CN104265190A - TTGM-4 special thread structure oil casing coupling - Google Patents
TTGM-4 special thread structure oil casing coupling Download PDFInfo
- Publication number
- CN104265190A CN104265190A CN201410508427.2A CN201410508427A CN104265190A CN 104265190 A CN104265190 A CN 104265190A CN 201410508427 A CN201410508427 A CN 201410508427A CN 104265190 A CN104265190 A CN 104265190A
- Authority
- CN
- China
- Prior art keywords
- face
- contact
- box cupling
- coupling
- conical seal
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 25
- 238000010168 coupling process Methods 0.000 title claims abstract description 25
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005065 mining Methods 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012827 research and development 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
- 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)
- Earth Drilling (AREA)
Abstract
The invention discloses a TTGM-4 special thread structure oil casing coupling. Conical buttress coupling internal threads are arranged at two ends of a coupling, the coupling is provided with a coupling torque shoulder, conical coupling sealing surfaces are arranged at the tail ends of the coupling internal threads, the coupling is connected with an oil casing body, conical buttress casing body external threads are arranged at two ends of the casing body, the casing body is provided with a casing body torque shoulder, conical casing body sealing surfaces are arranged at the tail ends of the casing body external threads, the casing body external threads are engaged and screwed with the coupling internal threads, the taper of the conical casing body sealing surfaces is as same as that of the conical coupling sealing surfaces, the conical casing body sealing surfaces and the conical coupling sealing surfaces are in interference fit from roots to arc portions, and the casing body torque shoulder contacts with the coupling torque shoulder. Compared with the prior art, the TTGM-4 special thread structure oil casing coupling has the advantages that fine sealing effects can be achieved, and an anti-torque function can be effectively achieved when torque is applied by external force.
Description
Technical field
The invention belongs to oil exploitation drilling equipment technical field, relate to the casing threads link technique of drilling equipment, particularly a kind of TTGM-4 special thread structure oil casing collar.
Background technology
Along with the world is to the reduction year by year of the sharply soaring of fossil energy demand and oil allowable exploitation, the direction of extraction of current oil exploitation field forward deep-well, ultradeep well, high-pressure oil-gas well, thick oil thermal extraction, directional well etc. progressively develops, and proposes more and more harsher technical requirements thus to the sealing between petroleum pipeline and pipe.API (American Petroleum Institute (API)) the standard round screw thread of a large amount of use in the past and buttress thread joint all can not meet the demand of the Oil/gas Well of mining environment inclement condition in gas tightness, bonding strength and corrosion resistance, thus force people to remove research and development performance Special threading connector more reliably.
Given this, a kind of TTGM-4 special thread structure oil casing collar is provided, to meet when the Oil/gas Well of mining environment inclement condition, to the demand that the sealing between petroleum pipeline and pipe proposes.
Summary of the invention
The object of this invention is to provide a kind of TTGM-4 special thread structure oil casing collar, to solve when the Oil/gas Well of mining environment inclement condition, use API of the prior art (American Petroleum Institute (API)) standard round screw thread and buttress thread joint in gas tightness, bonding strength and corrosion resistance, all can not meet the problem of the Oil/gas Well of mining environment inclement condition.
For realizing object of the present invention, the invention provides a kind of TTGM-4 special thread structure oil casing collar, described box cupling two ends are equipped with the partially trapezoidal coupling inner thread of taper, are also provided with box cupling torque shoulder, described coupling inner thread end is provided with box cupling conical seal (contact) face, described box cupling is for connecting the body of tubing and casing, described body two ends are provided with the inclined laddertron extracorporeal thread of taper, described body is provided with body torque shoulder, described body male ends is provided with body conical seal (contact) face, described body external screw thread and coupling inner thread carry out engaging button, the tapering of described body conical seal (contact) face is identical with the tapering of box cupling conical seal (contact) face, described body conical seal (contact) face and box cupling conical seal (contact) face from root to arch section interference fit, described body torque shoulder contacts with box cupling torque shoulder.
Further, what described body conical seal (contact) face and box cupling conical seal (contact) face junction formed metal contacts conical seal (contact) face.
Further, described box cupling conical internal thread afterbody is provided with the groove receiving hoop circumference.
Beneficial effect of the present invention is, compared with the prior art, and the sealing effectiveness that can play; External force can well play torque resistant effect when applying moment of torsion.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure, 1 is box cupling; 2 is coupling inner thread; 3 is groove; 4 is box cupling conical seal (contact) face; 5 is box cupling torque shoulder.
Detailed description of the invention
In order to make object of the present invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be understood to specific embodiment described herein only in order to explain the present invention, be not limited to protection scope of the present invention.
As shown in Figure 1, the invention provides a kind of TTGM-4 special thread structure oil casing collar, described box cupling 1 two ends are equipped with the partially trapezoidal coupling inner thread 2 of taper, are also provided with box cupling torque shoulder 5, described coupling inner thread 2 end is provided with box cupling conical seal (contact) face, described box cupling 1 is for connecting the body of tubing and casing, described body two ends are provided with the inclined laddertron extracorporeal thread of taper, described body is provided with body torque shoulder, described body male ends is provided with body conical seal (contact) face, described body external screw thread and coupling inner thread 2 carry out engaging button, the tapering of described body conical seal (contact) face is identical with the tapering of box cupling conical seal (contact) face 4, described body conical seal (contact) face and box cupling conical seal (contact) face 4 from root to arch section interference fit, described body torque shoulder contacts with box cupling torque shoulder 5.
What described body conical seal (contact) face and box cupling conical seal (contact) face 4 junction formed metal contacts conical seal (contact) face.
Described box cupling conical internal thread 2 afterbody is provided with the groove receiving hoop circumference.
It should be noted that, the invention provides a kind of box cupling used that matches with tubing and casing, when using, the taper inclined laddertron extracorporeal thread of body carries out engaging upper button with the partially trapezoidal coupling inner thread 2 of the taper of box cupling 1, because the tapering of body conical seal (contact) face 7 is identical with the tapering of box cupling conical seal (contact) face 4, so the sealing effectiveness played can be contacted well; In continuation, after button, body conical seal (contact) face and box cupling conical seal (contact) face 4 start to produce interference fit from root to arch section, after continuing upper button again, body torque shoulder starts to contact with box cupling torque shoulder 5, and produce the axial stress sharply increased, axial stress now feeds back to loaded moment of torsion can sharply become large, therefore, stop when moment of torsion arrives within the scope of nominal torque loading moment of torsion.So when under practical state, when external force applies moment of torsion, can well play torque resistant effect herein.Box cupling place is provided with groove 3, deposits unnecessary thread compound except playing, and increases lubrication timeliness; Can also serve stress release effect by better withdrawing again when machining internal thread simultaneously.Described in the present invention, " special thread structure " refers to the architectural feature had described in the present invention.
Beneficial effect of the present invention is, compared with the prior art, and the sealing effectiveness that can play; External force can well play torque resistant effect when applying moment of torsion.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. a TTGM-4 special thread structure oil casing collar, is characterized in that, described box cupling two ends are equipped with the partially trapezoidal coupling inner thread of taper, are also provided with box cupling torque shoulder, described coupling inner thread end is provided with box cupling conical seal (contact) face, described box cupling is for connecting the body of tubing and casing, described body two ends are provided with the inclined laddertron extracorporeal thread of taper, described body is provided with body torque shoulder, described body male ends is provided with body conical seal (contact) face, described body external screw thread and coupling inner thread carry out engaging button, the tapering of described body conical seal (contact) face is identical with the tapering of box cupling conical seal (contact) face, described body conical seal (contact) face and box cupling conical seal (contact) face from root to arch section interference fit, described body torque shoulder contacts with box cupling torque shoulder.
2. TTGM-4 special thread structure oil casing collar according to claim 1, is characterized in that, what described body conical seal (contact) face and box cupling conical seal (contact) face junction formed metal contacts conical seal (contact) face.
