CN104727756A - Short piece used for pressure test on well plugging device casing pipe - Google Patents
Short piece used for pressure test on well plugging device casing pipe Download PDFInfo
- Publication number
- CN104727756A CN104727756A CN201510069926.0A CN201510069926A CN104727756A CN 104727756 A CN104727756 A CN 104727756A CN 201510069926 A CN201510069926 A CN 201510069926A CN 104727756 A CN104727756 A CN 104727756A
- Authority
- CN
- China
- Prior art keywords
- short piece
- nipple
- pipe nipple
- pressure test
- pipe
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000005553 drilling Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 210000002445 nipple Anatomy 0.000 claims description 73
- 238000007789 sealing Methods 0.000 abstract description 14
- 238000007689 inspection Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a short piece used for a pressure test on a well plugging device casing pipe. The short piece comprises a short piece body and a short piece outer sleeve. The outer edge at the upper end of the short piece body is provided with a drilling rod male buckle, the inner edge at the lower end of the short piece body is provided with a drilling rod female buckle, and the inner portion of the short piece body is a drilling tool water hole. The short piece outer sleeve is connected with the outer side of the middle portion of the short piece body in a sleeving mode. The outer diameter of the short piece outer sleeve is equal to the outer diameter of the casing pipe. The short piece outer sleeve is connected with the short piece body in a threaded mode, and the short piece body can also be connected with the short piece outer sleeve through a fixing nail. The short piece is applicable to the sealing and pressure testing inspection on the well plugging device casing pipe and a corresponding flashboard blowout preventer, the application range is wide, the structure is simple, the combination is convenient, and the operation is safe.
Description
Technical field
The present invention 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.
Summary of the invention
The object of this invention is to provide a kind of pipe nipple for blowout preventer casing pressure test, 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 invention 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.
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 present invention 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 present invention, 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 embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, 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 present invention.
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 technical scheme of the present invention, object and effect, existing accompanying drawings the specific embodiment of the present invention:
As shown in Figure 1, the invention provides a kind of pipe nipple for blowout preventer casing pressure test, 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 invention 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 present invention, 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 present invention 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 invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, have in any art and usually know the knowledgeable, not departing from the scope of technical solution of the present invention, 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 solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
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.
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 |
|---|---|---|---|
| CN201510069926.0A CN104727756B (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 |
|---|---|---|---|
| CN201510069926.0A CN104727756B (en) | 2015-02-10 | 2015-02-10 | A kind of pipe nipple for blowout preventer casing pressure test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104727756A true CN104727756A (en) | 2015-06-24 |
| CN104727756B CN104727756B (en) | 2017-06-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510069926.0A Active CN104727756B (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) | CN104727756B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2410412Y (en) * | 1999-11-05 | 2000-12-13 | 大庆石油管理局钻井研究所 | Casing pressure-test short joint |
| CN2559772Y (en) * | 2002-05-16 | 2003-07-09 | 陈新林 | Down hole safety protection short joint of drill pipe transmission well-logging |
| CN201428415Y (en) * | 2009-06-27 | 2010-03-24 | 东营市天亿石油工具制造有限公司 | Quick pressure testing device of well mouth blowout preventer |
| CN201620810U (en) * | 2010-03-31 | 2010-11-03 | 胜利油田供应方圆石油装备有限责任公司 | Pressure tester of wellhead blowout hookup |
| CN201902190U (en) * | 2010-12-22 | 2011-07-20 | 中国石油天然气集团公司 | Blowout prevention pressure testing device |
| CN202348269U (en) * | 2011-12-20 | 2012-07-25 | 中国石油集团渤海钻探工程有限公司 | Pressure testing device for oil well casing pipe string |
| CN202832484U (en) * | 2012-08-31 | 2013-03-27 | 天津汇铸石油设备科技有限公司 | Well mouth pressure testing device |
| CN103573205A (en) * | 2012-07-18 | 2014-02-12 | 中国石油化工股份有限公司 | Sealing cup packer for pressure testing of blowout preventer |
| CN104165030A (en) * | 2013-06-20 | 2014-11-26 | 中国矿业大学(北京) | Glass fiber reinforced plastic casing pipe string process of ground coal-bed gas well and connection joint |
| CN204703788U (en) * | 2015-02-10 | 2015-10-14 | 中国石油天然气股份有限公司 | A kind of pipe nipple for blowout preventer casing pressure test |
-
2015
- 2015-02-10 CN CN201510069926.0A patent/CN104727756B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2410412Y (en) * | 1999-11-05 | 2000-12-13 | 大庆石油管理局钻井研究所 | Casing pressure-test short joint |
| CN2559772Y (en) * | 2002-05-16 | 2003-07-09 | 陈新林 | Down hole safety protection short joint of drill pipe transmission well-logging |
| CN201428415Y (en) * | 2009-06-27 | 2010-03-24 | 东营市天亿石油工具制造有限公司 | Quick pressure testing device of well mouth blowout preventer |
| CN201620810U (en) * | 2010-03-31 | 2010-11-03 | 胜利油田供应方圆石油装备有限责任公司 | Pressure tester of wellhead blowout hookup |
| CN201902190U (en) * | 2010-12-22 | 2011-07-20 | 中国石油天然气集团公司 | Blowout prevention pressure testing device |
| CN202348269U (en) * | 2011-12-20 | 2012-07-25 | 中国石油集团渤海钻探工程有限公司 | Pressure testing device for oil well casing pipe string |
| CN103573205A (en) * | 2012-07-18 | 2014-02-12 | 中国石油化工股份有限公司 | Sealing cup packer for pressure testing of blowout preventer |
| CN202832484U (en) * | 2012-08-31 | 2013-03-27 | 天津汇铸石油设备科技有限公司 | Well mouth pressure testing device |
| CN104165030A (en) * | 2013-06-20 | 2014-11-26 | 中国矿业大学(北京) | Glass fiber reinforced plastic casing pipe string process of ground coal-bed gas well and connection joint |
| CN204703788U (en) * | 2015-02-10 | 2015-10-14 | 中国石油天然气股份有限公司 | A kind of pipe nipple for blowout preventer casing pressure test |
Non-Patent Citations (2)
| Title |
|---|
| 安玉山等: "试压堵塞器在降低井控安全风险中的应用", 《油气田环境保护》 * |
| 程波: "井口防喷装置密封性试压工具的研制与应用", 《胜利油田职工大学学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104727756B (en) | 2017-06-13 |
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