CN105798401A - Machining method for sleeve joint provided with high-strength torque threads - Google Patents
Machining method for sleeve joint provided with high-strength torque threads Download PDFInfo
- Publication number
- CN105798401A CN105798401A CN201610134609.7A CN201610134609A CN105798401A CN 105798401 A CN105798401 A CN 105798401A CN 201610134609 A CN201610134609 A CN 201610134609A CN 105798401 A CN105798401 A CN 105798401A
- Authority
- CN
- China
- Prior art keywords
- thread
- screw thread
- external screw
- basic
- tooth structure
- 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
- 238000003754 machining Methods 0.000 title abstract description 10
- 238000000034 method Methods 0.000 title abstract description 9
- 238000003672 processing method Methods 0.000 claims description 8
- 241000826860 Trapezium Species 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
-
- 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)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a machining method for a sleeve joint provided with high-strength torque threads. The machining method includes the following steps of machining a basic external thread; machining a basic internal thread; further machining the basic external thread to enable the axial widths of the top planes of thread teeth of the external thread to be sequentially increased from a port and the distance between every two thread teeth of the external thread to be sequentially reduced; and further machining the basic internal thread to enable the thread tooth structure of the internal thread to be matched with the thread tooth structure of the obtained external thread. The machining method is simple and easy, machining precision is high, operation is easy, and the sleeve joint with the high-strength torque threads is suitable for the exploitation process of a highly-deviated well and a horizontal well.
Description
Technical field
The present invention relates to a kind of processing method, in particular, the processing method relating to a kind of casing joint containing high intensity moment of torsion screw thread.
Background technology
At present, along with the development of offshore oil exploitation technology in offshore oil industry, the mining type adopting high angle hole and horizontal well is more and more extensive.In high angle hole and horizontal wells process, under to enter the resistance that sleeve pipe runs into bigger.Enter to planned well section under smoothly, need to enter under carrying out in rotary manner, thus the requirement of threaded torque resistant performance and sealing property is also more high.Along with the continuous rising of market business volume, improve the connectivity of oil pipe thread, resistance to torsion and sealing in petroleum industry and be also very important.
Summary of the invention
The invention aims to overcome deficiency of the prior art, the processing method that a kind of casing joint containing high intensity moment of torsion screw thread is provided, screw thread is made to achieve the performance of high torque resistant, ensure that screw thread will not cause threaded inefficacy because crossing moment of torsion or deficient moment of torsion, there is the feature that bonding strength is good and sealing is high simultaneously.
It is an object of the invention to be achieved through the following technical solutions.
The processing method of the casing joint containing high intensity moment of torsion screw thread of the present invention, comprises the following steps:
(1) one basic external screw thread of processing and fabricating, described basis external screw thread thread is set to trapezoidal, and its top is that plane is arranged, and the axial width dimension of plane is all equal, and the spacing dimension between the external screw thread thread of described each two basis is all equal；
(2) one basic female thread of processing and fabricating, the basic external screw thread screwed tooth structure that described basis female thread screwed tooth structure and above-mentioned steps (1) prepare agrees with mutually；
(3) the basic external screw thread that above-mentioned steps (1) is prepared is processed further making so that the axial width dimension of external screw thread thread top planes increases successively from port, and the spacing dimension between described each two external screw thread thread is sequentially reduced；
(4) the basic female thread that above-mentioned steps (2) is prepared is processed further making so that the external screw thread screwed tooth structure that female thread screwed tooth structure prepares with above-mentioned steps (3) agrees with mutually.
Compared with prior art, technical scheme is had the benefit that
In the present invention, first make basis external screw thread and basis female thread, to the further polish of external screw thread on basic externally threaded basis, the axial width dimension making external screw thread thread top planes increases successively from port, and the spacing dimension between described each two external screw thread thread is sequentially reduced, the further polish of internal threads on the basis of basis female thread, obtain required button-type, this progressively laddering processing method is simply easy, and machining accuracy is high, it is easy to operation.
Accompanying drawing explanation
Fig. 1 is externally threaded structural representation in the present invention.
Fig. 2 is the structural representation of female thread in the present invention.
Accompanying drawing labelling: 1 external screw thread 2 female thread 3 sleeve pipe
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
The processing method of the casing joint containing high intensity moment of torsion screw thread of the present invention, comprises the following steps:
(1) one basic external screw thread of processing and fabricating, described basis external screw thread is set to the conical surface, and basis external screw thread thread is set to trapezium structure, and its top is that plane is arranged, and the axial width dimension of plane is all equal, the spacing dimension between the external screw thread thread of described each two basis is all equal.
(2) one basic female thread of processing and fabricating, the basic external screw thread screwed tooth structure that described basis female thread screwed tooth structure and above-mentioned steps (1) prepare agrees with mutually.
(3) the basic external screw thread that above-mentioned steps (1) is prepared is processed further making, the axial width dimension making external screw thread thread top planes increases successively from port, spacing dimension between described each two external screw thread 1 thread is sequentially reduced, the axial width difference of any two adjacent external screw thread 1 thread top planes is all equal, and the both sides of external screw thread 1 thread are set to circular arc chamfering.And in the course of processing, due to the particularity of external screw thread 1 tooth form change in size, cutter head width used during threading 1 is fixing, maximum only 1.7mm, the position simultaneously playing cutter point also to calculate accurately.In the forming surface course of processing, the superposition problem catching up with cutter amount is also critically important, when external screw thread 1 thread side is carried out smoothing, every cutter shaft to the depth of cut can not more than 0.1mm, guarantee withdrawing amount can not more than 0.1mm, it is ensured that the integrity of externally threaded precision and cutter.Therefore, this course of processing, the required precision of external screw thread process is very high.
