Downhole hydraulic power measuring mechanism for well drilling

Abstract

The utility model relates to the technical field of petroleum drilling, in particular to an underground hydraulic power measuring mechanism for drilling, which comprises a high-pressure oil cylinder upper end cover, an oil storage cylinder body and an oil storage cylinder upper jacket, the underground hydraulic power measuring mechanism for well drilling aims to replace an electronic measuring element in a vertical well drilling system so as to adapt to an ultra-deep well environment, adopts a full-mechanical structure, avoids limitation of electronic elements under extreme conditions, and is simple in structure and convenient to operate. The mechanical measuring assembly, the step ring assembly and the lower valve body assembly are linked to detect and correct the direction and angle of well deviation, the mechanical measuring assembly controls the step ring assembly and the lower valve body assembly, and when it is detected that the well deviation exceeds the standard, the executing mechanism is linked to conduct correction motion. The design ensures that the well inclination angle can still be effectively controlled and judged under the condition that no electronic element participates in, so that the vertical drilling system is suitable for a high-temperature and high-pressure environment of an ultra-deep well.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling, in particular to a downhole hydraulic power measuring mechanism for drilling. Background Art

[0002] The problem of preventing deflection and drilling fast in easily deflected blocks has always been a key issue restricting the improvement of drilling efficiency. Excessive well deviation will directly damage the drill bit, causing excessive friction of the drill bit in the well, accelerating the wear and fatigue of the drill bit and reducing its life. At the same time, excessive well deviation will increase the difficulty and risk of drilling, and may cause well wall instability, collapse or leakage. In addition, excessive well deviation will make vertical penetration more difficult, increasing the difficulty and cost of operations.

[0003] In order to control well inclination and prevent well inclination, the drilling pressure is usually sacrificed, and the method of light pressure and hanging is used to prevent the well inclination from increasing further. However, this method sacrifices the drilling speed for inclination control, resulting in a longer drilling cycle and increased drilling costs.

[0004] Another way is to use a vertical drilling system. The technology of vertical drilling system is the most mature abroad, but it is only rented and not sold, and the price is relatively expensive. In addition, the existing vertical drilling systems are equipped with electronic components for measuring well inclination, azimuth and signal transmission. In the high-temperature working environment underground, the stability of these electronic components will decrease, especially in ultra-deep wells, where the electronic components are hindered from working and the vertical drilling system cannot be used normally. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The utility model provides a downhole hydraulic power measuring mechanism for drilling, so as to overcome the problem in the prior art that the electronic components for measuring well inclination and azimuth in a vertical drilling system decrease in stability under high temperature environment, resulting in the vertical drilling system being unable to be used in ultra-deep wells.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the utility model provides a downhole hydraulic power measurement mechanism for drilling, comprising: an upper end cover of a high-pressure oil cylinder, an oil storage cylinder body and an upper outer sleeve of the oil storage cylinder;

[0009] The right end of the upper end cover of the high-pressure oil cylinder is provided with an oil storage cylinder body, the outer wall of the oil storage cylinder body is provided with an oil storage cylinder upper jacket, a balancing piston is provided between the oil storage cylinder body and the oil storage cylinder upper jacket, the right side of the oil storage cylinder body is provided with an oil storage cylinder connector, the left end face of the oil storage cylinder connector is provided with a high-pressure oil inlet, the right end of the oil storage cylinder connector is respectively provided with an upper pressure relief valve and a relief valve sleeve, and the relief valve sleeve is connected to a cartridge relief valve;

[0010] The right end of the oil storage cylinder connector is circumferentially provided with two high-pressure oil cylinder assemblies, a plurality of mechanical measuring assemblies, an oil return guide pipe and a high-pressure oil guide pipe, a plunger body is provided at the right end of the oil storage cylinder connector, the plunger body is connected to the oil storage cylinder connector through the two high-pressure oil cylinder assemblies, the oil return guide pipe and the high-pressure oil guide pipe, the plurality of mechanical measuring assemblies pass through the plunger body, four CVR one-way valves are provided on the plunger body, two symmetrical holes are provided on the outer wall of the plunger body, plunger assemblies are provided in the holes, plunger cover plates are provided on the outer walls of the two plunger assemblies, an oil inlet overflow valve guide pipe and a high-pressure oil line pipe are provided on the right end of the plunger body, and a lower overflow valve sleeve is provided on the right end of the oil inlet overflow valve guide pipe;

[0011] A step ring assembly is provided at the right end of the plunger body, and the step ring assembly is connected to the plunger body through a plurality of connecting columns. A lower pressure relief valve and an overflow valve are provided inside the step ring assembly. A lower valve body assembly and a connector are provided at the right end of the step ring assembly, and an actuator is provided at the right end of the connector.

[0012] Preferably, an internal thread is provided at the right end of the upper end cover of the high-pressure oil cylinder, and the upper end cover of the high-pressure oil cylinder is threadedly connected to the oil storage cylinder body.

[0013] Preferably, the outer wall of the oil storage cylinder connector is evenly provided with three grooves, and the three grooves include: a first groove, a second groove and a third groove, O-rings are provided in the first groove and the third groove, and the second groove is an oil circuit connecting groove, and a plurality of oil circuit openings are provided in the oil circuit connecting groove.

[0014] Preferably, the upper pressure relief valve is composed of a pressure relief valve body, a pressure relief valve adjusting sleeve and a pressure relief valve stem. The pressure relief valve stem is embedded in the pressure relief valve body, and a pressure relief valve adjusting sleeve is provided at the left end of the pressure relief valve stem.

[0015] Preferably, the plug-in overflow valve and the upper pressure relief valve are respectively provided with oil passage holes which are connected with the oil passage connecting grooves provided on the outer wall of the oil storage cylinder connector.

[0016] Preferably, the high-pressure oil cylinder assembly is composed of a high-pressure oil cylinder, a high-pressure piston, a high-pressure oil cylinder spring seat and a high-pressure oil cylinder spring, and the mechanical measuring assembly is composed of a high-pressure piston jacket, a heavy hammer upper suspension cover, a high-pressure piston jacket lower end, a heavy hammer upper suspension, a ball head, a ball head suspension seat, a heavy hammer rod, a heavy hammer head and a measuring assembly spring;

[0017] The high-pressure oil cylinder is a hollow cylindrical structure, the outer wall of the high-pressure oil cylinder is provided with a through hole, the right end of the high-pressure oil cylinder is provided with a high-pressure oil cylinder spring seat, and the left end is provided with a high-pressure piston. The high-pressure oil cylinder spring seat is a cylindrical structure, and the left end of the high-pressure oil cylinder spring seat is embedded in the high-pressure oil cylinder. The outer wall of the high-pressure oil cylinder spring seat is sleeved with a high-pressure oil cylinder spring. The high-pressure oil cylinder spring limits the high-pressure piston, and the high-pressure piston can move axially along the inner wall of the left end of the high-pressure oil cylinder;

[0018] The weight hammer head is a conical structure, and the bottom surface of the weight hammer head is connected to the ball head through a weight hammer rod. The high-pressure piston jacket is a cylindrical structure, and one end of the high-pressure piston jacket is provided with an external thread and the other end is provided with a circular hole. The bottom of the circular hole is provided with a weight upper suspension cover and a weight upper suspension in sequence, and the outer wall of the ball head is provided with a ball head suspension seat, and the bottom of the ball head suspension seat is provided with a measuring assembly spring, and the measuring assembly spring is sleeved on the outer wall of the weight hammer rod.

