CN203594378U - Anti-abrasion connector - Google Patents
Anti-abrasion connector Download PDFInfo
- Publication number
- CN203594378U CN203594378U CN201320781261.2U CN201320781261U CN203594378U CN 203594378 U CN203594378 U CN 203594378U CN 201320781261 U CN201320781261 U CN 201320781261U CN 203594378 U CN203594378 U CN 203594378U
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- CN
- China
- Prior art keywords
- wearing bush
- abrasion
- wearing
- abrasion sleeve
- bush
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an anti-abrasion connector. The anti-abrasion connector comprises a connector body, an anti-abrasion sleeve, anti-abrasion sleeve clamping blocks and anti-abrasion sleeve installation bases. A groove is formed in the middle of the connector body. The anti-abrasion sleeve is arranged in the groove of the connector body. Sub-steps are arranged at the two ends of the anti-abrasion sleeve respectively. The anti-abrasion sleeve clamping blocks are placed on the sub-steps of the anti-abrasion sleeve. Installation grooves are formed in the two ends of the anti-abrasion sleeve respectively. The anti-abrasion sleeve installation bases are arranged in the installation grooves respectively and press the two ends of the anti-abrasion sleeve and the anti-abrasion sleeve clamping blocks. The anti-abrasion sleeve installation bases are fixedly connected with the anti-abrasion sleeve clamping blocks through screws. The anti-abrasion sleeve, the anti-abrasion sleeve clamping blocks and the anti-abrasion sleeve installation bases can freely rotate around the connector body. The anti-abrasion connector is simple in structure, low in manufacturing cost and capable of effectively reducing the friction torque of a drill stem; meanwhile, the drill stem and a sleeve can be protected, a hard metal object can be prevented from falling into a well, the service life of an underground tubular column is prolonged, and the well drilling cost is reduced.
Description
Technical field
The utility model relates to a kind of oil drilling downhole tool, is specifically related to the protection instrument of sleeve pipe, drill string.
Background technology
Current drilling mode be unable to do without rotary drilling and top drive drilling mouth, and these 2 kinds of drilling modes are all by ground and power rotates by drilling tool and passes to drill bit, thereby fractured rock. like this, having cased well section, drilling tool and sleeve pipe will produce friction, and drilling tool weares and teares in advance, casing wall attenuation is even worn out, seriously situation setting of casing is squeezed ruins, and affects the stability of the borehole wall, or the borehole wall is collapsed recklessly.If casing off is high-pressure oil-gas layer, can produce oil gas and invade, drilling fluid density is reduced, cause well kick accident; If casing off is low pressure pool gas-bearing formation, can produce leakage, pollute reservoir.At barefoot interval, drilling tool directly and rock stratum rub, the drilling tool that not only weares and teares, and affect borehole wall stability.When drilling tool rotation, drilling tool and sleeve pipe (or rock stratum) friction, has increased reaction torque, and the anti-group of square that especially kelly bar bears is very large, and the long-term phase of kelly bar bears excessive reaction torque early fatigue destruction can occur.
In recent years, along with the development of drilling technology, the continuous increase of drilling depth, well track increasingly sophisticated, causes the friction between drilling rod and sleeve pipe constantly to aggravate.Wearing and tearing between drilling rod and sleeve pipe can make tool joint wearing and tearing on the one hand, cause drilling rod getting up early to lose efficacy, the too high drilling tool fracture accident that also easily causes of drill string moment of torsion.Can make sleeve pipe heavy wear on the one hand in addition, impact drilling well, completion and mining operations quality and safety subsequently.In order to reduce the fretting wear of drilling rod and sleeve pipe, one of method often adopting is at present to adopt non-rotating blast joint.This blast joint is directly connected on drill string, is avoided the wearing and tearing of tool joint and sleeve pipe in joint location by the slip between metal outer sliding sleeve and mandrel, reduces drilling well moment of torsion simultaneously.Need special wearing layer but similarly prior art all exists, and adopt metal wearing bush also larger to the wearing and tearing of sleeve pipe, affect cementing quality and safety.
In order to solve above-mentioned deficiency of the prior art, the utility model proposes a kind of new solution.
Utility model content
The utility model overcomes the deficiencies in the prior art, provides one can effectively protect down-hole string, can reduce again the device of drill string rotating frictional resistance in drilling process, and this device meets underground work requirement, long service life.
For reaching foregoing invention object, the technical scheme that the utility model adopts is: a kind of blast joint is provided, has comprised joint body, wearing bush, wearing bush fixture block and wearing bush mount pad; Described joint body middle part has groove, and wearing bush arranges in the groove of joint body;
Wearing bush two ends are respectively arranged with sub-step, and wearing bush fixture block is put on the sub-step of wearing bush; Wearing bush two ends are respectively arranged with mounting groove, and wearing bush mount pad is separately positioned in mounting groove, push down wearing bush two ends and wearing bush fixture block; Wearing bush mount pad is connected by screw fastening with wearing bush fixture block; Described wearing bush, wearing bush fixture block, wearing bush mount pad can rotate by a solderless wrapped connection ontological idea of freedom.
Two end face surfacings of described groove have wear resistant nickel base alloy layer.
The two ends of described joint body are respectively arranged with drilling rod internal thread and the external screw thread of standard.
Described wearing bush cylindrical has the above deep-slotted chip breaker of twice.
Screw is fixedly connected with wearing bush mount pad is permanent.
Described wearing bush is fastened and is formed by two halves, and its horizontal profile becomes gear-like.
Described wearing bush adopts rich chromium cast iron or manganese alloy manufacture, and wearing bush surface surfacing has soft nickel base alloy layer, tungsten cobalt serial carbide alloy, ARNCO 100XT or ARNCO200XT.
Described wearing bush adopts nonmetallic wear-resistant material manufacture; Described nonmetallic wear-resistant material is cast stone, carborundum, alumina or zirconia ceramics.
In sum, blast joint tool provided by the utility model has the following advantages: simple in structure, manufacture cheap; can effectively lower drill string friction torque, protect drilling rod and sleeve pipe simultaneously, prevent that hard metal object from falling into down-hole; increase the life-span of down-hole string, reduce drilling cost.
Accompanying drawing explanation
Fig. 1 is structure chart of the present utility model;
Fig. 2 is the structure chart of joint body 1;
Fig. 3 is the utility model A-A sectional view;
Fig. 4 is the utility model B-B sectional view.
Wherein, 1, joint body; 2, wearing bush; 21, mounting groove; 22, sub-step; 23, deep-slotted chip breaker; 3, wearing bush fixture block; 4, wearing bush mount pad; 5, groove.
The specific embodiment
As shown in Figures 1 to 4, this blast joint, comprises joint body 1, wearing bush 2, wearing bush fixture block 3 and wearing bush mount pad 4; Described joint body 1 middle part has groove 5, and wearing bush 2 arranges in the groove 5 of joint body 1;
Wearing bush 2 two ends are respectively arranged with sub-step 22, and wearing bush fixture block 3 puts on the sub-step of wearing bush 2 22; Wearing bush 2 two ends are respectively arranged with mounting groove 21, and wearing bush mount pad 4 is separately positioned in mounting groove 21, push down wearing bush 2 two ends and wearing bush fixture block 3; Wearing bush mount pad 4 is connected by screw fastening with wearing bush fixture block 3; Described wearing bush 2, wearing bush fixture block 3, wearing bush mount pad 4 can freely rotate around joint body 1.
Two end face surfacings of described groove 5 have wear resistant nickel base alloy layer.
The two ends of described joint body 1 are respectively arranged with drilling rod internal thread and the external screw thread of standard.
Described wearing bush 2 cylindricals have the above deep-slotted chip breaker 23 of twice.For example six roads.Described wearing bush 2 is fastened and is formed by two halves, and its horizontal profile becomes gear-like.
Screw is fixedly connected with wearing bush mount pad 4 is permanent.For example by spot welding, screw is fixedly connected with wearing bush mount pad 4 is permanent.
Described wearing bush 2 adopts rich chromium cast iron or manganese alloy manufacture, and the surperficial surfacing of wearing bush 2 has soft nickel base alloy layer, tungsten cobalt serial carbide alloy, ARNCO 100XT or ARNCO200XT.
Described wearing bush 2 adopts nonmetallic wear-resistant material manufacture; Described nonmetallic wear-resistant material is cast stone, carborundum, alumina or zirconia ceramics.
The blast joint assembling is connected in drill string by drilling rod internal thread and the external screw thread of standard, rotatablely move together in company with drill string, in the time that drilling rod and casing wall come in contact, just touch sleeve pipe by larger-size wearing bush 2, because nonmetal wearing bush low-friction coefficient, self-lubricating property are good and soft, minimum with the friction factor of metal, and wearing bush 2 self can freely rotate around joint body 1, just be equivalent between joint body 1 and sleeve pipe, add a bearer ring, greatly reduced the frictional resistance of drill string rotating in drilling process.During simultaneously due to nonmetal wearing bush and Metal Contact, there is fabulous abrasion resistance.Therefore down-hole string drilling rod and sleeve pipe are worn and torn hardly, laboratory test and field trial prove, its wearing and tearing are almost nil.Greatly increase its application life.
Main thought of the present utility model, is in drilling assembly, this instrument to be installed in drillng operation, the friction torque of being convenient to protect down-hole string and reducing drill string.By the description to embodiment below; to more contribute to public understanding the utility model; but specific embodiment given applicant can't be considered as to the restriction to technical solutions of the utility model, any definition to parts or technical characterictic change and/or to overall structure do form and immaterial conversion all should be considered as the protection domain that the technical solution of the utility model limits.
Claims (8)
1. blast joint, is characterized in that: comprise joint body (1), wearing bush (2), wearing bush fixture block (3) and wearing bush mount pad (4); Described joint body (1) middle part has groove (5), and wearing bush (2) arranges in the groove (5) of joint body (1);
Wearing bush (2) two ends are respectively arranged with sub-step (22), and wearing bush fixture block (3) is put on the sub-step of wearing bush (2) (22); Wearing bush (2) two ends are respectively arranged with mounting groove (21), and wearing bush mount pad (4) is separately positioned in mounting groove (21), push down wearing bush (2) two ends and wearing bush fixture block (3); Wearing bush mount pad (4) is connected by screw fastening with wearing bush fixture block (3); Described wearing bush (2), wearing bush fixture block (3), wearing bush mount pad (4) can freely rotate around joint body (1).
2. blast joint according to claim 1, is characterized in that: two end face surfacings of described groove (5) have wear resistant nickel base alloy layer.
3. blast joint according to claim 1, is characterized in that: the two ends of described joint body (1) are respectively arranged with drilling rod internal thread and the external screw thread of standard.
4. blast joint according to claim 1, is characterized in that: described wearing bush (2) cylindrical has the above deep-slotted chip breaker of twice (23).
5. blast joint according to claim 1, is characterized in that: screw and permanent being fixedly connected with of wearing bush mount pad (4).
6. blast joint according to claim 1, is characterized in that: described wearing bush (2) is fastened and formed by two halves, and its horizontal profile becomes gear-like.
7. blast joint according to claim 1, it is characterized in that: described wearing bush (2) adopts rich chromium cast iron or manganese alloy manufacture, and the surperficial surfacing of wearing bush (2) has soft nickel base alloy layer, tungsten cobalt serial carbide alloy, ARNCO 100XT or ARNCO200XT.
8. blast joint according to claim 1, is characterized in that: described wearing bush (2) adopts nonmetallic wear-resistant material manufacture; Described nonmetallic wear-resistant material is cast stone, carborundum, alumina or zirconia ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320781261.2U CN203594378U (en) | 2013-12-03 | 2013-12-03 | Anti-abrasion connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320781261.2U CN203594378U (en) | 2013-12-03 | 2013-12-03 | Anti-abrasion connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203594378U true CN203594378U (en) | 2014-05-14 |
Family
ID=50675273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320781261.2U Withdrawn - After Issue CN203594378U (en) | 2013-12-03 | 2013-12-03 | Anti-abrasion connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203594378U (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 |
-
2013
- 2013-12-03 CN CN201320781261.2U patent/CN203594378U/en not_active Withdrawn - After Issue
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 | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140514 Effective date of abandoning: 20150902 |
|
| RGAV | Abandon patent right to avoid regrant |