CN204703788U - A kind of pipe nipple for blowout preventer casing pressure test - Google Patents
A kind of pipe nipple for blowout preventer casing pressure test Download PDFInfo
- Publication number
- CN204703788U CN204703788U CN201520095239.1U CN201520095239U CN204703788U CN 204703788 U CN204703788 U CN 204703788U CN 201520095239 U CN201520095239 U CN 201520095239U CN 204703788 U CN204703788 U CN 204703788U
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- China
- Prior art keywords
- nipple
- pipe nipple
- pipe
- blowout preventer
- overcoat
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Abstract
The utility model provides a kind of pipe nipple for blowout preventer casing pressure test, and it comprises: nipple body, and the outer rim of its upper end is provided with drilling rod pin thread, and the inner edge of its lower end is provided with drilling rod box, and its inside is drilling tool water hole; Pipe nipple overcoat, outside its sheathed middle part being connected to described nipple body, the external diameter of described pipe nipple overcoat is identical with the external diameter of sleeve pipe.Described pipe nipple sleeve thread is connected in described nipple body, and described nipple body is also connected by staple with described pipe nipple overcoat.The utility model is applicable to the sealing pressure testing inspection of blowout preventer sleeve pipe and corresponding ram preventer, applied widely, and structure is simple, combined and instant, handling safety.
Description
Technical field
The utility model relates to petroleum drilling engineering technical field, be about a kind of for the pipe nipple of blowout preventer casing pressure test, particularly can be used for the pressure testing pipe nipple testing blowout preventer bobbin seal performance.
Background technology
In order to ensure borehole pressure balance in cementing operation process, especially during preventing cement paste from waiting solidifying process, weightlessness causes borehole pressure balance destroyed, the even generation of gas blowout accident, drilling engineering well control technique requires: before setting of casing, I grade of risk well should install the ram preventer identical with casing size and pressure testing inspection with the II grade of risk well being unkitted annular preventer.
When prior art carries out pressure testing inspection, should consider that bottom blanking plug and setting of casing head salvage problem with the later stage, consider the sealing pressure testing problem of upper pipe ram sleeve pipe again, constructing operation is loaded down with trivial details, not only impact construction timeliness, and bring potential safety hazard to work progress; And, in current drilling well setting of casing process, the pressure testing pipe nipple do not matched.Therefore, a kind of pressure testing pipe nipple that can be used for testing blowout preventer bobbin seal performance is provided to become a difficult problem in the urgent need to address at present.
Because above-mentioned prior art Problems existing, the present inventor, in conjunction with the design for many years of relevant manufacture field and use experience, was aided with strong professional knowledge, and according to the requirement of drilling well control technology, provide a kind of pipe nipple for blowout preventer casing pressure test, overcome above-mentioned defect.
Utility model content
The purpose of this utility model is to provide a kind of pipe nipple for blowout preventer casing pressure test, and it is applicable to the sealing pressure testing inspection of sleeve pipe and corresponding ram preventer, applied widely, and structure is simple, combined and instant, handling safety.
Above-mentioned purpose of the present utility model and effect can adopt following technical proposal to realize:
For a pipe nipple for blowout preventer casing pressure test, it comprises: nipple body, and the outer rim of its upper end is provided with drilling rod pin thread, and the inner edge of its lower end is provided with drilling rod box, and its inside is drilling tool water hole; Pipe nipple overcoat, outside its sheathed middle part being connected to described nipple body, the external diameter of described pipe nipple overcoat is identical with the external diameter of sleeve pipe, and described pipe nipple overcoat can seal with the ram preventer being arranged on well head and be connected, and the size of described ram preventer and described sleeve pipe matches.
In a preferred embodiment, described pipe nipple sleeve thread is connected in described nipple body.
In a preferred embodiment, described nipple body is connected by multiple staple with described pipe nipple overcoat.
