CN204877372U - Three plugs of high temperature high pressure well well cementation cementing -head device - Google Patents
Three plugs of high temperature high pressure well well cementation cementing -head device Download PDFInfo
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- CN204877372U CN204877372U CN201520620391.7U CN201520620391U CN204877372U CN 204877372 U CN204877372 U CN 204877372U CN 201520620391 U CN201520620391 U CN 201520620391U CN 204877372 U CN204877372 U CN 204877372U
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- cementing
- plug
- valve
- well
- backing pin
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Abstract
The utility model discloses a three plugs of high temperature high pressure well well cementation cementing -head device, upper end confined cementing -head body and base including the tube -shape, follow the supreme plug that has set gradually down in the cementing -head body, well plug, go up the plug, the lateral wall of cementing -head body be provided with respectively with plug down, well plug, go up and release the backing pin under the plug complex, well release backing pin, on release the backing pin, the lateral wall of cementing -head body is connected with washes the pipeline valve, first cementing valve, second cementing valve, for the thick liquid valve, wash the below of pipeline valve at cementing -head this internal exit plug under in, first cementing valve exit is under in between plug and the well plug, the exit of second cementing valve is between well plug and last plug, exit in the top of last plug for the thick liquid valve. The utility model discloses can effectively improve the cementing quality, shorten the well cementation activity duration to can reduce the risk during the well cementation.
Description
Technical field
The utility model belongs to the technical field of drilling well, is specifically related to a kind of device for oil drilling and extracting equipment cementing.
Background technology
In HTHP producing well drillng operation, for effectively pressing layer quietly, prevent high pressure has channeling and reduce the problem such as cementing quality and high temperature casing expandable elongation lifting well head, guarantee follow-up gas field security development and produce smoothly, therefore usually adopt the mode of full well section cement head and the tail slurry sealing to carry out well cementing operation, and adopt different mortar architectures, to reach refinforced cement ring quality in head and the tail slurry, press layer fluid and leakage does not occur quietly, and prevent has channeling and reduce costs the object of expense.
Conventional well cementing operation mode first injects flushing liquor and insulating liquid by washing pipeline valve, secondly close and wash pipeline valve and open first backing pin, drop into bottom plug, again open cementing valve and inject cement head slurry and tail slurry, then close cementing valve and open second backing pin, dropping into top cement plug, finally open for slurry valve, inject and replace mud, until bruising completes well cementation replace operation.During employing the method, cement head slurry directly contacts with tail slurry, easily cause mutually polluting between head and the tail slurry, the final performance affecting cement paste, the thickening time is caused to change, the series of problems such as cement sealing degradation, severe patient likely cause has channeling and annular space with pressure, give from now on oil-gas field development produce bring hidden danger.
For the problems referred to above, conventional counter-measure is after injection flushing liquor and insulating liquid, first disassembles cementing cement head or simple and easy hydraulic circulating head, manual input first bottom plug, reinstall cementing cement head again, inject first slurry, then open first backing pin, drop into second bottom plug, inject tail slurry, finally open second backing pin again, drop into top cement plug, and carry out replacement operation until bruising.The method has adopted second bottom plug effectively to separate, and head and the tail are starched, avoid mutual pollution problem between the two, be conducive to improving cement sheath sealing quality, but well cementing operation flow process is comparatively loaded down with trivial details, the throwing plug time is long, be unfavorable for that the safety guaranteeing well cementing operation process is smooth, and air column can be formed before and after first bottom plug, be difficult to the sealing quality ensureing cement sheath.
Above-mentioned discussion content object be to reader introduce may to below by the various aspects of technology relevant for the various aspects of the present utility model be described and/or advocate, believe that this discussion content contributes to for reader with background's information, to be conducive to understanding various aspects of the present utility model better, therefore, should be appreciated that it is discuss to read these with this angle, instead of admit prior art.
Utility model content
The purpose of this utility model is avoid deficiency of the prior art and provide a kind of hp-ht well three plug cementing concrete head unit, it can reduce the mutual pollution between cement paste, improve HTHP producing well cementing quality, and ensure the continuity of cementing job, guarantee the safety of well cementing operation smoothly.
The purpose of this utility model is achieved through the following technical solutions:
A kind of hp-ht well three plug cementing concrete head unit is provided, comprise the cementing head body of the upper end closed of tubular and be arranged on the base of cementing head body lower end, bottom plug is disposed with from bottom to up in described cementing head body, middle plug, top cement plug, the sidewall of described cementing head body be disposed with from bottom to up respectively with bottom plug, middle plug, the lower release backing pin that top cement plug coordinates, middle release backing pin, upper release backing pin, the sidewall of described cementing head body is connected with washes pipeline valve, first cementing valve, second cementing valve, for slurry valve, describedly wash pipeline valve is in bottom plug below in the intrinsic outlet of cementing head, described first cementing valve is between described bottom plug and middle plug in the intrinsic outlet of cementing head, described second cementing valve is between described middle plug and top cement plug in the intrinsic outlet of cementing head, the described slurry valve that replaces is in above top cement plug in the intrinsic outlet of cementing head.
