CN109611028B - Hydraulic oscillator based on roller and impeller - Google Patents
Hydraulic oscillator based on roller and impeller Download PDFInfo
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- CN109611028B CN109611028B CN201910015320.7A CN201910015320A CN109611028B CN 109611028 B CN109611028 B CN 109611028B CN 201910015320 A CN201910015320 A CN 201910015320A CN 109611028 B CN109611028 B CN 109611028B
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- 238000005553 drilling Methods 0.000 claims abstract description 49
- 239000012530 fluid Substances 0.000 claims description 13
- 230000033001 locomotion Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 5
- 230000000737 periodic effect Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 3
- 230000001133 acceleration Effects 0.000 abstract description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 3
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 3
- 241001330002 Bambuseae Species 0.000 abstract 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 3
- 239000011425 bamboo Substances 0.000 abstract 3
- 238000000034 method Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- 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
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
The invention discloses an oscillator with resistance reduction and speed acceleration for the field of petroleum drilling and the like. The technical scheme is as follows: the upper joint, the outer shell and the lower joint are sequentially connected through thread screws, the throttle valve plate is connected with the upper joint through the thread screws, the throttle valve plate is connected with the cylindrical pin through a locking screw, and the cylindrical pin is positioned between the impeller and the throttle valve plate; the impeller shaft, the impeller and the impeller shell are welded into a whole, a string bearing is arranged between the impeller shell and the shell body, the upper end and the lower end of the string bearing are positioned through the inner sleeve and the outer sleeve, and the lower end of the impeller shell is contacted with the upper end of the roller; the roller passes through threaded connection to be fixed on supporting a section of thick bamboo, supports and is connected through the parallel key between a section of thick bamboo and the shell body, realizes circumferential positioning, and it is adjacent with the lower clutch to support a section of thick bamboo lower extreme, realizes axial positioning. The hydraulic oscillator based on the rollers and the impellers has the advantages of no rubber structure design in the hydraulic oscillator, simple structure, effective reduction of the frictional resistance between the drilling tool at the lower part of the horizontal well and the extended reach well and the well wall, enhancement of the transmission capacity of the bit pressure, and avoidance of underground accidents such as sticking and blocking while improving the drilling efficiency.
Description
Technical Field
The invention belongs to the field of petroleum and natural gas drilling engineering, and relates to a novel downhole tool, in particular to a novel hydraulic oscillator with resistance reduction and speed acceleration functions.
Background
In recent years, with the continuous development of the industry in China, the demand and the production quantity of petroleum and natural gas are increasing day by day. However, in order to alleviate the shortage of petroleum resources in our country, petroleum extraction is beginning to be carried out in fields with severe environmental conditions, such as deep wells and ultra-deep wells. The exploitation of new oil and gas wells leads drilling projects to face more complicated conditions, and corresponding new drilling methods and tools are continuously developed in order to meet the requirements of new drilling conditions or new oil and gas resources (such as coal bed gas, shale gas, ocean oil and gas). In a horizontal well and an extended reach well, along with the increase of the well entry depth, the friction force between a drill string and a well wall is gradually increased to cause the loss of the bit pressure, the improvement of the mechanical drilling speed is not facilitated, the target diameter and the well bore quality of a drilled well are also seriously influenced, and the method is an important factor for restricting the technical development of the horizontal well and the extended reach well. In a method for solving these problems, energy conversion by a mechanically operated downhole tool using a drilling fluid, thereby generating certain expected vibrations, has rapidly developed in recent years. The hydraulic oscillator is introduced into the underground drill stem, so that the drill stem can generate periodic vibration with certain frequency and amplitude, static friction resistance in the feeding process is changed into dynamic friction resistance, and the hydraulic vibration drilling device has obvious advantages in the aspects of reducing friction resistance in the feeding process, improving the mechanical drilling speed, increasing the horizontal footage and shortening the drilling period. The stratum working environment that well drilling engineering faces is complicated, and the well drilling degree of depth is constantly increased, leads to the not high drill bit rock breaking efficiency drill bit when drilling deep well stratum, and the ubiquitous drilling rate is very slow, the cost of well drilling expense is high, and the improvement of well drilling speed lies in how to improve the rock breaking efficiency of drill bit. Meanwhile, the discharge capacity of a drilling well is limited due to overhigh pumping pressure on site, and the mechanical drilling rate and the well cleaning are influenced; and multiple MWD failures, premature PDC bit deactivation and unstable behavior in oil-based muds and high temperatures, and high failure rates may occur.