[0019] Preferably, the return oil conducting pipe and the high-pressure oil conducting pipe are symmetrically arranged, the return oil conducting pipe and the high-pressure oil conducting pipe are respectively embedded in the oil storage cylinder connecting body, and the upper pressure relief valve and the overflow valve sleeve are respectively embedded in the oil storage cylinder connecting body.

[0020] Preferably, the plunger body is an annular structure, and a plurality of through holes are evenly arranged on the left end face of the plunger body, the number of the through holes matches the number of mechanical measuring components, and the weight rods of the plurality of mechanical measuring components respectively pass through the through holes on the left end face of the plunger body.

[0021] Preferably, the plunger assembly comprises: a plunger, a plunger sleeve and a plunger spring. The plunger is a hollow cylindrical structure. The plunger is arranged in the plunger sleeve. The plunger can move axially in the plunger sleeve. A plunger spring is arranged in the center of the plunger. The two plunger assemblies comprise: a first plunger assembly and a second plunger assembly.

[0022] Preferably, the plunger cover plate fastens the plunger assembly into symmetrical holes provided on the outer wall of the plunger body by means of a plurality of screws.

[0023] Preferably, it also includes: an oil storage cylinder outer sleeve, an oil storage cylinder lower outer sleeve, a plunger body inner sleeve and a plunger body outer sleeve, wherein the left end of the plunger body is provided with an oil storage cylinder outer sleeve and an oil storage cylinder lower outer sleeve, respectively, the oil storage cylinder outer sleeve and the oil storage cylinder lower outer sleeve are respectively annular structures, the oil storage cylinder outer sleeve is arranged on the outer wall of the plunger body, and the oil storage cylinder lower outer sleeve is arranged on the inner wall of the plunger body;

[0024] The right end of the plunger body is provided with a plunger body inner sleeve and a plunger body outer sleeve, respectively. The plunger body inner sleeve and the plunger body outer sleeve are respectively annular structures. The plunger body outer sleeve is arranged on the outer wall of the plunger body, and the plunger body inner sleeve is arranged on the inner wall of the plunger body.

[0025] Preferably, the step ring assembly comprises: a step ring fixing seat, six step rings and six step ring limiting nuts, the step ring fixing seat is an annular structure, the step ring fixing seat is arranged in the plunger body outer sleeve, six step rings are evenly distributed on the right end of the step ring fixing seat, and step ring limiting nuts are respectively arranged on the right ends of the six step rings, and the step ring limiting nuts position the step rings;

[0026] The step ring is composed of two parts. The left end of the step ring is a hollow cylindrical structure. The outer wall of the left end of the step ring is provided with a notch. The right end of the step ring is embedded in the step ring fixing seat. A heavy hammer head is provided in the hollow cylindrical structure at the left end of each step ring.

[0027] Preferably, the lower valve body assembly includes: a lower valve body upper plate, a plurality of valve core sleeves, a plurality of valve core rods, a plurality of valve core springs, a lower valve body lower plate and a plurality of lower valve body oil circuit plug-ins, the lower valve body upper plate is an annular structure, the lower valve body upper plate is arranged at the right end of the step ring fixing seat, the right end surface of the lower valve body upper plate is evenly circumferentially provided with a plurality of through holes, the through holes are respectively embedded with valve core sleeves, the valve core sleeves, valve core rods, lower valve body oil circuit plug-ins and valve core springs are the same in number, the valve core sleeve is a hollow cylindrical structure, the outer walls at both ends of the valve core sleeve are provided with steps extending outward, a valve core rod is provided in the center of the valve core sleeve, the valve core rod is a hollow structure, and the valve A valve core spring is provided at the center of the core rod, a lower valve body lower plate is provided at the right end of the lower valve body upper plate, the lower valve body lower plate is an annular structure, a plurality of through holes matching the lower valve body upper plate are provided at the left end of the lower valve body lower plate, the right end of the valve core sleeve is embedded in the lower valve body lower plate, a plurality of lower valve body oil circuit plug-ins are respectively provided in the lower valve body lower plate, the lower valve body oil circuit plug-ins correspond to the valve core sleeve one by one, the lower valve body oil circuit plug-ins are arranged at the right end of the valve core sleeve, the right end of the valve core spring is connected to the lower valve body oil circuit plug-in, the valve core rod can move axially in the center of the valve core sleeve, the valve core spring limits the valve core rod, and a through hole is provided on the outer wall of the part of the valve core sleeve embedded in the lower valve body lower plate.

[0028] Preferably, it also includes: a plurality of connecting column fixing bolts and a plurality of connecting body fixing bolts, the connecting body is connected to the right end of the lower plate of the lower valve body through the plurality of connecting body fixing bolts, and the plurality of connecting column fixing bolts respectively fix and connect a plurality of connecting columns and the step ring assembly.

[0029] Preferably, it further comprises: a connector outer shell, wherein the connector outer shell is disposed on the outer wall of the connector.

[0030] Preferably, it further comprises: a plurality of oil storage cylinder connecting bolts, and the oil storage cylinder body and the oil storage cylinder connector are connected by the plurality of oil storage cylinder connecting bolts.

[0031] Preferably, it also includes: two balancing piston bolts and two balancing piston bolt gaskets. The left end surface of the balancing piston is evenly provided with four through holes, and the balancing piston bolt and the balancing piston bolt gasket are respectively arranged in the upper and lower symmetrical through holes.

[0032] Preferably, the upper end cover of the high-pressure oil cylinder is composed of two cylindrical structures, the radius of the left cylindrical structure is smaller than that of the right cylindrical structure, and three threaded holes are circumferentially arranged on the left cylindrical structure of the upper end cover of the high-pressure oil cylinder.

[0033] Preferably, the balancing piston is an annular structure, the balancing piston is sleeved on the outer wall of the oil storage cylinder body, and a plurality of grooves are evenly arranged on the right outer wall of the balancing piston.

