CN202850941U - Drilling-free-type grading cementing device - Google Patents

Drilling-free-type grading cementing device Download PDF

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Publication number
CN202850941U
CN202850941U CN 201220537843 CN201220537843U CN202850941U CN 202850941 U CN202850941 U CN 202850941U CN 201220537843 CN201220537843 CN 201220537843 CN 201220537843 U CN201220537843 U CN 201220537843U CN 202850941 U CN202850941 U CN 202850941U
Authority
CN
China
Prior art keywords
perforate
cementing
drilling
borehole jack
sealing ring
Prior art date
Application number
CN 201220537843
Other languages
Chinese (zh)
Inventor
柳文杨
林建增
Original Assignee
中国石油集团西部钻探工程有限公司
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Application filed by 中国石油集团西部钻探工程有限公司 filed Critical 中国石油集团西部钻探工程有限公司
Priority to CN 201220537843 priority Critical patent/CN202850941U/en
Application granted granted Critical
Publication of CN202850941U publication Critical patent/CN202850941U/en

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Abstract

The utility model relates to the technical field of oil-gas well cementing operations and provides a drilling-free-type grading cementing device which comprises a body. The upper end of the body and the lower end of the body are respectively provided with inner threads. The inner side of the upper portion of the body is fixedly provided with a hole-closing sleeve through a shear pin of the hole-closing sleeve. The rubber plug sleeve is fixedly placed on the inner side of the upper portion of the hole-closing sleeve through a shear pin of the rubber plug sleeve. The lower end of the rubber plug sleeve is fixed with a boss. The inner side of the lower portion of the body is fixed with a clamping table. The inner diameter of the clamping table is the same with that of the hole-closing sleeve. The drilling-free-type grading cementing device is rational and compact in structure and convenient to use. Because the shear pin of the hole-closing sleeve, the shear pin of the rubber plug sleeve, a shear pin of a hole-opening sleeve seat, a shear pin of a hole-opening sleeve and a back-stop ring are cooperatively used, the purpose that an inner structure does not need drilling out after hole opening, reliable hole closing and well cementing operations is achieved. The drilling-free-type grading cementing device has the advantages of being simple in structure, low in manufacturing cost, and capable of improving success rates of the operations, well cementing quality and production efficiency and reducing cost of well drilling and potential safety hazard.

Description

The drilling-free sizing hook-up for cementing

Technical field

The utility model relates to oil gas well cementing operation operation technique field, is a kind of drilling-free sizing hook-up for cementing.

Background technology

When oil gas field fraclional well cementing and half way well cementing operation, often owing to causing stage cementing device, the instrument reason can't close hole or hole, pass hypertonia, and common cementing device also needs to bore the internal construction of stage cementing device after well cementing operation is finished, go in the process of stage cementing device internal construction at brill, rotate for a long time drill bit same position in stage cementing device, so very easily the body of stage cementing device is caused damage and increased drilling cost.When boring internal construction in case the body of stage cementing device is damaged, perhaps stage cementing device does not effectively realize closing the hole in the work progress, to cause that whole tubing string can't seal in the Oil/gas Well, consequence generally can't be remedied, exploitation has caused and has seriously influenced to Oil/gas Well, even causes scrapping of whole mouthful of well.The well cementation multi-stage cementing tool that at present domestic and international oil gas field generally uses is common and needs brill remove the stage cementing device of internal construction, once someone developed the drilling-free sizing cementing device, but owing to result of use not good or complex structure, the too high large-scale promotion application of failing of price expense.

Summary of the invention

The utility model provides a kind of drilling-free sizing hook-up for cementing, has overcome the deficiency of above-mentioned prior art, and it can effectively solve existing apparatus because not good, the complex structure of result of use and the too high problem of price.

The technical solution of the utility model realizes by following measures: a kind of drilling-free sizing hook-up for cementing comprises body and perforate cover; There is internal thread lower end at body, upper inner at body fixedly mounts relevant borehole jack by closing the borehole jack shear pin, be installed with the plug cover in the upper inner of closing borehole jack by plug cover shear pin, lower end at the plug cover is fixed with boss, lower inside at body is fixed with Ka Tai, the internal diameter of Ka Tai is identical with the internal diameter that closes borehole jack, is installed with the perforate block set in the inboard of Ka Tai by perforate block set shear pin, and the perforate cover comprises that perforate body and perforate are pullover; The pullover lower end of the upper end of perforate body and perforate is fixed together, the upper inner of the lower outside of perforate body and perforate block set is fixedly installed togather by perforate cover shear pin, the pullover inboard, lower end of closing borehole jack that is sleeved on of perforate, body, close that borehole jack, perforate are pullover, form annular seal space between perforate body, perforate block set and the Ka Tai, in the hole that body has at least one to communicate with annular seal space.

The below is the further optimization and/or improvements to above-mentioned utility model technical scheme:

Above-mentioned upper inner at body can have retaining ring draw-in groove, and there is retaining ring mounting groove in the borehole jack outside, pass that is positioned at retaining ring draw-in groove top, in retaining ring mounting groove the retaining ring is installed.

Above-mentioned inboard, lower end at body can be installed with lower contact by screw thread, in the bottom of lower contact external screw thread is arranged.

Can there be internal thread or external screw thread in above-mentioned upper end at body.

Above-mentionedly between lower contact and body, sealing ring can be installed.

Above-mentionedly sealing ring can be installed closing between borehole jack and the body, between pass borehole jack and plug cover, sealing ring is installed, between perforate block set and Ka Tai, sealing ring is installed, between perforate block set and perforate body, sealing ring is installed, pullover and close between the borehole jack sealing ring is installed in perforate.

The utility model reasonable and compact in structure, easy to use, by closing being used in conjunction with of borehole jack shear pin, plug cover shear pin, perforate block set shear pin, perforate cover shear pin and retaining ring, realize perforate, reliably close the purpose that does not need to bore internal construction after hole and well cementing operation are finished, have simple in structure and characteristics low cost of manufacture, improved and be constructed into power, cementing quality and production efficiency, reduced drilling cost and potential safety hazard.

Description of drawings

Accompanying drawing 1 is looked the half section structural representation for the master of the utility model most preferred embodiment.

Coding in the accompanying drawing is respectively: 1 is body, and 2 for closing the borehole jack shear pin, and 3 for closing borehole jack, 4 are plug cover shear pin, and 5 is the plug cover, and 6 is boss, 7 is Ka Tai, and 8 are perforate block set shear pin, and 9 are the perforate block set, 10 are the perforate body, and 11 is pullover for perforate, and 12 are perforate cover shear pin, 13 is annular seal space, and 14 is the hole, and 15 is retaining ring draw-in groove, 16 is the retaining ring, and 17 are lower contact, and 18 is sealing ring.

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.

In the utility model, 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 relationship of forward and backward, 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 Figure 1, this drilling-free sizing hook-up for cementing comprises body 1 and perforate cover; There is internal thread lower end at body 1, upper inner at body 1 fixedly mounts relevant borehole jack 3 by closing borehole jack shear pin 2, be installed with plug cover 5 in the upper inner of closing borehole jack 3 by plug cover shear pin 4, lower end at plug cover 5 is fixed with boss 6, lower inside at body 1 is fixed with card platform 7, the internal diameter of card platform 7 is identical with the internal diameter that closes borehole jack 3, is installed with perforate block set 9 in the inboard of card platform 7 by perforate block set shear pin 8, and the perforate cover comprises perforate body 10 and perforate pullover 11; The lower end of the upper end of perforate body 10 and perforate pullover 11 is fixed together, the upper inner of the lower outside of perforate body 10 and perforate block set 9 is fixedly installed togather by perforate cover shear pin 12, it is inboard that perforate pullover 11 is sleeved on the lower end of closing borehole jack 3, body 1, close that borehole jack 3, perforate are pullover 11, form annular seal space 13 between perforate body 10, perforate block set 9 and the Ka Tai 7, in the hole 14 that body 1 has at least one to communicate with annular seal space 13.

Can according to actual needs, above-mentioned drilling-free sizing hook-up for cementing be made further optimization and/or improvements:

As shown in Figure 1, in the upper inner of body 1 retaining ring draw-in groove 15 is arranged, there is retaining ring mounting groove in pass borehole jack 3 outsides that are positioned at retaining ring draw-in groove 15 tops, in retaining ring mounting groove retaining ring 16 are installed.Like this, after being convenient to close hole 14 and finishing, thereby retaining ring 16 is stuck in and has stoped borehole jack 3 inverted runnings in pass in the retaining ring draw-in groove 15, realizes reliable purpose of closing hole 14.

As shown in Figure 1, be installed with lower contact 17 in the inboard, lower end of body 1 by screw thread, in the bottom of lower contact 17 external screw thread arranged.Like this, be convenient to installation and removal between lower contact 17 and the body 1.

As shown in Figure 1, in the upper end of body 1 internal thread or external screw thread are arranged.Like this, internal thread or external screw thread are convenient to installation and removal.

As shown in Figure 1, between lower contact 17 and body 1, sealing ring 18 is installed.Like this, sealing ring 18 is convenient to the sealing between lower contact 17 and the body 1.

As shown in Figure 1, between pass borehole jack 3 and body 1, sealing ring 18 is installed, between pass borehole jack 3 and plug cover 5, sealing ring 18 is installed, between perforate block set 9 and Ka Tai 7, sealing ring 18 is installed, between perforate block set 9 and perforate body 10, sealing ring 18 is installed, between perforate pullover 11 and pass borehole jack 3, sealing ring 18 is installed.Like this, sealing ring 18 is convenient to keep sealing.

Above technical characterictic has consisted of 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, satisfies the demand of different situations.

The use procedure of the utility model most preferred embodiment: during use, bottom and the sleeve pipe of lower contact 17 is fixedly installed togather; Perforate 14 operations: be pressed into flexible plugs after the one-level cement paste has been annotated, depress flexible plugs with tamponade liquid small displacement first, when treating that flexible plugs is passed through the utility model inside, reduce discharge capacity, prevent that flexible plugs from breaking the utility model internal construction or in advance perforate 14, after flexible plugs is passed through the utility model, recover discharge capacity and replace until the one-level bruising; After the one-level cementing operation finishes, cutout is normal, pressurize by well head, when treating that pressure reaches the setup pressure value of perforate cover shear pin 12 and cut off perforate cover shear pin 12, perforate body 10 and perforate pullover 11 is displaced downwardly to perforate pullover 11 and is stuck on the upper surface of perforate block set 9 under hydraulic action, finishes perforate 14 operations; Close hole 14 operations: behind the secondary cemented up, be pressed into shut-off plug, when shut-off plug arrives position, upper surface of the present utility model, falling discharge capacity replaces, in order to make shut-off plug safety enter smoothly plug cover 5 interior also seats on boss 6, being forced into pressure pressure and having reached the setting pressure of closing borehole jack shear pin 2 cuts off pass borehole jack shear pin 2, close borehole jack 3, plug cover 5 and shut-off plug come downwards to together on the upper surface that the lower surface of closing borehole jack 3 is pressed in card platform 7 hole 14 are closed, thereby retaining ring 16 just is stuck in and has stoped borehole jack 3 inverted runnings in pass in the retaining ring draw-in groove 15 at this moment, realizes reliable hole 14 operations of closing.After closing hole 14 ends of job, well head continues pressurization, when making pressure reach the setting pressure of plug cover shear pin 4 and perforate block set shear pin 8, cut off plug cover shear pin 4 and perforate block set shear pin 8, plug cover 5, shut-off plug, perforate are pullover 11, perforate body 10 and perforate block set 9 are displaced downwardly to flexible plug tip position together, and this moment, internal diameter of the present utility model was identical with casing inner diameter.

Claims (10)

