CN203742545U - Combined drill pipe rubber plug - Google Patents

Combined drill pipe rubber plug Download PDF

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Publication number
CN203742545U
CN203742545U CN201420056962.4U CN201420056962U CN203742545U CN 203742545 U CN203742545 U CN 203742545U CN 201420056962 U CN201420056962 U CN 201420056962U CN 203742545 U CN203742545 U CN 203742545U
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CN
China
Prior art keywords
erection column
installation cavity
mounting head
over sub
screw thread
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Active
Application number
CN201420056962.4U
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Chinese (zh)
Inventor
穆总结
高本文
李晓军
李富强
郑义平
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CNPC Xibu Drilling Engineering Co Ltd
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CNPC Xibu Drilling Engineering Co Ltd
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Priority to CN201420056962.4U priority Critical patent/CN203742545U/en
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Abstract

The utility model relates to the technical field of down-hole operation sealing and separating devices, in particular to a combined drill pipe rubber plug. The combined drill pipe rubber plug comprises a first conversion pup joint, a second installation column, a second conversion pup joint, a third installation column, a seal pup joint, a first installation column, a guide head, a first installation column and an installation cylinder; the upper end of the first conversion pup joint, the upper end of the second installation column, the upper end of the second conversion pup joint, the upper end of the third installation column and the upper end and the lower end of the seal pup joint are respectively provided with an axial installation cavity, and the lower end of the first installation column, the lower end of the first conversion pup joint, the lower end of the second installation column, the lower end of the second conversion pup joint, the lower end of the third installation column and the upper end of the guide head are respectively and fixedly provided with an installation head in an integrated mode. The combined drill pipe rubber plug is reasonable and compact in structure and convenient to use, two-stage rubber plugs are arranged, the two-stage rubber plugs are separated through a ground pressure-building hydraulic cylinder, requirements of drill pipes with different inner diameters are met, a well completion process is simplified, well completion efficiency is improved, and therefore effective implementation of down-hole well completion work is guaranteed.