[0034] Preferably, the four CVR one-way valves include: a first CVR one-way valve, a second CVR one-way valve, a third CVR one-way valve and a fourth CVR one-way valve;

[0035] The first CVR one-way valve connects the oil return conduit and the first plunger assembly, the second CVR one-way valve is symmetrically arranged with the first CVR one-way valve, and the second CVR one-way valve connects the first plunger assembly and the high-pressure oil line pipe;

[0036] The third CVR one-way valve connects the high-pressure oil conducting pipe and the second plunger assembly, the fourth CVR one-way valve and the third CVR one-way valve are symmetrically arranged, and the fourth CVR one-way valve connects the second plunger assembly and the oil inlet overflow valve conducting pipe.

[0037] Preferably, the connecting body is an annular structure, and is provided with a plurality of through holes, and the plurality of through holes are respectively connected to the oil circuit of the lower valve body by plug-in connection.

[0038] Preferably, a plurality of support blocks are evenly arranged on the circumference of the outer wall of the actuator, the number of the support blocks matches the number of the mechanical measuring components, a support block piston cylinder is arranged in the support block, and the support block piston cylinder is connected to the valve core sleeve through a plurality of through holes arranged on the connecting body.

[0039] Preferably, the lower plate of the lower valve body is an annular structure, and the outer wall of the lower plate of the lower valve body is sequentially provided with three grooves, the grooves at the left and right ends of the three grooves are respectively provided with sealing rings, and the outer wall of the middle groove is provided with a plurality of through holes.

[0040] (III) Beneficial effects

[0041] The utility model provides a downhole hydraulic power measuring mechanism for drilling, which can replace the electronic components for measuring well inclination in the vertical drilling system by arranging the downhole hydraulic power measuring mechanism for drilling in a vertical drilling system. The downhole hydraulic power measuring mechanism for drilling adopts a fully mechanical structure, which avoids the disadvantage that electronic components cannot be applied to the high temperature and high pressure environment of ultra-deep wells, and uses a mechanical measuring component to control a step ring component and a lower valve body component. When the vertical drilling system has well inclination during operation, the mechanical measuring component, the step ring component and the lower valve body component are linked to control an actuator to perform well inclination correction movement, so as to realize the control and judgment of the well inclination in the vertical drilling system without using electronic components, thereby achieving the purpose of enabling the vertical drilling system to be applied to the high temperature and high pressure environment of ultra-deep wells. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1The utility model shows a schematic diagram of the structure of a downhole hydraulic power measurement mechanism for drilling;

[0043] Figure 2 The utility model shows a schematic diagram of the internal structure of a downhole hydraulic power measurement mechanism for drilling;

[0044] Figure 3 A left-side structural schematic diagram of a downhole hydraulic power measuring mechanism for drilling according to the utility model is shown;

[0045] Figure 4 Show Figure 3 Schematic diagram of the cross-sectional structure of the middle BB;

[0046] Figure 5 Show Figure 3 Schematic diagram of the cross-sectional structure of the CC;

[0047] Figure 6 Show Figure 3 Schematic diagram of the cross-sectional structure of the middle DD;

[0048] Figure 7 Show Figure 3 Schematic diagram of the EE cross-section structure;

[0049] Figure 8 A schematic diagram of an oil storage cylinder body of a downhole hydraulic power measuring mechanism for drilling according to the utility model is shown;

[0050] Fig. 9 A schematic diagram of an oil storage cylinder connection body of a downhole hydraulic power measurement mechanism for drilling according to the utility model is shown;

[0051] Fig.10 A schematic diagram of a mechanical measuring assembly of a downhole hydraulic power measuring mechanism for drilling according to the utility model is shown;

[0052] Fig.11 A schematic diagram of a high-pressure cylinder assembly of a downhole hydraulic power measuring mechanism for drilling is shown in the utility model;

[0053] Fig.12 A schematic diagram of a valve core sleeve of a downhole hydraulic power measuring mechanism for drilling is shown in the utility model;

[0054] Fig.13 A schematic diagram of a stepped ring of a downhole hydraulic power measuring mechanism for drilling is shown in the utility model;

[0055] Fig.14 The utility model shows a working schematic diagram of a downhole hydraulic power measuring mechanism for drilling.

[0056] Among them: 1: high-pressure oil cylinder upper end cover; 2: oil storage cylinder body; 3: oil storage cylinder upper jacket; 4: balance piston; 5: balance piston bolt; 6: balance piston bolt gasket; 7: oil storage cylinder jacket; 8: oil storage cylinder connector; 9: oil storage cylinder lower jacket; 10: high-pressure oil guide pipe; 11: oil inlet overflow valve guide pipe; 12: lower overflow valve sleeve; 13: return oil guide pipe; 14: plunger body; 15: CVR one-way valve; 16: plunger; 17: plunger sleeve; 18: plunger cover plate; 19: plunger spring; 20: high-pressure oil line pipe; 21: oil storage cylinder connecting bolt; 22: high-pressure piston jacket; 23: heavy hammer upper suspension cover; 24: high-pressure piston jacket lower end; 25: heavy hammer upper suspension; 26: ball head; 27: ball head Suspension seat; 28: Measuring assembly spring; 29: Weight rod; 30: Weight head; 31: Plunger body inner sleeve; 32: Plunger body outer sleeve; 33: Step ring fixing seat; 34: Step ring; 35: Step ring limiting nut; 36: Lower valve body upper plate; 37: Valve core sleeve; 38: Valve core rod; 39: Lower valve body lower plate; 40: Lower valve body oil circuit insertion; 41: Overflow valve sleeve; 42: Connecting column; 43: Connecting column fixing bolt; 44: Connecting body; 45: Connecting body fixing bolt; 46: Connecting body outer sleeve; 47: Pressure relief valve adjusting sleeve; 48: Pressure relief valve rod; 49: Pressure relief valve body; 50: High-pressure oil cylinder; 51: High-pressure piston; 52: High-pressure oil cylinder spring; 53: High-pressure oil cylinder spring seat; 54: Valve core spring. DETAILED DESCRIPTION

[0057] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0058] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by "up", "down", "left", "right", "inside", "outside", "top" and "bottom" are all based on the directions or positional relationships shown in the accompanying drawings. The purpose is only to facilitate the description of the present invention and simplify the description. It does not indicate or imply that the referred parts must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0059] like Figure 1-14 As shown, the utility model provides a downhole hydraulic power measurement mechanism for drilling, characterized in that it comprises: an upper end cover 1 of a high-pressure oil cylinder, an oil storage cylinder body 2 and an upper outer sleeve 3 of the oil storage cylinder;

[0060] An oil storage cylinder body 2 is provided at the right end of the upper end cover 1 of the high-pressure oil cylinder. The upper end cover 1 of the high-pressure oil cylinder is composed of two cylindrical structures. The radius of the cylindrical structure at the left end is smaller than that of the cylindrical structure at the right end. The cylindrical structure at the left end of the upper end cover 1 of the high-pressure oil cylinder is circumferentially provided with three threaded holes for connecting with the vertical drilling system. A plurality of through holes are evenly circumferentially provided on the left end surface of the upper end cover 1 of the high-pressure oil cylinder for flowing the drilling fluid into the annular oil storage space between the oil storage cylinder body 2 and the upper sleeve 3 of the oil storage cylinder. An internal thread is provided at the right end of the upper end cover 1 of the high-pressure oil cylinder, and the upper end cover 1 of the high-pressure oil cylinder is threadedly connected to the left end of the oil storage cylinder body 2.

[0061] The outer wall of the oil storage cylinder body 2 is provided with an oil storage cylinder upper sleeve 3, and a balancing piston 4 is provided between the oil storage cylinder body 2 and the oil storage cylinder upper sleeve 3. The balancing piston 4 is an annular structure, and the balancing piston 4 is sleeved on the outer wall of the oil storage cylinder body 2. The right outer wall of the balancing piston 4 is evenly provided with a plurality of grooves, and the left end surface of the balancing piston 4 is evenly provided with 4 through holes in the circumferential direction, wherein the upper and lower symmetrical through holes are the oil filling hole and the exhaust hole, and the oil filling hole and the exhaust hole are respectively provided with a balancing piston bolt 5 and a balancing piston bolt gasket 6 for blocking;

[0062] The oil storage cylinder body 2 is composed of two hollow cylindrical structures. The outer diameter of the left end of the oil storage cylinder body 2 is smaller than the outer diameter of the right end. The left end of the oil storage cylinder body 2 is provided with a thread. The right side of the oil storage cylinder body 2 is provided with an oil storage cylinder connector 8. The outer wall of the right end of the oil storage cylinder body 2 is provided with four sealing grooves, and the sealing grooves are respectively provided with sealing rings. The right end face of the oil storage cylinder body 2 is provided with 8 through holes, 6 of which are respectively provided with oil storage cylinder connecting bolts 21. The oil storage cylinder body 2 is connected to the oil storage cylinder connector 8 by a plurality of oil storage cylinder connecting bolts 21. The left end face of the oil storage cylinder connector 8 is provided with a high pressure Oil inlet, the outer wall of the oil storage cylinder connector 8 is evenly provided with three grooves, the three grooves include: a first groove, a second groove and a third groove, the first groove and the third groove are sealing grooves respectively provided with O-type sealing rings, the second groove is an oil circuit connecting groove, the oil circuit connecting groove is provided with a plurality of oil circuit ports, the oil circuit ports are through holes provided in the oil circuit connecting groove, and the plurality of oil circuit ports are respectively connected with the mechanical measuring component and the two high-pressure cylinder components, the right end of the oil storage cylinder connector 8 is respectively provided with an upper pressure relief valve and a relief valve sleeve 41, the relief valve sleeve 41 is connected with a cartridge relief valve;

[0063] The upper pressure relief valve is composed of a pressure relief valve body 49, a pressure relief valve adjusting sleeve 47 and a pressure relief valve stem 48. The pressure relief valve stem 48 is embedded in the pressure relief valve body 49. The left end of the pressure relief valve stem 48 is provided with a pressure relief valve adjusting sleeve 47. The plug-in overflow valve and the upper pressure relief valve are respectively provided with oil path holes that are connected to the oil path connecting groove provided on the outer wall of the oil storage cylinder connector 8, which are used to discharge high-pressure oil into the annular oil storage space of the oil storage cylinder body 2 through the valve body during overpressure or pressure relief.

[0064] The right end of the oil storage cylinder connector 8 is circumferentially provided with two high-pressure oil cylinder components, a plurality of mechanical measuring components, an oil return guide pipe 13 and a high-pressure oil guide pipe 10, and the right end of the oil storage cylinder connector 8 is provided with a plunger body 14, and the plunger body 14 is connected to the oil storage cylinder connector 8 through two high-pressure oil cylinder components, the oil return guide pipe 13 and the high-pressure oil guide pipe 10, and the oil return guide pipe 13 and the high-pressure oil guide pipe 10 are symmetrically arranged, and the oil return guide pipe 13 and the high-pressure oil guide pipe 10 are respectively embedded in the oil storage cylinder connector 8, and the upper pressure relief valve and the overflow valve sleeve 41 are respectively embedded in the oil storage cylinder connector 8;

[0065] The high-pressure oil cylinder assembly is composed of a high-pressure oil cylinder 50, a high-pressure piston 51, a high-pressure oil cylinder spring seat 53 and a high-pressure oil cylinder spring 52. The high-pressure oil cylinder 50 is a hollow cylindrical structure. The outer wall of the high-pressure oil cylinder 50 is provided with a through hole. The right end of the high-pressure oil cylinder 50 is provided with a high-pressure oil cylinder spring seat 53, and the left end is provided with a high-pressure piston 51. The high-pressure oil cylinder spring seat 53 is a cylindrical structure. The left end of the high-pressure oil cylinder spring seat 53 is embedded in the high-pressure oil cylinder 50. The outer wall of the high-pressure oil cylinder spring seat 53 is sleeved with a high-pressure oil cylinder spring 52. The high-pressure oil cylinder spring 52 limits the high-pressure piston 51, and the high-pressure piston 51 can move axially along the inner wall of the left end of the high-pressure oil cylinder 50.

[0066] The mechanical measuring assembly is composed of a high-pressure piston jacket 22, a heavy hammer upper suspension cover 23, a high-pressure piston jacket lower end 24, a heavy hammer upper suspension 25, a ball head 26, a ball head suspension seat 27, a heavy hammer rod 29, a heavy hammer head 30 and a measuring assembly spring 28. The heavy hammer head 30 is a conical structure, and the bottom surface of the heavy hammer head 30 is connected to the ball head 26 through the heavy hammer rod 29. The high-pressure piston jacket 22 is a cylindrical structure, one end of the high-pressure piston jacket 22 is provided with an external thread and the other end is provided with a circular hole, and the bottom of the circular hole is provided with a heavy hammer upper thread in sequence. The suspension cover 23 and the weight upper suspension 25, the outer wall of the high-pressure piston jacket 22 is provided with a through hole, the through hole and the high-pressure piston jacket lower end 24 are penetrated, the outer wall of the ball head 26 is provided with a ball head suspension seat 27, and the bottom of the ball head suspension seat 27 is provided with a measuring component spring 28, the measuring component spring 28 is sleeved on the outer wall of the weight rod 29, and hydraulic oil can be injected into the interior of the high-pressure piston jacket lower end 24 through the through hole provided on the outer wall of the high-pressure piston jacket 22 to push the weight upper suspension 25 to move axially along the inner wall of the lower end 24 of the high-pressure piston jacket.