Wherein, described cementing head body is provided with instruction pin in the below of bottom plug.
Wherein, the sidewall of described cementing head body is provided with three release backing pin holes from bottom to up, and described lower release backing pin, middle release backing pin, upper release backing pin are plugged in a release backing pin hole respectively.
Wherein, described lower release backing pin, middle release backing pin, upper release backing pin are provided with seal respectively and between release backing pin hole.
Wherein, wash pipeline valve, the first cementing valve, the second cementing valve described in, be connected to well cementation pipeline for the entrance of slurry valve by manifold.
Wherein, described cementing head body upper end is provided with suspension ring.
The beneficial effects of the utility model: simple to operation, can avoid cement head slurry directly to contact with tail slurry, prevent mutual pollution, ensure the performance of cement paste, effectively improve cementing quality, shorten the well cementing operation time, and the risk that can reduce between cementing phase, structure is simple, and cost of investment is low.Can in field of oil drilling extensive use.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the structural representation of hp-ht well three plug cementing concrete head unit.
Detailed description of the invention
The technical solution of the utility model is understood better in order to make those skilled in the art, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, it should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
As shown in Figure 1, hp-ht well three plug cementing concrete head unit described in the utility model, comprise the cementing head body 1 of the upper end closed of tubular and be arranged on the base 3 of cementing head body 1 lower end, described cementing head body 1 upper end is provided with suspension ring 2.Bottom plug 11, middle plug 12, top cement plug 13 is disposed with from bottom to up in described cementing head body 1, the inner wall sealing of bottom plug 11, middle plug 12, top cement plug 13 and cementing head body 1, sleeve pipe, multiple plug is used for separating prepad fluid, cementing concrete head slurry and tail slurry.The sidewall of described cementing head body 1 is disposed with the lower release backing pin 8 coordinated with bottom plug 11, middle plug 12, top cement plug 13 respectively, middle release backing pin 9, upper release backing pin 10 from bottom to up, and release backing pin can allow corresponding plug descending after opening.Concrete, the sidewall of described cementing head body 1 is provided with three release backing pin holes from bottom to up, and described lower release backing pin 8, middle release backing pin 9, upper release backing pin 10 are plugged in a release backing pin hole respectively.Extracting release backing pin out can allow corresponding plug descending, inserts release backing pin and can limit corresponding plug.Described lower release backing pin 8, middle release backing pin 9, upper release backing pin 10 are provided with seal respectively and between release backing pin hole, and seal, for sealing the gap between release backing pin and release backing pin hole, prevents well cementation slurry from flowing out.
The sidewall of described cementing head body 1 is connected with washes pipeline valve 4, first cementing valve 5, second cementing valve 6, for slurry valve 7, wash pipeline valve 4 for injecting prepad fluid, first cementing valve 5, second cementing valve 6 for injecting cement paste, for slurry valve 7 for injecting replacement mud.Describedly wash the below that the outlet of pipeline valve 4 in cementing head body 1 is in bottom plug 11, described first outlet of cementing valve 5 in cementing head body 1 is between described bottom plug 11 and middle plug 12, described second outlet of cementing valve 6 in cementing head body 1 is between described middle plug 12 and top cement plug 13, is describedly in above top cement plug 13 for the outlet of slurry valve 7 in cementing head body 1.Describedly wash pipeline valve 4, first cementing valve 5, second cementing valve 6, be connected to well cementation pipeline for the entrance of slurry valve 7 by manifold.
Preferably, described cementing head body 1 is provided with instruction pin 14 above the below, base of bottom plug 11, and whether success is descending for plug in observe and decide cementing head body 1 for instruction pin 14.
Concrete operation step of the present utility model is as follows:
S1, cementing concrete head unit is winched to the top of the casing string of G.I.H on rig floor, be connected with sleeve pipe by base 3, pipeline valve 4, first cementing valve 5, second cementing valve 6 will be washed, be connected and pressure testing with well cementation pipeline for slurry valve 7;
After S2, the pressure testing of well cementation pipeline terminate, when starting to cement the well, first open and wash pipeline valve 4, infusion flushing liquor and insulating liquid;
Pipeline valve 4 is washed in S3, closedown, opens lower release backing pin 8 and the first cementing valve 5, pumps into first slurry, judges that bottom plug 11 has started under the promotion of head slurry descending by instruction pin 14;
After the complete head slurry of S4, infusion, close the first cementing valve 5, open middle release backing pin 9 and the second cementing valve 6, pump into tail slurry, in being judged by instruction pin 14, plug 12 has started descending under tail slurry promotes;
After the complete tail slurry of S5, infusion, close the second cementing valve 6, open release backing pin 10 and for slurry valve 7, pump into mud, judge that top cement plug 13 has started under mud promotes by instruction pin 14 descending;
S6, after bruising to the replacement amount of setting, close for slurry valve 7, complete well cementing operation when infusion.
Set forth a lot of detail in description above so that fully understand the utility model, but the utility model can also adopt other to be different from other modes described here and implement, and therefore, can not be interpreted as the restriction to the utility model protection domain.
In a word; although the utility model illustrates above-mentioned preferred embodiment; but should illustrate; although those skilled in the art can carry out various change and remodeling; unless such change and remodeling deviate from scope of the present utility model, otherwise all should be included in protection domain of the present utility model.
Claims (6)
1. a hp-ht well three plug cementing concrete head unit, it is characterized in that: comprise the cementing head body (1) of the upper end closed of tubular and be arranged on the base (3) of cementing head body (1) lower end, bottom plug (11) is disposed with from bottom to up in described cementing head body (1), middle plug (12), top cement plug (13), the sidewall of described cementing head body (1) be disposed with from bottom to up respectively with bottom plug (11), middle plug (12), the lower release backing pin (8) that top cement plug (13) coordinates, middle release backing pin (9), upper release backing pin (10), the sidewall of described cementing head body (1) is connected with washes pipeline valve (4), first cementing valve (5), second cementing valve (6), for slurry valve (7), describedly wash the below that the outlet of pipeline valve (4) in cementing head body (1) is in bottom plug (11), described first outlet of cementing valve (5) in cementing head body (1) is between described bottom plug (11) and middle plug (12), described second outlet of cementing valve (6) in cementing head body (1) is between described middle plug (12) and top cement plug (13), the described top being in top cement plug (13) for the outlet of slurry valve (7) in cementing head body (1).
2. hp-ht well three plug cementing concrete head unit according to claim 1, is characterized in that: described cementing head body (1) is provided with instruction pin (14) in the below of bottom plug (11).
3. hp-ht well three plug cementing concrete head unit according to claim 1, it is characterized in that: the sidewall of described cementing head body (1) is provided with three release backing pin holes from bottom to up, described lower release backing pin (8), middle release backing pin (9), upper release backing pin (10) are plugged in a release backing pin hole respectively.
4. hp-ht well three plug cementing concrete head unit according to claim 3, is characterized in that: described lower release backing pin (8), middle release backing pin (9), upper release backing pin (10) are provided with seal respectively and between release backing pin hole.
5. hp-ht well three plug cementing concrete head unit according to any one of claim 1 to 4, is characterized in that: described in wash pipeline valve (4), the first cementing valve (5), the second cementing valve (6), be connected to well cementation pipeline for the entrance of slurry valve (7) by manifold.
6. hp-ht well three plug cementing concrete head unit according to any one of claim 1 to 4, is characterized in that: described cementing head body (1) upper end is provided with suspension ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520620391.7U CN204877372U (en) | 2015-08-17 | 2015-08-17 | Three plugs of high temperature high pressure well well cementation cementing -head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520620391.7U CN204877372U (en) | 2015-08-17 | 2015-08-17 | Three plugs of high temperature high pressure well well cementation cementing -head device |
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| Publication Number | Publication Date |
|---|---|
| CN204877372U true CN204877372U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520620391.7U Withdrawn - After Issue CN204877372U (en) | 2015-08-17 | 2015-08-17 | Three plugs of high temperature high pressure well well cementation cementing -head device |
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| CN (1) | CN204877372U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019858A (en) * | 2015-08-17 | 2015-11-04 | 中国海洋石油总公司 | High-temperature and high-pressure well three-rubber-plug cementing head device and cementing operation method |
| CN106522875A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Well cementation joint |
| CN115949365A (en) * | 2023-03-14 | 2023-04-11 | 山东健源石油工程技术有限公司 | Pressure-bearing leak-proof drill rod cement head and working method thereof |
-
2015
- 2015-08-17 CN CN201520620391.7U patent/CN204877372U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019858A (en) * | 2015-08-17 | 2015-11-04 | 中国海洋石油总公司 | High-temperature and high-pressure well three-rubber-plug cementing head device and cementing operation method |
| CN105019858B (en) * | 2015-08-17 | 2017-10-13 | 中国海洋石油总公司 | The plug cementing cement head device of hp-ht well three and well cementing operation method |
| CN106522875A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Well cementation joint |
| CN115949365A (en) * | 2023-03-14 | 2023-04-11 | 山东健源石油工程技术有限公司 | Pressure-bearing leak-proof drill rod cement head and working method thereof |
| CN115949365B (en) * | 2023-03-14 | 2023-05-26 | 山东健源石油工程技术有限公司 | Pressure-bearing leakage-proof drill rod cement head and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151216 Effective date of abandoning: 20171013 |
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| AV01 | Patent right actively abandoned |