CN104727756B - Short joint for pressure test of casing of well plugging device - Google Patents
Short joint for pressure test of casing of well plugging device Download PDFInfo
- Publication number
- CN104727756B CN104727756B CN201510069926.0A CN201510069926A CN104727756B CN 104727756 B CN104727756 B CN 104727756B CN 201510069926 A CN201510069926 A CN 201510069926A CN 104727756 B CN104727756 B CN 104727756B
- Authority
- CN
- China
- Prior art keywords
- nipple
- pipe nipple
- pipe
- pressure test
- blowout preventer
- 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.)
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Links
- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 210000002445 nipple Anatomy 0.000 claims abstract description 82
- 238000005553 drilling Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000007689 inspection Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000011083 cement mortar 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
- 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 section for pressure test of a casing of a blowout preventer, which comprises: the outer edge of the upper end of the short section body is provided with a drill rod male buckle, the inner edge of the lower end of the short section body is provided with a drill rod female buckle, and a drilling tool water hole is formed inside the short section body; and the nipple outer sleeve is sleeved and connected with the outer side of the middle part of the nipple body, and the outer diameter of the nipple outer sleeve is the same as that of the sleeve. The nipple outer sleeve is in threaded connection with the nipple body, and the nipple body is connected with the nipple outer sleeve through a fixing nail. The invention is suitable for the sealing pressure test inspection of the casing of the blowout preventer and the corresponding ram blowout preventer, and has the advantages of wide application range, simple structure, convenient combination and safe operation.
Description
Technical field
It is about a kind of pipe nipple for blowout preventer casing pressure test, spy the present invention relates to petroleum drilling engineering technical field
It is not the pressure testing pipe nipple that can be used to test blowout preventer bobbin seal performance.
Background technology
In order to borehole pressure is balanced during ensureing cementing operation, weightlessness is caused during especially preventing cement mortar from waiting solidifying process
Borehole pressure balance is destroyed, in addition gas blowout accident generation, the requirement of drilling engineering well control technique：Before setting of casing, I grade of risk well
Should be installed and casing size identical ram preventer and pressure testing inspection with II grade of risk well without annular preventer.
When prior art carries out pressure testing inspection, should consider that bottom blanking plug is asked with setting for casing head with later stage salvaging
Topic, considers the sealing pressure testing problem of upper pipe ram sleeve pipe again, and constructing operation is cumbersome, not only influence construction timeliness, and gives
Work progress brings potential safety hazard；And, during current drilling well setting of casing, the pressure testing pipe nipple not matched.Therefore, carry
Turn into problem in the urgent need to address at present for a kind of pressure testing pipe nipple that can be used to test blowout preventer bobbin seal performance.
In view of the problem that above-mentioned prior art is present, the present inventor combines the design for many years of related manufacture field and uses
Experience, is aided with too strong professional knowledge, and according to the requirement of drilling well control technology, there is provided one kind is used for blowout preventer casing pressure test
Pipe nipple overcome drawbacks described above.
The content of the invention
It is an object of the invention to provide a kind of pipe nipple for blowout preventer casing pressure test, it is applied to sleeve pipe and corresponding flashboard
The sealing pressure testing of preventer checks that applied widely, simple structure, combination is convenient, safe operation.
Above-mentioned purpose of the invention and effect can be realized using following technical proposal：
A kind of pipe nipple for blowout preventer casing pressure test, it includes：Nipple body, the outer rim of its upper end is provided with drilling rod public affairs
Button, the inner edge of its lower end is provided with drilling rod box, and it is drilling tool water hole that it is internal；Pipe nipple overcoat, it is arranged and is connected to the pipe nipple sheet
The middle part outside of body, the external diameter of the pipe nipple overcoat is identical with the external diameter of sleeve pipe, the pipe nipple overcoat can with installed in well head
Ram preventer sealing is connected, and the ram preventer matches with the size of described sleeve pipe.
In a preferred embodiment, the pipe nipple sleeve thread is connected in the nipple body.
In a preferred embodiment, the nipple body is connected with the pipe nipple overcoat by the fixed nail of multiple.
In a preferred embodiment, the fixed nail is two, and two fixations are followed closely in the footpath of the nipple body
To being symmetrical arranged.
A kind of the characteristics of pipe nipple for blowout preventer casing pressure test of the present invention and advantage are：Will with blowout preventer sleeve pipe phase
Pipe nipple overcoat with outside dimension is connected with nipple body, makes its Rapid Combination into the pipe nipple of blowout preventer casing pressure test；In well
Mouth installs the ram preventer matched with casing size, and the pipe nipple overcoat and ram preventer for making pipe nipple are realized sealing, with reality
Sealing pressure testing inspection before now sleeve pipe is gone into the well with ram preventer；By identical nipple body and the pipe nipple of various outer diameter size
Overcoat is engaged, to meet the sealing pressure testing inspection of different size sleeve pipe and corresponding ram preventer；It is of the invention a kind of for sealing
The pipe nipple of well device casing pressure test, applied widely, simple structure, combination is convenient, safe operation.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, can also obtain other according to the accompanying drawing
Accompanying drawing.
Fig. 1 is a kind of structural representation of pipe nipple for blowout preventer casing pressure test of the invention.
Drawing reference numeral explanation：
1 nipple body, 2 fix nail, 3 pipe nipple overcoats, 4 drilling rod pin threads, 5 drilling rod boxes, 6 drilling tool water holes.
Specific embodiment
In order to have clearer understanding to technical scheme, purpose and effect, in conjunction with the brief description of the drawings present invention
Specific embodiment：
As shown in figure 1, the present invention provides a kind of pipe nipple for blowout preventer casing pressure test, it includes：Nipple body 1, its
The outer rim of 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 it is drilling tool water hole 6 that it is internal；Pipe nipple overcoat
3, it is arranged the middle part outside for being connected to the nipple body 1, and the external diameter of the pipe nipple overcoat 3 is identical with the external diameter of sleeve pipe.
Specifically, pipe nipple overcoat 3 is threaded in the middle part outside in nipple body 1, meanwhile, nipple body 1 and pipe nipple
Further it is connected by multiple fixed nails 2 between overcoat 3 so that the connection between nipple body 1 and pipe nipple overcoat 3 is more firm
Gu.It is preferred that fixed nail 2 is two, and two fixed nails 2 are set in the radial symmetric of nipple body 1 so that nipple body
Being more uniformly stressed between 1 and pipe nipple overcoat 3.
Further, the size according to sleeve pipe can change the pipe nipple overcoat 3 of various outer diameter size, so that pipe nipple overcoat 3
With the pressure testing pipe nipple that nipple body 1 is combined into various outer diameter size, i.e. the size of nipple body 1 is constant, and pipe nipple overcoat
External diameter of 3 external diameter then with series of standards sleeve pipe is identical, and the internal diameter of pipe nipple overcoat 3 is identical with the external diameter of nipple body 1, by
This, a kind of pipe nipple for blowout preventer casing pressure test of the invention then can be applied to various sizes of sleeve pipe and corresponding flashboard blowout prevention
The sealing pressure testing of device is checked.Meanwhile, the drilling rod pin thread 4 and drilling rod box 5 set in nipple body 1 are all to meet national standard chi
Very little standard drill pipe pin thread and standard drill pipe box, makes its application more convenient, more extensive.
Before wellbore construction setting of casing, well head install with it is pre- under the flashboard blowout prevention that matches of the blowout preventer casing size that enters
Device, after ram preventer is installed, by the standard drill pipe box 5 of the lower end of nipple body 1 and the standard drill pipe pin thread on blanking plug top
It is connected, while the standard drill pipe pin thread 4 of the upper end of nipple body 1 is connected with standard drill pipe, by pipe nipple and blanking plug and mark
The pressure testing tubing string formed after quasi- drilling rod connection is lowered into the casing head bottom below ram preventer, and closes ram preventer,
Now, the blanking plug of pressure testing tubing string bottom realizes sealing with casing head, and pipe nipple overcoat 3 realizes sealing with ram preventer, and makes
A sealing space is formed at two between sealing station, realize sealing pressure testing inspection with this, such as ram preventer and well head without
Seepage, then pressure testing passed examination.After sealing pressure testing is completed, ram preventer is opened, pressure testing tubing string is proposed, and dismantle pressure testing
Pipe nipple.
A kind of pipe nipple for blowout preventer casing pressure test of the invention, it is applied to different size sleeve pipe and corresponding flashboard blowout prevention
The sealing pressure testing of device is checked, and whole blowout preventer bobbin seal pressure testing process safety, has not only ensured well during cementing operation
Interior pressure balance, to cause borehole pressure to balance destroyed for weightlessness during preventing cement mortar from waiting solidifying process, or even gas blowout accident hair
It is raw, and drilling well timeliness can be effectively improved, shorten construction period, drilling well investment is reduced, simple structure, combination is convenient, operation peace
Entirely.I grade of risk well present invention could apply to each oil field and II grade of risk well without annular preventer are before setting of casing
Sealing pressure testing check, it is applied widely and have a good application prospect.
The above is only presently preferred embodiments of the present invention, and any formal limitation is not done to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, has in any art
Usual skill, is not departing from the range of technical solution of the present invention, a little when being made using the technology contents of the disclosure above
The Equivalent embodiments of equivalent variations are changed or are modified to, as long as being the content without departing from technical solution of the present invention, according to the present invention
Technical spirit any simple modification, equivalent variations and the modification made to above example, still fall within the technology of the present invention side
In the range of case.
Claims (4)
1. a kind of pipe nipple for blowout preventer casing pressure test, it is characterised in that the pipe nipple bag for blowout preventer casing pressure test
Include：
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 it is drilling tool water that it is internal
Eye；
Pipe nipple overcoat, it is arranged the middle part outside for being connected to the nipple body, and the external diameter of the pipe nipple overcoat is outer with sleeve pipe
Footpath is identical, and the pipe nipple overcoat can be connected with the ram preventer sealing installed in well head, the ram preventer and the set
The size of pipe matches.
2. a kind of pipe nipple for blowout preventer casing pressure test according to claim 1, it is characterised in that the pipe nipple overcoat
It is threaded in the nipple body.
3. a kind of pipe nipple for blowout preventer casing pressure test according to claim 2, it is characterised in that the nipple body
It is connected by the fixed nail of multiple with the pipe nipple overcoat.
4. a kind of pipe nipple for blowout preventer casing pressure test according to claim 3, it is characterised in that the fixed nail is
Two, the radial symmetric that two fixations follow closely in the nipple body is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510069926.0A CN104727756B (en) | 2015-02-10 | 2015-02-10 | Short joint for pressure test of casing of well plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510069926.0A CN104727756B (en) | 2015-02-10 | 2015-02-10 | Short joint for pressure test of casing of well plugging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104727756A CN104727756A (en) | 2015-06-24 |
| CN104727756B true CN104727756B (en) | 2017-06-13 |
Family
ID=53452098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510069926.0A Active CN104727756B (en) | 2015-02-10 | 2015-02-10 | Short joint for pressure test of casing of well plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104727756B (en) |
Family Cites Families (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 |
| CN103573205B (en) * | 2012-07-18 | 2015-12-09 | 中国石油化工股份有限公司 | A kind of blowout preventer pressure-testing sealing cup seal apparatus |
| 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 |
| CN104165030B (en) * | 2013-06-20 | 2017-05-03 | 中国矿业大学(北京) | Glass fiber reinforced plastic casing pipe string manufacturing process of ground coal-bed gas well |
| CN204703788U (en) * | 2015-02-10 | 2015-10-14 | 中国石油天然气股份有限公司 | Short joint for pressure test of casing of well plugging device |
-
2015
- 2015-02-10 CN CN201510069926.0A patent/CN104727756B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104727756A (en) | 2015-06-24 |
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