CN2630473Y - Efficient wear-resist elongated drill collar - Google Patents
Efficient wear-resist elongated drill collar Download PDFInfo
- Publication number
- CN2630473Y CN2630473Y CN 03206513 CN03206513U CN2630473Y CN 2630473 Y CN2630473 Y CN 2630473Y CN 03206513 CN03206513 CN 03206513 CN 03206513 U CN03206513 U CN 03206513U CN 2630473 Y CN2630473 Y CN 2630473Y
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- CN
- China
- Prior art keywords
- drill collar
- collar body
- wear
- model
- utility
- 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 - Lifetime
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Abstract
The utility model relates to a highly efficient wear-resisting lengthened drill collar, which primarily resolves the problem of low abrasion resistance, the short operational life span as well as the low efficiency of the current drill collar. The utility model is characterized in that a drill collar body (1) has ring shaped hanging fastened groove (2). The wear-resisting layer (3) is fixed on a side of the drill collar (1) on the hanging fastened groove (2). The drill collar has the advantage of good wear-resisting layer, has a long operational life span and high efficiency of drilling.
Description
Technical field:
The utility model relates to the instrument that connects drilling tool in the oil drilling field, belongs to a kind of high-efficiency abrasion-proof lengthening drill collar.
Background technology:
When oil drilling, usually adopt drill collar to connect drilling tool, when removing drill collar, need carry out operation with cumbersome elevator operations such as slips, safety slip, lifting short circuits, labor strength is big, drilling efficiency is low, the existing structure of drill collar makes the drill collar internal stress be dispersed in the drill collar threads place simultaneously, easily causes it to rupture at the screw thread place; Used drill bit is generally selected the PDC drill bit for use at present, cooperates high rotating speed to use, because the raising of bit speed when running into hard formation or sandy gravel stratum, makes the particularly wearing and tearing aggravation of drill collar of drilling tool, also easily makes it produce fatigue fracture, and application life is short.
The utility model content:
In order to overcome the deficiency that existing drill collar wears no resistance, application life is short and drilling efficiency is low, the utility model provides a kind of high-efficiency abrasion-proof lengthening drill collar, this high-efficiency abrasion-proof lengthening drill collar can not make jig come off, and has that abrasion resistance is good, long service life and high characteristics of drilling efficiency.
The technical solution of the utility model is: this high-efficiency abrasion-proof lengthening drill collar comprises the drill collar body, has annular elevator groove on the drill collar body, and a sidetracking of elevator groove quickly is fixed with wearing layer on the body.
All be fixed with wearing layer on the both sides drill collar body of above-mentioned elevator groove; The wearing layer shop is welded on the drill collar body.
The utlity model has following beneficial effect: owing to having annular elevator groove on the drill collar body of taking in the such scheme, its objective is and make drill collar body internal stress be dispersed in the elevator groove place, prevent that effectively the drill collar body from rupturing at the screw thread place, reduced cumbersome elevator flow chart simultaneously, alleviate labor strength, improved drilling efficiency; Be fixed with wearing layer on the one or both sides drill collar body of elevator groove, wearing layer can be controlled the wearing and tearing of drill collar body diameter effectively, and jig is come off, and makes its abrasion resistance good, long service life.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
1-drill collar body among the figure, 2-elevator groove, 3-wearing layer.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, this high-efficiency abrasion-proof lengthening drill collar comprises drill collar body 1, have annular elevator groove 2 on the drill collar body 1, its objective is and make drill collar body 1 internal stress be dispersed in elevator groove 2 places, prevent that effectively drill collar body 1 is in its screw thread place, lower end fracture, reduce cumbersome elevator flow chart simultaneously, alleviated labor strength, improved drilling efficiency; One sidetracking of elevator groove 2 body 1 upper berth weldering quickly wearing layer 3, just above the elevator groove 2 or below drill collar body 1 upper berth weldering wearing layer 3, also can be on the drill collar body 1 of the upper and lower of elevator groove 2 equal shop weldering wearing layers 3, wearing layer 3 can be controlled the wearing and tearing of drill collar body 1 external diameter effectively, and abrasion resistance is good, when running into hard formation or sandy gravel stratum, the external diameter wearing and tearing of drill collar body 1 are little, can not make it produce fatigue fracture, long service life can come off the drill collar jig because of 1 wearing and tearing of drill collar body simultaneously yet.
During actual the use,, after using twice or thrice, need to cut off the screw thread of drill collar body 1 lower end, again processing for the screw thread that prevents drill collar body 1 lower end fractures; Therefore, the drill collar body 1 of this high-efficiency abrasion-proof lengthening drill collar 50-80cm that structurally should extend on the basis of standard drill collar effectively guarantees its application life.
Claims (3)
1, a kind of high-efficiency abrasion-proof lengthening drill collar comprises drill collar body (1), and it is characterized in that: have annular elevator groove (2) on the drill collar body (1), a sidetracking of elevator groove (2) quickly is fixed with wearing layer (3) on the body (1).
2, high-efficiency abrasion-proof lengthening drill collar according to claim 1 is characterized in that: all be fixed with wearing layer (3) on the both sides drill collar bodies (1) of elevator groove (2).
3, high-efficiency abrasion-proof lengthening drill collar according to claim 1 and 2, it is characterized in that: wearing layer (3) shop is welded on the drill collar body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03206513 CN2630473Y (en) | 2003-07-28 | 2003-07-28 | Efficient wear-resist elongated drill collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03206513 CN2630473Y (en) | 2003-07-28 | 2003-07-28 | Efficient wear-resist elongated drill collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2630473Y true CN2630473Y (en) | 2004-08-04 |
Family
ID=34288074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03206513 Expired - Lifetime CN2630473Y (en) | 2003-07-28 | 2003-07-28 | Efficient wear-resist elongated drill collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2630473Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926679A (en) * | 2012-11-22 | 2013-02-13 | 四川华德莱斯石油装备股份有限公司 | Spiral wear-resistant drill collar |
| CN104533314A (en) * | 2014-12-04 | 2015-04-22 | 刘岩 | Multi-effect lifting pressurizing device for drilling tool |
-
2003
- 2003-07-28 CN CN 03206513 patent/CN2630473Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926679A (en) * | 2012-11-22 | 2013-02-13 | 四川华德莱斯石油装备股份有限公司 | Spiral wear-resistant drill collar |
| CN102926679B (en) * | 2012-11-22 | 2015-10-07 | 四川华德莱斯石油装备股份有限公司 | A kind of spiral wear-resistant drill collar |
| CN104533314A (en) * | 2014-12-04 | 2015-04-22 | 刘岩 | Multi-effect lifting pressurizing device for drilling tool |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130728 Granted publication date: 20040804 |