CN107654193B - Hydraulic control double-acting hydraulic oscillation drilling tool - Google Patents
Hydraulic control double-acting hydraulic oscillation drilling tool Download PDFInfo
- Publication number
- CN107654193B CN107654193B CN201711161666.5A CN201711161666A CN107654193B CN 107654193 B CN107654193 B CN 107654193B CN 201711161666 A CN201711161666 A CN 201711161666A CN 107654193 B CN107654193 B CN 107654193B
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- Prior art keywords
- piston rod
- joint
- throttle valve
- holes
- sleeve
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
Abstract
The invention relates to a hydraulic control double-acting hydraulic oscillation drilling tool, and belongs to the technical field of petroleum downhole tools. The tool comprises an upper shell, a spline housing, a lower shell, an upper joint and a lower joint, wherein the upper joint is arranged at one end of the upper shell through the spline housing, the lower joint is arranged at one end of the lower shell through threads, and the upper shell is in threaded connection with the lower shell. The tool cooperates with the throttle valve when the piston rod generates axial reciprocating motion, so that the opening area of the throttle valve is periodically changed, and periodic pressure fluctuation is generated. The pressure wave action is used on the step shaft, so that the disc spring is periodically compressed and restored, periodic axial vibration is generated, the friction state between the drill string and the well wall is changed from static friction to sliding friction, friction is reduced, and drilling efficiency is improved. The tool has the characteristics of simple structure and good practicability, fully utilizes the kinetic energy of the high-pressure drilling fluid, has high energy utilization rate, and can stabilize the oscillation period of the tool.
Description
Technical Field
The invention relates to a hydraulic control double-acting hydraulic oscillation drilling tool, and belongs to the technical field of petroleum downhole tools.
Background
In recent years, with the continuous deep exploration technology of various large oil fields, the problems of gradually increasing the structural complexity of oil well bodies, increasing the number of long horizontal wells, large inclination, multi-branch horizontal wells and the like, have put forward new practical requirements on drilling engineering, so that the development space and the requirements of tools such as hydraulic oscillators and the like are improved. How to increase the length of the horizontal section of the horizontal well and realize quick drilling is a focus of research related to the petroleum industry. The complex well structure not only puts higher requirements on the drilling technology and method, but also leads the friction resistance between the petroleum drill string and the well wall to be obviously increased by a larger well inclination angle, reduces the transmission efficiency of the weight on bit and influences the mechanical drilling speed. A great deal of research work is being carried out by students at home and abroad on how to improve the length of the horizontal section in the horizontal well and realize the problems of rapid drilling and the like. The underground power drilling tool such as a hydraulic oscillator has the advantages of improving the mechanical drilling speed, increasing the footage of a single drill bit, being convenient for directionally controlling the track of a borehole, converting static friction between a drill stem and a borehole wall into sliding friction when sliding drill feeding so as to reduce friction resistance and the like, so that the development space and the demand of the underground power drilling tool are greatly improved, and the underground power drilling tool is highly focused by vast scientific researchers.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the device which can effectively reduce the friction resistance between the drill string and the well wall and avoid the occurrence of drilling sticking accidents, so that the whole tool generates periodic axial vibration, the friction state between the drill string and the well wall is changed from static friction to sliding friction, the friction is reduced, and the drilling efficiency is further improved.
The technical scheme of the invention is as follows:
the utility model provides a hydraulically controlled double-acting hydraulic oscillation drilling tool, includes casing, spline housing, lower casing, upper joint, lower joint, and the upper joint is installed through the spline housing to the one end of upper casing, and the lower joint is installed to the one end screw thread of lower casing, threaded connection between upper casing and the lower casing, its characterized in that: a step shaft is arranged in an upper shell at one end of the upper joint, a sealing element is arranged on the step shaft through a compression ring, and a disc spring is arranged on the step shaft between the sealing element and the spline housing; a throttle valve is arranged at one end in the lower shell; the other end in the lower shell is provided with a diversion joint through a diversion seat and a diversion sleeve; a high-pressure split sleeve is arranged between the throttle valve and the diversion joint, a piston rod is arranged in the high-pressure split sleeve through a valve core, a bulge is arranged at the middle part of the piston rod, an upper limit seat is arranged on the piston rod at one side of the bulge, and a lower limit seat is arranged on the piston rod at the other side of the bulge; a connecting and fixing sleeve is arranged between the upper limit seat and the lower limit seat.
The valve core is symmetrically provided with valve core bosses, the valve core bosses are provided with valve core boss holes, and the valve core boss holes are communicated with the central holes of the valve cores.
One end of the spline housing is in threaded connection with the upper shell, and the other end of the spline housing is in sliding key connection with the upper joint.
The step shaft is in threaded connection with the lower joint; the step shaft is connected with the spline housing in a sliding contact manner.
The upper limit seat and the lower limit seat are respectively provided with a limit seat hole; the guide sleeve is provided with a guide sleeve hole.
The throttle valve is cylindrical, an inner boss is arranged in a port of a central hole of the throttle valve, overflow holes are uniformly distributed on the circumference of the inner boss, and throttle valve holes are symmetrically formed in the throttle valve on one side of the inner boss;
the connecting and fixing sleeve is provided with a connecting and fixing sleeve hole.
The circumference of the high-pressure split sleeve is uniformly provided with high-pressure split holes. The guide connector is provided with a clamping groove, and the guide connector is mutually clamped with the high-pressure split sleeve through the clamping groove.
The bulge of the piston rod is provided with a concave groove, a plurality of piston rod holes are uniformly distributed on the piston rod, and the piston rod holes are communicated with the center hole of the piston rod; one end of the piston rod is connected with the throttle valve in a contact way; the other end of the piston rod is provided with a sliding block anvil through a piston joint.
The invention has the advantages that:
the hydraulic control double-acting hydraulic oscillation drilling tool is matched with the throttle valve when generating axial reciprocating motion through the piston rod, so that the opening area of the throttle valve is periodically changed, and periodic pressure fluctuation is generated. The periodically fluctuating pressure acts on the step shaft, so that the disc spring is periodically compressed and restored, and the whole tool generates periodic axial vibration, so that the friction state between the drill string and the well wall is converted from static friction to sliding friction, friction is reduced, and drilling efficiency is improved. The hydraulic control double-acting hydraulic oscillation drilling tool has the characteristics of simple structure and good practicability, fully utilizes the kinetic energy and the energy utilization rate of high-pressure drilling fluid, and ensures that the tool oscillation period is stable.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1 at A;
FIG. 3 is a schematic view of a throttle valve according to the present invention;
FIG. 4 is a schematic view of the structure of the high-pressure split sleeve of the present invention;
FIG. 5 is a schematic view of the piston rod of the present invention;
FIG. 6 is a schematic view of a limiting seat according to the present invention;
FIG. 7 is a schematic view of the structure of the connecting and fixing sleeve of the present invention;
FIG. 8 is a schematic view of a flow sleeve according to the present invention;
fig. 9 is a schematic structural view of the valve element of the present invention.
In the figure: 1. the valve comprises an upper shell, 2, a spline housing, 3, a lower shell, 4, an upper joint, 5, a lower joint, 6, a stepped shaft, 7, a compression ring, 8, a sealing piece, 9, a disc spring, 10, a throttle valve, 11, a flow passing hole, 12, a throttle valve hole, 13, a flow guiding seat, 14, a flow guiding sleeve, 15, a flow guiding joint, 16, a high-pressure flow guiding sleeve, 17, a high-pressure flow guiding hole, 18, a valve core, 19, a piston rod, 20, an upper limit seat, 21, a lower limit seat, 22, a connecting fixed sleeve, 23, a limit seat hole, 24, a connecting fixed sleeve hole, 25, a concave groove, 26, a piston rod hole, 27, a piston joint, 28, a slider top anvil, 29, a flow guiding sleeve hole, 30, a valve core boss, 31 and a valve core boss hole.
Detailed Description
The hydraulic control double-acting hydraulic oscillation drilling tool comprises an upper shell 1, a spline housing 2, a lower shell 3, an upper joint 4 and a lower joint 5, wherein the upper joint 4 is installed at one end of the upper shell 1 through the spline housing 2, one end of the spline housing 2 is in threaded connection with the upper shell 1, and the other end of the spline housing 2 is in sliding key connection with the upper joint 4. A lower joint 5 is arranged at one end of the lower shell 3 in a threaded manner, and the upper shell 1 is in threaded connection with the lower shell 3. A step shaft 6 is arranged in the upper shell 1 at one end of the upper joint 4, and the step shaft 6 is in threaded connection with the lower joint 5; the step shaft 6 is connected with the spline housing 2 in a sliding contact manner. The step shaft 6 is provided with a sealing element 8 through a compression ring 7, and the step shaft 6 between the sealing element 8 and the spline housing 2 is provided with a disc spring 9.
A throttle valve 10 is installed at one end in the lower housing 3. The throttle valve 10 is cylindrical, an inner boss is arranged in a central hole port of the throttle valve 10, overflow holes 11 are uniformly distributed on the circumference of the inner boss, and throttle valve holes 12 are symmetrically arranged on the throttle valve 10 on one side of the inner boss.
The other end in the lower shell 3 is provided with a diversion joint 15 through a diversion seat 13 and a diversion sleeve 14; the guide sleeve 14 is provided with a guide sleeve hole 29. A high-pressure split sleeve 16 is arranged between the throttle valve 10 and the guide joint 15, a clamping groove is arranged on the guide joint 15, and the guide joint is mutually clamped with the high-pressure split sleeve 16 through the clamping groove. A plurality of high-pressure shunt holes 17 are uniformly distributed on the circumference of the high-pressure shunt sleeve 16. A piston rod 19 is arranged in the high-pressure split sleeve 16 through a valve core 18, a bulge is arranged in the middle of the piston rod 19, an upper limit seat 20 is slidably arranged on the piston rod 19 on one side of the bulge, and a lower limit seat 21 is slidably arranged on the piston rod 19 on the other side of the bulge; a connecting and fixing sleeve 22 is arranged between the upper limit seat 20 and the lower limit seat 21. The upper limit seat 20 and the lower limit seat 21 are respectively provided with a limit seat hole 23; the connection fixing sleeve 22 is provided with a connection fixing sleeve hole 24.
The bulge of the piston rod 19 is provided with a concave groove 25, a plurality of piston rod holes 26 (the piston rod holes 26 are 1 hole, 2 holes, 3 holes, 4 holes and 5 holes from right to left) are uniformly distributed on the piston rod 19, and the piston rod holes 26 are communicated with the central hole of the piston rod 19; one end of the piston rod 19 is in contact connection with the throttle valve 10; the other end of the piston rod 19 is provided with a slider anvil 28 through a piston joint 27.
The valve core 18 of the hydraulic control double-acting hydraulic oscillation drilling tool is symmetrically provided with valve core bosses 30, the valve core bosses 30 are provided with valve core boss holes 31, and the valve core boss holes 31 are communicated with the central hole of the valve core 18.
When the hydraulic control double-acting hydraulic oscillation drilling tool works (taking fig. 1 as an example, a piston rod is formed at the lowest at the moment), drilling fluid enters the tool through the upper joint 4, and enters an annulus between the high-pressure diversion sleeve 16 and the lower shell 3 through the diversion seat 13 and the diversion sleeve 14. At this time, the drilling fluid is divided into two parts in the annulus, one part of the drilling fluid enters the throttle valve 10 from the throttle valve hole 12 on the throttle valve 10 and flows out from the through-hole 11 on the boss in the throttle valve 10, the other part of the drilling fluid enters the cavity between the spool boss 30 and the slider anvil 28 of the spool 18 from the high-pressure diversion hole 17 on the high-pressure diversion sleeve 16, the limit seat hole 23 on the upper limit seat 20 and the piston rod hole 26 (1 hole) of the piston rod 19, so as to push the spool 18 to move downwards, in the process, the cavity between the spool boss 30 of the spool 18 gradually communicates the piston rod hole 26 (3 hole and 4 hole) of the piston rod 19, and as the cavity between the spool boss 30 of the spool gradually communicates with the piston rod hole 26 of the piston rod 19, the drilling fluid is gradually separated from the cavity 26 of the piston rod 19 by the high-pressure diversion hole 17 on the high-pressure diversion sleeve 16, the connecting and fixing sleeve hole 24 on the piston rod 19, the concave groove 25 on the piston rod 19, the piston rod hole 26 (3 hole) of the piston rod 19, the spool boss 30 of the piston rod 19, the cavity 26 (4 hole) of the piston rod 19) enters the cavity between the boss 21 and the lower limit seat 21, so that the cavity of the piston rod 19 is gradually separated from the cavity 21, and the cavity of the cavity is gradually separated from the piston rod 19, and the fluid is gradually moved upwards in the cavity of the piston rod 10, and the cavity is gradually separated from the cavity surface of the piston rod 19, and the cavity is gradually in the cavity, and the cavity is gradually moved upwards, and the cavity and the fluid is moved. When the piston rod 19 moves upwards to a dead point, the limiting seat hole 23 on the lower limiting seat 21 is matched with the piston rod hole 26 (5 holes) of the piston rod 19, drilling fluid enters a cavity between the valve core boss 30 of the valve core 18 and the shoulder of the piston rod 19 from the high-pressure diversion hole 17 on the high-pressure diversion sleeve 16, the limiting seat hole 23 on the lower limiting seat 21 and the piston rod hole 26 (5 holes) of the piston rod 19, so that the valve core 18 is pushed to move upwards, in the upward operation process of the valve core 18, the cavity between the valve core bosses 30 of the valve core 18 gradually communicates the piston rod hole 26 (2 holes and 3 holes) of the piston rod 19, along with the gradual communication of the cavity between the valve core bosses 30 with the piston rod hole 26 of the piston rod 19, drilling fluid is increased by the high-pressure diversion hole 17 on the high-pressure diversion sleeve 16, the connecting fixing sleeve hole 24 on the connecting fixing sleeve 22, the concave groove 25 on the piston rod 19, the piston rod hole 26 (3 holes) of the piston rod 19, the cavity between the valve core bosses 30 and the piston rod 26 (2 holes) of the piston rod 19, so as to push the valve core 18 upwards, and the cavity between the boss 19, so as to push the piston rod 19 downwards and the cavity between the upper limiting seat 20, so as to push the valve core 18 upwards, and then flow downwards to the cavity between the piston rod boss 10 and the piston rod hole, so as to form a hydraulic pressure flow blocking surface to the drilling fluid.
During the closing or opening of the central bore of the restrictor valve 10 by the piston rod 19, the drilling fluid pressure in the tool increases with the closing and decreases with the decreasing. When the drilling fluid pressure in the tool increases along with the plugging, a holding pressure is formed between the joint of the upper shell 1 and the lower shell 3, the holding pressure pushes the step shaft 6 and the upper joint 4 to integrally and upwards move through the clamp ring 7 and the sealing piece 8, the disc spring 9 is compressed in the process that the step shaft 6 upwards moves to store energy, when the piston rod 19 moves upwards and is separated from the contact with the flow limiting valve 10, the central hole of the throttle valve 10 is opened, the overflow area of drilling fluid is increased, the drilling fluid pressure in the tool is instantaneously reduced, the holding pressure is eliminated, under the action of the disc spring 9, the step shaft 6 and the upper joint 4 quickly reset, and in the process, the shoulder of the upper joint 4 impacts the shoulder of the spline sleeve 2, so that the whole tool generates periodic axial vibration, the friction state between the drill string and the well wall is converted from static friction to sliding friction, thereby reducing friction resistance and improving the drilling efficiency.
The hydraulic control double-acting hydraulic oscillation drilling tool cooperates with the throttle valve 10 when in axial reciprocating motion through the piston rod 19, so that the flow area of the throttle valve 10 is periodically changed, and periodic pressure fluctuation is generated. The periodically fluctuating pressure acts on the step shaft 6, so that the disc spring 9 is periodically compressed and restored, and the whole tool generates periodic axial vibration, so that the friction state between the drill string and the well wall is changed from static friction to sliding friction, friction is reduced, and drilling efficiency is improved. The hydraulic control double-acting hydraulic oscillation drilling tool has the characteristics of simple structure and good practicability, fully utilizes the kinetic energy and the energy utilization rate of high-pressure drilling fluid, and ensures that the tool oscillation period is stable.
Claims (5)
1. The utility model provides a hydraulically controlled double-acting hydraulic oscillation drilling tool, includes casing (1), spline housing (2), lower casing (3), upper joint (4), lower joint (5), and upper joint (4) are installed through spline housing (2) to the one end of upper casing (1), and lower joint (5) are installed to the one end screw thread of lower casing (3), threaded connection between upper casing (1) and lower casing (3), its characterized in that: a step shaft (6) is arranged in the upper shell (1) at one end of the upper joint (4), a sealing piece (8) is arranged on the step shaft (6) through a compression ring (7), and a disc spring (9) is arranged on the step shaft (6) between the sealing piece (8) and the spline housing (2); a throttle valve (10) is arranged at one end in the lower shell (3); the other end in the lower shell (3) is provided with a flow guiding joint (15) through a flow guiding seat (13) and a flow guiding sleeve (14); a high-pressure split sleeve (16) is arranged between the throttle valve (10) and the diversion joint (15), a piston rod (19) is arranged in the high-pressure split sleeve (16) through a valve core (18), a bulge is arranged at the middle part of the piston rod (19), an upper limit seat (20) is arranged on the piston rod (19) at one side of the bulge, and a lower limit seat (21) is arranged on the piston rod (19) at the other side of the bulge; a connecting and fixing sleeve (22) is arranged between the upper limit seat (20) and the lower limit seat (21);
the throttle valve is cylindrical, an inner boss is arranged in a central hole port of the throttle valve (10), overflow holes (11) are uniformly distributed on the circumference of the inner boss, and throttle valve holes (12) are symmetrically arranged on the throttle valve (10) on one side of the inner boss;
the connecting and fixing sleeve (22) is provided with a connecting and fixing sleeve hole (24);
high-pressure diversion holes (17) are uniformly distributed on the circumference of the high-pressure diversion sleeve (16); the guide connector (15) is provided with a clamping groove, and the guide connector (15) is mutually clamped with the high-pressure split sleeve (16) through the clamping groove;
concave grooves (25) are formed in the protrusions of the piston rods (19), a plurality of piston rod holes (26) are uniformly distributed on the piston rods (19), and the piston rod holes (26) are communicated with the central holes of the piston rods (19); one end of the piston rod (19) is in contact connection with the throttle valve (10); the other end of the piston rod (19) is provided with a sliding block anvil (28) through a piston joint (27).
2. A hydraulically controlled double acting hydraulic oscillating drilling tool as claimed in claim 1 wherein: the valve core (18) is symmetrically provided with valve core bosses (30), the valve core bosses (30) are provided with valve core boss holes (31), and the valve core boss holes (31) are communicated with the central hole of the valve core (18).
3. A hydraulically controlled double acting hydraulic oscillating drilling tool as claimed in claim 1 wherein: one end of the spline housing (2) is in threaded connection with the upper shell (1), and the other end of the spline housing (2) is in sliding key connection with the upper joint (4).
4. A hydraulically controlled double acting hydraulic oscillating drilling tool as claimed in claim 1 wherein: the step shaft (6) is in threaded connection with the lower joint (5); the step shaft (6) is connected with the spline housing (2) in a sliding contact manner.
5. A hydraulically controlled double acting hydraulic oscillating drilling tool as claimed in claim 1 wherein: the upper limit seat (20) and the lower limit seat (21) are respectively provided with a limit seat hole (23); a flow guiding sleeve hole (29) is arranged on the flow guiding sleeve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711161666.5A CN107654193B (en) | 2017-11-21 | 2017-11-21 | Hydraulic control double-acting hydraulic oscillation drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711161666.5A CN107654193B (en) | 2017-11-21 | 2017-11-21 | Hydraulic control double-acting hydraulic oscillation drilling tool |
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| Publication Number | Publication Date |
|---|---|
| CN107654193A CN107654193A (en) | 2018-02-02 |
| CN107654193B true CN107654193B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711161666.5A Active CN107654193B (en) | 2017-11-21 | 2017-11-21 | Hydraulic control double-acting hydraulic oscillation drilling tool |
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| CN (1) | CN107654193B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442883B (en) * | 2018-05-24 | 2023-06-23 | 长江大学 | Underground hydraulic oscillator |
| CN108678673A (en) * | 2018-07-04 | 2018-10-19 | 中国石油集团西部钻探工程有限公司 | Novel hydropower vibrator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747957A (en) * | 2012-07-23 | 2012-10-24 | 中国石油大学(华东) | Drilling tool for stimulating vibration of drill column |
| CN106917582A (en) * | 2017-05-09 | 2017-07-04 | 长江大学 | A kind of axial double acting hydraulic impacting device |
| CN106917586A (en) * | 2017-05-09 | 2017-07-04 | 长江大学 | A kind of Well screw hydroscillator |
| CN207526413U (en) * | 2017-11-21 | 2018-06-22 | 长江大学 | A kind of hydraulic control double acting hydraulic oscillation drilling tool |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10301879B2 (en) * | 2014-01-21 | 2019-05-28 | Halliburton Energy Services, Inc. | Variable valve axial oscillation tool |
| RU2594418C1 (en) * | 2015-06-15 | 2016-08-20 | Общество с ограниченной ответственностью Научно-производственное предприятие "БУРИНТЕХ" (ООО НПП "БУРИНТЕХ") | Downhole feed mechanism |
-
2017
- 2017-11-21 CN CN201711161666.5A patent/CN107654193B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747957A (en) * | 2012-07-23 | 2012-10-24 | 中国石油大学(华东) | Drilling tool for stimulating vibration of drill column |
| CN106917582A (en) * | 2017-05-09 | 2017-07-04 | 长江大学 | A kind of axial double acting hydraulic impacting device |
| CN106917586A (en) * | 2017-05-09 | 2017-07-04 | 长江大学 | A kind of Well screw hydroscillator |
| CN207526413U (en) * | 2017-11-21 | 2018-06-22 | 长江大学 | A kind of hydraulic control double acting hydraulic oscillation drilling tool |
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| CN107654193A (en) | 2018-02-02 |
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