CN105604484A - Drag-reducing and torque-reducing device - Google Patents
Drag-reducing and torque-reducing device Download PDFInfo
- Publication number
- CN105604484A CN105604484A CN201511023510.1A CN201511023510A CN105604484A CN 105604484 A CN105604484 A CN 105604484A CN 201511023510 A CN201511023510 A CN 201511023510A CN 105604484 A CN105604484 A CN 105604484A
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- locking ring
- reducing
- thread
- threaded locking
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1085—Wear protectors; Blast joints; Hard facing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
A drag-reducing and torque-reducing device for a pipe string comprises a body, a sliding sleeve, cylindrical rollers, a threaded locking ring, a tightening screw, metal abrasion-proof gaskets and seal rings, wherein four spiral ridges are longitudinally and uniformly distributed on the outer surface of the sliding sleeve in the circumferential direction; the outer contour of a cross section of the sliding sleeve is elliptical; four circles of roller grooves are formed in the surface of the body in the circumferential direction, are fully filled with the rollers, and are matched with the sliding sleeve; the sliding sleeve sleeves the body; the seal rings are arranged at two ends of the part, connected with the body, of the sliding sleeve; the sliding sleeve is limited by a shoulder at the male buckle end of the body and the threaded locking ring mounted at the female buckle end of the body; the threaded locking ring is fastened with the tightening screw; the metal abrasion-proof gaskets are arranged between the sliding sleeve, and the body and the threaded locking ring. The drag-reducing and torque-reducing device has the advantages that the structural reliability is high; loss in a drilling torque transmission process can be reduced; abrasion on the pipe string is reduced; vortex motion of the pipe string can be reduced to a certain extent; the work efficiency is further improved.
Description
Technical field
The invention belongs to mechanical field, particularly a kind of drilling tool.
Background technology
In oil-gas field development, along with the progress of drilling technology, casing programme more sophisticated, drilling well and underThe tubing strings such as sleeve pipe are lowered in operation, and tubing string will bear larger frictional resistance, thereby makes: on (1), putWhile putting tubing string, resistance is large, load transfer difficulty in drilling process; (2) drill string moment of friction is large, reduces machineryDrilling speed, moment of torsion transmits difficulty; (3) moment of torsion is crossed conference and is caused tubing string fracture; (4) wearing and tearing of drilling rod and sleeve pipeSeriously, bring heavy losses to oil field.
Therefore study a kind of instrument that can reduce frictional resistance and moment of torsion, significant.
Summary of the invention
The object of the present invention is to provide one can reduce better the tubing string such as drilling well and setting of casing and be lowered to operationIn the casing drag reduction sound damper of suffered frictional resistance and moment of torsion.
Technical scheme of the present invention is as follows:
The present invention includes body, sliding sleeve, cylindrical roller, thread-locking ring, screw, metal anti-abrasion padCircle and sealing ring, wherein the outer surface of sliding sleeve is provided with along longitudinally four uniform scrolls of circumference, this sliding sleeveCross section outline is oval; Body surface is equipped with four circle roller grooves along circumference, in this roller groove, fills and rollsSon also coordinates with sliding sleeve, and it is external that sliding sleeve is enclosed within, and the two ends that are connected between sliding sleeve and body are provided with sealing ring;The thread-locking ring that sliding sleeve is installed by shoulder and box one end of body pin thread one end is respectively spacing, screw-threaded couplingRing is by screw tightening, and sliding sleeve and body, screw-threaded coupling interannular are provided with metal abrasionproof packing ring.
When work, the sliding sleeve scroll of this post drag reduction sound damper contacts with the borehole wall, has four groups between sliding sleeve and bodyCylindrical roller, organizes roller more and can reduce the contact stress on rolling element, and then improves fatigue life, and canTo bear extremely heavy radial load, in roller groove, be filled with lubricating grease, sliding sleeve is rotated relative to ontological idea of freedom,Thereby the frictional resistance between drill string and the borehole wall or sleeve pipe and the whirlpool of moment of torsion and drill string in drilling process are reducedMoving. Sliding sleeve scroll contacts with the borehole wall, makes a part of axial rub resistance promote the phase between sliding sleeve and bodyTo rotation, thereby reduce the axial rub resistance that tubing string advances in process. Scroll sliding sleeve outline is ellipse, and there is small size radial vibration in circle, makes the time of contact between tubing string and the borehole wall in borehole wall contact processReduce, thus further capable of reducing friction resistance and wearing and tearing.
The present invention compared with prior art tool has the following advantages:
Structural reliability is strong, can reduce the loss of creeping in moment of torsion transmittance process, reduces tubing string wearing and tearing, and can beReduce to a certain extent tubing string whirling motion, further increase work efficiency.
Brief description of the drawings
Fig. 1 is structural representation sketch of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the B-B cutaway view of Fig. 1.
In figure: 1-pin thread, 2-body, 3-sealing ring, 4-sliding sleeve, 5-cylindrical roller, 6-metal anti-abrasion padCircle, 7-screw, 8-box, 9-thread-locking ring.
Detailed description of the invention
In the casing drag reduction sound damper schematic diagram shown in Fig. 1, Fig. 2 and Fig. 3, the outer surface of sliding sleeve 4 is provided withAlong longitudinally four uniform scrolls of circumference, the cross section outline of this sliding sleeve is oval, as shown in Figure 2;Body 2 surfaces are equipped with four circle roller grooves along circumference, fill cylindrical roller 5 and join with sliding sleeve in this roller grooveClose, it is external that sliding sleeve is enclosed within, and the two ends that are connected between sliding sleeve and body are provided with sealing ring 3, and sliding sleeve is respectively by thisThe thread-locking ring 9 that install the shoulder of public 1 one end of body and box 8 one end is spacing, and thread-locking ring is by tighteningScrew 7 tightenings, sliding sleeve and body, screw-threaded coupling interannular are provided with metal abrasionproof packing ring 6.
This casing drag reduction sound damper can be installed between the underground work pipe columns such as two drilling rods, sleeve pipe, according to concrete workCondition, is optionally used.
Claims (1)
1. a casing drag reduction sound damper, it comprises body, sliding sleeve, cylindrical roller, thread-locking ring, tightDetermine screw, metal abrasionproof packing ring and sealing ring, it is characterized in that: the outer surface of described sliding sleeve is provided with along circumferenceLongitudinally four uniform scrolls, the cross section outline of this sliding sleeve is oval; Body surface is all established along circumferenceHave four circle roller grooves, fill roller and coordinate with sliding sleeve in this roller groove, it is external that sliding sleeve is enclosed within, sliding sleeve withThe two ends that connect between body are provided with sealing ring; Sliding sleeve is respectively by shoulder and box one end of body pin thread one endThe thread-locking ring of installing is spacing, and thread-locking ring is by screw tightening, sliding sleeve and body, screw-threaded couplingInterannular is provided with metal abrasionproof packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511023510.1A CN105604484A (en) | 2015-12-31 | 2015-12-31 | Drag-reducing and torque-reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511023510.1A CN105604484A (en) | 2015-12-31 | 2015-12-31 | Drag-reducing and torque-reducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105604484A true CN105604484A (en) | 2016-05-25 |
Family
ID=55984770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511023510.1A Pending CN105604484A (en) | 2015-12-31 | 2015-12-31 | Drag-reducing and torque-reducing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105604484A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664024A (en) * | 2017-11-01 | 2018-02-06 | 王立峰 | A kind of oil field anti-sticking sand control pipe |
| CN109931013A (en) * | 2019-05-04 | 2019-06-25 | 东北石油大学 | Heavy weight drill pipe with wellbore cleaning action |
| CN112761546A (en) * | 2021-02-04 | 2021-05-07 | 西南石油大学 | Drag-reducing and wear-resisting drill string protector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4428441A (en) * | 1979-04-04 | 1984-01-31 | Mobil Oil Corporation | Method and apparatus for reducing the differential pressure sticking tendency of a drill string |
| CN201517377U (en) * | 2009-11-07 | 2010-06-30 | 蔺亚 | Centralizer of rod part of sucker rod |
| CN201915857U (en) * | 2010-12-17 | 2011-08-03 | 中国石油集团长城钻探工程有限公司 | Torsion-reducing and wear-resisting joint |
| CN204386496U (en) * | 2014-12-18 | 2015-06-10 | 湖北领先石油科技股份有限公司 | A kind of mechanical type falls to rub to subtract turns round pipe nipple |
| CN104712261A (en) * | 2013-12-12 | 2015-06-17 | 西安西点软件有限责任公司 | Rotary groove type eccentric-wear-resisting device for pumping well |
-
2015
- 2015-12-31 CN CN201511023510.1A patent/CN105604484A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4428441A (en) * | 1979-04-04 | 1984-01-31 | Mobil Oil Corporation | Method and apparatus for reducing the differential pressure sticking tendency of a drill string |
| CN201517377U (en) * | 2009-11-07 | 2010-06-30 | 蔺亚 | Centralizer of rod part of sucker rod |
| CN201915857U (en) * | 2010-12-17 | 2011-08-03 | 中国石油集团长城钻探工程有限公司 | Torsion-reducing and wear-resisting joint |
| CN104712261A (en) * | 2013-12-12 | 2015-06-17 | 西安西点软件有限责任公司 | Rotary groove type eccentric-wear-resisting device for pumping well |
| CN204386496U (en) * | 2014-12-18 | 2015-06-10 | 湖北领先石油科技股份有限公司 | A kind of mechanical type falls to rub to subtract turns round pipe nipple |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664024A (en) * | 2017-11-01 | 2018-02-06 | 王立峰 | A kind of oil field anti-sticking sand control pipe |
| CN109931013A (en) * | 2019-05-04 | 2019-06-25 | 东北石油大学 | Heavy weight drill pipe with wellbore cleaning action |
| CN112761546A (en) * | 2021-02-04 | 2021-05-07 | 西南石油大学 | Drag-reducing and wear-resisting drill string protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160525 |
|
| RJ01 | Rejection of invention patent application after publication |