CN201843531U - Friction and torque reducing tool - Google Patents
Friction and torque reducing tool Download PDFInfo
- Publication number
- CN201843531U CN201843531U CN2010205884843U CN201020588484U CN201843531U CN 201843531 U CN201843531 U CN 201843531U CN 2010205884843 U CN2010205884843 U CN 2010205884843U CN 201020588484 U CN201020588484 U CN 201020588484U CN 201843531 U CN201843531 U CN 201843531U
- Authority
- CN
- China
- Prior art keywords
- wear
- support ring
- drill rod
- resistant
- sleeve
- 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 friction and torque reducing tool, which comprises an upper connector, an upper wear-resistant support ring, a wear-resistant sleeve, a lower wear-resistant support ring and a lower connector in sequence from top to bottom. The friction and torsion reducing tool is characterized in that the wear-resistant sleeve is fixed by the upper wear-resistant support ring and the lower wear-resistant support ring and is sleeved on the outer wall of the upper connector, the upper connector and the lower connector are connected through a drill rod buckle, hard alloy blocks are sintered on the cavity and the two end faces of the wear-resistant sleeve, the axial surface of the outer wall of the upper connector is uniformly provided with a plurality of round holes, hard alloy columns are embedded in the round holes, and hard alloy blocks are also sintered on the contact surfaces of the wear-resistant support rings and the wear-resistant sleeve. The outside diameter of the wear-resistant sleeve is larger than the outside diameter of the upper joint. A non-rotating isolation part is formed between a drill rod and a sleeve or between the drill rod and a shaft wall, so that the ground-driven rotating torque, the wear of the drill rod and the sleeve and the drill rod feeding resistance are reduced, the drilling torque is effectively increased, the friction is decreased, the drilling pressure and torque can be better transferred, and the mechanical drilling speed of the drill rod can be increased during drilling.
Description
Technical field
The utility model relates to a kind of antifriction and subtracts the instrument of turning round, and is used to bear between the drill string and the borehole wall or drill string and the sleeve pipe and rubs, and transmits and reverses power, belongs to the antifriction of using in the oil drilling construction and subtracts the instrument of turning round.
Background technology
At present, in the rotary drilling process, the rotary power of drill bit is the top-drive device by rotating disk on the rig floor or top, passes to drill bit by drill string.In carrying out high angle hole, directed drilling or extended reach well drilling process, because the mutual friction mutually between drill string and the borehole wall or drill string and the sleeve pipe makes this transmission of reversing power become very difficult.At present, the antifriction of use subtracts the instrument overcoat of turning round and adopts ball bearing usually, inlays ball between the groove of overcoat and central axis, when carrying out the work running in the down-hole, the ball of inlaying very easily damages, and broken ball chip has not only influenced the normal operation of instrument, and has reduced rod boring efficient.
The utility model content
The purpose of this utility model is to provide a kind of antifriction of new structure to subtract the instrument of turning round, by being arranged on the wear-resisting overcoat on this instrument and the sliding friction of top connection, friction in the replacement rod boring process between drilling rod and the sleeve pipe or the borehole wall, thereby promoted the rod boring ability, improved rate of penetration.The problem of ball fragmentation when having avoided original antifriction to subtract turning round the tools scroll friction.
The utility model adopts following technical scheme, be that a kind of antifriction subtracts the instrument of turning round from top to bottom successively by top connection, top abrasionproof support ring, wear-resisting overcoat, bottom abrasionproof support ring and lower contact constitute, it is characterized in that wear-resisting overcoat is by last, following two abrasionproof support rings are fixed, be sleeved on the outer wall of top connection, top connection and lower contact link by drilling rod and connect, wherein wear-resisting overcoat inner chamber and both ends of the surface sintered hard alloy piece, evenly be furnished with some circular holes on the top connection outer wall axial plane, tungsten carbide button post, abrasionproof support ring and wear-resisting overcoat contact surface place sintered hard alloy piece in the circular hole.
The utility model antifriction subtracts the instrument of turning round, its wear-resisting overcoat external diameter is greater than the top connection external diameter, drill string contacts with the borehole wall with sleeve pipe or overcoat by the joint overcoat, when changeing drill string rotating, produce relative rotation by bearing between top connection and the wear-resisting overcoat, and radially keeping relative static with sleeve pipe overcoat or wear-resisting overcoat and the borehole wall, so the sliding-contact of drilling rod and sleeve pipe or drilling rod and the borehole wall replaces by contacting between top connection and the wear-resisting overcoat, reduced the loss of machine of torque of drill string transmission.
During the utility model construction operation, antifriction of the present utility model is subtracted the instrument of turning round be connected on the drill string, use, the loss of machine of torque that can effectively reduce in the high frictional resistance section of directed drilling, extended reach well or high angle hole.
The utility model can make and form non-rotary isolation position between drilling rod and sleeve pipe or the drilling rod and the borehole wall, the surface driving rotation torque is reduced, drilling rod and casing wear have been reduced, making drilling rod send into resistance reduces, effectively creep into the increase of moment of torsion, frictional resistance reduces, and makes the pressure of the drill and moment of torsion obtain better transmission, the rate of penetration when improving rod boring.
Description of drawings
Fig. 1 is a front view of the present utility model;
In the drawings: top connection 1, top abrasionproof support ring 2, hard alloy blocks 3, wear-resisting overcoat 4, hard alloy columnar 5, lower contact 6, bottom abrasionproof support ring 7.
The specific embodiment
Below in conjunction with accompanying drawing, structure of the present utility model is further specified, as shown in Figure 1, a kind of antifriction subtracts the instrument of turning round from top to bottom successively by top connection 1, top abrasionproof support ring 2, wear-resisting overcoat 4, bottom abrasionproof support ring 7 and lower contact 6 constitute, it is characterized in that wear-resisting overcoat 4 is by last, following two abrasionproof support rings 2,7 is fixing, be sleeved on the outer wall of top connection 1, top connection 1 and lower contact 6 link by drilling rod and connect, the inner chamber of wherein wear-resisting overcoat 4 and both ends of the surface sintered hard alloy piece 3, evenly be furnished with some circular holes on the top connection 1 outer wall axial plane, tungsten carbide button's post 5 in the circular hole, top, bottom abrasionproof support ring 2,7 with wear-resisting overcoat 4 contact surface place sintered hard alloy pieces 3.
Antifriction of the present utility model subtracts the instrument of turning round, and the external diameter of its wear-resisting overcoat 4 is greater than the external diameter of top connection 1.
Claims (2)
1. an antifriction subtracts the instrument of turning round from top to bottom successively by top connection (1), top abrasionproof support ring (2), wear-resisting overcoat (4), bottom abrasionproof support ring (7) and lower contact (6) constitute, it is characterized in that wear-resisting overcoat (4) is by last, following two abrasionproof support rings (2,7) fixing, be sleeved on the outer wall of top connection (1), top connection (1) links by drilling rod with lower contact (6) and connects, the inner chamber of wherein wear-resisting overcoat (4) and both ends of the surface sintered hard alloy piece (3), evenly be furnished with some circular holes on top connection (1) the outer wall axial plane, tungsten carbide button's post (5) in the circular hole, on, bottom abrasionproof support ring (2,7) with wear-resisting overcoat (4) contact surface place sintered hard alloy piece (3).
2. antifriction as claimed in claim 1 subtracts the instrument of turning round, and it is characterized in that the external diameter of the external diameter of wear-resisting overcoat (4) greater than top connection (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205884843U CN201843531U (en) | 2010-10-28 | 2010-10-28 | Friction and torque reducing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205884843U CN201843531U (en) | 2010-10-28 | 2010-10-28 | Friction and torque reducing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843531U true CN201843531U (en) | 2011-05-25 |
Family
ID=44038424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205884843U Expired - Fee Related CN201843531U (en) | 2010-10-28 | 2010-10-28 | Friction and torque reducing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843531U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179464A (en) * | 2014-08-08 | 2014-12-03 | 陆威延 | Downhole tool used for righting and centralizing geological resource exploration drilling tool and capable of preventing drilling tool and sleeve from abrasion |
| CN111022015A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Horizontal well open hole staged fracturing pipe column well descending device |
-
2010
- 2010-10-28 CN CN2010205884843U patent/CN201843531U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179464A (en) * | 2014-08-08 | 2014-12-03 | 陆威延 | Downhole tool used for righting and centralizing geological resource exploration drilling tool and capable of preventing drilling tool and sleeve from abrasion |
| CN111022015A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Horizontal well open hole staged fracturing pipe column well descending device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20191028 |