Description

Composite drill rod plug
Technical field
the utility model relates to underground work packing device technical field, is a kind of composite drill rod plug.
Background technology
completion practice is the important technical that is connected drilling well and oil producing operation, and meanwhile, completion is again the great underground work of risk, and therefore, the success or not of completion practice, will directly cause the success or failure of a bite well.Particularly current, along with deepening continuously of shale gas, the unconventional exploration of oil and gas field of fine and close wet goods, people for the research of carrying out such Reservoir Development also in continuous reinforcement.Plug is the important tool in Completion Operations, and conventional plug only has one-level, after running into the drilling rod of reducing, need constantly be lowered to, propose different plugs, causes current drilling rod plug service efficiency low.
Summary of the invention
the utility model provides a kind of composite drill rod plug, has overcome the deficiency of above-mentioned prior art, and it can effectively solve the low problem of existing drilling rod plug service efficiency.
the technical solution of the utility model realizes by following measures: a kind of composite drill rod plug, comprises the first cross-over sub, the second erection column, the second cross-over sub, the 3rd erection column, Sealing, the first erection column, seeker and mounting cylinder, there is respectively axial installation cavity the upper end of the upper end of the upper end of the first cross-over sub, the second erection column, the second cross-over sub, the 3rd upper end of erection column and the top and bottom of Sealing, and the lower end of the lower end of the lower end of the first erection column, the first cross-over sub, the lower end of the second erection column, the second cross-over sub, the 3rd lower end of erection column and the upper end of seeker respectively one are fixed with mounting head, the upper end sidewall of the first erection column is fixedly installed togather by the shear pin of at least two and the lower end inwall of mounting cylinder along circumference, the mounting head of the first erection column lower end is fixedly mounted in the installation cavity of the first cross-over sub upper end, the mounting head of the first cross-over sub lower end is fixedly mounted in the installation cavity of the second erection column upper end, the mounting head of the second erection column lower end is fixedly mounted in the installation cavity of the second cross-over sub upper end, the mounting head of the second cross-over sub lower end is fixedly mounted in the installation cavity of the 3rd erection column upper end, the mounting head of the 3rd erection column lower end is fixedly mounted in the installation cavity of Sealing upper end, the mounting head of seeker upper end is fixedly mounted in the installation cavity of Sealing lower end, the external diameter of the first cross-over sub is greater than respectively the external diameter of the first erection column and the second erection column, the external diameter of the second cross-over sub is greater than respectively the external diameter of the second erection column and the 3rd erection column, on the outer wall of mounting cylinder, sulfuration has one-level plug, primary amine beyond the Great Wall from top to bottom one be fixed with at least three circle the one-level plug wings, at the first erection column, on the second erection column and the 3rd erection column, sulfuration has secondary plug respectively, on secondary plug, one is fixed with the secondary plug wing, the external diameter of the one-level plug wing is greater than the external diameter of the secondary plug wing, on the lower end outer wall of Sealing, there is step-like installation annular groove, in annular groove is installed, retaining ring is installed, the lower end of seeker is up big and down small hemispherical.
the further optimization and/or improvements to above-mentioned utility model technical scheme below:
the above-mentioned nine road radial grooves that are distributed with successively from top to bottom on the outer wall of mounting cylinder, on corresponding one-level plug inwall, one is fixed with nine road plug bulge loops, on the outer wall of the first erection column, the second erection column and the 3rd erection column, be distributed with successively respectively three road radial grooves from top to bottom, on corresponding secondary plug inwall, one is fixed with three road plug bulge loops, and plug bulge loop is positioned at radial groove.
along circumference, the lower end inwall by eight shear pins and mounting cylinder is fixedly installed togather the upper end sidewall of above-mentioned the first erection column.
the above-mentioned two seals circle that is installed with from top to bottom on the outer wall of Sealing.
the mounting head of above-mentioned the first erection column lower end is fixedly mounted in the installation cavity of the first cross-over sub upper end by screw thread, the mounting head of the first cross-over sub lower end is fixedly mounted in the installation cavity of the second erection column upper end by screw thread, the mounting head of the second erection column lower end is fixedly mounted in the installation cavity of the second cross-over sub upper end by screw thread, the mounting head of the second cross-over sub lower end is fixedly mounted in the installation cavity of the 3rd erection column upper end by screw thread, the mounting head of the 3rd erection column lower end is fixedly mounted in the installation cavity of Sealing upper end by screw thread, the mounting head of seeker upper end is fixedly mounted in the installation cavity of Sealing lower end by screw thread.
the utility model reasonable and compact in structure, easy to use, by being provided with two-stage plug, by the ground fluid cylinder that builds the pressure, make two-stage plug separated, meet the demand of different inner diameters drilling rod, simplified Completion Operations, improve completion efficiency, thereby guaranteed effective enforcement of down-hole completion practice.
Accompanying drawing explanation
accompanying drawing 1 is looked half section structural representation for the master of the utility model most preferred embodiment.
accompanying drawing 2 is that the A-A of accompanying drawing 1 is to sectional structure schematic diagram.
accompanying drawing 3 is the perspective view of retaining ring in accompanying drawing 1.
coding in accompanying drawing is respectively: 1 is the first cross-over sub, and 2 is the second erection column, and 3 is the second cross-over sub, and 4 is the 3rd erection column, 5 is Sealing, and 6 is the first erection column, and 7 is seeker, and 8 is mounting cylinder, 9 is installation cavity, and 10 is mounting head, and 11 is shear pin, 12 is one-level plug, and 13 is the one-level plug wing, and 14 is secondary plug, 15 is the secondary plug wing, and 16 for installing annular groove, and 17 is retaining ring, 18 is radial groove, and 19 is plug bulge loop, and 20 is sealing ring.
The specific embodiment
the utility model is not subject to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is to be all described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in accompanying drawing 1,2,3, this composite drill rod plug comprises the first cross-over sub 1, the second erection column 2, the second cross-over sub 3, the 3rd erection column 4, Sealing 5, the first erection column 6, seeker 7 and mounting cylinder 8, the top and bottom of the upper end of the upper end of the upper end of the upper end of the first cross-over sub 1, the second erection column 2, the second cross-over sub 3, the 3rd erection column 4 and Sealing 5 have respectively the lower end of axial installation cavity 9, the first erection columns 6, the lower end of the lower end of the first cross-over sub 1, the second erection column 2, the lower end of the lower end of the second cross-over sub 3, the 3rd erection column 4 and the upper end of seeker 7 respectively one be fixed with mounting head 10, along circumference, the shear pin 11 by least two is fixedly installed togather with the lower end inwall of mounting cylinder 8 the upper end sidewall of the first erection column 6, the mounting head 10 of the first erection column 6 lower ends is fixedly mounted in the installation cavity 9 of the first cross-over sub 1 upper end, the mounting head 10 of the first cross-over sub 1 lower end is fixedly mounted in the installation cavity 9 of the second erection column 2 upper ends, the mounting head 10 of the second erection column 2 lower ends is fixedly mounted in the installation cavity 9 of the second cross-over sub 3 upper ends, the mounting head 10 of the second cross-over sub 3 lower ends is fixedly mounted in the installation cavity 9 of the 3rd erection column 4 upper ends, the mounting head 10 of the 3rd erection column 4 lower ends is fixedly mounted in the installation cavity 9 of Sealing 5 upper ends, the mounting head 10 of seeker 7 upper ends is fixedly mounted in the installation cavity 9 of Sealing 5 lower ends, the external diameter of the first cross-over sub 1 is greater than respectively the external diameter of the first erection column 6 and the second erection column 2, the external diameter of the second cross-over sub 3 is greater than respectively the external diameter of the second erection column 2 and the 3rd erection column 4, on the outer wall of mounting cylinder 8, sulfuration has one-level plug 12, on one-level plug 12, one is fixed with at least three one-level plug wings 13 that enclose from top to bottom, at the first erection column 6, on the second erection column 2 and the 3rd erection column 4, sulfuration has secondary plug 14 respectively, on secondary plug 14, one is fixed with the secondary plug wing 15, the external diameter of the one-level plug wing 13 is greater than the external diameter of the secondary plug wing 15, on the lower end outer wall of Sealing 5, there is step-like installation annular groove 16, in annular groove 16 is installed, retaining ring 17 is installed, the lower end of seeker 7 is up big and down small hemispherical.After one-level plug 12 and the one-level plug wing put in place for 13 times, continue to suppress, cut off shear pin 11, secondary plug 14 and the secondary plug wing 15 continues descending, and retaining ring 17 can prevent from uply after secondary plug 14 and the secondary plug wing put in place for 15 times causing hanging packing inefficacy.
can according to actual needs, above-mentioned composite drill rod plug be made further optimization and/or improvements:
as shown in Figure 1, on the outer wall of mounting cylinder 8, be distributed with successively nine road radial grooves 18 from top to bottom, on corresponding one-level plug 12 inwalls, one is fixed with nine road plug bulge loops 19, on the outer wall of the first erection column 6, the second erection column 2 and the 3rd erection column 4, be distributed with successively respectively three road radial grooves 18 from top to bottom, on corresponding secondary plug 14 inwalls, one is fixed with three road plug bulge loops 19, and plug bulge loop 19 is positioned at radial groove 18.The cooperation of radial groove 18 and plug bulge loop 19 makes under pressure, and one-level plug 12 is unlikely to depart from mounting cylinder 8, secondary plug 14 is unlikely to depart from the first erection column 6, the second erection column 2 and the 3rd erection column 4.
as shown in Figure 1, the upper end sidewall of the first erection column 6 is fixedly installed togather by eight shear pins 11 and the lower end inwall of mounting cylinder 8 along circumference.
as shown in Figure 1, on the outer wall of Sealing 5, be installed with two seals circle 20 from top to bottom.Sealing ring 20 can be realized better sealing effectiveness.
as shown in Figure 1, the mounting head 10 of the first erection column 6 lower ends is fixedly mounted in the installation cavity 9 of the first cross-over sub 1 upper end by screw thread, the mounting head 10 of the first cross-over sub 1 lower end is fixedly mounted in the installation cavity 9 of the second erection column 2 upper ends by screw thread, the mounting head 10 of the second erection column 2 lower ends is fixedly mounted in the installation cavity 9 of the second cross-over sub 3 upper ends by screw thread, the mounting head 10 of the second cross-over sub 3 lower ends is fixedly mounted in the installation cavity 9 of the 3rd erection column 4 upper ends by screw thread, the mounting head 10 of the 3rd erection column 4 lower ends is fixedly mounted in the installation cavity 9 of Sealing 5 upper ends by screw thread, the mounting head 10 of seeker 7 upper ends is fixedly mounted in the installation cavity 9 of Sealing 5 lower ends by screw thread.Be threaded and facilitate installation and removal.
after one-level plug 12 and the one-level plug wing put in place for 13 times, continue to suppress, cut off shear pin 11, secondary plug 14 and the secondary plug wing 15 continues descending, and retaining ring 17 can prevent from uply after secondary plug 14 and the secondary plug wing put in place for 15 times causing hanging packing inefficacy.The utility model is provided with two-stage plug, by the ground fluid cylinder that builds the pressure, makes two-stage plug separated, meets the demand of different inner diameters drilling rod, has simplified Completion Operations, has improved completion efficiency, thereby has guaranteed effective enforcement of down-hole completion practice.
above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.

Claims (9)

1. a composite drill rod plug, is characterized in that comprising the first cross-over sub, the second erection column, the second cross-over sub, the 3rd erection column, Sealing, the first erection column, seeker and mounting cylinder, there is respectively axial installation cavity the upper end of the upper end of the upper end of the first cross-over sub, the second erection column, the second cross-over sub, the 3rd upper end of erection column and the top and bottom of Sealing, and the lower end of the lower end of the lower end of the first erection column, the first cross-over sub, the lower end of the second erection column, the second cross-over sub, the 3rd lower end of erection column and the upper end of seeker respectively one are fixed with mounting head, the upper end sidewall of the first erection column is fixedly installed togather by the shear pin of at least two and the lower end inwall of mounting cylinder along circumference, the mounting head of the first erection column lower end is fixedly mounted in the installation cavity of the first cross-over sub upper end, the mounting head of the first cross-over sub lower end is fixedly mounted in the installation cavity of the second erection column upper end, the mounting head of the second erection column lower end is fixedly mounted in the installation cavity of the second cross-over sub upper end, the mounting head of the second cross-over sub lower end is fixedly mounted in the installation cavity of the 3rd erection column upper end, the mounting head of the 3rd erection column lower end is fixedly mounted in the installation cavity of Sealing upper end, the mounting head of seeker upper end is fixedly mounted in the installation cavity of Sealing lower end, the external diameter of the first cross-over sub is greater than respectively the external diameter of the first erection column and the second erection column, the external diameter of the second cross-over sub is greater than respectively the external diameter of the second erection column and the 3rd erection column, on the outer wall of mounting cylinder, sulfuration has one-level plug, primary amine beyond the Great Wall from top to bottom one be fixed with at least three circle the one-level plug wings, at the first erection column, on the second erection column and the 3rd erection column, sulfuration has secondary plug respectively, on secondary plug, one is fixed with the secondary plug wing, the external diameter of the one-level plug wing is greater than the external diameter of the secondary plug wing, on the lower end outer wall of Sealing, there is step-like installation annular groove, in annular groove is installed, retaining ring is installed, the lower end of seeker is up big and down small hemispherical.
2. composite drill rod plug according to claim 1, it is characterized in that being distributed with successively nine road radial grooves from top to bottom on the outer wall of mounting cylinder, on corresponding one-level plug inwall, one is fixed with nine road plug bulge loops, on the outer wall of the first erection column, the second erection column and the 3rd erection column, be distributed with successively respectively three road radial grooves from top to bottom, on corresponding secondary plug inwall, one is fixed with three road plug bulge loops, and plug bulge loop is positioned at radial groove.
3. composite drill rod plug according to claim 1 and 2, the lower end inwall by eight shear pins and mounting cylinder is fixedly installed togather along circumference to it is characterized in that the upper end sidewall of the first erection column.
4. composite drill rod plug according to claim 1 and 2, is characterized in that being installed with two seals circle on the outer wall of Sealing from top to bottom.
5. composite drill rod plug according to claim 3, is characterized in that being installed with two seals circle on the outer wall of Sealing from top to bottom.
6. composite drill rod plug according to claim 1 and 2, the mounting head that it is characterized in that the first erection column lower end is fixedly mounted in the installation cavity of the first cross-over sub upper end by screw thread, the mounting head of the first cross-over sub lower end is fixedly mounted in the installation cavity of the second erection column upper end by screw thread, the mounting head of the second erection column lower end is fixedly mounted in the installation cavity of the second cross-over sub upper end by screw thread, the mounting head of the second cross-over sub lower end is fixedly mounted in the installation cavity of the 3rd erection column upper end by screw thread, the mounting head of the 3rd erection column lower end is fixedly mounted in the installation cavity of Sealing upper end by screw thread, the mounting head of seeker upper end is fixedly mounted in the installation cavity of Sealing lower end by screw thread.
7. composite drill rod plug according to claim 3, the mounting head that it is characterized in that the first erection column lower end is fixedly mounted in the installation cavity of the first cross-over sub upper end by screw thread, the mounting head of the first cross-over sub lower end is fixedly mounted in the installation cavity of the second erection column upper end by screw thread, the mounting head of the second erection column lower end is fixedly mounted in the installation cavity of the second cross-over sub upper end by screw thread, the mounting head of the second cross-over sub lower end is fixedly mounted in the installation cavity of the 3rd erection column upper end by screw thread, the mounting head of the 3rd erection column lower end is fixedly mounted in the installation cavity of Sealing upper end by screw thread, the mounting head of seeker upper end is fixedly mounted in the installation cavity of Sealing lower end by screw thread.
8. composite drill rod plug according to claim 4, the mounting head that it is characterized in that the first erection column lower end is fixedly mounted in the installation cavity of the first cross-over sub upper end by screw thread, the mounting head of the first cross-over sub lower end is fixedly mounted in the installation cavity of the second erection column upper end by screw thread, the mounting head of the second erection column lower end is fixedly mounted in the installation cavity of the second cross-over sub upper end by screw thread, the mounting head of the second cross-over sub lower end is fixedly mounted in the installation cavity of the 3rd erection column upper end by screw thread, the mounting head of the 3rd erection column lower end is fixedly mounted in the installation cavity of Sealing upper end by screw thread, the mounting head of seeker upper end is fixedly mounted in the installation cavity of Sealing lower end by screw thread.
9. composite drill rod plug according to claim 5, the mounting head that it is characterized in that the first erection column lower end is fixedly mounted in the installation cavity of the first cross-over sub upper end by screw thread, the mounting head of the first cross-over sub lower end is fixedly mounted in the installation cavity of the second erection column upper end by screw thread, the mounting head of the second erection column lower end is fixedly mounted in the installation cavity of the second cross-over sub upper end by screw thread, the mounting head of the second cross-over sub lower end is fixedly mounted in the installation cavity of the 3rd erection column upper end by screw thread, the mounting head of the 3rd erection column lower end is fixedly mounted in the installation cavity of Sealing upper end by screw thread, the mounting head of seeker upper end is fixedly mounted in the installation cavity of Sealing lower end by screw thread.
CN201420056962.4U 2014-01-29 2014-01-29 Combined drill pipe rubber plug Active CN203742545U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420056962.4U CN203742545U (en) 2014-01-29 2014-01-29 Combined drill pipe rubber plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420056962.4U CN203742545U (en) 2014-01-29 2014-01-29 Combined drill pipe rubber plug

Publications (1)

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CN203742545U true CN203742545U (en) 2014-07-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104358542A (en) * 2014-11-10 2015-02-18 中国石油天然气集团公司 Compound rubber plug for well cementation
CN104481453A (en) * 2014-12-11 2015-04-01 中国石油天然气股份有限公司 Combined self-locking reducing rubber plug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104358542A (en) * 2014-11-10 2015-02-18 中国石油天然气集团公司 Compound rubber plug for well cementation
CN104481453A (en) * 2014-12-11 2015-04-01 中国石油天然气股份有限公司 Combined self-locking reducing rubber plug

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