The invention provides a novel hydraulic oscillator based on a roller and an impeller, which is designed for solving the existing problems, realizes energy conversion by using drilling fluid, generates axial vibration, acts on a drill bit through a machine body structure, and achieves the purposes of reducing friction and resistance, increasing the effective drilling pressure of the drill bit, improving the mechanical drilling speed, reducing MWD faults, extending the drill string such as well displacement and the like in the drilling process.
Disclosure of Invention
The invention aims to: the novel pulse oscillator is designed for overcoming the defects that the drilling friction of the existing horizontal well and the extended reach well is large, the drilling pressure of a wellhead cannot be effectively transmitted to a drill bit, the rock carrying capacity of drilling fluid is not high, and the using effect of the existing axial vibration tool is not ideal.
In order to achieve the purpose, the invention adopts the technical scheme that: the hydraulic oscillator based on the rollers and the impellers consists of an upper joint, a throttle valve plate, a cylindrical pin, a locking screw, an impeller shaft, the impellers, an impeller shell, a serial bearing, an inner sleeve, an outer sleeve, a shell, the rollers, a supporting cylinder, a flat key and a lower joint, and is characterized in that the upper joint, the shell and the lower joint are connected through thread screws in sequence; the middle of the throttle valve plate is provided with a through hole which is connected with the upper joint through a locking screw; the cylindrical pin is connected with the throttle valve plate and the upper joint through locking screws, and the cylindrical pin limits the impeller; the impeller shaft and the impeller are connected with the impeller shell through welding; the upper surface and the lower surface of the impeller shell are inclined planes, and the impeller shell rotates along the roller while rotating to realize axial movement; a serial bearing is arranged between the impeller shell and the shell body, so that the friction force generated when the impeller shell moves can be reduced; the string bearing is fixed through the inner sleeve and the outer sleeve, and the inner sleeve and the outer sleeve are clamped between the string bearing and the outer shell to realize positioning; the impeller shaft is in a stepped shaft shape, the front end of the impeller shaft is welded with a conical head, the lower end of the impeller shaft is connected with the impeller shell through welding, and through axial movement, the change of the drilling fluid flow area is realized, and axial vibration is generated; the left end of the supporting cylinder is high, the right end of the supporting cylinder is low, a gap is reserved between the supporting cylinder and the impeller shell, the left end of the supporting cylinder is provided with a key groove and a threaded hole, the supporting cylinder is connected with the shell through a flat key to realize circumferential positioning, and the lower end of the supporting cylinder is close to a lower joint to realize axial positioning; the upper end of the roller is in mutual contact with the impeller shell and is fixed on the supporting cylinder through threaded connection, so that positioning is realized. The novel hydraulic oscillator based on the rollers and the impellers has the advantages of no rubber structure design in the novel hydraulic oscillator, simple structure, effective reduction of the frictional resistance between the drilling tool at the lower part of the horizontal well and the extended reach well and the well wall, enhancement of the transmission capacity of the bit pressure, and avoidance of underground accidents such as sticking and blocking while improving the drilling efficiency.
Compared with the prior art, the invention has the beneficial effects that: (1) only a small riser pressure is needed to generate axial pulses; (2) the high-frequency vibration effectively overcomes the frictional resistance of a drilling tool at the lower part, realizes the effective transmission of the drilling pressure at the well mouth, improves the mechanical drilling speed, and simultaneously prevents the drilling tool from being attached to the lower well wall for a long time due to the vibration of the tool, thereby avoiding the occurrence of underground accidents such as sticking and blocking. (3) The PDC drill bit has the advantages that a power assembly similar to a motor is omitted, the impeller is used for replacing the PDC drill bit, positive pulse pressure drop can be generated, the drilling speed can be improved, the pump pressure can be reduced, the consumption of the pump is reduced, and the passivation of the PDC drill bit is delayed; (4) the novel hydraulic oscillator based on the roller and the impeller can provide periodic axial impact force with adjustable frequency; (5) has little effect on MWD.
Drawings
Fig. 1 is a schematic structural diagram of a roller and impeller based hydroscillator according to the present invention.
In the figure: 1-upper joint, 2-throttle valve plate, 3-cylindrical pin, 4-locking screw, 5-impeller shaft, 6-impeller, 7-impeller shell, 8-bearing string, 9-inner sleeve, 10-outer sleeve, 11-outer shell, 12-roller, 13-supporting cylinder, 14-flat key and 15-lower joint.
Fig. 2 is a three-dimensional schematic view of a flat key type impeller according to the present invention.
Fig. 3 is a three-dimensional schematic view of a splined impeller according to the present invention.
FIG. 4 is a cross-sectional view of a throttle plate according to the present invention.
In the figure: 2-throttle valve plate, 4-locking screw.
Fig. 5 is a three-dimensional schematic view of an impeller housing according to the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which: according to the attached drawing 1, the roller and impeller based hydraulic oscillator is composed of an upper joint 1, a throttle valve plate 2, a cylindrical pin 3, a locking screw 4, an impeller shaft 5, an impeller 6, an impeller shell 7, a string bearing 8, an inner sleeve 9, an outer sleeve 10, an outer shell 11, a roller 12, a supporting cylinder 13, a flat key 14 and a lower joint 15, and is characterized in that the upper joint 1, the outer shell 11 and the lower joint 15 are connected through threads and threads in sequence; a through hole is formed in the middle of the throttle valve plate 2 and is connected with the upper joint 1 through a locking screw 4; the cylindrical pin 3 is connected with the throttle valve plate 2 and the upper joint 1 through a locking screw 4, and the cylindrical pin 3 limits the impeller 6; the impeller shaft 5 and the impeller 6 are connected with the impeller shell 7 through welding; the upper surface and the lower surface of the impeller shell 7 are inclined planes, and the impeller shell 7 rotates along the roller 12 while rotating to realize axial movement; a string bearing 8 is arranged between the impeller shell 7 and the shell body 11, and the string bearing 8 and the impeller shell 7 are in clearance fit, so that the friction force generated when the impeller shell 7 moves can be reduced; the string bearing 8 is fixed through the inner sleeve 9 and the outer sleeve 10, and the inner sleeve 9 and the outer sleeve 10 are clamped between the string bearing 8 and the outer shell 11 to realize positioning; the impeller shaft 5 is in a stepped shaft shape, a conical head is welded at the front end of the impeller shaft, the lower end of the impeller shaft is connected with the impeller shell 7 through welding, and through axial movement, the change of the drilling fluid flow area is realized, and axial vibration is generated; the left end of the supporting cylinder 13 is high, the right end of the supporting cylinder is low, a gap is reserved between the supporting cylinder and the impeller shell 7, the left end of the supporting cylinder is provided with a key groove and a threaded hole, the supporting cylinder is connected with the shell body 11 through a flat key 14 to realize circumferential positioning, and the lower end of the supporting cylinder is close to the lower joint 15 to realize axial positioning; the upper end of the roller 12 is contacted with the impeller shell 7 and fixed on the supporting cylinder 13 through threaded connection, so as to realize positioning.
In the working process, the lower part of the hydraulic oscillator based on the roller and the impeller is connected with the screw power drilling tool for matching use, and the axial vibration is generated to act on the lower drilling tool or the coiled tubing tool string, so that the friction resistance is obviously reduced, the bit pressure transmitted to a drill bit is improved, and the drilling and grinding operation of a long horizontal section is realized. The drilling fluid flowing out of the drill pipe directly flows into the hydraulic oscillator from the upper joint 1, and the drilling fluid flowing through the upper joint 1 directly impacts the impeller 6, so that the impeller 6 generates rotary motion and generates certain axial force along with the rotary motion. After the drilling fluid impacts the impeller 6, the impeller 6 drives the impeller shaft 5 and the impeller shell 7 to rotate together. Support a 13 left ends height, the right-hand member is low, and open the left end has keyway and screw hole, realizes circumferential location, and keyway department is connected with shell body 11 through flat key 14, and screw hole department is fixed with roller 12, and support a 13 lower extreme and lower clutch 15 are adjacent, realize axial positioning. The impeller shaft 5, the impeller 6 and the impeller shell 7 rotate under the impact of drilling fluid to generate hydraulic pulse, the impeller shell 7 rotates along the roller 12 while rotating and is pushed forward along a drilling tool borehole to realize axial movement, meanwhile, the axial movement of the impeller shaft 5 changes the flow area of the drilling fluid between the impeller shaft 5 and the throttle valve plate 2, and the change of the flow area can generate the change of the hydraulic pulse, thereby generating axial vibration. The generated axial vibration can obviously reduce the common resistance in the construction of a horizontal section, so that the internal pressure of the tool generates periodic fluctuation, a hydraulic oscillator based on the roller and the impeller generates periodic vibration, the rock carrying capacity of the drilling fluid is improved, and the mechanical drilling speed is obviously improved. The hydraulic oscillator based on the rollers and the impellers is internally provided with a rubber-free structure, so that the working stability of the downhole tool in high-temperature, oil-based mud and polluted liquid-phase environments is greatly enhanced.
Claims (2)
1. The hydraulic oscillator based on the roller and the impeller consists of an upper joint, a throttle valve plate, a locking screw, a cylindrical pin, the impeller, an impeller shaft, an impeller shell, the roller, a supporting cylinder, a flat key, a shell body and a lower joint, and is characterized in that the upper joint (1), the shell body (11) and the lower joint (15) are connected through a thread in sequence; a through hole is formed in the middle of the throttle valve plate (2) and is connected with the upper joint (1) through a locking screw (4); the cylindrical pin (3) is connected with the throttle valve plate (2) and the upper joint (1) through a locking screw (4), and the cylindrical pin (3) limits the impeller (6); the upper end surface and the lower end surface of the impeller shell (7) are inclined planes, a string bearing (8) is arranged between the impeller shell (7) and the shell body (11), and the string bearing (8) is positioned through an inner sleeve (9) and an outer sleeve (10); the impeller shell (7) rotates along the roller (12) at the same time of rotating, so that axial movement is realized; the impeller shaft (5) is in a stepped shaft shape, the front end of the impeller shaft is welded with a conical head, the lower end of the impeller shaft is connected with the impeller shell (7) through welding, the axial movement of the impeller shaft (5) changes the change of the flow area of drilling fluid in the middle through hole of the throttle valve plate (2), and the periodic fluctuation can be generated by the reciprocating movement, the energy conversion is realized by the drilling fluid, and the axial vibration is generated; the left end of the supporting cylinder (13) is high, the right end of the supporting cylinder is low, a gap is reserved between the supporting cylinder and the impeller shell (7), the left end of the supporting cylinder is provided with a key groove and a threaded hole, the supporting cylinder is connected with the shell body (11) through a flat key (14) to realize circumferential positioning, and the lower end of the supporting cylinder is close to the lower joint (15) to realize axial positioning; the upper end of the roller (12) is contacted with the impeller shell (7) and is fixed on the supporting cylinder (13) through threaded connection, so that positioning is realized.
2. The roller and impeller based hydroscillator of claim 1 wherein: the upper surface and the lower surface of the impeller shell (7) are inclined planes, and the impeller shell can rotate along the roller (12) while rotating, so that the axial movement is realized, and the lower end of the impeller shell is limited by the roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910015320.7A CN109611028B (en) | 2019-01-08 | 2019-01-08 | Hydraulic oscillator based on roller and impeller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910015320.7A CN109611028B (en) | 2019-01-08 | 2019-01-08 | Hydraulic oscillator based on roller and impeller |
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| Publication Number | Publication Date |
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| CN109611028A CN109611028A (en) | 2019-04-12 |
| CN109611028B true CN109611028B (en) | 2020-09-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113719249A (en) * | 2021-08-04 | 2021-11-30 | 中国煤炭地质总局水文地质局 | Hydraulic turbine driven milling casing tool |
| CN114635676B (en) * | 2022-03-08 | 2023-11-07 | 山东科技大学 | Intermittent pressurized water injection hole inner rotor device and method for low-permeability difficult-to-wet coal seam |
| CN116201482B (en) * | 2023-02-27 | 2024-03-12 | 湖北龙脉宜和石油科技有限公司 | Screw type underground hydraulic oscillator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103306600B (en) * | 2013-06-27 | 2016-02-10 | 深圳市百勤石油技术有限公司 | The axial instrument that spins of a kind of cam-type |
| US9828802B2 (en) * | 2014-01-27 | 2017-11-28 | Sjm Designs Pty Ltd. | Fluid pulse drilling tool |
| CN205172416U (en) * | 2015-10-30 | 2016-04-20 | 中石化石油工程技术服务有限公司 | Mechanical oscillation strikes transmission shaft |
| CN107420061A (en) * | 2017-09-29 | 2017-12-01 | 西南石油大学 | Underbalance pulse oscillator |
| CN107664013B (en) * | 2017-11-07 | 2023-08-01 | 西南石油大学 | Impeller type axial and circumferential compound impactor |
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