CN112482986A - Hydraulic lifting tool in pit - Google Patents
Hydraulic lifting tool in pit Download PDFInfo
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- CN112482986A CN112482986A CN202011581258.7A CN202011581258A CN112482986A CN 112482986 A CN112482986 A CN 112482986A CN 202011581258 A CN202011581258 A CN 202011581258A CN 112482986 A CN112482986 A CN 112482986A
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- joint
- coupling mechanism
- universal coupling
- turbine
- screw
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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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
Abstract
The invention relates to an underground hydraulic lifting tool which comprises a turbine power mechanism, a universal coupling mechanism and a screw axial flow mechanism, wherein an upper joint and a lower joint are respectively connected with a drill rod joint, the turbine power mechanism and the screw axial flow mechanism are connected through the universal coupling mechanism, drilling fluid flowing in a drill rod drives the turbine power mechanism to rotate, and a rotor of the screw axial flow mechanism is driven to rotate through a turbine central shaft and the universal coupling mechanism, so that the lifting of a drilling fluid annulus and the migration of horizontal section annulus rock debris are realized. The invention can be used in the pressure-controlled drilling operation, and realizes the pumping and lifting of the returned liquid in different degrees by adjusting the injection flow of the drilling liquid, thereby realizing the regulation and control of the bottom hole pressure and avoiding the stratum leakage of a narrow density window; the annular fluid circulation control device can be used in horizontal section drilling operation, improves the annular fluid fluidity, improves the annular rock debris migration speed, and reduces horizontal section rock debris deposition, thereby improving the drilling efficiency and ensuring the drilling safety; and has the characteristics of wide applicability, energy conservation, consumption reduction and high reliability.
Description
Technical Field
The invention relates to a fluid lifting tool in a well bore in petroleum drilling, in particular to a downhole hydraulic lifting tool.
Background
In recent years, as social production and life have more and more large demand on petroleum resources, the exploitation depth of the petroleum resources is continuously increased, the annular pressure of the underground part of a land is increased along with the depth, and a narrow density window exists in shallow surface layer drilling in the development of deep water oil gas and hydrate, so that the stratum is soft and easy to leak, the pressure in a shaft needs to be accurately regulated and controlled in the drilling process, otherwise, the shaft wall instability is easily caused, well leakage accidents occur, and the drilling efficiency is influenced; at present, methods for preparing drilling fluid, using gas, inflating, foaming and the like to control the pressure of a wellbore fluid column are commonly adopted, but the methods have higher development difficulty, have mutually matched process requirements and have poorer applicability; an annular turbine suction pump that current patent CN 101725543A provided rotates through the inside turbine of drilling fluid drive, drives the turbine pump blade in outside and rotates, realizes the lifting to drilling fluid, but the turbine blade exposes outside for the instrument can not be used for most complicated well sections, has very big restrictive.
Meanwhile, horizontal wells and extended reach wells are widely used in the field of petroleum at present, rock debris particles are easy to deposit on the lower well walls of horizontal wells, extended-inclination wells, extended reach wells, wells with complex structures and the like under the action of gravity, in the daily drilling process, if rock debris migration cannot be well realized, the flow rate of annular drilling fluid is increased, rock debris accumulation can form a rock debris bed, the drilling process is greatly influenced, a plurality of drilling accidents such as drilling sticking, suppressing, mud bags and the like are caused, the drilling efficiency is seriously influenced, in order to solve the problems brought by the rock debris bed, the modes of increasing the annular return speed, improving the mud performance, regularly positioning the circulating drilling holes of a well section and the like are mainly adopted at present, but the increase of the annular return speed easily causes instability of the well walls of upper soft strata; the application range for improving the mud performance is small, and the mud is not suitable for partial formation wells; the reaming work of the well section is timed to be time-consuming and labor-consuming.
The underground hydraulic lifting tool is driven to lift by water power, and annular drilling fluid and rock debris flow through the screw axial flow mechanism in the tool, so that the underground annular drilling fluid is lifted and the rock debris are transported, the annular pressure and the accumulation of horizontal rock debris are effectively adjusted, and the underground hydraulic lifting tool is suitable for drilling deep wells, large-displacement wells, long horizontal wells and other easily-leaked stratums.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a downhole hydraulic lifting tool, wherein a turbine power mechanism is driven to drive a screw axial flow mechanism to rotate by a drilling fluid pumped from the ground, so that the lifting of the drilling fluid in an annular space and the migration of rock debris are realized.
The aim of the invention is realized by the following technical scheme: a downhole hydraulic lifting tool, characterized by: the device consists of an upper joint 1, a turbine power mechanism, a universal coupling mechanism, a screw axial flow mechanism and a lower joint 29; the turbine power mechanism comprises a turbine shell 2, a turbine central shaft 3, a flow passing bearing 4, a cushion block 5, a turbine stator 6, a turbine rotor 7 and a bearing stop block 8, wherein one end of the turbine shell 2 is connected with an upper connector 1, the other end of the turbine shell is connected with a middle connector 10, the turbine central shaft 3 is arranged in the turbine shell 2, the turbine stator 6 is fixed on the turbine central shaft 3, the bearing stop block 8 is connected with the turbine central shaft 3 through threads, a flow passing hole 9 is formed in the turbine central shaft 3, the flow passing bearing 4 comprises a bearing flow passing channel 401, a rolling body 402, an inner ring 403 and an outer ring 404, and the cushion block 5 is arranged between the turbine stator 6 and the turbine rotor 7; the universal coupling mechanism consists of an intermediate joint 10, an upper joint 11 of the universal coupling mechanism, an intermediate sealing mechanism 12, an upper joint 13 of a screw stator, a boss 15 of the universal coupling mechanism, an inner joint 16 of the universal coupling mechanism, a transmission ellipsoid 17, a rubber cylinder 18, a lower joint 19 of the universal coupling mechanism, an inner sealing body 20 of the universal coupling mechanism and a shell 21 of the universal coupling mechanism, wherein one end of the intermediate joint 10 is connected with the turbine shell 2, the other end of the intermediate joint is connected with the upper joint 13 of the screw stator, the inner joint 16 of the universal coupling mechanism is connected with the central shaft 3 of the turbine through the upper joint 11 of the universal coupling mechanism, the intermediate sealing mechanism 12 is arranged between the intermediate joint 10 and the upper joint 11 of the universal coupling mechanism, the upper joint 13 of the screw stator is provided with an outlet hole 14 of the screw axial flow mechanism and a rubber cylinder hole 13-1, the lower joint 19 of the universal coupling, the universal coupling mechanism upper joint 11 is connected with a universal coupling mechanism shell 21 through a universal coupling mechanism inner joint 16, a universal coupling mechanism boss 15 is in spherical contact with a universal coupling mechanism lower joint 19, a transmission ellipsoid 17 and a universal coupling mechanism inner sealing body 20 are arranged between the universal coupling mechanism lower joint 19 and the universal coupling mechanism shell 21, an ellipsoid mounting groove is formed in the universal coupling mechanism shell 21, and a rubber sleeve 18 is arranged on a rubber sleeve groove 13-2 in the screw stator upper joint 13; the screw axial flow mechanism is composed of a screw stator 22, a screw rotor 23, a lower universal shaft joint 24, a screw stator lower joint 26, a lower universal shaft sealing body 27 and a lower universal shaft shell 28, wherein one end of the screw stator 22 is connected with the screw stator upper joint 13, the other end of the screw stator is connected with the screw stator lower joint 26, one end of the screw rotor 23 is connected with the universal shaft coupling mechanism lower joint 19, the other end of the screw rotor is connected with the lower universal shaft joint 24, a screw axial flow mechanism inlet hole 25 is formed in the screw stator lower joint 26, one end of the lower universal shaft shell 28 is connected with the screw stator lower joint 26, the other end of the lower universal shaft shell is connected with the lower joint 29, and the lower universal shaft sealing body 27 is installed between the lower universal shaft shell 28.
The downhole hydraulic lifting tool is characterized in that: the overflowing holes 9 are circumferentially and uniformly distributed on the turbine central shaft 3 and are used for enabling fluid to flow into the turbine central shaft 3 from the turbine and to be transmitted to the lower drill rod.
The downhole hydraulic lifting tool is characterized in that: and a gap is arranged between the transmission ellipsoid 17 and the ellipsoid mounting groove in the radial direction, and the lower joint 19 of the universal coupling mechanism can swing around the boss 15 of the universal coupling mechanism through a spherical surface.
The downhole hydraulic lifting tool is characterized in that: the upper joint 13 of the screw stator is provided with outlet holes 14 of a screw axial flow mechanism and a rubber barrel hole 13-1 which are uniformly distributed in the circumferential direction; the liquid pressure at the outlet of the screw axial flow mechanism props up the rubber barrel 18 through the rubber barrel hole 13-1, so that the rubber barrel 18 plays a certain role in separating the annular space, and most of annular space fluid flows through the screw axial flow mechanism.
The downhole hydraulic lifting tool is characterized in that: and the lower joint 26 of the screw stator is provided with screw axial flow mechanism inlet holes 25 which are distributed circumferentially and used for the screw axial flow mechanism to pump fluid.
The downhole hydraulic lifting tool is characterized in that: the universal coupling mechanism inner sealing body 20 and the lower universal shaft sealing body 27 are both made of elastic materials and can be compressed and deformed.
The downhole hydraulic lifting tool is characterized in that: the rolling body 402 of the overflowing bearing is arranged between an inner ring 403 and an outer ring 404, the inner ring 403 and the outer ring 404 can rotate relatively through the rolling body 402, and the outer ring 404 is provided with a bearing overflowing channel 401 for circulating drilling fluid.
The invention has the following advantages:
1. the hydraulic driving mode is applied to lift the annular fluid, the annular pressure is adjusted, and the situations of lost circulation, borehole wall instability and the like are effectively avoided;
2. when the tool is used for the horizontal section, the rock debris migration effect can be realized, and the rock debris deposition of the horizontal section is avoided;
3. the pumping and lifting of the returned liquid in different degrees can be realized by adjusting the injection flow of the drilling fluid, so that the bottom hole pressure is accurately regulated and controlled, and the stratum leakage of a narrow density window is avoided;
4. the tool has wide application range, can be directly connected into the existing drilling tool assembly in series by one or more tools, and can be used for the drilling operation of various existing deep wells, extended reach wells, long horizontal wells and other formations easy to leak;
5. compared with a common screw motor, the turbine power mechanism has higher hydraulic conversion efficiency and higher rotating speed;
6. compared with a turbine pump, the screw axial flow mechanism is stronger in tolerance, the situation that the blades are damaged by rock particles in upward-returning drilling fluid can be avoided, and the service life is longer.
Drawings
FIG. 1 is a front cross-sectional structural schematic view of the present invention;
FIG. 2 is a schematic three-dimensional cross-sectional view of a turbine power mechanism according to the present invention;
FIG. 3 is a schematic three-dimensional sectional view of the screw axial flow mechanism of the present invention;
FIG. 4 is a schematic view of a flow through bearing configuration;
FIG. 5 is a schematic view of the screw stator upper joint structure;
1. an upper joint; 2. a turbine housing; 3. a turbine central shaft; 4. a flow through bearing; 5. cushion blocks; 6. a turbine stator; 7. a turbine rotor; 8. a bearing stop; 9. an overflowing hole; 10. an intermediate joint; 11. an upper joint of the universal coupling mechanism; 12. a middle sealing mechanism; 13. an upper joint of the screw stator; 14. an outlet hole of the screw axial flow mechanism; 15. a universal coupling mechanism boss; 16. the inner joint of the universal coupling mechanism; 17. a transmission ellipsoid; 18. a rubber cylinder; 19. a lower joint of the universal coupling mechanism; 20. the inner sealing body of the universal coupling mechanism; 21. a universal coupling mechanism housing; 22. a screw stator; 23. a screw rotor; 24. a lower cardan shaft joint; 25. an inlet hole of the screw axial flow mechanism; 26. a screw stator lower joint; 27. a lower cardan shaft sealing body; 28. a lower cardan shaft housing; 29. a lower joint; 401. a bearing flow passage; 402. a rolling body; 403. an inner ring; 404. an outer ring; 13-1, rubber cylinder holes; 13-2 rubber cylinder grooves; 19-1, ellipsoidal grooves; and an ellipsoid installation groove.
Detailed Description
The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following description:
example one
The downhole annular drilling fluid lifting tool is used for a straight well section.
As shown in the figure, the hydraulic lifting tool for the underground annular drilling fluid comprises an upper joint 1, a turbine power mechanism, a universal coupling mechanism, a screw axial flow mechanism and a lower joint 29; the turbine power mechanism comprises a turbine shell 2, a turbine central shaft 3, a flow passing bearing 4, a cushion block 5, a turbine stator 6, a turbine rotor 7 and a bearing stop block 8, wherein one end of the turbine shell 2 is connected with an upper connector 1, the other end of the turbine shell is connected with a middle connector 10, the turbine central shaft 3 is arranged in the turbine shell 2, the turbine stator 6 is fixed on the turbine central shaft 3, the bearing stop block 8 is connected with the turbine central shaft 3 through threads, a flow passing hole 9 is formed in the turbine central shaft 3, the flow passing bearing 4 comprises a bearing flow passing channel 401, a rolling body 402, an inner ring 403 and an outer ring 404, and the cushion block 5 is arranged between the turbine stator 6 and the turbine rotor 7; the universal coupling mechanism consists of an intermediate joint 10, an upper joint 11 of the universal coupling mechanism, an intermediate sealing mechanism 12, an upper joint 13 of a screw stator, a boss 15 of the universal coupling mechanism, an inner joint 16 of the universal coupling mechanism, a transmission ellipsoid 17, a rubber cylinder 18, a lower joint 19 of the universal coupling mechanism, an inner sealing body 20 of the universal coupling mechanism and a shell 21 of the universal coupling mechanism, wherein one end of the intermediate joint 10 is connected with the turbine shell 2, the other end of the intermediate joint is connected with the upper joint 13 of the screw stator, the inner joint 16 of the universal coupling mechanism is connected with the central shaft 3 of the turbine through the upper joint 11 of the universal coupling mechanism, the intermediate sealing mechanism 12 is arranged between the intermediate joint 10 and the upper joint 11 of the universal coupling mechanism, the upper joint 13 of the screw stator is provided with an outlet hole 14 of the screw axial flow mechanism and a rubber cylinder hole 13-1, the lower joint 19 of the universal coupling, the universal coupling mechanism upper joint 11 is connected with a universal coupling mechanism shell 21 through a universal coupling mechanism inner joint 16, a universal coupling mechanism boss 15 is in spherical contact with a universal coupling mechanism lower joint 19, a transmission ellipsoid 17 and a universal coupling mechanism inner sealing body 20 are arranged between the universal coupling mechanism lower joint 19 and the universal coupling mechanism shell 21, an ellipsoid mounting groove is formed in the universal coupling mechanism shell 21, and a rubber sleeve 18 is arranged on a rubber sleeve groove 13-2 in the screw stator upper joint 13; the screw axial flow mechanism is composed of a screw stator 22, a screw rotor 23, a lower universal shaft joint 24, a screw stator lower joint 26, a lower universal shaft sealing body 27 and a lower universal shaft shell 28, wherein one end of the screw stator 22 is connected with the screw stator upper joint 13, the other end of the screw stator is connected with the screw stator lower joint 26, one end of the screw rotor 23 is connected with the universal shaft coupling mechanism lower joint 19, the other end of the screw rotor is connected with the lower universal shaft joint 24, a screw axial flow mechanism inlet hole 25 is formed in the screw stator lower joint 26, one end of the lower universal shaft shell 28 is connected with the screw stator lower joint 26, the other end of the lower universal shaft shell is connected with the lower joint 29, and the lower universal shaft sealing body 27 is installed between the lower universal shaft shell 28.
The downhole hydraulic lifting tool is characterized in that: the overflowing holes 9 are circumferentially and uniformly distributed on the turbine central shaft 3 and are used for enabling fluid to flow into the turbine central shaft from the turbine and to be transmitted to the lower drill rod.
The downhole hydraulic lifting tool is characterized in that: and a gap is arranged between the transmission ellipsoid 17 and the ellipsoid mounting groove in the radial direction, and the lower joint 19 of the universal coupling mechanism can swing around the boss 15 of the universal coupling mechanism through a spherical surface.
The downhole hydraulic lifting tool is characterized in that: the upper connector 13 of the screw stator is provided with outlet holes 14 of the screw axial flow mechanism and rubber cylinder holes 13-1 which are uniformly distributed in the circumferential direction; the liquid pressure at the outlet 14 of the screw axial flow mechanism props up the rubber barrel 18 through the rubber barrel hole 13-1, so that the rubber barrel plays a certain role in separating the annular space, the drilling fluid is prevented from flowing through the annular space, most of the upward-returning drilling fluid flows through the inside of the screw axial flow mechanism, and the lifting and moving functions of the screw axial flow mechanism are better exerted.
The downhole hydraulic lifting tool is characterized in that: and the lower joint 26 of the screw stator is provided with screw axial flow mechanism inlet holes 25 which are distributed circumferentially and used for pumping fluid by the screw axial flow mechanism to realize lifting and moving functions.
The downhole hydraulic lifting tool is characterized in that: the universal coupling mechanism inner sealing body 20 and the lower universal coupling mechanism sealing body 27 are both made of elastic materials and can be compressed and deformed.
The downhole hydraulic lifting tool is characterized in that: the rolling body 402 of the overflowing bearing is arranged between an inner ring 403 and an outer ring 404, the inner ring 403 and the outer ring 404 can rotate relatively through the rolling body 402, and the outer ring is provided with a bearing overflowing channel 401 for circulating drilling fluid.
The working process of the invention is as follows: the tool is connected into a vertical well drilling tool assembly, circulation of drilling fluid is started according to a conventional drilling process, the drilling fluid which is fed downwards firstly flows to a turbine through an overflowing bearing 4, a turbine rotor 6 is driven to rotate to drive a turbine central shaft 3 to rotate, the turbine central shaft 3 sequentially passes through an upper universal coupling mechanism joint 11, an inner universal coupling mechanism joint 16, a universal coupling mechanism shell 21, a transmission ellipsoid 17 and a lower universal coupling mechanism joint 19 to transmit rotation power to a screw rotor 23, at the moment, the screw rotor 23 rotates to play a role of a pump, so that the drilling fluid in the annular space is sucked from an inlet hole 25 of a screw axial flow mechanism and flows out from an outlet hole 14 of the screw axial flow mechanism, and the movement of annular fluid is realized; meanwhile, due to the throttling principle of the outlet hole 14 of the screw axial flow mechanism, a certain pressure is formed in the cavity, and fluid flows out of the spreading rubber sleeve 18 through the rubber sleeve hole 13-1, so that the spreading rubber sleeve 18 has a certain separation effect on the annular space, drilling fluid flows through the screw axial flow mechanism as much as possible, and the lifting effect is improved. On the other side, the drilling fluid flowing through the turbine flows into the center shaft of the turbine through the overflowing hole 9, and sequentially passes through the inside of the upper joint 11 of the universal coupling mechanism, the inside of the boss 15 of the universal coupling mechanism, the inside of the lower joint 19 of the universal coupling mechanism, the inside of the screw rotor 23, the lower universal shaft joint 24 and the lower joint 29, the lower joint 29 is connected with other drilling tools, and the drilling fluid is continuously transmitted along with the drilling tools. Therefore, the lifting effect on the annular drilling fluid is realized on the basis that the existing drilling operation is not influenced by the tool, and meanwhile, the rotation speed of the turbine driving mechanism can be adjusted by adjusting the flow of the drilling fluid pumped into the ground, so that the lifting speed of the turbine axial flow mechanism is controlled, and the fine regulation and control on the pressure of the annular drilling fluid are realized.
Example two
The downhole annular fluid lifting tool is used for a horizontal segment.
As shown in the figure, the hydraulic lifting tool for the underground annular drilling fluid comprises an upper joint 1, a turbine power mechanism, a universal coupling mechanism, a screw axial flow mechanism and a lower joint 29; the turbine power mechanism comprises a turbine shell 2, a turbine central shaft 3, a flow passing bearing 4, a cushion block 5, a turbine stator 6, a turbine rotor 7 and a bearing stop dog 8, wherein one end of the turbine shell 2 is connected with an upper connector 1, the other end of the turbine shell is connected with a middle connector 10, the turbine central shaft 3 is arranged in the turbine shell 2, the turbine stator 6 is fixed on the turbine central shaft 3, the bearing stop dog 8 is connected with the turbine central shaft 3 through threads, a flow passing hole 9 is formed in the turbine central shaft 3, the flow passing bearing 4 comprises a bearing flow passing channel 401, a rolling body 402, an inner ring 403 and an outer ring 404, the rolling body is arranged between the inner ring 403 and the outer ring 404, and the cushion block 5 is arranged between the turbine; the universal coupling mechanism consists of an intermediate joint 10, an upper joint 11 of the universal coupling mechanism, an intermediate sealing mechanism 12, an upper joint 13 of a screw stator, a boss 15 of the universal coupling mechanism, an inner joint 16 of the universal coupling mechanism, a transmission ellipsoid 17, a rubber cylinder 18, a lower joint 19 of the universal coupling mechanism, an inner sealing body 20 of the universal coupling mechanism and a shell 21 of the universal coupling mechanism, wherein one end of the intermediate joint 10 is connected with the turbine shell 2, the other end of the intermediate joint is connected with the upper joint 13 of the screw stator, the inner joint 16 of the universal coupling mechanism is connected with the central shaft 3 of the turbine through the upper joint 11 of the universal coupling mechanism, the intermediate sealing mechanism 12 is arranged between the intermediate joint 10 and the upper joint 11 of the universal coupling mechanism, the upper joint 13 of the screw stator is provided with an outlet hole 14 of the screw axial flow mechanism and a rubber cylinder hole 13-1, the lower joint 19 of the universal coupling, the universal coupling mechanism upper joint 11 is connected with a universal coupling mechanism shell 21 through a universal coupling mechanism inner joint 16, a universal coupling mechanism boss 15 is in spherical contact with a universal coupling mechanism lower joint 19, a transmission ellipsoid 17 and a universal coupling mechanism inner sealing body 20 are arranged between the universal coupling mechanism lower joint 19 and the universal coupling mechanism shell 21, an ellipsoid mounting groove is formed in the universal coupling mechanism shell 21, and a rubber sleeve 18 is arranged on a rubber sleeve groove 13-2 in the screw stator upper joint 13; the screw axial flow mechanism is composed of a screw stator 22, a screw rotor 23, a lower universal shaft joint 24, a screw stator lower joint 26, a lower universal shaft sealing body 27 and a lower universal shaft shell 28, wherein one end of the screw stator 22 is connected with the screw stator upper joint 13, the other end of the screw stator is connected with the screw stator lower joint 26, one end of the screw rotor 23 is connected with the universal shaft coupling mechanism lower joint 19, the other end of the screw rotor is connected with the lower universal shaft joint 24, a screw axial flow mechanism inlet hole 25 is formed in the screw stator lower joint 26, one end of the lower universal shaft shell 28 is connected with the screw stator lower joint 26, the other end of the lower universal shaft shell is connected with the lower joint 29, and the lower universal shaft sealing body 27 is installed between the lower universal shaft shell 28.
The downhole hydraulic lifting tool is characterized in that: the overflowing holes 9 are circumferentially and uniformly distributed on the turbine central shaft 3 and are used for enabling fluid to flow into the turbine central shaft 3 from the turbine and to be transmitted to the lower drill rod.
The downhole hydraulic lifting tool is characterized in that: and a gap is arranged between the transmission ellipsoid 17 and the ellipsoid mounting groove in the radial direction, and the lower joint 19 of the universal coupling mechanism can swing around the boss 15 of the universal coupling mechanism through a spherical surface.
The downhole hydraulic lifting tool is characterized in that: the upper connector 13 of the screw stator is provided with outlet holes 14 of the screw axial flow mechanism and rubber cylinder holes 13-1 which are uniformly distributed in the circumferential direction; the liquid pressure at the outlet 14 of the screw axial flow mechanism props up the rubber barrel 18 through the rubber barrel hole 13-1, so that the rubber barrel plays a certain role in separating the annular space, the drilling fluid is prevented from flowing through the annular space, most of the upward-returning drilling fluid flows through the inside of the screw axial flow mechanism, and the lifting and moving functions of the screw axial flow mechanism are better exerted.
The downhole hydraulic lifting tool is characterized in that: and the lower joint 26 of the screw stator is provided with screw axial flow mechanism inlet holes 25 which are distributed circumferentially and used for pumping fluid by the screw axial flow mechanism to realize lifting and moving functions.
The downhole hydraulic lifting tool is characterized in that: the universal coupling mechanism inner sealing body 20 and the lower universal coupling mechanism sealing body 27 are both made of elastic materials and can be compressed and deformed.
The downhole hydraulic lifting tool is characterized in that: the rolling body 402 of the overflowing bearing is arranged between an inner ring 403 and an outer ring 404, the inner ring 403 and the outer ring 404 can rotate relatively through the rolling body 402, and the outer ring 404 is provided with a bearing overflowing channel 401 for circulating drilling fluid.
The working process of the invention is as follows: the method comprises the following steps of simultaneously connecting a single tool or a plurality of tools into a horizontal well section drilling tool assembly, starting circulation of drilling fluid according to a conventional drilling process, enabling the downward drilling fluid to flow to a turbine through an overflowing bearing 4, driving a turbine rotor 7 to rotate to drive a turbine central shaft 3 to rotate, enabling the turbine central shaft 3 to sequentially pass through an upper universal coupling mechanism joint 11, an inner universal coupling mechanism joint 16, a universal coupling mechanism shell 21, a transmission ellipsoid 17 and a lower universal coupling mechanism joint 19 to transmit rotation power to a screw rotor 23, enabling the screw rotor 23 to rotate at the moment, playing a role of a pump, enabling the drilling fluid and silt in the annular space to be sucked in from an inlet hole 25 of a screw axial flow mechanism and flow out from an outlet hole 14 of the screw axial flow mechanism, and realizing transportation of rock debris; meanwhile, due to the throttling principle of the outlet hole of the screw axial flow mechanism, a certain pressure is formed in the cavity, and fluid flows out of the propping rubber sleeve 18 through the rubber sleeve hole 13-1, so that the propping rubber sleeve realizes a certain separation effect on the annular space, drilling fluid flows through the screw axial flow mechanism as much as possible, and the migration effect is improved. On the other side, the drilling fluid flowing through the turbine flows into the center shaft of the turbine through the overflowing hole 9, and sequentially passes through the inside of the upper joint 11 of the universal coupling mechanism, the inside of the boss 15 of the universal coupling mechanism, the inside of the lower joint 19 of the universal coupling mechanism, the inside of the screw rotor 23, the lower universal shaft joint 24 and the lower joint 29, the lower joint 29 is connected with other drilling tools, and the drilling fluid is continuously transmitted along with the drilling tools. Therefore, the tool realizes the migration effect of the silt and rock debris of different annular horizontal sections on the basis of not influencing the existing drilling operation.
The present invention, including but not limited to the embodiments described above, is intended to cover any methods, processes, articles of manufacture, which fall within the spirit and scope of the present invention, and which are subject to the principles and novel and inventive features disclosed herein.
