim 1 and 2 is characterized in that float collar comprises float collar body, valve head, valve seat, valve rod, compression spring and holder; The valve seat of external diameter less than float collar body internal diameter arranged in the float collar body, valve seat comprises upper binding head, seal spool body and lower union joint, upper binding head, seal spool body and lower union joint are fixed together from top to bottom, the outside, upper end of upper binding head is fixed together by screw thread with the inboard, lower end of anti-rotation core print seat, the seal spool body is up-narrow and down-wide cone table, the outside of holder is fixedly mounted in the lower end of lower union joint by screw thread, there is installing hole at middle part at holder, the upper end of valve rod is fixed with valve head, the lower end of valve rod is positioned at installing hole, be equipped with in the valve rod outside and can make valve head withstand on compression spring on the seal spool body medial surface, the upper end of compression spring withstands on the bottom surface of valve head, the lower end of compression spring is fixed on the holder, on the mount pad in the compression spring outside, the cement paste discharge orifice is arranged, at the float collar body, valve seat, form installation cavity between the beveled cone of anti-rotation core print seat and rubber plug body bottommost, in installation cavity, be installed with cement stone.
5. cementing plug anti-rotation device according to claim 3 is characterized in that float collar comprises float collar body, valve head, valve seat, valve rod, compression spring and holder; The valve seat of external diameter less than float collar body internal diameter arranged in the float collar body, valve seat comprises upper binding head, seal spool body and lower union joint, upper binding head, seal spool body and lower union joint are fixed together from top to bottom, the outside, upper end of upper binding head is fixed together by screw thread with the inboard, lower end of anti-rotation core print seat, the seal spool body is up-narrow and down-wide cone table, the outside of holder is fixedly mounted in the lower end of lower union joint by screw thread, there is installing hole at middle part at holder, the upper end of valve rod is fixed with valve head, the lower end of valve rod is positioned at installing hole, be equipped with in the valve rod outside and can make valve head withstand on compression spring on the seal spool body medial surface, the upper end of compression spring withstands on the bottom surface of valve head, the lower end of compression spring is fixed on the holder, on the mount pad in the compression spring outside, the cement paste discharge orifice is arranged, at the float collar body, valve seat, form installation cavity between the beveled cone of anti-rotation core print seat and rubber plug body bottommost, in installation cavity, be installed with cement stone.
6. cementing plug anti-rotation device according to claim 1 and 2, mounting groove is arranged at the bottom that it is characterized in that the plug core, the anti-rotation core comprises installation head and is the anti-rotary head of taper type wide at the top and narrow at the bottom, the bottom of installation head and the top of anti-rotary head are fixed together, the external diameter of installation head is less than anti-rotation crown portion external diameter, installation head is fixedly mounted in the mounting groove by screw thread, and even from top to bottom fixed interval has bevel gear type boss in the outside of anti-rotary head, and there is axially extending bore at the middle part of installation head and anti-rotary head.
7. cementing plug anti-rotation device according to claim 3, mounting groove is arranged at the bottom that it is characterized in that the plug core, the anti-rotation core comprises installation head and is the anti-rotary head of taper type wide at the top and narrow at the bottom, the bottom of installation head and the top of anti-rotary head are fixed together, the external diameter of installation head is less than anti-rotation crown portion external diameter, installation head is fixedly mounted in the mounting groove by screw thread, and even from top to bottom fixed interval has bevel gear type boss in the outside of anti-rotary head, and there is axially extending bore at the middle part of installation head and anti-rotary head.
8. cementing plug anti-rotation device according to claim 5, mounting groove is arranged at the bottom that it is characterized in that the plug core, the anti-rotation core comprises installation head and is the anti-rotary head of taper type wide at the top and narrow at the bottom, the bottom of installation head and the top of anti-rotary head are fixed together, the external diameter of installation head is less than anti-rotation crown portion external diameter, installation head is fixedly mounted in the mounting groove by screw thread, and even from top to bottom fixed interval has bevel gear type boss in the outside of anti-rotary head, and there is axially extending bore at the middle part of installation head and anti-rotary head.
9. cementing plug anti-rotation device according to claim 1 and 2 is characterized in that bevel gear type boss is 9.
10. cementing plug anti-rotation device according to claim 8 is characterized in that bevel gear type boss is 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105421846A CN101979822A (en) | 2010-11-13 | 2010-11-13 | Anti-rotation device for well cementing glue plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105421846A CN101979822A (en) | 2010-11-13 | 2010-11-13 | Anti-rotation device for well cementing glue plug |
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| Publication Number | Publication Date |
|---|---|
| CN101979822A true CN101979822A (en) | 2011-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105421846A Pending CN101979822A (en) | 2010-11-13 | 2010-11-13 | Anti-rotation device for well cementing glue plug |
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| CN (1) | CN101979822A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4190112A (en) * | 1978-09-11 | 1980-02-26 | Davis Carl A | Pump down wipe plug and cementing/drilling process |
| US5095980A (en) * | 1991-02-15 | 1992-03-17 | Halliburton Company | Non-rotating cementing plug with molded inserts |
| CN2235497Y (en) * | 1995-03-15 | 1996-09-18 | 胜利石油管理局钻井工艺研究院 | Device for forcing casing into borehole for quick drilling |
| CN200975231Y (en) * | 2006-12-02 | 2007-11-14 | 新疆石油管理局钻井工艺研究院 | Rotation preventing cementing plug |
| CN201851077U (en) * | 2010-11-13 | 2011-06-01 | 中国石油集团西部钻探工程有限公司 | Anti-rotation device of well cementing rubber stopper |
-
2010
- 2010-11-13 CN CN2010105421846A patent/CN101979822A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4190112A (en) * | 1978-09-11 | 1980-02-26 | Davis Carl A | Pump down wipe plug and cementing/drilling process |
| US5095980A (en) * | 1991-02-15 | 1992-03-17 | Halliburton Company | Non-rotating cementing plug with molded inserts |
| CN2235497Y (en) * | 1995-03-15 | 1996-09-18 | 胜利石油管理局钻井工艺研究院 | Device for forcing casing into borehole for quick drilling |
| CN200975231Y (en) * | 2006-12-02 | 2007-11-14 | 新疆石油管理局钻井工艺研究院 | Rotation preventing cementing plug |
| CN201851077U (en) * | 2010-11-13 | 2011-06-01 | 中国石油集团西部钻探工程有限公司 | Anti-rotation device of well cementing rubber stopper |
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Application publication date: 20110223 |