(4) the basic female thread that above-mentioned steps (2) is prepared is processed further making so that the external screw thread screwed tooth structure that female thread screwed tooth structure prepares with above-mentioned steps (3) agrees with mutually.
Through the casing joint that the present invention makes, the external screw thread 1 arranged including sleeve pipe 3 end and female thread 2, as shown in Figure 1, described external screw thread 1 thread is set to trapezium structure, the both sides of described external screw thread 1 thread are set to circular arc chamfering, and its top is that plane is arranged, and the axial width dimension of described external screw thread 1 thread plane increases successively from port, spacing dimension between described each two external screw thread 1 thread is sequentially reduced, and the axial width difference of described any two adjacent external screw thread 1 thread top planes is all equal.As shown in Figure 2, described female thread 2 thread is set to trapezium structure, the both sides of described female thread 2 thread are set to circular arc chamfering, its top is that plane is arranged, the axial width dimension of described female thread 2 thread plane is agreed with setting from port and is increased successively with external screw thread 1 phase, spacing dimension between described each two female thread 2 thread agrees with setting with external screw thread 1 phase and is sequentially reduced, and the axial width difference of described any two adjacent female thread 2 thread top planes is all equal.Described external screw thread 1 and female thread 2 are disposed as the conical surface, and the tapering of external screw thread 1 is equal to the tapering of female thread 2.
Although being described above in conjunction with the accompanying drawing function to the present invention and work process; but the invention is not limited in above-mentioned concrete function and work process; above-mentioned detailed description of the invention is merely schematic; rather than it is restrictive; those of ordinary skill in the art is under the enlightenment of the present invention; without departing under present inventive concept and scope of the claimed protection situation, it is also possible to making a lot of form, these belong within the protection of the present invention.
Claims (1)
1. the processing method of the casing joint containing high intensity moment of torsion screw thread, it is characterised in that comprise the following steps:
(1) one basic external screw thread of processing and fabricating, described basis external screw thread thread is set to trapezoidal, and its top is that plane is arranged, and the axial width dimension of plane is all equal, and the spacing dimension between the external screw thread thread of described each two basis is all equal；
(2) one basic female thread of processing and fabricating, the basic external screw thread screwed tooth structure that described basis female thread screwed tooth structure and above-mentioned steps (1) prepare agrees with mutually；
(3) the basic external screw thread that above-mentioned steps (1) is prepared is processed further making so that the axial width dimension of external screw thread thread top planes increases successively from port, and the spacing dimension between described each two external screw thread thread is sequentially reduced；
(4) the basic female thread that above-mentioned steps (2) is prepared is processed further making so that the external screw thread screwed tooth structure that female thread screwed tooth structure prepares with above-mentioned steps (3) agrees with mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134609.7A CN105798401A (en) | 2016-03-09 | 2016-03-09 | Machining method for sleeve joint provided with high-strength torque threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134609.7A CN105798401A (en) | 2016-03-09 | 2016-03-09 | Machining method for sleeve joint provided with high-strength torque threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105798401A true CN105798401A (en) | 2016-07-27 |
Family
ID=56467025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610134609.7A Pending CN105798401A (en) | 2016-03-09 | 2016-03-09 | Machining method for sleeve joint provided with high-strength torque threads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105798401A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2520049A1 (en) * | 1982-01-18 | 1983-07-22 | Hunting Oilfield Services Ltd | FITTING FOR TUBES, IN PARTICULAR JOINT OF DRILLING RODS |
| US4444421A (en) * | 1980-11-12 | 1984-04-24 | Varco International, Inc. | Driveable pile connections |
| CN102421987A (en) * | 2009-05-12 | 2012-04-18 | 瓦卢莱克曼内斯曼油气法国公司 | Set for producing a threaded connection for drilling and operating hydrocarbon wells, and resulting threaded connection |
| CN103291228A (en) * | 2013-06-07 | 2013-09-11 | 中国石油集团石油管工程技术研究院 | Oil casing special threads and machining method thereof |
| 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 |
| CN103842608A (en) * | 2011-09-13 | 2014-06-04 | 瓦卢莱克油气法国公司 | Assembly for producing a threaded joint for the drilling and operation of hydrocarbon wells, and resulting threaded joint |
-
2016
- 2016-03-09 CN CN201610134609.7A patent/CN105798401A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4444421A (en) * | 1980-11-12 | 1984-04-24 | Varco International, Inc. | Driveable pile connections |
| FR2520049A1 (en) * | 1982-01-18 | 1983-07-22 | Hunting Oilfield Services Ltd | FITTING FOR TUBES, IN PARTICULAR JOINT OF DRILLING RODS |
| CN102421987A (en) * | 2009-05-12 | 2012-04-18 | 瓦卢莱克曼内斯曼油气法国公司 | Set for producing a threaded connection for drilling and operating hydrocarbon wells, and resulting threaded connection |
| CN103842608A (en) * | 2011-09-13 | 2014-06-04 | 瓦卢莱克油气法国公司 | Assembly for producing a threaded joint for the drilling and operation of hydrocarbon wells, and resulting threaded joint |
| CN103291228A (en) * | 2013-06-07 | 2013-09-11 | 中国石油集团石油管工程技术研究院 | Oil casing special threads and machining method thereof |
| 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 |
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| 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: 20160727 |