[0067] The plunger body 14 is an annular structure, and a plurality of through holes are evenly arranged on the left end face of the plunger body 14. The number of through holes matches the number of mechanical measuring components. The weight rods 29 of the plurality of mechanical measuring components respectively pass through the through holes on the left end face of the plunger body 14. Four CVR one-way valves 15 are arranged on the plunger body 14. Two symmetrical holes are arranged on the outer wall of the plunger body 14, and plunger components are respectively arranged in the holes. The two plunger components include: a first plunger component and a second plunger component. The plunger component includes: a plunger 16, a plunger sleeve 17 and a plunger spring 19. The plunger 16 is a hollow cylindrical structure. The plunger 16 is arranged in the plunger sleeve 17. A plunger spring 19 is arranged in the center of the plunger 16. The plunger 16 can move axially in the plunger sleeve 17 to control the flow of liquid in the four CVR one-way valves. The two The outer walls of the plunger assemblies are respectively provided with plunger cover plates 18, and the plunger cover plates 18 snap the plunger assemblies into symmetrical holes provided on the outer wall of the plunger body 14 through a number of screws. The four CVR one-way valves 15 include: a first CVR one-way valve, a second CVR one-way valve, a third CVR one-way valve and a fourth CVR one-way valve. The first CVR one-way valve connects the return oil guide pipe 13 and the first plunger assembly, the second CVR one-way valve is symmetrically arranged with the first CVR one-way valve, the second CVR one-way valve connects the first plunger assembly and the high-pressure oil circuit pipe 20, the third CVR one-way valve connects the high-pressure oil guide pipe 10 and the second plunger assembly, the fourth CVR one-way valve is symmetrically arranged with the third CVR one-way valve, and the fourth CVR one-way valve connects the second plunger assembly and the oil inlet overflow valve guide pipe 11.

[0068] The left end of the plunger body 14 is provided with an oil storage cylinder jacket 7 and an oil storage cylinder lower jacket 9, respectively. The oil storage cylinder jacket 7 and the oil storage cylinder lower jacket 9 are respectively annular structures. The oil storage cylinder jacket 7 is arranged on the outer wall of the plunger body 14, and the oil storage cylinder lower jacket 9 is arranged on the inner wall of the plunger body 14. The right end of the plunger body 14 is provided with a plunger body sleeve 31 and a plunger body sleeve 32, respectively. The plunger body sleeve 31 and the plunger body sleeve 32 are respectively annular structures. The plunger body sleeve 32 is arranged on the outer wall of the plunger body 14, and the plunger body sleeve 31 is arranged on the inner wall of the plunger body 14;

[0069] The right end of the plunger body 14 is respectively provided with an oil inlet overflow valve guide tube 11 and a high-pressure oil line pipe 20. The oil inlet overflow valve guide tube 11 is a hollow cylindrical structure. The outer wall of the oil inlet overflow valve guide tube 11 is provided with a plurality of through holes. The right end of the oil inlet overflow valve guide tube 11 is provided with a lower overflow valve sleeve 12. The right end of the plunger body 14 is provided with a step ring assembly. The step ring assembly is connected to the plunger body 14 through a plurality of connecting columns 42. The plurality of connecting columns 42 are respectively connected to the step ring assembly by connecting column fixing bolts 43. The step ring assembly is provided with a lower pressure relief valve and an overflow valve. The right end of the step ring assembly is provided with a lower valve body assembly and a connector 44. The right end of the connector 44 is provided with an actuator. The outer wall of the connector 44 is provided with a connector jacket 46.

[0070] The step ring assembly comprises: a step ring fixing seat 33, six step rings 34 and six step ring limiting nuts 35. The step ring fixing seat 33 is an annular structure, and the step ring fixing seat 33 is arranged in the plunger body jacket 32. Six step rings 34 are evenly distributed on the right end of the step ring fixing seat 33. The right ends of the six step rings 34 are respectively provided with step ring limiting nuts 35, and the step ring limiting nuts 35 position the step rings 34.

[0071] The step ring 34 is composed of two parts. The left end of the step ring 34 is a hollow cylindrical structure. The outer wall of the left end of the step ring 34 is provided with a notch. The right end of the step ring 34 is embedded in the step ring fixing seat 33. Each step ring 34 has a corresponding heavy hammer head 30 in the hollow cylindrical structure at the left end.

[0072] The lower valve body assembly comprises: a lower valve body upper plate 36, a plurality of valve core sleeves 37, a plurality of valve core rods 38, a plurality of valve core springs 54, a lower valve body lower plate 39 and a plurality of lower valve body oil circuit inserts 40. The lower valve body upper plate 36 is an annular structure, and the lower valve body upper plate 36 is arranged at the right end of the step ring fixing seat 33. The right end surface of the lower valve body upper plate 36 is evenly circumferentially provided with a plurality of through holes, and the valve core sleeves 37 are respectively embedded in the through holes. The number of the valve core sleeves 37, the valve core rods 38, the lower valve body oil circuit inserts 40 and the valve core springs 54 are the same. The valve core sleeve 37 is a hollow cylindrical structure, and the outer walls at both ends of the valve core sleeve 37 are provided with steps extending outward. The center of the valve core sleeve 37 is provided with a valve core rod 38. The valve core rod 38 is a hollow structure, and the center of the valve core rod 38 is provided with a valve core spring 54. The right end of the lower valve body upper plate 36 is provided with a lower valve body lower plate 3 9, the lower valve body lower plate 39 is an annular structure, the left end of the lower valve body lower plate 39 is provided with a plurality of through holes matching the lower valve body upper plate 36, the right end of the valve core sleeve 37 is embedded in the lower valve body lower plate 39, the lower valve body lower plate 39 is respectively provided with a lower valve body oil circuit plug 40, the lower valve body oil circuit plug 40 corresponds to the valve core sleeve 37 one by one, the lower valve body oil circuit plug 40 is arranged at the right end of the valve core sleeve 37, the right end of the valve core spring 54 is connected to the lower valve body oil circuit plug 40, the valve core rod 38 can move axially in the center of the valve core sleeve 37, the valve core spring 54 limits the valve core rod 38, the outer wall of the valve core sleeve 37 embedded in the lower valve body lower plate 39 is provided with a through hole, the right end of the lower valve body upper plate 36 is connected to the valve core sleeve 37 by a plurality of fixing bolts, and the right end of the lower valve body lower plate 39 is connected to the left end of the connecting body 44 by a plurality of connecting body fixing bolts 45;

[0073] The outer wall of the lower plate 39 of the lower valve body is provided with three grooves in sequence, the grooves at the left and right ends of the three grooves are respectively provided with sealing rings, and the outer wall of the middle groove is provided with a plurality of through holes, which are respectively connected to the high-pressure oil pipe 20 and a plurality of valve core sleeves 37.

