CN2455919Y - Non-rotary joint - Google Patents
Non-rotary joint Download PDFInfo
- Publication number
- CN2455919Y CN2455919Y CN 00252175 CN00252175U CN2455919Y CN 2455919 Y CN2455919 Y CN 2455919Y CN 00252175 CN00252175 CN 00252175 CN 00252175 U CN00252175 U CN 00252175U CN 2455919 Y CN2455919 Y CN 2455919Y
- Authority
- CN
- China
- Prior art keywords
- ring
- wearing bush
- wear
- locking
- check ring
- 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.)
- Expired - Fee Related
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- Earth Drilling (AREA)
Abstract
The utility model relates to a non-rotary joint for reducing torque. Both ends of a joint body are fastened and connected with a drill rod, the outer surface of the body is provided with an abrasion preventing sleeve and is also provided with a locking check ring and an abrasion resistant check ring, and the locking check ring and the abrasion resistant check ring are respectively arranged at both ends of the abrasion preventing sleeve. Abrasion resistant materials are fixed to the outer circumferential surface of the joint body and the inner cylindrical surface of the abrasion preventing sleeve, and are also fixed among the end surfaces of the locking check ring, the wear preventing sleeve and the abrasion resistant check ring. Because the wear preventing sleeve is not rotated or is rotated at a low speed corresponding to a sleeve pipe, the wire of the sleeve pipe by the drill rod can be reduced. The utility model can reduce the frictional torque of a well wall or the sleeve tube when the drill rod rotates. The utility model is suitable for drilling tools which are used for drilling deep wells, ultra deep wells, horizontal wells and large displacement wells in petroleum drilled wells.
Description
The utility model relates to the drilling tool in a kind of oil drilling, and twist joint falls in the reduction casing wear that especially uses on the oil drill rocker non-rotating.
When boring deep-well, ultradeep well, horizontal well and extended reach well, casing wear is a problem that can not be ignored.Wearing and tearing are mainly derived from the wearing and tearing to sleeve pipe of tool joint when rotation.This is never had effective solution, when for example fetching water horizontal well, can only bend towards level gradually, drilling rod is attached on the borehole wall, will certainly increase the friction torque of drilling rod the borehole wall with drill bit, worn out sleeve pipe easily, the formation accident.Also have rubber is directly wrapped on the drilling rod,, fall the DeGrain of turning round, and synthetic rubber regular meeting " fragmentation " lost efficacy because the friction between rubber and the joint is big.
The purpose of this utility model is: a kind of non-rotating twist joint of falling is provided, makes it can reduce the wearing and tearing of drilling rod to sleeve pipe effectively, reduce the friction torque of drilling rod when rotation and the borehole wall or sleeve pipe simultaneously.
The technical scheme that realizes the utility model purpose is as follows: a kind of non-rotating falling of being made up of body, locking back-up ring, latch assembly, wearing bush and wear-resisting back-up ring in the twist joint, the upper/lower terminal of body has internal thread and external screw thread respectively, and external screw thread and the internal thread with two drilling rods is fastenedly connected separately.On the external surface of joint body, wearing bush is housed, all is fixed with high-abrasive material at body outer circumference surface and wearing bush inner cylinder face.Locking back-up ring and wear-resisting back-up ring are installed in the external surface of body, and place the upper/lower terminal of wearing bush respectively.On the upper surface of the both ends of the surface of lower surface, the wearing bush of locking back-up ring and wear-resisting back-up ring, also all be fixed with high-abrasive material.
High-abrasive material described in the utility model all has smooth matching surface.
Owing to adopt technique scheme, fall twist joint and be connected on the drilling rod the utility model is non-rotating, part as drilling rod, when drilling rod rotates, body, locking back-up ring and wear-resisting back-up ring and drilling rod together rotate, and wearing bush is relative with the sleeve pipe or the borehole wall static, do not change or change very slowly, body and wearing bush form a pair of friction pair like this, because the contact surface of body and wearing bush all is fixed with high-abrasive material, and fitting face is shiny surface, so just makes the friction that relatively rotates generation between original drilling rod and sleeve pipe or the borehole wall be converted into a pair of friction pair of being made up of ultra-hard abrasive material.Compared with prior art, the utility model be because wearing bush can change with respect to sleeve pipe or rotating speed is very low, and wearing bush be enclosed within body that drilling rod links to each other outside, its size is greater than the drilling rod external diameter, thereby can avoid the spin friction of drilling rod to sleeve pipe, reduce the wearing and tearing of drilling rod effectively to sleeve pipe.Because the friction factor of friction pair is very low between joint body and wearing bush, add the diameter of the diameter of friction pair less than tool joint, make friction pair reverse the arm of force than drilling rod to reverse the arm of force little, thereby when also having reduced the drilling rod rotation and the friction torque of the borehole wall or sleeve pipe.
The utility model not only is fixed with high-abrasive material at the radial surface of body and wearing bush, and the contact end face also be fixed with high-abrasive material, and make wear-resisting friction pair by correct grinding, thereby can further reduce rotation torque, and prolong the application life of locking back-up ring, wearing bush and wear-resisting back-up ring.