In a preferred embodiment, described staple is two, and two described staples are arranged in the radial symmetric of described nipple body.
Feature and the advantage of a kind of pipe nipple for blowout preventer casing pressure test of the utility model are: be connected with nipple body by the pipe nipple overcoat had with blowout preventer sleeve pipe same outer diameter size, make its Rapid Combination become the pipe nipple of blowout preventer casing pressure test; The ram preventer matched with casing size is installed at well head, makes the pipe nipple overcoat of pipe nipple and ram preventer realize sealing, with realize sleeve pipe go into the well before with the sealing pressure testing inspection of ram preventer; Matched with the pipe nipple overcoat of various outer diameter size by identical nipple body, to meet the sealing pressure testing inspection of different size sleeve pipe and corresponding ram preventer; A kind of pipe nipple for blowout preventer casing pressure test of the utility model, applied widely, structure is simple, combined and instant, handling safety.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more 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 this accompanying drawing.
Fig. 1 is the structural representation of a kind of pipe nipple for blowout preventer casing pressure test of the utility model.
Drawing reference numeral illustrates:
1 nipple body, 2 staples, 3 pipe nipple overcoats, 4 drilling rod pin threads, 5 drilling rod boxes, 6 drilling tool water holes.
Detailed description of the invention
In order to have clearer understanding to the technical solution of the utility model, object and effect, existing accompanying drawings detailed description of the invention of the present utility model:
As shown in Figure 1, the utility model provides a kind of pipe nipple for blowout preventer casing pressure test, and it comprises: nipple body 1, and the outer rim of its upper end is provided with drilling rod pin thread 4, and the inner edge of its lower end is provided with drilling rod box 5, and its inside is drilling tool water hole 6; Pipe nipple overcoat 3, outside its sheathed middle part being connected to described nipple body 1, the external diameter of described pipe nipple overcoat 3 is identical with the external diameter of sleeve pipe.
Specifically, pipe nipple overcoat 3 is threaded in outside the middle part in nipple body 1, is connected between nipple body 1 with pipe nipple overcoat 3 further by multiple staple 2 meanwhile, makes the connection between nipple body 1 and pipe nipple overcoat 3 more firm.It is preferred that staple 2 is two, and two staples 2 are arranged in the radial symmetric of nipple body 1, and what make between nipple body 1 and pipe nipple overcoat 3 is stressed more even.
Further, the pipe nipple overcoat 3 of various outer diameter size can be changed according to the size of sleeve pipe, with the pressure testing pipe nipple making pipe nipple overcoat 3 and nipple body 1 be combined into various outer diameter size, namely, the size of nipple body 1 is constant, the external diameter of pipe nipple overcoat 3 is then identical with the external diameter of series of standards sleeve pipe, the internal diameter of pipe nipple overcoat 3 is identical with the external diameter of nipple body 1, thus, a kind of pipe nipple for blowout preventer casing pressure test of the present utility model then can be applicable to the sleeve pipe of different size and the sealing pressure testing inspection of corresponding ram preventer.Meanwhile, the drilling rod pin thread 4 that nipple body 1 is arranged and drilling rod box 5 are all the standard drill pipe pin thread and the standard drill pipe box that meet national standard size, make it apply more convenient, more extensive.
Before wellbore construction setting of casing, the ram preventer that the blowout preventer casing size entered under well head is installed and be pre-matches, after ram preventer is installed, the standard drill pipe box 5 of nipple body 1 lower end is connected and fixed with the standard drill pipe pin thread on blanking plug top, the standard drill pipe pin thread 4 of nipple body 1 upper end is connected with standard drill pipe simultaneously, the pressure testing tubing string formed after being connected with blanking plug and standard drill pipe by pipe nipple is lowered into bottom the casing head below ram preventer, and close ram preventer, now, the blanking plug of pressure testing tubing string bottom and casing head realize sealing, pipe nipple overcoat 3 and ram preventer realize sealing, and make to form a seal cavity between two place's sealing stations, sealing pressure testing inspection is realized with this, as ram preventer and well head leakproof, then pressure testing passed examination.After sealing pressure testing completes, open ram preventer, pressure testing tubing string is proposed, and dismantles pressure testing pipe nipple.
A kind of pipe nipple for blowout preventer casing pressure test of the utility model, it is applicable to the sealing pressure testing inspection of different size sleeve pipe and corresponding ram preventer, and whole blowout preventer bobbin seal pressure testing process safety, not only ensure borehole pressure balance in cementing operation process, during preventing cement paste from waiting solidifying process, weightlessness causes borehole pressure balance destroyed, the even generation of gas blowout accident, and can effectively improve drilling well timeliness, shorten construction period, reduce drilling well investment, structure is simple, combined and instant, handling safety.The utility model can be applied to I grade of risk well in each oil field and be unkitted the sealing pressure testing inspection of II grade of risk well before setting of casing of annular preventer, applied widely and have a good application prospect.
The above is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, have in any art and usually know the knowledgeable, not departing from the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. for a pipe nipple for blowout preventer casing pressure test, it is characterized in that, the described pipe nipple for blowout preventer casing pressure test comprises:
Nipple body, the outer rim of its upper end is provided with drilling rod pin thread, and the inner edge of its lower end is provided with drilling rod box, and its inside is drilling tool water hole;
Pipe nipple overcoat, outside its sheathed middle part being connected to described nipple body, the external diameter of described pipe nipple overcoat is identical with the external diameter of sleeve pipe, and described pipe nipple overcoat can seal with the ram preventer being arranged on well head and be connected, and the size of described ram preventer and described sleeve pipe matches.
2. a kind of pipe nipple for blowout preventer casing pressure test according to claim 1, is characterized in that, described pipe nipple sleeve thread is connected in described nipple body.
3. a kind of pipe nipple for blowout preventer casing pressure test according to claim 2, is characterized in that, described nipple body is connected by multiple staple with described pipe nipple overcoat.
4. a kind of pipe nipple for blowout preventer casing pressure test according to claim 3, is characterized in that, described staple is two, and two described staples are arranged in the radial symmetric of described nipple body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520095239.1U CN204703788U (en) | 2015-02-10 | 2015-02-10 | A kind of pipe nipple for blowout preventer casing pressure test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520095239.1U CN204703788U (en) | 2015-02-10 | 2015-02-10 | A kind of pipe nipple for blowout preventer casing pressure test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204703788U true CN204703788U (en) | 2015-10-14 |
Family
ID=54283413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520095239.1U Withdrawn - After Issue CN204703788U (en) | 2015-02-10 | 2015-02-10 | A kind of pipe nipple for blowout preventer casing pressure test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204703788U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727756A (en) * | 2015-02-10 | 2015-06-24 | 中国石油天然气股份有限公司 | Short piece used for pressure test on well plugging device casing pipe |
| CN110487475A (en) * | 2018-05-15 | 2019-11-22 | 中国石油化工股份有限公司 | Pressure monitoring device and method between a kind of foam slurry waiting-on-cement |
-
2015
- 2015-02-10 CN CN201520095239.1U patent/CN204703788U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727756A (en) * | 2015-02-10 | 2015-06-24 | 中国石油天然气股份有限公司 | Short piece used for pressure test on well plugging device casing pipe |
| CN110487475A (en) * | 2018-05-15 | 2019-11-22 | 中国石油化工股份有限公司 | Pressure monitoring device and method between a kind of foam slurry waiting-on-cement |
| CN110487475B (en) * | 2018-05-15 | 2021-03-16 | 中国石油化工股份有限公司 | Pressure monitoring device and method for foam cement slurry during waiting period |
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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: 20151014 Effective date of abandoning: 20170613 |
|
| AV01 | Patent right actively abandoned |