CN104358527A - Large plunger type reducing centralizer - Google Patents
Large plunger type reducing centralizer Download PDFInfo
- Publication number
- CN104358527A CN104358527A CN201410543135.2A CN201410543135A CN104358527A CN 104358527 A CN104358527 A CN 104358527A CN 201410543135 A CN201410543135 A CN 201410543135A CN 104358527 A CN104358527 A CN 104358527A
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- plunger
- cylinder
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- 238000005553 drilling Methods 0.000 claims abstract description 43
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 34
- 238000007667 floating Methods 0.000 claims description 13
- 238000009826 distribution Methods 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 8
- 230000036346 tooth eruption Effects 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 10
- 101100495256 Caenorhabditis elegans mat-3 gene Proteins 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 6
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000001360 synchronised effect Effects 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
- 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
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a large plunger type reducing centralizer for directional drilling of a large-size well section. The centralizer solves the problem of high trip frequency of a directional drilling technology of the large-size well section. The invention adopts the technical scheme that the upper part of a main barrel is in threaded connection with an upper connector; the lower part of the main barrel is in threaded connection with a lower connector; six plungers are mounted on a plunger seat; six plunger holes are axially formed in a stepped surface of the main barrel; the six plungers are arranged in the six plunger holes respectively; six through holes are radially formed in the main barrel; six centralizing cylinders and six centralizing cylinder mandrels are mounted in the six radial through holes of the main barrel respectively; a centralizing body is fixedly connected with the two centralizing cylinders in the same phase circumferentially with screws a; one end of an upper connecting rod is articulated with an upper sliding sleeve; the other end of the upper connecting rod is articulated with the upper end of the centralizing body; one end of a lower connecting rod is articulated with a lower sliding sleeve; the other end of the lower connecting rod is articulated with the lower end of the centralizing body; and the main barrel is internally provided with six oil inlet runners. three oil drain runners and six well drilling fluid branch runners. The centralizer is large in reducing scope and reliable in structure.
Description
Technical field
The present invention relates to a kind of large diameter-changing centering guide of plunger type for large scale well section directed drilling.
Background technology
Along with the development of petroleum industry; Reservoir Development gets more and more and adopts directed-drilling technique; the petroleum resources adopting directed-drilling technique that ground and underground condition can be made to be restricted obtains economy, effectively develops; oil and gas production can be increased substantially and reduce drilling cost; be conducive to conservation of nature environment, there is significant economic benefit and social benefit.
In directed-drilling technique, deflecting, hold angle and drop angle are main activitiess, and engineering adopts drilling, change that drill set is incompatible realizes this activities.Centralizer is the core component in this drilling assembly, trips out time and the financial cost that different centralizer meeting at substantial installed by drilling tool at every turn.In recent years, in deep-well and ultradeep well, large scale well section is more and more longer, and centralizer size is also increasing, compares conventional well section, adopts the technique of directed-drilling technique more complicated in large scale well section.The present invention designs a kind of large diameter-changing centering guide, changing large scale well section drilling assembly, greatly reducing the rountrip number of times in directed drilling process by controlling pump pressure.
Summary of the invention
The object of the invention is: in order to realize changing large scale well section drilling assembly, reduce the rountrip number of times in directed drilling process, spy provides a kind of plunger type large diameter-changing centering guide.
In order to achieve the above object, the present invention is by the following technical solutions: the large diameter-changing centering guide of a kind of plunger type, is made up of top connection, jump ring, plunger mat, plunger, upper sliding sleeve, upper connecting rod, righting cylinder mandrel, righting cylinder, main cylinder, centralizer body, cutting teeth, screw a, lower link, floating piston, low sleeve, spring, wiper plug, lower contact, screw b, oil sealing seat, its architectural feature is: main cylinder top is provided with a step, step surface axially arranges six plunger holes, six plunger holes are uniformly distributed at circumferencial direction, six plungers are inserted in main cylinder six plunger holes respectively, plunger upper part is provided with a reduced diameter section, reduced diameter section is provided with annular groove, plunger mat is a ringlike round plate, plunger mat circumferencial direction evenly arranges six through holes, the reduced diameter section of six plungers inserts plunger mat six through holes respectively, and jump ring is arranged in the annular groove of plunger reduced diameter section, top connection bottom and main cylinder screwed connection, top and well drilling pipe column screwed connection, main cylinder radial direction is provided with six through holes, six radial direction through hole axile displacement, adjacent two through hole circumferencial directions are 120 ° of distributions, radial direction through hole inside is provided with two-stage step, righting cylinder one end is closed, this end face is provided with tapped blind hole, other end arranged outside has raised step, righting cylinder mandrel one end arranged outside has raised step, the other end inserts righting tube inner chamber, the contact surface sealing ring of righting cylinder mandrel and righting cylinder seals, six righting cylinders and six righting cylinder mandrels are arranged in main cylinder six radial direction through hole respectively, the contact surface sealing ring of righting cylinder and main cylinder through hole seals, the contact surface sealing ring of righting cylinder mandrel and main cylinder through hole seals, the large end of main cylinder radial direction through hole and the screwed connection of oil sealing seat, oil sealing seat is provided with a through hole, through hole one end is provided with screw thread, oil sealing block hole and screw b screwed connection, main cylinder lower end outer rim arranges a ring-shaped step, be provided with screw thread inside step to be connected with lower contact, the contact surface sealing ring of main cylinder and lower contact seals, main cylinder is provided with the large end that six oil-feed runners are communicated with six plunger hole bottom surfaces and six radial direction through hole respectively, main cylinder axially arranges three oil extraction flow passage main cylinder upper stage terraces and lower surface, three oil extraction runners are each passed through the reduced diameter section of same phase radial direction through hole, main cylinder arranges six drilling fluid branch flow passage and is communicated with main cylinder lower end annular step end face and top inner chamber, the section area sum of six drilling fluid branch flow passage equals center flow channels section area, six drilling fluid branch flow passage spatially with six radial direction through hole are non-intersect, lower contact bottom and well drilling pipe column screwed connection, lower contact top is provided with a step, and step end face is provided with a ring annular groove, and lower contact arranges six drilling fluid branch flow passage connected ring connected in stars and lower lumen, floating piston and lower contact inner chamber matched in clearance, fitting face sealing ring seals, lower contact inner chamber inserted by spring, be arranged in compressive state on floating piston, wiper plug and the screwed connection of lower contact inner chamber, lower contact radial direction is provided with three through holes and is communicated with cavity space inside and outside lower contacts, and three through hole circumferences are uniformly distributed, three through holes and lower contact six drilling fluid branch flow passage non-intersect, centralizer body is fixedly connected with two righting cylinder screw a of circumferential same phase respectively, upper sliding sleeve outer wall is provided with three rocker bar bearings, three rocker bar bearing locus distributions distribute consistent with radial direction through hole locus, three, main cylinder top, upper sliding sleeve and top connection matched in clearance, upper sliding sleeve can be free to slide on top connection surface, three upper connecting rod one end are hinged with upper sliding sleeve three rocker bar bearings respectively, the other end respectively with three centralizer body upper end thereof, low sleeve outer wall is provided with three rocker bar bearings, three rocker bar bearing locus distributions distribute consistent with radial direction through hole locus, three, main cylinder bottom, low sleeve and lower contact matched in clearance, low sleeve can be free to slide on lower contact surface, three lower link one end are hinged with low sleeve three rocker bar bearings respectively, the other end is hinged with three centralizer body lower ends respectively, upper connecting rod, centralizer body and lower link are all inlaid with cutting teeth.
The invention has the beneficial effects as follows: (1) this centralizer reducing scope is large, and after reducing, maximum gauge is more than the twice of maximum gauge before reducing; (2) this centralizer six righting cylinder synchronized movement, reducing process uprighting force is stablized; (3) this centralizer adopts hydraulic driving mode, and down-hole controls simple and reliable; (4) in rountrip process, there is shear action to the borehole wall, effectively avoid card to bury accident.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of plunger type of the present invention large diameter-changing centering guide righting cylinder softened state;
Fig. 2 is the structural representation of a kind of plunger type of the present invention large diameter-changing centering guide righting cylinder retracted state;
Fig. 3 is Figure 1A-A cross-sectional view;
Fig. 4 is Fig. 2 B-B cross-sectional view;
Fig. 5 is Fig. 2 C-C cross-sectional view;
Fig. 6 is Fig. 2 D-D cross-sectional view;
Fig. 7 is Fig. 2 E-E cross-sectional view;
In figure: 1. top connection, 2. jump ring, 3. plunger mat, 4. plunger, 5. upper sliding sleeve, 6. go up connecting rod, 7. righting cylinder mandrel, 8. righting cylinder, 9. main cylinder, 10. centralizer body, 11. cutting teeths, 12. screw a, 13. lower links, 14. floating pistons, 15. low sleeves, 16. springs, 17. wiper plugs, 18. lower contacts, 19. screw b, 20. oil sealing seats
Detailed description of the invention
As depicted in figs. 1 and 2, the large diameter-changing centering guide of a kind of plunger type of the present invention, comprises top connection 1, jump ring 2, plunger mat 3, plunger 4, upper sliding sleeve 5, upper connecting rod 6, righting cylinder mandrel 7, righting cylinder 8, main cylinder 9, centralizer body 10, cutting teeth 11, screw a12, lower link 13, floating piston 14, low sleeve 15, spring 16, wiper plug 17, lower contact 18, screw b19, oil sealing seat 20, its architectural feature is: main cylinder 9 top is provided with a step, step surface axially arranges six plunger holes, six plunger holes are uniformly distributed at circumferencial direction, six plungers 4 are inserted in main cylinder 9 six plunger holes respectively, plunger 4 top is provided with a reduced diameter section, reduced diameter section is provided with annular groove, plunger mat 3 is a ringlike round plate, plunger mat 3 circumferencial direction evenly arranges six through holes, the reduced diameter section of six plungers 4 inserts plunger mat 3 six through holes respectively, and jump ring 2 is arranged in the annular groove of plunger 4 reduced diameter section, top connection 1 bottom and main cylinder 9 screwed connection, top and well drilling pipe column screwed connection, main cylinder 9 radial direction is provided with six through holes, six radial direction through hole axile displacement, adjacent two radial direction through hole circumferencial directions are 120 ° of distributions, righting cylinder 8 one end is closed, this end face is provided with tapped blind hole, other end arranged outside has raised step, righting cylinder mandrel 7 one end arranged outside has raised step, the other end inserts righting cylinder 8 inner chamber, the contact surface sealing ring of righting cylinder mandrel 7 and righting cylinder 8 seals, six righting cylinders 8 and six righting cylinder mandrels 7 are arranged in main cylinder 9 six radial direction through hole respectively, righting cylinder 8 seals with the contact surface sealing ring of main cylinder 9 radial direction through hole, righting cylinder mandrel 7 seals with the contact surface sealing ring of main cylinder 9 radial direction through hole, the large end of main cylinder 9 radial direction through hole and oil sealing seat 20 screwed connection, oil sealing seat 20 is provided with axially extending bore, through hole one end is provided with screw thread, oil sealing seat 20 through hole and screw b19 screwed connection, main cylinder 9 lower end outer rim arranges a ring-shaped step, be provided with screw thread inside step to be connected with lower contact 18, main cylinder 9 seals with the contact surface sealing ring of lower contact 18, main cylinder 9 is provided with the large end that six oil-feed runner 9a are communicated with six plunger hole bottom surfaces and six radial direction through hole respectively, main cylinder 9 axially arranges three oil extraction runner 9b and is communicated with main cylinder 9 upper stage terrace and lower surface, three oil extraction runner 9b are each passed through the reduced diameter section of same phase radial direction through hole, main cylinder 9 arranges six drilling fluid branch flow passage 9c and is communicated with main cylinder 9 lower end annular step end face and top inner chamber, the section area sum of six drilling fluid branch flow passage 9c equals center flow channels section area, six drilling fluid branch flow passage 9c spatially with six radial direction through hole are non-intersect, lower contact 18 bottom and well drilling pipe column screwed connection, lower contact 18 top is provided with a step, and step end face is provided with a ring annular groove, and lower contact 18 arranges six drilling fluid branch flow passage 18a connected ring connected in stars and lower lumen, floating piston 14 and lower contact 18 inner chamber matched in clearance, the fitting face sealing ring of floating piston 14 and lower contact 18 inner chamber seals, lower contact 18 inner chamber inserted by spring 16, be arranged on floating piston 14 in compressive state, wiper plug 17 and the screwed connection of lower contact 18 inner chamber, lower contact 18 radial direction is provided with three through holes and is communicated with cavity space inside and outside lower contact 18, and three through hole circumferences are uniformly distributed, centralizer body 10 is fixedly connected with two righting cylinder 8 screw a12 of circumferential same phase respectively, upper sliding sleeve 5 outer wall is provided with three rocker bar bearings, three rocker bar bearing locus distributions distribute consistent with radial direction through hole locus, three, main cylinder 9 top, upper sliding sleeve 5 and top connection 1 matched in clearance, three upper connecting rod 6 one end are hinged with upper sliding sleeve 5 three rocker bar bearings respectively, the other end respectively with three centralizer body 10 upper end thereof, low sleeve 15 outer wall is provided with three rocker bar bearings, three rocker bar bearing locus distributions distribute consistent with radial direction through hole locus, three, main cylinder 9 bottom, low sleeve 15 and lower contact 18 matched in clearance, three lower link 13 one end are hinged with low sleeve 15 3 rocker bar bearings respectively, the other end is hinged with three centralizer body 10 lower ends respectively, upper connecting rod 6, centralizer body 10 and lower link 13 are all inlaid with cutting teeth 11.
As shown in Figure 3 and Figure 6, the main cylinder 9 radial direction through hole inside of the large diameter-changing centering guide of a kind of plunger type of the present invention is provided with two-stage step, righting cylinder 8 one end is closed, this end screw a12 is fixedly connected with centralizer body 10, other end arranged outside has raised step, step outer rim is provided with logical oil groove, righting cylinder mandrel 7 one end arranged outside has raised step, the other end inserts righting cylinder 8 inner chamber, the contact surface sealing ring of righting cylinder mandrel 7 and righting cylinder 8 seals, righting cylinder 8 and righting cylinder mandrel 7 are arranged in main cylinder 9 radial direction through hole, righting cylinder 8 seals with the contact surface sealing ring of main cylinder 9 radial direction through hole, righting cylinder mandrel 7 seals with the contact surface sealing ring of main cylinder 9 radial direction through hole, the large end of main cylinder 9 radial direction through hole and oil sealing seat 20 screwed connection, oil sealing seat 20 is provided with axially extending bore, through hole one end is provided with screw thread, oil sealing seat 20 through hole and screw b19 screwed connection.
As Fig. 4, shown in Fig. 5 and Fig. 6, the step surface of the main cylinder 9 of the large diameter-changing centering guide of a kind of plunger type of the present invention axially arranges six plunger holes, six plunger holes are uniformly distributed at circumferencial direction, main cylinder 9 is provided with the large end that six oil-feed runner 9a are communicated with six plunger hole bottom surfaces and six radial direction through hole respectively, main cylinder 9 axially arranges three oil extraction runner 9b and is communicated with main cylinder upper stage terrace and lower surface, three oil extraction runner 9b are each passed through the reduced diameter section of same phase radial direction through hole, main cylinder 9 arranges six drilling fluid branch flow passage 9c and is communicated with main cylinder 9 lower end annular step end face and top inner chamber, the section area sum of six drilling fluid branch flow passage 9c equals center flow channels section area, six drilling fluid branch flow passage 9c spatially with six radial direction through hole are non-intersect.
As shown in Figure 7, the large diameter-changing centering guide of a kind of plunger type of the present invention lower contact 18 six drilling fluid branch flow passage 18a connected ring connected in stars and lower lumen are set, lower contact 18 radial direction is provided with three through holes and is communicated with cavity space inside and outside lower contact 18, three through hole circumferences are uniformly distributed, three through holes and lower contact 18 6 drilling fluid branch flow passage 18a non-intersect.
The operating principle of the large diameter-changing centering guide of a kind of plunger type of the present invention is: under lower going-into-well of the present invention, original state righting cylinder 8 is regained, strengthen borehole pump discharge capacity, due to the reducing pressure by regulating flow effect of drilling fluid branch flow passage 9c, the thrust acted in plunger mat 3 is increased, after reaching enough discharge capacities, plunger mat 3 moves downward, plunger 4 compresses hydraulic oil in main cylinder 9 plunger hole, hydraulic oil is through main cylinder 9 oil-feed runner 9a to the large end motion of main cylinder 9 radial direction through hole, and righting cylinder 8 and righting cylinder mandrel 7 outwards overhang under the effect of hydraulic oil; Plunger mat 3 moves downward in process, and the hydraulic oil between main cylinder 9 upper step end face and plunger mat 3 enters lower contact 18 inner chamber through main cylinder 9 oil drain passage 9b, and floating piston 14 moves downward, Compress Spring 16; After termination of pumping, drilling liquid pressure declines, under the effect of spring 16 elastic force, floating piston 14 moves upward, lower contact 18 intracavity liquid force feed promotes plunger mat 3 through main cylinder 9 oil drain passage 9b and moves upward, the large end hydraulic oil of main cylinder 9 radial direction through hole enters in main cylinder 9 plunger hole through main cylinder 9 oil inlet passage 9a, and righting cylinder 8 and righting cylinder mandrel 7 radial direction are regained; Turn on pump increase pump delivery again, can realize righting cylinder 8 after reaching a fixed displacement again and righting cylinder mandrel 7 outwards overhangs under the effect of hydraulic oil, thus achieves the object adopting the start stop mode of pump to realize the reducing on a large scale of stabilizer.
Claims (4)
1. the large diameter-changing centering guide of plunger type, it comprises top connection (1), jump ring (2), plunger mat (3), plunger (4), upper sliding sleeve (5), upper connecting rod (6), righting cylinder mandrel (7), righting cylinder (8), main cylinder (9), centralizer body (10), cutting teeth (11), screw a (12), lower link (13), floating piston (14), low sleeve (15), spring (16), wiper plug (17), lower contact (18), screw b (19), oil sealing seat (20), it is characterized in that: top connection (1) bottom and main cylinder (9) screwed connection, top and well drilling pipe column screwed connection, main cylinder (9) top is provided with a step, step surface axially arranges six plunger holes, six plunger holes are uniformly distributed at circumferencial direction, six plungers (4) are inserted in main cylinder (9) six plunger holes respectively, plunger (4) top is provided with a reduced diameter section, reduced diameter section is provided with annular groove, plunger mat (3) is a ringlike round plate, plunger mat (3) circumferencial direction evenly arranges six through holes, the reduced diameter section of six plungers (4) inserts in plunger mat (3) six through holes respectively, jump ring (2) is arranged in the annular groove of plunger (4) reduced diameter section, main cylinder (9) radial direction is provided with six through holes, six radial direction through hole inside are provided with two-stage step, six righting cylinders (8) and six righting cylinder mandrels (7) are arranged in main cylinder (9) six radial direction through hole respectively, the large end of main cylinder (9) radial direction through hole and oil sealing seat (20) screwed connection, oil sealing seat (20) is provided with axially extending bore, through hole one end is provided with screw thread, oil sealing seat (20) through hole and screw b (19) screwed connection, main cylinder (9) lower end outer rim arranges a ring-shaped step, is provided with screw thread and is connected with lower contact (18) inside step, and main cylinder (9) seals with the contact surface sealing ring of lower contact (18), floating piston (14) and lower contact (18) inner chamber matched in clearance, fitting face sealing ring seals, lower contact (18) inner chamber inserted by spring (16), be arranged on floating piston (14) in compressive state, wiper plug (17) and lower contact (18) inner chamber screwed connection, lower contact (18) bottom and well drilling pipe column screwed connection, centralizer body (10) is fixedly connected with screw a (12) with two righting cylinders (8) of circumferential same phase respectively, upper sliding sleeve (5) outer wall is provided with three rocker bar bearings, upper sliding sleeve (5) and top connection (1) matched in clearance, upper connecting rod (6) one end and upper sliding sleeve (5) rocker bar bearing hinged, the other end respectively with centralizer body (10) upper end thereof, low sleeve (15) outer wall is provided with three rocker bar bearings, low sleeve (15) and lower contact (18) matched in clearance, lower link (13) one end and low sleeve (15) rocker bar bearing hinged, the other end is hinged with centralizer body (10) lower end respectively, upper connecting rod (6), centralizer body (10) and lower link (13) are all inlaid with cutting teeth (11).
2. the large diameter-changing centering guide of plunger type according to claim 1, it is characterized in that: described main cylinder (9) radial direction is provided with six through holes, six radial direction through hole axile displacement, adjacent two radial direction through hole circumferencial directions are 120 ° of distributions, and six radial direction through hole inside are provided with two-stage step; Righting cylinder (8) one end is closed, and this end screw a (12) is fixedly connected with centralizer body (10), and other end arranged outside has raised step, and step outer rim is provided with logical oil groove; Righting cylinder mandrel (7) one end arranged outside has raised step, and the other end inserts righting cylinder (8) inner chamber, and the contact surface sealing ring of righting cylinder mandrel (7) and righting cylinder (8) seals; Righting cylinder (8) and righting cylinder mandrel (7) are arranged in main cylinder (9) radial direction through hole, righting cylinder (8) seals with the contact surface sealing ring of main cylinder (9) radial direction through hole, and righting cylinder mandrel (7) seals with the contact surface sealing ring of main cylinder (9) radial direction through hole.
3. the large diameter-changing centering guide of plunger type according to claim 1, it is characterized in that: described main cylinder (9) is provided with the large end that six oil-feed runners (9a) are communicated with six plunger hole bottom surfaces and six radial direction through hole respectively, axially arrange three oil extraction runners (9b) is communicated with upper stage terrace and lower surface to main cylinder (9), three oil extraction runners (9b) are each passed through the reduced diameter section of same phase radial direction through hole, main cylinder (9) arranges six drilling fluid branch flow passage (9c) and is communicated with lower end annular step end face and top inner chamber, the section area sum of six drilling fluid branch flow passage (9c) equals center flow channels section area, six drilling fluid branch flow passage (9c) spatially with six radial direction through hole are non-intersect, lower contact (18) top is provided with a step, step end face is provided with a ring annular groove, lower contact (18) arranges six drilling fluid branch flow passage (18a) connected ring connected in stars and lower lumen, lower contact (18) radial direction is provided with three through holes and is communicated with the inside and outside cavity space of lower contact (18), three through hole circumferences are uniformly distributed, three through holes and lower contact (18) six drilling fluid branch flow passage (18a) non-intersect.
4. the large diameter-changing centering guide of plunger type according to claim 1, it is characterized in that: described upper sliding sleeve (5) outer wall is provided with three rocker bar bearings, three rocker bar bearing locus distributions distribute consistent with radial direction through hole locus, three, main cylinder (9) top; Low sleeve (15) outer wall is provided with three rocker bar bearings, and three rocker bar bearing locus distributions distribute consistent with radial direction through hole locus, three, main cylinder (9) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410543135.2A CN104358527B (en) | 2014-10-15 | 2014-10-15 | A kind of big diameter-changing centering guide of plunger type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410543135.2A CN104358527B (en) | 2014-10-15 | 2014-10-15 | A kind of big diameter-changing centering guide of plunger type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104358527A true CN104358527A (en) | 2015-02-18 |
| CN104358527B CN104358527B (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410543135.2A Expired - Fee Related CN104358527B (en) | 2014-10-15 | 2014-10-15 | A kind of big diameter-changing centering guide of plunger type |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194055A (en) * | 2015-04-30 | 2016-12-07 | 中国石油天然气股份有限公司 | Centering guide |
| CN106930698A (en) * | 2017-05-12 | 2017-07-07 | 西南石油大学 | A kind of tool-face positioner |
| CN110924876A (en) * | 2019-12-18 | 2020-03-27 | 无棣荣业网具有限公司 | A but, reducing centralizer for pneumatic drill spraying |
| CN111206885A (en) * | 2020-03-26 | 2020-05-29 | 山东省地勘局第二水文地质工程地质大队(山东省鲁北地质工程勘察院) | Anti-inclination stable centralizer for deep hole drilling |
| CN113389494A (en) * | 2021-06-25 | 2021-09-14 | 中煤科工集团西安研究院有限公司 | Variable-diameter type straightening drilling tool assembly and hole forming method |
| CN115613968A (en) * | 2022-12-19 | 2023-01-17 | 中国石油集团川庆钻探工程有限公司 | High build rate rotary steering drilling tool assembly with reducing centralizer and use method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2256768C1 (en) * | 2004-02-24 | 2005-07-20 | ООО Фирма "НСЛ" | Universal mechanical centralizing device |
| CN202284453U (en) * | 2011-10-12 | 2012-06-27 | 中国石油化工股份有限公司 | Hydraulic expansion casing centralizing nipple |
| CN102536133A (en) * | 2012-02-09 | 2012-07-04 | 东营市健源工贸有限责任公司 | Hydraulic casing pipe centering device |
| CN103541666A (en) * | 2013-11-19 | 2014-01-29 | 西南石油大学 | Hydraulic variable-diameter centralizer |
-
2014
- 2014-10-15 CN CN201410543135.2A patent/CN104358527B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2256768C1 (en) * | 2004-02-24 | 2005-07-20 | ООО Фирма "НСЛ" | Universal mechanical centralizing device |
| CN202284453U (en) * | 2011-10-12 | 2012-06-27 | 中国石油化工股份有限公司 | Hydraulic expansion casing centralizing nipple |
| CN102536133A (en) * | 2012-02-09 | 2012-07-04 | 东营市健源工贸有限责任公司 | Hydraulic casing pipe centering device |
| CN103541666A (en) * | 2013-11-19 | 2014-01-29 | 西南石油大学 | Hydraulic variable-diameter centralizer |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194055A (en) * | 2015-04-30 | 2016-12-07 | 中国石油天然气股份有限公司 | Centering guide |
| CN106194055B (en) * | 2015-04-30 | 2019-08-02 | 中国石油天然气股份有限公司 | Centering guide |
| CN106930698A (en) * | 2017-05-12 | 2017-07-07 | 西南石油大学 | A kind of tool-face positioner |
| CN110924876A (en) * | 2019-12-18 | 2020-03-27 | 无棣荣业网具有限公司 | A but, reducing centralizer for pneumatic drill spraying |
| CN110924876B (en) * | 2019-12-18 | 2021-07-30 | 大庆市宏博晟达石油机械设备有限公司 | A but, reducing centralizer for pneumatic drill spraying |
| CN111206885A (en) * | 2020-03-26 | 2020-05-29 | 山东省地勘局第二水文地质工程地质大队(山东省鲁北地质工程勘察院) | Anti-inclination stable centralizer for deep hole drilling |
| CN113389494A (en) * | 2021-06-25 | 2021-09-14 | 中煤科工集团西安研究院有限公司 | Variable-diameter type straightening drilling tool assembly and hole forming method |
| CN115613968A (en) * | 2022-12-19 | 2023-01-17 | 中国石油集团川庆钻探工程有限公司 | High build rate rotary steering drilling tool assembly with reducing centralizer and use method thereof |
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| CN104358527B (en) | 2016-06-15 |
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