[0074] The connecting body 44 is an annular structure and is provided with a plurality of through holes, which are respectively connected to the right end of the valve core sleeve 37. A plurality of support blocks are evenly arranged on the circumference of the outer wall of the actuator, and the number of the support blocks matches the number of the mechanical measuring components. A support block piston cylinder is arranged in the support block, and the support block piston cylinder is respectively connected to the valve core sleeve 37 through a plurality of through holes provided on the connecting body 44.

[0075] The following is a detailed introduction to the actual working scenario of a downhole hydraulic power measurement mechanism for drilling.

[0076] In the actual working process, the downhole hydraulic power measuring mechanism for drilling is sleeved on the mandrel of the vertical drilling system, and the mandrel contacts the plunger 16. The plunger 16 presses against the mandrel under the action of the plunger spring 19. The mandrel is an eccentric structure. The rotation of the mandrel and the elastic force of the plunger spring 19 make the plunger 16 reciprocate up and down. Under the action of the reciprocating motion of the plunger 16 in the first plunger assembly, the first CVR one-way valve and the second CVR one-way valve draw the hydraulic oil from the return oil guide pipe 13 into the high-pressure oil line pipe 20. Through the high-pressure oil line pipe 20, the hydraulic oil flows through the lower plate 39 of the lower valve body, enters the annular space between the middle groove of the lower plate 39 of the lower valve body and the plunger body sleeve 32, flows into the corresponding valve core sleeve 37 through the through hole provided on the outer wall of the middle groove of the lower plate 39 of the lower valve body, and flows into the support block piston cylinder of the actuator through the through hole provided in the connecting body 44, so that the support block in the actuator presses against the well wall outward.

[0077] Under the action of the reciprocating motion of the plunger 16 in the second plunger assembly, the third CVR one-way valve and the fourth CVR one-way valve suck the hydraulic oil from the several through holes provided on the outer wall of the oil inlet overflow valve guide tube 11, flow through the high-pressure oil guide tube 10 into the oil storage cylinder connector 8, and are discharged to the oil circuit connecting groove through the oil passage opening provided on the outer wall of the oil storage cylinder connector 8, and are injected into the two high-pressure cylinder assemblies and several mechanical measurement assemblies through the oil circuit connecting groove. The hydraulic oil pushes the high-pressure piston 51 in the high-pressure cylinder assembly to overcome the high-pressure cylinder spring 52, and the hydraulic oil is buffered and decompressed by the action of the high-pressure cylinder assembly, and the oil circuit is connected. The hydraulic oil after the pressure reduction in the groove flows into the mechanical measuring component through the through hole at the upper end of the high-pressure piston sleeve 22, pushing the upper suspension 25 of the heavy hammer to move downward. The heavy hammer head 30 always points to the center of the earth under the action of gravity. When the vertical drilling system is tilted more than 1.5°, the heavy hammer head 30 on the low side presses down to contact the corresponding step ring 34, so that the valve core rod 38 corresponding to the step ring 34 overcomes the elastic force of the valve core spring 54 and moves downward to close the through hole in the middle groove of the lower plate 39 of the corresponding lower valve body. At this time, there is no hydraulic oil supply on the low side of the well inclination, and the high side works normally. The lower actuator support block works normally and pushes against the high side of the well inclination to correct the inclination.

[0078] It can be understood that the above-mentioned various embodiments mentioned in the present invention can be combined with each other to form a combined embodiment without violating the principle logic. Due to space limitations, the present invention will not elaborate on them.

[0079] Those skilled in the art will appreciate that, in the above method of specific implementation, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of the steps should be determined by their functions and possible internal logic.

[0080] The utility model provides a downhole hydraulic power measuring mechanism for drilling. By arranging the downhole hydraulic power measuring mechanism for drilling in a vertical drilling system, the electronic components for measuring well inclination in the vertical drilling system are replaced. The downhole hydraulic power measuring mechanism for drilling adopts a fully mechanical structure, avoiding the disadvantage that electronic components cannot be applied to the high temperature and high pressure environment of ultra-deep wells. A mechanical measuring component is used to control the step ring component and the lower valve body component. When the vertical drilling system has well inclination during operation, the mechanical measuring component, the step ring component and the lower valve body component are linked to control the actuator to perform well inclination correction movement, thereby realizing the control and judgment of the well inclination in the vertical drilling system without using electronic components, thereby achieving the purpose of enabling the vertical drilling system to be applied to the high temperature and high pressure environment of ultra-deep wells.

[0081] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A downhole hydraulic power measurement mechanism for drilling, characterized in that: include: A high-pressure oil cylinder upper end cover (1), an oil storage cylinder body (2), and an oil storage cylinder upper jacket (3); An oil storage cylinder body (2) is provided at the right end of the upper end cover (1) of the high-pressure oil cylinder. An oil storage cylinder upper jacket (3) is provided on the outer wall of the oil storage cylinder body (2). A balance piston (4) is provided between the oil storage cylinder body (2) and the oil storage cylinder upper jacket (3). An oil storage cylinder connector (8) is provided on the right side of the oil storage cylinder body (2). A high-pressure oil inlet is provided on the left end surface of the oil storage cylinder connector (8). An upper pressure relief valve and a relief valve sleeve (41) are provided at the right end of the oil storage cylinder connector (8). The relief valve sleeve (41) is connected to a plug-in relief valve. Two high-pressure oil cylinder assemblies, a plurality of mechanical measuring assemblies, an oil return guide pipe (13) and a high-pressure oil guide pipe (10) are respectively arranged on the right end of the oil storage cylinder connecting body (8). A plunger body (14) is arranged on the right end of the oil storage cylinder connecting body (8). The plunger body (14) is connected to the oil storage cylinder connecting body (8) through the two high-pressure oil cylinder assemblies, the oil return guide pipe (13) and the high-pressure oil guide pipe (10). The plurality of mechanical measuring assemblies pass through the plunger body (14). Four CVR one-way valves (15) are arranged on the plunger body (14). Two symmetrical holes are arranged on the outer wall of the plunger body (14), and plunger assemblies are respectively arranged in the holes. Plunger cover plates (18) are respectively arranged on the outer walls of the two plunger assemblies. An oil inlet overflow valve guide pipe (11) and a high-pressure oil line pipe (20) are respectively arranged on the right end of the plunger body (14). A lower overflow valve sleeve (12) is arranged on the right end of the oil inlet overflow valve guide pipe (11). A stepped ring assembly is provided at the right end of the plunger body (14), the stepped ring assembly is connected to the plunger body (14) via a plurality of connecting columns (42), a lower pressure relief valve and a relief valve are provided inside the stepped ring assembly, a lower valve body assembly and a connecting body (44) are provided at the right end of the stepped ring assembly, and an actuator is provided at the right end of the connecting body (44).

2. The downhole hydraulic power measuring mechanism for drilling according to claim 1, characterized in that: The right end of the high-pressure oil cylinder upper end cover (1) is provided with an internal thread, and the high-pressure oil cylinder upper end cover (1) is threadedly connected to the oil storage cylinder body (2).

3. The downhole hydraulic power measuring mechanism for drilling according to claim 1, characterized in that: The outer wall of the oil storage cylinder connecting body (8) is evenly provided with three grooves, the three grooves comprising: a first groove, a second groove and a third groove, the first groove and the third groove are provided with O-type sealing rings, the second groove is an oil path connecting groove, and a plurality of oil path openings are provided in the oil path connecting groove.

4. The downhole hydraulic power measuring mechanism for drilling according to claim 3, characterized in that: The upper pressure relief valve is composed of a pressure relief valve body (49), a pressure relief valve regulating sleeve (47) and a pressure relief valve stem (48); the pressure relief valve stem (48) is embedded in the pressure relief valve body (49); and the pressure relief valve regulating sleeve (47) is provided at the left end of the pressure relief valve stem (48).

5. The downhole hydraulic power measuring mechanism for drilling according to claim 4, characterized in that: The plug-in overflow valve and the upper pressure relief valve are respectively provided with oil passage holes which are in communication with the oil passage connecting grooves provided on the outer wall of the oil storage cylinder connecting body (8).

6. The downhole hydraulic power measuring mechanism for drilling according to claim 1, characterized in that: The high-pressure oil cylinder assembly is composed of a high-pressure oil cylinder (50), a high-pressure piston (51), a high-pressure oil cylinder spring seat (53) and a high-pressure oil cylinder spring (52); the mechanical measuring assembly is composed of a high-pressure piston jacket (22), a heavy hammer upper suspension cover (23), a high-pressure piston jacket lower end (24), a heavy hammer upper suspension (25), a ball head (26), a ball head suspension seat (27), a heavy hammer rod (29), a heavy hammer head (30) and a measuring assembly spring (28); The high-pressure oil cylinder (50) is a hollow cylindrical structure. The outer wall of the high-pressure oil cylinder (50) is provided with a through hole. The right end of the high-pressure oil cylinder (50) is provided with a high-pressure oil cylinder spring seat (53), and the left end is provided with a high-pressure piston (51). The high-pressure oil cylinder spring seat (53) is a cylindrical structure. The left end of the high-pressure oil cylinder spring seat (53) is embedded in the high-pressure oil cylinder (50). The outer wall of the high-pressure oil cylinder spring seat (53) is sleeved with a high-pressure oil cylinder spring (52). The high-pressure oil cylinder spring (52) limits the high-pressure piston (51), and the high-pressure piston (51) can move axially along the inner wall of the left end of the high-pressure oil cylinder (50); The weight hammer head (30) is a conical structure, and the bottom surface of the weight hammer head (30) is connected to the ball head (26) through a weight hammer rod (29). The high-pressure piston sleeve (22) is a cylindrical structure, and one end of the high-pressure piston sleeve (22) is provided with an external thread and the other end is provided with a circular hole. The bottom of the circular hole is provided with a weight upper suspension cover (23) and a weight upper suspension (25) in sequence. The outer wall of the ball head (26) is provided with a ball head suspension seat (27), and the bottom of the ball head suspension seat (27) is provided with a measuring assembly spring (28). The measuring assembly spring (28) is sleeved on the outer wall of the weight hammer rod (29).

7. The downhole hydraulic power measuring mechanism for drilling according to claim 1, characterized in that: The oil return conduit (13) and the high-pressure oil conduit (10) are symmetrically arranged; the oil return conduit (13) and the high-pressure oil conduit (10) are respectively embedded in the oil storage cylinder connector (8); and the upper pressure relief valve and the overflow valve sleeve (41) are respectively embedded in the oil storage cylinder connector (8).

8. The downhole hydraulic power measuring mechanism for drilling according to claim 6, characterized in that: The plunger body (14) is an annular structure. The left end surface of the plunger body (14) is evenly provided with a plurality of through holes, the number of the through holes matching the number of mechanical measuring components, and the weight rods (29) of the plurality of mechanical measuring components respectively pass through the through holes on the left end surface of the plunger body (14).

9. The downhole hydraulic power measuring mechanism for drilling according to claim 1, characterized in that: The plunger assembly comprises: a plunger (16), a plunger sleeve (17) and a plunger spring (19); the plunger (16) is a hollow cylindrical structure; the plunger (16) is arranged in the plunger sleeve (17); the plunger (16) can move axially in the plunger sleeve (17); a plunger spring (19) is arranged at the center of the plunger (16); the two plunger assemblies comprise: a first plunger assembly and a second plunger assembly.

10. The downhole hydraulic power measuring mechanism for drilling according to claim 9, characterized in that: The plunger cover plate (18) is fastened to the plunger assembly in symmetrical holes provided on the outer wall of the plunger body (14) by means of a plurality of screws.

11. The downhole hydraulic power measuring mechanism for drilling according to claim 8, characterized in that: Also includes: An oil storage cylinder jacket (7), an oil storage cylinder lower jacket (9), a plunger body inner jacket (31) and a plunger body jacket (32), wherein the plunger body (14) is provided with an oil storage cylinder jacket (7) and an oil storage cylinder lower jacket (9) at the left end thereof, the oil storage cylinder jacket (7) and the oil storage cylinder lower jacket (9) being respectively annular structures, the oil storage cylinder jacket (7) being provided on the outer wall of the plunger body (14), and the oil storage cylinder lower jacket (9) being provided on the inner wall of the plunger body (14); The right end of the plunger body (14) is provided with a plunger body inner sleeve (31) and a plunger body outer sleeve (32), respectively. The plunger body inner sleeve (31) and the plunger body outer sleeve (32) are respectively annular structures. The plunger body outer sleeve (32) is arranged on the outer wall of the plunger body (14), and the plunger body inner sleeve (31) is arranged on the inner wall of the plunger body (14).