Claims (1)
1. A downhole hydraulic lifting tool is characterized by comprising an upper joint (1), a turbine power mechanism, a universal coupling mechanism, a screw axial flow mechanism and a lower joint (29); wherein the turbine power mechanism consists of a turbine shell (2), a turbine central shaft (3), an overflowing bearing (4), a cushion block (5) and a turbine stator (6), the turbine rotor (7) and the bearing stop block (8) are formed, one end of a turbine shell (2) is connected with an upper connector (1), the other end of the turbine shell is connected with a middle connector (10), a turbine central shaft (3) is installed inside the turbine shell (2), a turbine stator (6) is fixed on the turbine central shaft (3), the bearing stop block (8) is connected with the turbine central shaft (3) through threads, an overflowing hole (9) is formed in the turbine central shaft (3), the overflowing bearing (4) is formed by a bearing overflowing channel (401), a rolling body (402), an inner ring (403) and an outer ring (404), and cushion blocks (5) are installed between the turbine stator (6) and the turbine rotor (7) at two ends of a turbine power mechanism; the universal coupling mechanism consists of an intermediate joint (10), an upper joint (11) of the universal coupling mechanism, an intermediate sealing mechanism (12), an upper joint (13) of a screw stator, a boss (15) of the universal coupling mechanism, an inner joint (16) of the universal coupling mechanism, a transmission ellipsoid (17), a rubber cylinder (18), a lower joint (19) of the universal coupling mechanism, an inner sealing body (20) of the universal coupling mechanism and a shell (21) of the universal coupling mechanism, wherein one end of the intermediate joint (10) is connected with the turbine shell (2), the other end of the intermediate joint is connected with the upper joint (13) of the screw stator, the inner joint (16) of the universal coupling mechanism is connected with the turbine central shaft (3) through the upper joint (11) of the universal coupling mechanism, the intermediate sealing mechanism (12) is arranged between the intermediate joint (10) and the upper joint (11) of the universal coupling mechanism, and an outlet hole (14) of the screw axial flow mechanism and a rubber cylinder hole (13-1), an ellipsoid groove (19-1) is arranged on a lower joint (19) of the universal coupling mechanism, an upper joint (11) of the universal coupling mechanism is connected with a shell (21) of the universal coupling mechanism through an inner joint (16) of the universal coupling mechanism, a boss (15) of the universal coupling mechanism is in spherical contact with the lower joint (19) of the universal coupling mechanism, a transmission ellipsoid (17) and an inner sealing body (20) of the universal coupling mechanism are arranged between the lower joint (19) of the universal coupling mechanism and the shell (21) of the universal coupling mechanism, an ellipsoid mounting groove is arranged on the shell (21) of the universal coupling mechanism, and a rubber sleeve (18) is arranged on a rubber sleeve groove (13-2) on an upper joint (13) of a screw stator; screw rod axial flow mechanism is by screw stator (22), screw rotor (23), universal shaft joint (24) down, screw stator lower clutch (26), universal shaft seal (27) down, lower universal shaft shell (28) are constituteed, wherein screw stator (22) one end is connected with screw stator upper clutch (13), the other end is connected with screw stator lower clutch (26), screw rotor (23) one end links to each other with universal shaft joint mechanism lower clutch (19), the other end links to each other with universal shaft joint (24) down, be equipped with screw axial flow mechanism import hole (25) on screw stator lower clutch (26), universal shaft shell (28) one end links to each other with screw stator lower clutch (26) down, the other end links to each other with lower clutch (29), install lower universal shaft seal (27) down under universal shaft shell (28) and the screw between universal shaft joint (24).
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| CN202011581258.7A CN112482986B (en) | 2020-12-28 | 2020-12-28 | Hydraulic lifting tool in pit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011581258.7A CN112482986B (en) | 2020-12-28 | 2020-12-28 | Hydraulic lifting tool in pit |
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| CN112482986A true CN112482986A (en) | 2021-03-12 |
| CN112482986B CN112482986B (en) | 2022-06-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113605863A (en) * | 2021-08-16 | 2021-11-05 | 南方海洋科学与工程广东省实验室(湛江) | Natural gas hydrate exploitation lifting pump device |
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| CN113605863A (en) * | 2021-08-16 | 2021-11-05 | 南方海洋科学与工程广东省实验室(湛江) | Natural gas hydrate exploitation lifting pump device |
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