CN202832259U - Rotary type anti-abrasion joint - Google Patents
Rotary type anti-abrasion joint Download PDFInfo
- Publication number
- CN202832259U CN202832259U CN 201220561419 CN201220561419U CN202832259U CN 202832259 U CN202832259 U CN 202832259U CN 201220561419 CN201220561419 CN 201220561419 CN 201220561419 U CN201220561419 U CN 201220561419U CN 202832259 U CN202832259 U CN 202832259U
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- CN
- China
- Prior art keywords
- abrasion
- joint
- rotary type
- wear
- type anti
- 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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Abstract
The utility model discloses a rotary type anti-abrasion joint, and relates to a drill stem joint. The rotary type anti-abrasion joint comprises a hollow barrel-shaped body which is connected with an anti-abrasion bushing in a sleeved mode, and the anti-abrasion bushing is connected with the hollow barrel-shaped body in a sliding mode. Due to the rotary type anti-abrasion joint, the abrasion of a drill tool can be reduced obviously, reactive torques borne by a drill column is substantially reduced when the drill column is rotated, not only is the drill tool protected, but also a bushing tube is protected, stability of well walls is improved, and the rotary type anti-abrasion joint has certain popularization and application value.
Description
Technical field
The utility model relates to a kind of tool joint.
Background technology
Present drilling mode be unable to do without rotary drilling and top drive drilling, and these two kinds of drilling modes all are that Surface power drive is passed to drill bit by the drilling tool rotation, thus fractured rock.Like this, the cased well section is being arranged, drilling tool and sleeve pipe will produce friction, and drilling tool weares and teares in advance, casing wall attenuation even worn out, and seriously the situation setting of casing is squeezed ruins, and affects the stability of the borehole wall, perhaps makes cave-in.If casing off is high-pressure oil-gas layer, can produce oil gas and invade, drilling fluid density is reduced, cause the well kick accident; If casing off is low pressure reservoir, can produce leakage, pollute reservoir.At barefoot interval, the direct and rock stratum friction of drilling tool, the drilling tool that not only weares and teares, and affect borehole wall stability.In drilling tool when rotation,, drilling tool and sleeve friction have increased reaction torque, and especially the kelly bar reaction torque of bearing is very large, and kelly bar bears for a long time excessive reaction torque and early fatigue can occur destroys.
Summary of the invention
The utility model aims to provide a kind of wearing and tearing that can prevent between drilling tool and the borehole wall, reduces the rotary blast joint of the reaction torque that drilling tool bears.
Rotary blast joint described in the utility model comprises the hollow tube-shape body, and body is socketed with a wear-resistant sleeve, and rolling between wear-resistant sleeve and the body is connected.
Preferably, be provided with steel ball between described wear-resistant sleeve and the body, wear-resistant sleeve is fixedly connected with steel ball by screw, and rolling between steel ball and the body is connected.
More preferably, the wear-resistant sleeve external surface is provided with the straightedge muscle.
Perhaps preferably, the one end is provided with external screw thread, and the other end is provided with internal thread.
After the utility model used, the drilling tool wearing and tearing can obviously reduce, and the reaction torque of bearing during drill string rotating significantly reduces, and has both protected drilling tool, and protective casing has again improved the stability of the borehole wall, has certain application value.
Description of drawings
Fig. 1 be embodiment one partly cut open figure.
The specific embodiment
As shown in Figure 1, rotary blast joint described in the utility model comprises hollow tube-shape body 2, and the one end is provided with external screw thread 5, and the other end is provided with internal thread 1.Body 2 is socketed with a wear-resistant sleeve 6, and wear-resistant sleeve 6 external surfaces are provided with straightedge muscle 7.Be provided with steel ball 4 between described wear-resistant sleeve 6 and the body 2, wear-resistant sleeve 6 is fixedly connected with steel ball 4 by screw 3, and rolling between steel ball 4 and the body 2 is connected.
, hole shrinkage large in hole angle or azimuthal variation and drilling tool are in the situations such as borehole axis revolution; connect the utility model in the drilling assembly; wear-resistant sleeve 6 at first contacts with the borehole wall during drilling well; when drilling tool rotates; wear-resistant sleeve 6 is relative with the borehole wall static, and relatively rotating between drilling tool and the borehole wall transferred on joint body 2 and the wear-resistant sleeve 6, do not produce friction between drilling tool and the borehole wall; both protected drilling tool, again protective casing.Because the rotation between joint body 2 and the wear-resistant sleeve 6 is by steel ball 4 scrolling realization, the rolling friction factor is less, has reduced the reaction torque of drilling tool.
Claims (4)
1. rotary blast joint comprises hollow tube-shape body (2), it is characterized in that body (2) is socketed with a wear-resistant sleeve (6), and rolling between wear-resistant sleeve (6) and the body (2) is connected.
2. rotary blast joint as claimed in claim 1, it is characterized in that being provided with steel ball (4) between described wear-resistant sleeve (6) and the body (2), wear-resistant sleeve (6) is fixedly connected with steel ball (4) by screw (3), and rolling between steel ball (4) and the body (2) is connected.
3. rotary blast joint as claimed in claim 1 or 2 is characterized in that wear-resistant sleeve (6) external surface is provided with straightedge muscle (7).
4. rotary blast joint as claimed in claim 1 is characterized in that the one end is provided with external screw thread (5), and the other end is provided with internal thread (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561419 CN202832259U (en) | 2012-10-30 | 2012-10-30 | Rotary type anti-abrasion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561419 CN202832259U (en) | 2012-10-30 | 2012-10-30 | Rotary type anti-abrasion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832259U true CN202832259U (en) | 2013-03-27 |
Family
ID=47943991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220561419 Expired - Fee Related CN202832259U (en) | 2012-10-30 | 2012-10-30 | Rotary type anti-abrasion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832259U (en) |
-
2012
- 2012-10-30 CN CN 201220561419 patent/CN202832259U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20131030 |