12. The downhole hydraulic power measuring mechanism for drilling according to claim 11, characterized in that: The step ring assembly comprises: a step ring fixing seat (33), six step rings (34) and six step ring limiting nuts (35); the step ring fixing seat (33) is an annular structure; the step ring fixing seat (33) is arranged in the plunger body outer sleeve (32); six step rings (34) are evenly distributed on the right end of the step ring fixing seat (33); step ring limiting nuts (35) are respectively arranged on the right ends of the six step rings (34); the step ring limiting nuts (35) position the step rings (34); The step ring (34) is composed of two parts. The left end of the step ring (34) is a hollow cylindrical structure. The outer wall of the left end of the step ring (34) is provided with a notch. The right end of the step ring (34) is embedded in the step ring fixing seat (33). A heavy hammer head (30) is provided in the hollow cylindrical structure at the left end of each step ring (34).

13. The downhole hydraulic power measuring mechanism for drilling according to claim 12, characterized in that: The lower valve body assembly comprises: a lower valve body upper plate (36), a plurality of valve core sleeves (37), a plurality of valve core rods (38), a plurality of valve core springs (54), a lower valve body lower plate (39) and a plurality of lower valve body oil circuit inserts (40); the lower valve body upper plate (36) is an annular structure, the lower valve body upper plate (36) is arranged at the right end of the step ring fixing seat (33), the right end surface of the lower valve body upper plate (36) is uniformly provided with a plurality of through holes in the circumferential direction, the through holes are respectively embedded with valve core sleeves (37), the valve core sleeves (37), the valve core rods (38), the lower valve body oil circuit inserts (40) and the valve core springs (54) are the same in number, the valve core sleeve (37) is a hollow cylindrical structure, the outer walls of both ends of the valve core sleeve (37) are provided with steps extending outward, the valve core rod (38) is provided in the center of the valve core sleeve (37), the valve core rod (38) is a hollow structure, the center of the valve core rod (38) is A valve core spring (54) is provided, a lower valve body lower plate (39) is provided at the right end of the lower valve body upper plate (36), the lower valve body lower plate (39) is an annular structure, a plurality of through holes matching the lower valve body upper plate (36) are provided at the left end of the lower valve body lower plate (39), the right end of the valve core sleeve (37) is embedded in the lower valve body lower plate (39), a plurality of lower valve body oil circuit plugs (40) are respectively provided in the lower valve body lower plate (39), the lower valve The lower valve body oil circuit plug (40) corresponds to the valve core sleeve (37) one by one, the lower valve body oil circuit plug (40) is arranged at the right end of the valve core sleeve (37), the right end of the valve core spring (54) is connected to the lower valve body oil circuit plug (40), the valve core rod (38) can move axially in the center of the valve core sleeve (37), the valve core spring (54) limits the valve core rod (38), and the outer wall of the valve core sleeve (37) embedded in the lower valve body lower plate (39) is provided with a through hole.

14. The downhole hydraulic power measuring mechanism for drilling according to claim 13, characterized in that: Also includes: A plurality of connection column fixing bolts (43) and a plurality of connection body fixing bolts (45); the connection body (44) is connected to the right end of the lower valve body lower plate (39) via the plurality of connection body fixing bolts (45); and the plurality of connection column fixing bolts (43) respectively fix and connect a plurality of connection columns (42) and the step ring assembly.

15. The downhole hydraulic power measuring mechanism for drilling according to claim 12, characterized in that: Also includes: A connector outer shell (46), wherein the connector outer shell (46) is arranged on an outer wall of the connector (44).

16. The downhole hydraulic power measuring mechanism for drilling according to claim 1, characterized in that: Also includes: A plurality of oil storage cylinder connecting bolts (21), wherein the oil storage cylinder body (2) and the oil storage cylinder connecting body (8) are connected via the plurality of oil storage cylinder connecting bolts (21).

17. The downhole hydraulic power measuring mechanism for drilling according to claim 1, characterized in that: Also includes: Two balancing piston bolts (5) and two balancing piston bolt washers (6); the left end surface of the balancing piston (4) is evenly provided with four through holes, wherein the balancing piston bolt (5) and the balancing piston bolt washers (6) are respectively provided in the upper and lower symmetrical through holes.

18. The downhole hydraulic power measuring mechanism for drilling according to claim 2, characterized in that: The high-pressure oil cylinder upper end cover (1) is composed of two cylindrical structures, the radius of the left cylindrical structure is smaller than that of the right cylindrical structure, and the left cylindrical structure of the high-pressure oil cylinder upper end cover (1) is provided with three threaded holes in the circumference.

19. The downhole hydraulic power measuring mechanism for drilling according to claim 17, characterized in that: The balancing piston (4) is an annular structure, and is sleeved on the outer wall of the oil storage cylinder body (2). The right outer wall of the balancing piston (4) is evenly provided with a plurality of grooves.

20. The downhole hydraulic power measuring mechanism for drilling according to claim 10, characterized in that: The four CVR one-way valves (15) include: a first CVR one-way valve, a second CVR one-way valve, a third CVR one-way valve and a fourth CVR one-way valve; The first CVR one-way valve connects the oil return conduit (13) and the first plunger assembly, the second CVR one-way valve is symmetrically arranged with the first CVR one-way valve, and the second CVR one-way valve connects the first plunger assembly and the high-pressure oil line pipe (20); The third CVR one-way valve connects the high-pressure oil conducting pipe (10) and the second plunger assembly, the fourth CVR one-way valve and the third CVR one-way valve are symmetrically arranged, and the fourth CVR one-way valve connects the second plunger assembly and the oil inlet relief valve conducting pipe (11).

21. The downhole hydraulic power measuring mechanism for drilling according to claim 14, characterized in that: The connecting body (44) is an annular structure, and is provided with a plurality of through holes, wherein the plurality of through holes are respectively connected to the lower valve body oil circuit insert (40).

22. The downhole hydraulic power measuring mechanism for drilling according to claim 21, characterized in that: A plurality of support blocks are evenly arranged on the outer wall of the actuator in the circumferential direction, the number of the support blocks matches the number of the mechanical measuring components, and a support block piston cylinder is arranged in the support block, and the support block piston cylinder is connected to the valve core sleeve (37) through a plurality of through holes provided on the connecting body (44).

23. The downhole hydraulic power measuring mechanism for drilling according to claim 14, characterized in that: The lower valve body lower plate (39) is an annular structure, and the outer wall of the lower valve body lower plate (39) is provided with three grooves in sequence, the grooves at the left and right ends of the three grooves are respectively provided with sealing rings, and the outer wall of the middle groove is provided with a plurality of through holes.

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