3. TTGM-4 special thread structure oil casing collar according to claim 2, is characterized in that, described box cupling conical internal thread afterbody is provided with the groove receiving hoop circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410508427.2A CN104265190A (en) | 2014-09-28 | 2014-09-28 | TTGM-4 special thread structure oil casing coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410508427.2A CN104265190A (en) | 2014-09-28 | 2014-09-28 | TTGM-4 special thread structure oil casing coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265190A true CN104265190A (en) | 2015-01-07 |
Family
ID=52156750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410508427.2A Pending CN104265190A (en) | 2014-09-28 | 2014-09-28 | TTGM-4 special thread structure oil casing coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265190A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6009611A (en) * | 1998-09-24 | 2000-01-04 | Oil & Gas Rental Services, Inc. | Method for detecting wear at connections between pin and box joints |
| CN101899953A (en) * | 2010-08-16 | 2010-12-01 | 天津钢管集团股份有限公司 | Thread joint structure for high-performance oil casing |
| CN201723179U (en) * | 2010-07-09 | 2011-01-26 | 无锡西姆莱斯石油专用管制造有限公司 | Air-tight oil casing nipple |
| CN101975034A (en) * | 2010-10-18 | 2011-02-16 | 西安交通大学 | Hermetic seal connecting structure for special buckle of oil casing |
| CN201810223U (en) * | 2010-08-26 | 2011-04-27 | 无锡西姆莱斯石油专用管制造有限公司 | Buttress thread sleeve joint |
| CN202125258U (en) * | 2011-06-21 | 2012-01-25 | 杨林 | Oil sleeve connector with high sealing performance and thread-gluing resistance |
| CN102996079A (en) * | 2011-09-16 | 2013-03-27 | 中国石油化工股份有限公司 | Tubular air sealing screwed joint and application thereof |
| CN203175422U (en) * | 2013-04-19 | 2013-09-04 | 中国海洋石油总公司 | Quick airtight casing thread connector |
| CN103527110A (en) * | 2013-09-18 | 2014-01-22 | 西安三环科技开发总公司 | Multistage sealing anti-sticky buckle type thread for titanium alloy oil casing |
| CN204225790U (en) * | 2014-09-28 | 2015-03-25 | 天津德华石油装备制造有限公司 | Special thread structure oil casing collar |
-
2014
- 2014-09-28 CN CN201410508427.2A patent/CN104265190A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6009611A (en) * | 1998-09-24 | 2000-01-04 | Oil & Gas Rental Services, Inc. | Method for detecting wear at connections between pin and box joints |
| CN201723179U (en) * | 2010-07-09 | 2011-01-26 | 无锡西姆莱斯石油专用管制造有限公司 | Air-tight oil casing nipple |
| CN101899953A (en) * | 2010-08-16 | 2010-12-01 | 天津钢管集团股份有限公司 | Thread joint structure for high-performance oil casing |
| CN201810223U (en) * | 2010-08-26 | 2011-04-27 | 无锡西姆莱斯石油专用管制造有限公司 | Buttress thread sleeve joint |
| CN101975034A (en) * | 2010-10-18 | 2011-02-16 | 西安交通大学 | Hermetic seal connecting structure for special buckle of oil casing |
| CN202125258U (en) * | 2011-06-21 | 2012-01-25 | 杨林 | Oil sleeve connector with high sealing performance and thread-gluing resistance |
| CN102996079A (en) * | 2011-09-16 | 2013-03-27 | 中国石油化工股份有限公司 | Tubular air sealing screwed joint and application thereof |
| CN203175422U (en) * | 2013-04-19 | 2013-09-04 | 中国海洋石油总公司 | Quick airtight casing thread connector |
| CN103527110A (en) * | 2013-09-18 | 2014-01-22 | 西安三环科技开发总公司 | Multistage sealing anti-sticky buckle type thread for titanium alloy oil casing |
| CN204225790U (en) * | 2014-09-28 | 2015-03-25 | 天津德华石油装备制造有限公司 | Special thread structure oil casing collar |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |