CN103982134B - A kind of reverse circulation drilling well tool - Google Patents
A kind of reverse circulation drilling well tool Download PDFInfo
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- CN103982134B CN103982134B CN201410228385.7A CN201410228385A CN103982134B CN 103982134 B CN103982134 B CN 103982134B CN 201410228385 A CN201410228385 A CN 201410228385A CN 103982134 B CN103982134 B CN 103982134B
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- universal drive
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Abstract
The present invention relates to a kind of reverse circulation drilling well tool for drilling well coal-mining technique.It is low that it solves exploitation colliery, artificial tunnel efficiency, and personnel and asset of equipments are difficult to safely to ensure, direct circulation drilling well is mined and easily occurred collapsing problems such as causing bit freezing in annular space solid precipitation and coal seam.Its technical scheme is: stator case upper end and top connection screwed connection, lower end and the screwed connection of universal shaft housing upper end, cored screw lower end and the screwed connection of universal drive shaft joint; The universal drive shaft joint of the universal drive shaft assembly other end and the screwed connection of drive joint upper end, universal shaft housing lower end and shunting housing upper end screwed connection; Power transmission shaft upper end and the screwed connection of drive joint lower end, lower end and target drill screwed connection, transmission shaft shell upper end and shunting housing lower end screwed connection.Part drilling fluid enters power assembly from shunting housing central section through hole and drives cored screw to rotate, and drives drill bit to break coal; Another part drilling fluid carries coal grain and enters drilling tool center flow channels by drill bit from shaft bottom.
Description
Technical field
The present invention relates to a kind of reverse circulation drilling well tool for drilling well coal-mining technique.
Background technology
Depths, stratum is richly stored with coal resource, an important directions of deep formation coal development of resources necessarily future source of energy exploitation.Existing Coal Mining Technology is mainly developed as master with artificial underworkings, the most deeply can reach about 2000 ~ 2500m, but along with the increase of downhole temperature, work under bad environment, operating efficiency lower; Particularly gas is broken through, permeable and rock burst accident etc. happens occasionally, and seriously jeopardizes the personal safety of underground work personnel, causes mine and device damage.
Drilling well is mined as a kind of new technology of deep layer coal development of resources, will thoroughly solve the subject matter of artificial tunnel exploitation existence at present.Drilling well coal-mining technique uses for reference the correlation technique of oil gas drilling, and is the feature of solid phase for coal, designs special drilling equipment and instrument to meet the particular/special requirement of drilling well coal-mining technique.The coal that counterflush drilling realizes exploitation returns to ground from drill string center, and drilling well flow velocity in drill string center is high, and the low flow velocity comparing annular space is more easily taken coal and returned to ground, can effectively prevent Coal Seam Collapse from causing the generation of the accidents such as bit freezing.
For the technical requirements of drilling well coal-mining technique counterflush drilling, spy of the present invention provides a kind of reverse circulation drilling well tool.
Summary of the invention
The object of the invention is: in order to meet the requirement of drilling well coal mining crossover circulation technique, spy provides a kind of reverse circulation drilling well tool.
In order to achieve the above object, the present invention by the following technical solutions: a kind of reverse circulation drilling well tool, is made up of top connection, power assembly, universal drive shaft assembly, drive joint, filtering ring, rubber sleeve, shunting housing and driving-shaft assembly, power assembly comprises stator case, stator liner, cored screw, universal drive shaft assembly comprises universal drive shaft joint, disc spring, supporting seat, steel ball, commutation head, retaining ring, sealing shroud, universal drive shaft drive link, universal shaft housing, driving-shaft assembly comprises sliding bearing sleeve, transmission shaft shell, bearing string, power transmission shaft, its architectural feature is: the stator case upper end of power assembly and top connection screwed connection, the universal shaft housing upper end screwed connection of lower end and universal drive shaft assembly, cored screw lower end and the screwed connection of universal drive shaft joint, the universal drive shaft joint of the universal drive shaft assembly other end and the screwed connection of drive joint upper end, universal shaft housing lower end and shunting housing upper end screwed connection, the power transmission shaft upper end of driving-shaft assembly and the screwed connection of drive joint lower end, lower end and target drill screwed connection, transmission shaft shell upper end and shunting housing lower end screwed connection, in power assembly, stator liner is fixed on stator case inner chamber, and cored screw inserts stator liner inner chamber, in universal drive shaft assembly, universal drive shaft joint inner chamber is communicated with up and down, inner chamber top is provided with step, middle part circumference is evenly provided with eight semi arch keyways, bottom is provided with screw thread, disc spring is arranged on universal drive shaft joint inner chamber step, supporting seat is arranged in disc spring, supporting seat lower end is a hemispherical concave surface, inner chamber is communicated with up and down, commutation head upper end is a hemispherical convex surface, top circumference is evenly provided with eight hemispherical concave surfaces, bottom is provided with screw thread, inner chamber is communicated with up and down, eight steel balls are arranged on respectively in commutation eight hemispherical concave surfaces, commutation head inserts universal drive shaft joint inner chamber, its hemispherical convex surface and supporting seat hemispherical concave surface fit tightly, sealing shroud one end is enclosed within commutation head bottom, the other end inserts universal drive shaft joint inner chamber, retaining ring and the screwed connection of universal drive shaft joint, and press seal cover, universal drive shaft drive link inner chamber is communicated with up and down, the screwed connection of two ends screw thread respectively with two commutation head, in driving-shaft assembly, sliding bearing sleeve and bearing string are installed between transmission shaft shell and power transmission shaft, shunting housing central section circumference is evenly provided with 4 countersunk head through holes, jump-ring slot is provided with in countersunk head through hole, filtering ring is that inner homogeneous arranges the cylinder filtering aperture, filtering ring is arranged on countersunk head through hole step, fix with jump ring, rubber sleeve is arranged on drive joint step, fits with shunting housing in outside.
The invention has the beneficial effects as follows: (1) this reverse-circulating tool realizes counterflush drilling and takes coal; (2) automatically assignment of traffic is adjusted according to torque loads change; (3) adopt screw drive mode, mechanical efficiency is high; (4) well dynamic type of drive, facilitates directional drilling; (4) when effectively solving direct circulation drilling well, collapse the accidents such as the bit freezing that causes annular space solid precipitation and coal seam.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of reverse circulation drilling well tool of the present invention;
In figure: 1. top connection, 2. stator case, 3. stator liner, 4. cored screw, 5. power assembly, 6. universal drive shaft joint, 7. disc spring, 8. supporting seat, 9. steel ball, 10. commutate head, 11. retaining rings, 12. sealing shrouds, 13. universal drive shaft drive links, 14. universal shaft housings, 15. universal drive shaft assemblies, 16. drive joints, 17. filtering rings, 18. rubber sleeves, 19. shunting housings, 20. sliding bearing sleeves, 21. transmission shaft shell, 22. bearing strings, 23. power transmission shafts, 24. driving-shaft assemblies.
Detailed description of the invention
As shown in Figure 1, a kind of reverse circulation drilling well tool of the present invention, is made up of top connection 1, power assembly 5, universal drive shaft assembly 15, drive joint 16, filtering ring 17, rubber sleeve 18, shunting housing 19 and driving-shaft assembly 24, power assembly 5 comprises stator case 2, stator liner 3, cored screw 4, universal drive shaft assembly 15 comprises universal drive shaft joint 6, disc spring 7, supporting seat 8, steel ball 9, commutation 10, retaining ring 11, sealing shroud 12, universal drive shaft drive link 13, universal shaft housing 14, driving-shaft assembly 24 comprises sliding bearing sleeve 20, transmission shaft shell 21, bearing string 22, power transmission shaft 23, its architectural feature is: stator case 2 upper end of power assembly 5 and top connection 1 screwed connection, the universal shaft housing 14 upper end screwed connection of lower end and universal drive shaft assembly 15, cored screw 4 lower end and universal drive shaft joint 6 screwed connection, universal drive shaft joint 6 and the drive joint 16 upper end screwed connection of universal drive shaft assembly 15 other end, universal shaft housing 14 lower end and the upper end screwed connection of shunting housing 19, power transmission shaft 23 upper end of driving-shaft assembly 24 and drive joint 16 lower end screwed connection, lower end and target drill screwed connection, transmission shaft shell 21 upper end and the lower end screwed connection of shunting housing 19, in power assembly 5, stator liner 3 is fixed on stator case 2 inner chamber, and cored screw 4 inserts stator liner 3 inner chamber, in universal drive shaft assembly 15, universal drive shaft joint 6 inner chamber is communicated with up and down, inner chamber top is provided with step, middle part circumference is evenly provided with eight semi arch keyways, bottom is provided with screw thread, disc spring 7 is arranged on universal drive shaft joint 6 inner chamber step, supporting seat 8 is arranged in disc spring 7, supporting seat 8 lower end is a hemispherical concave surface, inner chamber is communicated with up and down, commutation 10 upper end are hemispherical convex surfaces, top circumference is evenly provided with eight hemispherical concave surfaces, bottom is provided with screw thread, inner chamber is communicated with up and down, eight steel balls 9 are arranged on respectively in commutation 10 8 hemispherical concave surfaces, universal drive shaft joint 6 inner chamber is inserted in commutation 10, its hemispherical convex surface and supporting seat 8 hemispherical concave surface fit tightly, sealing shroud 12 one end is enclosed within commutation 10 bottom, the other end inserts universal drive shaft joint 6 inner chamber, retaining ring 11 and universal drive shaft joint 6 screwed connection, and press seal cover 12, universal drive shaft drive link 13 inner chamber is communicated with up and down, two ends screw thread respectively with two commutation 10 screwed connection, in driving-shaft assembly 24, sliding bearing sleeve 20 and bearing string 22 are installed between transmission shaft shell 21 and power transmission shaft 23, in the middle part of shunting housing 19, circumference is evenly provided with four countersunk head through holes, jump-ring slot is provided with in countersunk head through hole, filtering ring 17 is that inner homogeneous arranges the cylinder filtering aperture, filtering ring 17 is arranged on countersunk head through hole step, fix with jump ring, rubber sleeve 18 is arranged on drive joint 16 step, fits with shunting housing 19 in outside.
The operating principle of a kind of reverse circulation drilling well tool of the present invention is: under enter this reverse circulation drilling well tool to coal seam, and apply certain the pressure of the drill, drilling fluid is pumped into from drill string and borehole wall annular space, part drilling fluid is by countersunk head through hole in the middle part of shunting housing 19, the filtration aperture of ring 17 enters this counterflush drilling tool interior annular channel after filtration, enter the annular seal space formed between the stator liner 3 of power assembly 5 and cored screw 4, cored screw 4 is driven to rotate, final driving bottom target drill rotates and carries out fragmentation to coal seam, another part drilling fluid carries broken coal grain from shaft bottom by target drill inner chamber and enters this counterflush drilling tool focus runner, two parts fluid finally converges in power assembly 5 outlet, jointly carry coal grain and return to ground from drill string center.
Claims (1)
1. a reverse circulation drilling well tool, is made up of top connection (1), power assembly (5), universal drive shaft assembly (15), drive joint (16), filtering ring (17), rubber sleeve (18), shunting housing (19) and driving-shaft assembly (24), power assembly (5) comprises stator case (2), stator liner (3), cored screw (4), universal drive shaft assembly (15) comprises universal drive shaft joint (6), disc spring (7), supporting seat (8), steel ball (9), commutation head (10), retaining ring (11), sealing shroud (12), universal drive shaft drive link (13), universal shaft housing (14), driving-shaft assembly (24) comprises sliding bearing sleeve (20), transmission shaft shell (21), bearing string (22), power transmission shaft (23), it is characterized in that: stator case (2) upper end of power assembly (5) and top connection (1) screwed connection, universal shaft housing (14) the upper end screwed connection of lower end and universal drive shaft assembly (15), cored screw (4) lower end and universal drive shaft joint (6) screwed connection, universal drive shaft joint (6) and drive joint (16) the upper end screwed connection of universal drive shaft assembly (15) other end, universal shaft housing (14) lower end and shunting housing (19) upper end screwed connection, power transmission shaft (23) upper end of driving-shaft assembly (24) and drive joint (16) lower end screwed connection, lower end and target drill screwed connection, transmission shaft shell (21) upper end and shunting housing (19) lower end screwed connection, in power assembly (5), stator liner (3) is fixed on stator case (2) inner chamber, and cored screw (4) inserts stator liner (3) inner chamber, in driving-shaft assembly (24), sliding bearing sleeve (20) and bearing string (22) are installed between transmission shaft shell (21) and power transmission shaft (23), in universal drive shaft assembly (15), universal drive shaft joint (6) inner chamber is communicated with up and down, inner chamber top is provided with step, middle part circumference is evenly provided with eight semi arch keyways, bottom is provided with screw thread, disc spring (7) is arranged on universal drive shaft joint (6) inner chamber step, supporting seat (8) is arranged in disc spring (7), supporting seat (8) lower end is a hemispherical concave surface, inner chamber is communicated with up and down, commutation head (10) upper end is a hemispherical convex surface, top circumference is evenly provided with eight hemispherical concave surfaces, bottom is provided with screw thread, inner chamber is communicated with up and down, eight steel balls (9) are arranged on respectively in commutation head (10) eight hemispherical concave surfaces, universal drive shaft joint (6) inner chamber is inserted in commutation head (10), its hemispherical convex surface and supporting seat (8) hemispherical concave surface fit tightly, sealing shroud (12) one end is enclosed within commutation head (10) bottom, the other end inserts universal drive shaft joint (6) inner chamber, retaining ring (11) and universal drive shaft joint (6) screwed connection, and press seal cover (12), universal drive shaft drive link (13) inner chamber is communicated with up and down, two ends screw thread respectively with two commutation head (10) screwed connection, shunting housing (19) middle part circumference is evenly provided with four countersunk head through holes, jump-ring slot is provided with in countersunk head through hole, filtering ring (17) is that inner homogeneous arranges the cylinder filtering aperture, filtering ring (17) is arranged on countersunk head through hole step, fix with jump ring, rubber sleeve (18) is arranged on drive joint (16) step, fits with shunting housing (19) in outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228385.7A CN103982134B (en) | 2014-05-28 | 2014-05-28 | A kind of reverse circulation drilling well tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228385.7A CN103982134B (en) | 2014-05-28 | 2014-05-28 | A kind of reverse circulation drilling well tool |
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| Publication Number | Publication Date |
|---|---|
| CN103982134A CN103982134A (en) | 2014-08-13 |
| CN103982134B true CN103982134B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410228385.7A Expired - Fee Related CN103982134B (en) | 2014-05-28 | 2014-05-28 | A kind of reverse circulation drilling well tool |
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| CN (1) | CN103982134B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863523B (en) * | 2015-06-01 | 2017-01-25 | 德州联合石油机械有限公司 | Ratchet type universal shaft for downhole power drill tool |
| CN105239935B (en) * | 2015-09-18 | 2017-04-05 | 西南石油大学 | A kind of drilling in coal is with spiral counterflush drilling instrument |
| CN106246120B (en) * | 2016-09-08 | 2018-07-31 | 杰瑞能源服务有限公司 | A kind of two-tube flushing tool of coiled tubing cyclone type |
| CN107816326B (en) * | 2017-10-23 | 2019-12-20 | 西华大学 | Double-wall reverse circulation drilling tool |
| CN108643855A (en) * | 2018-05-11 | 2018-10-12 | 西南石油大学 | One kind can salvaging type hydraulic-driven screw pump oil production device |
| CN114382404A (en) * | 2020-10-19 | 2022-04-22 | 中国石油天然气集团有限公司 | Hollow inverted screw drill |
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|---|---|---|---|---|
| US4546836A (en) * | 1983-10-26 | 1985-10-15 | Dresser Industries, Inc. | Downhole motor fluid flow restrictor |
| CN201087694Y (en) * | 2007-08-15 | 2008-07-16 | 李少江 | Safe and reliable long-life screw drill |
| CN201818235U (en) * | 2010-09-17 | 2011-05-04 | 盐城市大冈石油工具厂有限责任公司 | Reverse rotary screw drilling tool |
| CN202360021U (en) * | 2011-10-25 | 2012-08-01 | 中国石油化工股份有限公司 | Integrated high-performance screw drill |
| EP2634362A2 (en) * | 2012-03-03 | 2013-09-04 | Weatherford/Lamb Inc. | Wired or ported universal joint for downhole drilling motor |
| CN203383727U (en) * | 2013-07-17 | 2014-01-08 | 西南石油大学 | Screw drill tool with long service life and high performance |
| CN203594354U (en) * | 2013-12-06 | 2014-05-14 | 中国石油大学 | Pump pressure reverse-circulation well drilling system |
-
2014
- 2014-05-28 CN CN201410228385.7A patent/CN103982134B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4546836A (en) * | 1983-10-26 | 1985-10-15 | Dresser Industries, Inc. | Downhole motor fluid flow restrictor |
| CN201087694Y (en) * | 2007-08-15 | 2008-07-16 | 李少江 | Safe and reliable long-life screw drill |
| CN201818235U (en) * | 2010-09-17 | 2011-05-04 | 盐城市大冈石油工具厂有限责任公司 | Reverse rotary screw drilling tool |
| CN202360021U (en) * | 2011-10-25 | 2012-08-01 | 中国石油化工股份有限公司 | Integrated high-performance screw drill |
| EP2634362A2 (en) * | 2012-03-03 | 2013-09-04 | Weatherford/Lamb Inc. | Wired or ported universal joint for downhole drilling motor |
| CN203383727U (en) * | 2013-07-17 | 2014-01-08 | 西南石油大学 | Screw drill tool with long service life and high performance |
| CN203594354U (en) * | 2013-12-06 | 2014-05-14 | 中国石油大学 | Pump pressure reverse-circulation well drilling system |
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| CN103982134A (en) | 2014-08-13 |
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Granted publication date: 20160120 Termination date: 20160528 |