1. a drilling-free sizing hook-up for cementing is characterized in that comprising body and perforate cover; There is internal thread lower end at body, upper inner at body fixedly mounts relevant borehole jack by closing the borehole jack shear pin, be installed with the plug cover in the upper inner of closing borehole jack by plug cover shear pin, lower end at the plug cover is fixed with boss, lower inside at body is fixed with Ka Tai, the internal diameter of Ka Tai is identical with the internal diameter that closes borehole jack, is installed with the perforate block set in the inboard of Ka Tai by perforate block set shear pin, and the perforate cover comprises that perforate body and perforate are pullover; The pullover lower end of the upper end of perforate body and perforate is fixed together, the upper inner of the lower outside of perforate body and perforate block set is fixedly installed togather by perforate cover shear pin, the pullover inboard, lower end of closing borehole jack that is sleeved on of perforate, body, close that borehole jack, perforate are pullover, form annular seal space between perforate body, perforate block set and the Ka Tai, in the hole that body has at least one to communicate with annular seal space.
2. drilling-free sizing hook-up for cementing according to claim 1 is characterized in that the upper inner of body has retaining ring draw-in groove, and there is retaining ring mounting groove in the borehole jack outside, pass that is positioned at retaining ring draw-in groove top, in retaining ring mounting groove the retaining ring is installed.
3. drilling-free sizing hook-up for cementing according to claim 1 and 2 is characterized in that the inboard, lower end of body is installed with lower contact by screw thread, in the bottom of lower contact external screw thread is arranged.
4. drilling-free sizing hook-up for cementing according to claim 1 and 2 is characterized in that there are internal thread or external screw thread in the upper end of body.
5. drilling-free sizing hook-up for cementing according to claim 3 is characterized in that there are internal thread or external screw thread in the upper end of body.
6. drilling-free sizing hook-up for cementing according to claim 3 is characterized in that between lower contact and the body sealing ring being installed.
7. drilling-free sizing hook-up for cementing according to claim 4 is characterized in that between lower contact and the body sealing ring being installed.
8. drilling-free sizing hook-up for cementing according to claim 5 is characterized in that between lower contact and the body sealing ring being installed.
9. drilling-free sizing hook-up for cementing according to claim 1 and 2, it is characterized in that closing between borehole jack and the body sealing ring is installed, between pass borehole jack and plug cover, sealing ring is installed, between perforate block set and Ka Tai, sealing ring is installed, between perforate block set and perforate body, sealing ring is installed, pullover and close between the borehole jack sealing ring is installed in perforate.
10. drilling-free sizing hook-up for cementing according to claim 8, it is characterized in that closing between borehole jack and the body sealing ring is installed, between pass borehole jack and plug cover, sealing ring is installed, between perforate block set and Ka Tai, sealing ring is installed, between perforate block set and perforate body, sealing ring is installed, pullover and close between the borehole jack sealing ring is installed in perforate.
CN 201220537843 2012-10-21 2012-10-21 Drilling-free-type grading cementing device CN202850941U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220537843 CN202850941U (en) 2012-10-21 2012-10-21 Drilling-free-type grading cementing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220537843 CN202850941U (en) 2012-10-21 2012-10-21 Drilling-free-type grading cementing device

Publications (1)

Publication Number Publication Date
CN202850941U true CN202850941U (en) 2013-04-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220537843 CN202850941U (en) 2012-10-21 2012-10-21 Drilling-free-type grading cementing device

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104234659A (en) * 2013-06-18 2014-12-24 中国石油天然气股份有限公司 Drilling-free classification well cementation device
CN104405334A (en) * 2014-10-30 2015-03-11 中国石油天然气集团公司 Stage cementer
CN104653149A (en) * 2014-12-31 2015-05-27 天津安东石油机械制造有限公司 Oil-gas well gas-seal stage collar and assembly method thereof
CN104895523A (en) * 2015-05-12 2015-09-09 中国石油天然气集团公司 Drilling-plug-free stage cementing device for full hole completion
CN104895527A (en) * 2015-05-12 2015-09-09 中国石油天然气集团公司 Drilling-plug-free cementing device for full hole completion

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104234659A (en) * 2013-06-18 2014-12-24 中国石油天然气股份有限公司 Drilling-free classification well cementation device
CN104234659B (en) * 2013-06-18 2016-12-28 中国石油天然气股份有限公司 Exempt to bore fraclional well cementing device
CN104405334A (en) * 2014-10-30 2015-03-11 中国石油天然气集团公司 Stage cementer
CN104653149A (en) * 2014-12-31 2015-05-27 天津安东石油机械制造有限公司 Oil-gas well gas-seal stage collar and assembly method thereof
CN104895523A (en) * 2015-05-12 2015-09-09 中国石油天然气集团公司 Drilling-plug-free stage cementing device for full hole completion
CN104895527A (en) * 2015-05-12 2015-09-09 中国石油天然气集团公司 Drilling-plug-free cementing device for full hole completion

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