Below by drawings and Examples the utility model is further specified:
Fig. 1 is the non-rotating structure chart that falls twist joint of the utility model
Among the figure, 1. body 2. is locked back-up rings 3. locking pins 4. wearing bushs
5. wear-resisting back-up ring 6. springs 7. high-abrasive materials
Figure 1 shows that the non-rotating embodiment who falls twist joint of the utility model.This is non-rotating to fall twist joint and is made up of body 1, locking back-up ring 2, latch assembly, wearing bush 4 and wear-resisting back-up ring 5.The upper/lower terminal of body 1 is respectively conventional drill rod thread, is fastenedly connected with two drilling rods separately.External surface at body 1 is equipped with wearing bush 4, all is fixed with high-abrasive material 7 at body 1 outer circumference surface and wearing bush 4 inner cylinder faces, and this high-abrasive material 7 can be a carbide alloy, and welding-on is at matching surface.Locking back-up ring 2 and wear-resisting back-up ring 5 are installed in the external surface of body 1, and place the upper/lower terminal of wearing bush 4 respectively.At the lower surface of locking back-up ring 2, the both ends of the surface of wearing bush 4 and the also equal welding-on in upper surface of wear-resisting back-up ring 5 wearable hard alloy material is arranged.In the utility model on the fitting face high-abrasive material of welding-on all finish grind and make smooth matching surface.
Latch assembly comprises locking pin 3 and spring 6.This latch assembly is installed on body 1 and the locking back-up ring 2, and locking pin 3 is pressed on the spring 6.Latch assembly is housed on the joint body 1 can prevents its play up and down.When wearing bush 4 has worn and torn after using, can change by latch assembly.Can depress locking pin 3 this moment with special tool, and compression spring 6 can be pulled down locking back-up ring 2 vertically, pulls down wearing bush 4 and wear-resisting back-up ring 5 subsequently successively.
In order to reduce and to prevent casing wear, can make by the material that wearing bush 4 usefulness are lower than sleeve pipe hardness, like this, even the two contact also mainly is that wearing bush 4 is frayed, with protective casing.When body 1 and 4 friction pair radial clearances of wearing bush during, promptly should change wearing bush by latch assembly greater than 1.5 millimeters.
Whole circle welding-on has high-abrasive material 7 on the both ends of the surface of the utility model wearing bush 4, and the high-abrasive material 7 on the end face of locking back-up ring 2 and wear-resisting back-up ring 5 can be continuous, also can be interrupted.
The utility model is applicable on the well drilling tool of deep-well, ultradeep well, horizontal well and extended reach well.
Claims (4)
1, a kind of non-rotating twist joint of falling, it is characterized in that: comprise body (1), locking back-up ring (2), latch assembly, wearing bush (4) and wear-resisting back-up ring (5), the upper/lower terminal of body (1) has internal thread and external screw thread respectively, external screw thread and internal thread with two drilling rods is fastenedly connected separately, external surface at body (1) is equipped with wearing bush (4), all is fixed with high-abrasive material (7) at body (1) outer circumference surface and wearing bush (4) inner cylinder face; Locking back-up ring (2) and wear-resisting back-up ring (5) are installed in the external surface of body (1), and place the upper/lower terminal of wearing bush (4) respectively; On the upper surface of the both ends of the surface of lower surface, the wearing bush (4) of locking back-up ring (2) and wear-resisting back-up ring (5), also all be fixed with high-abrasive material (7).
2, the non-rotating twist joint of falling according to claim 1 is characterized in that: described latch assembly comprises locking pin (3) and spring (6), and this latch assembly is installed on body (1) and the locking back-up ring (2), and locking pin (3) is pressed on the spring (6).
3, the non-rotating twist joint of falling according to claim 1, it is characterized in that: described high-abrasive material (7) has smooth matching surface.
4, the non-rotating twist joint of falling according to claim 1, it is characterized in that: whole circle is fixed with high-abrasive material (7) on the both ends of the surface of wearing bush (4), and the high-abrasive material (7) that is fixed on the end face of locking back-up ring (2) and wear-resisting back-up ring (5) can be continuous or be interrupted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00252175 CN2455919Y (en) | 2000-11-22 | 2000-11-22 | Non-rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00252175 CN2455919Y (en) | 2000-11-22 | 2000-11-22 | Non-rotary joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2455919Y true CN2455919Y (en) | 2001-10-24 |
Family
ID=33609896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00252175 Expired - Fee Related CN2455919Y (en) | 2000-11-22 | 2000-11-22 | Non-rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2455919Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670291A (en) * | 2013-12-03 | 2014-03-26 | 成都恩承油气有限公司 | Antiwear joint |
-
2000
- 2000-11-22 CN CN 00252175 patent/CN2455919Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670291A (en) * | 2013-12-03 | 2014-03-26 | 成都恩承油气有限公司 | Antiwear joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |