CN105350941A - Push rod type indicating device and rubber plug falling indication cementing head - Google Patents
Push rod type indicating device and rubber plug falling indication cementing head Download PDFInfo
- Publication number
- CN105350941A CN105350941A CN201510877949.4A CN201510877949A CN105350941A CN 105350941 A CN105350941 A CN 105350941A CN 201510877949 A CN201510877949 A CN 201510877949A CN 105350941 A CN105350941 A CN 105350941A
- Authority
- CN
- China
- Prior art keywords
- push rod
- gland
- cementing head
- indicating device
- push
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000004907 gland Anatomy 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 8
- 229920002472 Starch Polymers 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 239000004568 cement Substances 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
- 208000034656 Contusions Diseases 0.000 description 6
- 238000005457 optimization Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention relates to the technical field of cementing tools, and provides a push rod type indicating device and a rubber plug falling indication cementing head. The push rod type indicating device comprises a gland with an upward opening, a push rod and a sleeve; the lower end of the gland is fixedly connected with the sleeve, the bottom of the gland is provided with an installation hole communicated with a cavity of the sleeve, the inner side of the lower end of the sleeve is integrally fixed with a baffle ring, and the outer side of the lower portion of the push rod is integrally fixed with an annular clamping block. According to the push rod type indicating device and the rubber plug downward indication cementing head, the structure is reasonable and compact, through matched usage of the push rod type indicating device, a cementing head body, a stop pin and a rubber plug, the purpose of judging whether the rubber plug falls or not by observing stretching out and retracting of the push rod when rubber plug pressing is performed in well cementing operation is achieved, and the serious problems that pressure bumping cannot be performed and a large number of cement plugs are reserved in the downhole due to the fact that the rubber pug cannot fall are prevented from occurring; the advantages of being safe and reliable is achieved, operation is facilitated, the well cementing construction success rate is increased, the well cementing quality is improved, and meanwhile the well cementing and repairing cost is greatly reduced.
Description
Technical field
the present invention relates to cementing tool class technical field, is a kind of push-down indicating device and the descending instruction cementing head of plug.
Background technology
cementing head is a kind of rig tool conventional in cementing operation, plays very important effect in well cementing process.Existing traditional cements head is in the process of well cementation bottom plug; usually cannot judge whether plug correctly falls; often there will be because backing pin do not open put in place or other reason and cause plug to fail to leave normally cementing head, thus cause and bruising and shaft bottom cannot stay the major accidents such as a large amount of ash plugs.
also the cementing head using and plug can be indicated descending is had at present both at home and abroad, cement paste easily enters in the cavity of indicator in the course of the work, indicator is easily caused to lose efficacy after remaining in the cement slurry sets in indicator cavity, cause plug to fail to leave cementing head normally, thus cause and bruising and shaft bottom cannot stay the major accidents such as a large amount of ash plugs; Indicate the descending cementing head of plug to there is complex structure, price expense too high and fail large-scale promotion application simultaneously.
Summary of the invention
the invention provides a kind of push-down indicating device and the descending instruction cementing head of plug, overcome the deficiency of above-mentioned prior art, it effectively can solve existing cementing head easily causes plug can not leave cementing head normally, causes and bruising and shaft bottom cannot stay the major accidents such as a large amount of ash plugs; Complex structure and the too high problem of price expense.
one of technical scheme of the present invention is realized by following measures: a kind of push-down indicating device, comprises opening up gland, push rod and body; Body is fixedly connected with in the lower end of gland, the installing hole be connected with body is provided with in the bottom of gland, integrally baffle ring is fixed with at the lower end inside of body, annular fixture block is integrally fixed with at the lower outside of push rod, the annular snap block of push rod body baffle ring on, the bottom of push rod is positioned at outside body, and the upper end of push rod is positioned at the installing hole of gland, is positioned on the push rod above the annular fixture block of body and is provided with Compress Spring.
here is the further optimization and/or improvements to one of foregoing invention technical scheme:
above-mentioned push rod is the thick push rod in the thin bottom in top and middle part.
the above-mentioned arranged outside at gland has external screw thread.
the above-mentioned lower end outside at gland is provided with the first cannelure.
the above-mentioned top at gland is provided with at least one force hole; Or/and be provided with body mounting groove on the bottom face of gland, the upper end of body is welded in body mounting groove; Or/and, between baffle ring and push rod, sealing ring is installed.
two of technical scheme of the present invention is realized by following measures: a kind ofly use the descending instruction cementing head of the plug of push-down indicating device, comprises push-down indicating device and cementing head body; Be fixedly installed togather inside the lower outside of gland and the upper end of cementing head body, be provided with replacing of being connected with the cavity of cementing head body on the top of cementing head body and starch hole, backing pin is installed with at the middle part of cementing head body, plug is had in the cavity of cementing head body, plug seat on backing pin and for slurry hole and backing pin between, the lower end of push rod is pressed on plug.
here is the further optimization and/or improvements to foregoing invention technical scheme two:
above-mentionedly inside the upper end of cementing head body, be provided with the second cannelure, the inwall of the second cannelure is provided with internal thread, the bottom of gland is fixedly mounted in the second cannelure of cementing head body by screw thread, and the upper surface of the first cannelure is pressed on the bottom face of the second cannelure.
between the above-mentioned lower end at gland and cementing head body, sealing ring is installed.
reasonable and compact in structure of the present invention, by push-down indicating device, cementing head body, backing pin and plug with the use of, when realizing well cementing operation moulding plug, by observing stretching out and retraction of push rod, judge the object whether plug falls, avoid plug and fail descending and cause and bruising and shaft bottom cannot leave the generation of the major accidents such as a large amount of ash plugs; There is safe and reliable feature, facilitate operation, improve cementing operation success rate and cementing quality, considerably reduce well cementation workover cost simultaneously.
Accompanying drawing explanation
accompanying drawing 1 is that the master of push-down indicating device of the present invention is depending on analysing and observe structure for amplifying schematic diagram.
accompanying drawing 2 is the original state schematic diagram that the descending instruction cementing head of plug of the present invention is fixedly mounted on sleeve pipe.
accompanying drawing 3 is the plug downstream state schematic diagram that the descending instruction cementing head of plug of the present invention is fixedly mounted on sleeve pipe.
coding in accompanying drawing is respectively: 1 is gland, and 2 is push rod, and 3 is body, and 4 is baffle ring, and 5 is annular fixture block, 6 is Compress Spring, and 7 is the first cannelure, and 8 is force hole, and 9 is sealing ring, and 10 is cementing head body, 11 for replacing slurry hole, and 12 is backing pin, and 13 is plug, and 14 is the second cannelure, and 15 is sleeve pipe.
Detailed description of the invention
the present invention by the restriction of following embodiment, can not 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 is all be described according to the Butut mode of Figure of description 1, as: the position relationship of forward and backward, upper and lower, left and right etc. determines according to the Butut direction of Figure of description 1.
below in conjunction with embodiment and accompanying drawing, the invention will be further described:
embodiment 1, as shown in accompanying drawing 1,2,3, this push-down indicating device comprises opening up gland 1, push rod 2 and body 3; Body 3 is fixedly connected with in the lower end of gland 1, the installing hole be connected with body 3 is provided with in the bottom of gland 1, baffle ring 4 is integrally fixed with at the lower end inside of body 3, annular fixture block 5 is integrally fixed with at the lower outside of push rod 2, the annular fixture block 5 of push rod 2 body 3 baffle ring 4 on, the bottom of push rod 2 is positioned at outside body 3, and the upper end of push rod 2 is positioned at the installing hole of gland 1, is positioned on the push rod 2 above the annular fixture block 5 of body 3 and is provided with Compress Spring 6.Like this, under normal circumstances, in the raw, the lower end of Compress Spring 6 can contact with annular fixture block 5 Compress Spring 6, and the upper end of Compress Spring 6 can contact with gland 1.
according to actual needs, above-described embodiment 1 can be made further optimization and/or improvements:
as shown in accompanying drawing 1,2,3, push rod 2 is the thick push rod in the thin bottom in top and middle part.
as shown in accompanying drawing 1,2,3, there is external screw thread in the arranged outside of gland 1.Like this, external screw thread is convenient to the installation and removal of gland 1.
as shown in accompanying drawing 1,2,3, the lower end outside of gland 1 is provided with the first cannelure 7.Like this, the first cannelure 7 is convenient to install.
as shown in accompanying drawing 1,2,3, be provided with at least one force hole 8 on the top of gland 1; Or/and be provided with body mounting groove on the bottom face of gland 1, the upper end of body 3 is welded in body mounting groove; Or/and, sealing ring 9 is installed between baffle ring 4 and push rod 2.Like this, be convenient to exert a force to gland 1 in force hole 8; The upper end of body 3 is welded in body mounting groove, and what gland 1 was connected with body 3 is more firm; Sealing ring 9 is convenient to better seal between baffle ring 4 and push rod 2.
embodiment 2, as shown in Figure 2, the descending instruction cementing head of plug of this use push-down indicating device, comprises push-down indicating device and cementing head body 10; Be fixedly installed togather inside the lower outside of gland 1 and the upper end of cementing head body 10, be provided with replacing of being connected with the cavity of cementing head body 10 on the top of cementing head body 10 and starch hole 11, backing pin 12 is installed with at the middle part of cementing head body 10, plug 13 is had in the cavity of cementing head body 10, plug 13 on backing pin 12 and for slurry hole 11 and backing pin 12 between, the lower end of push rod 2 is pressed on plug 13.Cementing head body 10, backing pin 12 and plug 13 are prior art; By push-down indicating device, cementing head body 10 and backing pin 12 and plug 13, when well cementing operation moulding plug 13, by observing stretching out and retraction of push rod 2, judge whether plug 13 falls, thus avoid plug 13 and fail descending and cause and bruising and shaft bottom cannot leave the generation of the major accidents such as a large amount of ash plugs; There is safe and reliable feature, facilitate operation, improve cementing operation success rate and cementing quality, considerably reduce well cementation workover cost simultaneously.
according to actual needs, above-described embodiment 2 can be made further optimization and/or improvements:
as shown in accompanying drawing 2,3, the second cannelure 14 is provided with inside the upper end of cementing head body 10, the inwall of the second cannelure 14 is provided with internal thread, the bottom of gland 1 is fixedly mounted in the second cannelure 14 of cementing head body 10 by screw thread, and the upper surface of the first cannelure 7 is pressed on the bottom face of the second cannelure 14.Like this, the first cannelure 7 and the second cannelure 14 are convenient to the installation between cementing head body 10 and gland 1, play effect that is spacing and sealing.
as shown in accompanying drawing 2,3, sealing ring 9 is installed between the lower end of gland 1 and cementing head body 10.Like this, sealing ring 9 plays better sealing effectiveness.
above technical characteristic constitutes embodiments of the invention, and it has stronger compliance and implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
the use procedure of the embodiment of the present invention: during use, descending for plug of the present invention instruction cementing head is fixedly mounted on sleeve pipe 15, during well cementation, close the shelves pin on cementing head body 10, plug 13 is placed in cementing head body 10, make plug 13 on shelves pin, then push-down indicating device is fixedly mounted on cementing head body 10, the lower end of push rod 2 is pressed on plug 13, push rod 2 makes the top of push rod 2 through the installing hole on gland 1 by the thrust of plug 13 and stretches out gland 1, Compress Spring 6 is pressed on the annular fixture block 5 on gland 1 and push rod 2 in compression shape, represent that plug 13 is positioned at cementing head body 10 and does not fall, well cementation cemented up slurry, when preparing for slurry, open the shelves pin on cementing head body 10, highly pressurised liquid is pumped into by the slurry hole 11 of replacing on cementing head body 10, it is descending that highly pressurised liquid promotes plug 13, now, push rod 2 lower end loses the thrust of plug 13, promote push rod 2 because of the effect by the Compress Spring 6 in compression shape to move down, now being viewed as push rod 2 from outside retracts in gland 1, show that plug 13 leaves origin-location, fall, in like manner, if because other reason causes plug 13 not fall, then push rod 2 stretches out in gland 1, so, just can judge whether plug 13 falls, plug 13 is avoided to fail descending and cause and bruising and shaft bottom cannot leave the generation of the major accidents such as a large amount of ash plugs.
Claims (10)
1. a push-down indicating device, is characterized in that comprising opening up gland, push rod and body; Body is fixedly connected with in the lower end of gland, the installing hole be connected with body is provided with in the bottom of gland, integrally baffle ring is fixed with at the lower end inside of body, annular fixture block is integrally fixed with at the lower outside of push rod, the annular snap block of push rod body baffle ring on, the bottom of push rod is positioned at outside body, and the upper end of push rod is positioned at the installing hole of gland, is positioned on the push rod above the annular fixture block of body and is provided with Compress Spring.
2. push-down indicating device according to claim 1, is characterized in that push rod is the thick push rod in the thin bottom in top and middle part.
3. push-down indicating device according to claim 1 and 2, is characterized in that the arranged outside of gland has external screw thread.
4. push-down indicating device according to claim 1 and 2, is characterized in that the lower end outside of gland is provided with the first cannelure.
5. push-down indicating device according to claim 3, is characterized in that the lower end outside of gland is provided with the first cannelure.
6. push-down indicating device according to claim 1 and 2, is characterized in that the top of gland is provided with at least one force hole; Or/and be provided with body mounting groove on the bottom face of gland, the upper end of body is welded in body mounting groove; Or/and, between baffle ring and push rod, sealing ring is installed.
7. push-down indicating device according to claim 5, is characterized in that the top of gland is provided with at least one force hole; Or/and be provided with body mounting groove on the bottom face of gland, the upper end of body is welded in body mounting groove; Or/and, between baffle ring and push rod, sealing ring is installed.
8. use the descending instruction cementing head of plug of push-down indicating device according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7, it is characterized in that comprising push-down indicating device and cementing head body; Be fixedly installed togather inside the lower outside of gland and the upper end of cementing head body, be provided with replacing of being connected with the cavity of cementing head body on the top of cementing head body and starch hole, backing pin is installed with at the middle part of cementing head body, plug is had in the cavity of cementing head body, plug seat on backing pin and for slurry hole and backing pin between, the lower end of push rod is pressed on plug.
9. the descending instruction cementing head of plug according to claim 8, the second cannelure is provided with inside the upper end that it is characterized in that cementing head body, the inwall of the second cannelure is provided with internal thread, the bottom of gland is fixedly mounted in the second cannelure of cementing head body by screw thread, and the upper surface of the first cannelure is pressed on the bottom face of the second cannelure.
10. the descending instruction cementing head of plug according to claim 8 or claim 9, is characterized in that being provided with sealing ring between the lower end of gland and cementing head body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877949.4A CN105350941B (en) | 2015-12-04 | 2015-12-04 | Push-down instruction device and rubber plug downlink indicate cementing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510877949.4A CN105350941B (en) | 2015-12-04 | 2015-12-04 | Push-down instruction device and rubber plug downlink indicate cementing head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105350941A true CN105350941A (en) | 2016-02-24 |
| CN105350941B CN105350941B (en) | 2018-12-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510877949.4A Active CN105350941B (en) | 2015-12-04 | 2015-12-04 | Push-down instruction device and rubber plug downlink indicate cementing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105350941B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035696A (en) * | 2017-11-21 | 2018-05-15 | 中国石油集团西部钻探工程有限公司 | Floating short circuit assembly with rubber plug indicative function |
| CN112253043A (en) * | 2020-12-09 | 2021-01-22 | 中国石油天然气集团有限公司 | High-pressure well cementing cement head |
| CN118309389A (en) * | 2024-05-14 | 2024-07-09 | 德州金玉石油机械科技有限公司 | Well cementation cementing head applied to petroleum exploitation field |
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| RU1812304C (en) * | 1990-07-10 | 1993-04-30 | Сибирский научно-исследовательский институт нефтяной промышленности | Valve for casing strings |
| RU2039210C1 (en) * | 1992-10-26 | 1995-07-09 | Пермский государственный научно-исследовательский и проектный институт нефтяной промышленности | Apparatus for boreholes absorption zones isolation |
| US20080296012A1 (en) * | 2007-05-30 | 2008-12-04 | Smith International, Inc. | Cementing manifold with canister fed dart and ball release system |
| CN201982783U (en) * | 2011-01-14 | 2011-09-21 | 浙江金锋自动化仪表有限公司 | Dual-diaphragm actuating mechanism of self-operated valve rear pressure regulator |
| CN102373898A (en) * | 2011-10-27 | 2012-03-14 | 中国石油集团西部钻探工程有限公司 | Well cementing head |
| CN202280456U (en) * | 2011-10-27 | 2012-06-20 | 中国石油集团西部钻探工程有限公司 | Descending indicating device for rubber plug of cementing head |
| CN205422633U (en) * | 2015-12-04 | 2016-08-03 | 中国石油集团西部钻探工程有限公司 | Cementing -head is instructed down to push -down indicating device and plug |
-
2015
- 2015-12-04 CN CN201510877949.4A patent/CN105350941B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU1812304C (en) * | 1990-07-10 | 1993-04-30 | Сибирский научно-исследовательский институт нефтяной промышленности | Valve for casing strings |
| RU2039210C1 (en) * | 1992-10-26 | 1995-07-09 | Пермский государственный научно-исследовательский и проектный институт нефтяной промышленности | Apparatus for boreholes absorption zones isolation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035696A (en) * | 2017-11-21 | 2018-05-15 | 中国石油集团西部钻探工程有限公司 | Floating short circuit assembly with rubber plug indicative function |
| CN108035696B (en) * | 2017-11-21 | 2023-07-07 | 中国石油天然气集团有限公司 | Floating short circuit assembly with rubber plug indication function |
| CN112253043A (en) * | 2020-12-09 | 2021-01-22 | 中国石油天然气集团有限公司 | High-pressure well cementing cement head |
| CN118309389A (en) * | 2024-05-14 | 2024-07-09 | 德州金玉石油机械科技有限公司 | Well cementation cementing head applied to petroleum exploitation field |
| CN118309389B (en) * | 2024-05-14 | 2024-09-10 | 德州金玉石油机械科技有限公司 | Well cementation cementing head applied to petroleum exploitation field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105350941B (en) | 2018-12-18 |
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Effective date of registration: 20200918 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 834009 cementing fracture engineering company, the Xinjiang Uygur Autonomous Region, Karamay Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |