CN115788374A - Fluid supercharger for underground operation - Google Patents

Abstract

The invention relates to a fluid pressurizer for underground operation, which comprises a pipe column, an extrusion driving pressurization assembly, a mechanical pressurization pump set and a walking assembly, wherein the pipe column comprises a pipe shell and a fluid channel arranged in the pipe shell, one end of the pipe shell is provided with a high-pressure water inlet connected with one end of the fluid channel, the extrusion driving pressurization assembly is assembled between the pipe shell and the fluid channel, an extrusion part of the extrusion driving pressurization assembly penetrates through a hole site matched with the side wall of the pipe shell, a main shaft extending towards two ends of the main shaft is rotatably arranged in the other end of the fluid channel, spiral blades extending to the two ends of the main shaft are arranged on the main shaft, the extrusion driving pressurization assembly is in transmission connection with the main shaft, the extrusion driving pressurization assembly is used for converting extrusion force received by the extrusion part into mechanical energy for driving the main shaft to rotate, and the mechanical pressurization pump set is assembled in the pipe shell and connected with a pipe cavity at one end of the fluid channel. The advantages are that: the effect of righting the tool string can be achieved, and the pressurization of the deep well and ultra-deep well downhole operation fluid is realized through double pressurization.

Description

A downhole operation fluid booster

technical field

The invention relates to downhole operation technology of oil and gas wells, in particular to a downhole operation fluid booster.

Background technique

With the continuous development of deep well and ultra-deep well operation technology, many problems that are difficult to solve by conventional operation technology and methods have been solved. The continuous increase in the number of cracks has put forward higher requirements for operating technology and operating tools. For deep wells and ultra-deep wells with high water injection pressure requirements, the conventional water injection process cannot meet the development needs. The conventional method is to install additional injection pumps on the ground, and increase the water injection pressure through the ground pressurization device to achieve normal water injection. However, this There are certain safety hazards in the method. Because the ground water injection pipeline has been corroded for a long time, unforeseen accidents of stabbing and leaking people will occur. At the same time, the ground injection pressure is limited, which is difficult to meet the production demand. The ground pressure is high, and the operation and maintenance are difficult.

At present, there are mainly two ways to pressurize: surface pressurization and underground pressurization. The equipment and process used for surface pressurization are relatively complex and expensive, and the application effect is greatly affected by the depth of the well. Therefore, although the speed increase effect is obvious, it has not been popularized and applied. The main advantage of downhole pressurization is that there is no need to change the existing process and equipment. Installing a pressurization device in the tool string can increase the pressure of part of the liquid to achieve the purpose of ultra-high pressure jet assisting rock breaking.

The currently disclosed patents, such as the Chinese patent CN A, include a housing, a plunger, an energy storage spring, a driving gear mechanism, a hydraulic cylinder, and a drill bit short circuit. Through fluid flow, the large gear and the pinion of the driving gear mechanism rotate to drive the piston to the hydraulic pressure. After the fluid in the cylinder is pressurized, the sealing valve is opened to achieve the purpose of fluid injection from the high-pressure flow channel and complete the jet flow. The device pressurizes the fluid through the hydraulic cylinder, releases it after reaching a certain pressure range, and solves the pressurization of the fluid during downhole operations. However, the reciprocating movement of the piston can only form intermittent high-pressure fluid. The energy storage springs and bearings of the structure will have a greater impact, which is of little significance to deep well operations.

Contents of the invention

The technical problem to be solved by the present invention is to provide a downhole operating fluid booster, which effectively overcomes the defects of the prior art.

The technical scheme that the present invention solves the problems of the technologies described above is as follows:

A fluid booster for downhole operations, including a pipe string, a squeeze-driven booster assembly, a mechanical booster pump set, and a traveling assembly. One end of the shell is provided with a high-pressure water inlet port connected to one end of the above-mentioned fluid channel, the above-mentioned squeeze-driven pressurized assembly is assembled between the above-mentioned tube shell and the fluid channel, and its extrusion part is fitted through the side wall of the above-mentioned tube shell The other end of the above-mentioned fluid channel is rotatably equipped with a main shaft extending toward its two ends, and the above-mentioned main shaft is provided with spiral blades extending to its two ends, and the above-mentioned extrusion drive booster assembly is connected to the above-mentioned main shaft , the above-mentioned extrusion drive booster assembly is used to convert the extrusion force received by its extrusion part into mechanical energy for driving the rotation of the above-mentioned main shaft, and the above-mentioned mechanical booster pump assembly is assembled in the above-mentioned tubular shell and connected to One end lumen, the above-mentioned mechanical booster pump group is used to extract the fluid flowing back from the other end of the above-mentioned tube shell, and inject it into the above-mentioned fluid passage to pressurize, the above-mentioned walking assembly is assembled outside the above-mentioned tube shell, and is used to drive the above-mentioned tube shell along Walk along the well wall.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, the extrusion-driven supercharging assembly includes multiple sets of first hydraulic cylinder assemblies and multiple sets of transmission boxes, and multiple sets of the above-mentioned transmission boxes surround the fluid passage at intervals. The above-mentioned transmission box includes a box body, a crankshaft and a plurality of second A hydraulic cylinder, the above-mentioned crankshaft is rotatably assembled in the above-mentioned box body, and extends toward the long axis direction of the above-mentioned tube shell, and the shaft head of the above-mentioned crankshaft corresponding to the other end of the above-mentioned tube shell goes out of the above-mentioned box body, and is equipped with a one-way pulley , the above-mentioned crankshaft is connected with a plurality of crank-connecting rods corresponding to the above-mentioned second hydraulic cylinders one by one, and the second pistons are installed in the above-mentioned second hydraulic cylinders, and the above-mentioned crank-connecting rods respectively extend into the corresponding above-mentioned second hydraulic cylinders , and connected to the second piston, the other end of the fluid channel is recessed to form an installation area, the other end of the main shaft extends into the above installation area, and is equipped with a first driven pulley, and a plurality of the one-way pulleys pass around Respective belt transmission connections, wherein one of the above-mentioned one-way pulleys is coaxially connected with a transmission shaft, and the above-mentioned transmission shaft is provided with a first driving pulley, and the above-mentioned first driving pulley and the first driven pulley are driven by a belt that surrounds the two Connected, multiple groups of the above-mentioned first hydraulic cylinder assemblies are assembled in the above-mentioned pipe shell, and are spaced around the surroundings of the above-mentioned fluid passages, each group of the above-mentioned first hydraulic cylinder assemblies includes a plurality of first hydraulic cylinders, and each group of multiple above-mentioned The number of the first hydraulic cylinder is the same as that of the multiple second hydraulic cylinders in each group and corresponds one by one. The cylinder bodies of the above-mentioned first hydraulic cylinders are respectively connected and communicated with the cylinder bodies of the corresponding above-mentioned second hydraulic cylinders through hydraulic pipelines. The first hydraulic cylinder is provided with a first piston, and the first piston is connected with a first piston rod, and the first piston rods are vertically passed through the through hole adapted on the side wall of the tube shell, and are connected with an extrusion plate, Among the plurality of extruding plates corresponding to the plurality of first hydraulic cylinders in the same group, at least one of the extruding plates is connected to the side wall of the tube shell through an elastic member.

Further, the mechanical booster pump set includes a booster cylinder, a turbine assembly, and a pumping pipeline. The other end of the casing is provided with a water inlet and a water suction port. One end of the pumping pipeline is connected and communicated with the water suction port one by one. , and one end of the above-mentioned pumping pipeline is provided with a first one-way valve, the other end of the above-mentioned pumping pipeline is connected and communicated with one end of the above-mentioned fluid passage, and the other end of the above-mentioned pumping pipeline is provided with a second one-way valve, the above-mentioned The cylinder body of the booster cylinder is connected to the middle section of the above-mentioned pumping pipeline through a pipeline. A booster piston is arranged inside the booster cylinder. The booster piston is connected to a connecting rod. The driving end of the turbine assembly is connected to an eccentric wheel. The rod is movably connected with the above-mentioned eccentric wheel, and the above-mentioned turbine assemblies are respectively arranged at positions close to the above-mentioned water inlet, and the above-mentioned turbine assemblies are used to convert fluid kinetic energy flowing back into the above-mentioned water inlet into mechanical energy driving the rotation of the above-mentioned eccentric wheel.

Further, the turbine assembly includes a first turbine, the first turbine has a water inlet and a water outlet, and turbine blades are rotatably installed inside, the rotating shaft of the turbine blades is connected to the rotation center of the eccentric wheel by transmission, and the intake of the first turbine The water port is close to the water inlet.

Further, the above-mentioned walking assembly includes multiple sets of walking wheels, and multiple sets of the above-mentioned walking wheels are assembled around the outer wall of one end of the above-mentioned pipe shell at intervals. For the wheel frame and the second turbine, the two above-mentioned wheel bodies are respectively coaxially assembled at both ends of the above-mentioned wheel shaft, and the two above-mentioned wheel frames are respectively installed on the two ends of the above-mentioned wheel shaft, and the two above-mentioned wheel frames are respectively connected to the above-mentioned wheel through elastic members. One side of the frame is assembled and connected, the above-mentioned mounting frame is assembled on the outer wall of the above-mentioned tube shell, the above-mentioned second turbine is assembled on one side of the above-mentioned mounting frame, its water inlet is connected with the water outlet of the above-mentioned first turbine through a pipeline, and the above-mentioned second turbine There is a turbine blade inside, the rotating shaft of the turbine blade is connected with the second driving pulley, the second driven pulley is assembled on the above-mentioned wheel shaft, and the above-mentioned second driving pulley and the second driven pulley are connected by a belt around the two.

Further, the cross-section of the above-mentioned fluid channel is circular, and the diameter of one end thereof is larger than that of the other end.

The beneficial effects of the present invention are: on the one hand, by controlling the gap between the arc-shaped plate and the well wall, the effect of straightening the tool string is achieved; To solve the problem, it realizes the pressurization of downhole operating fluid in deep wells and ultra-deep wells.

Description of drawings

Fig. 1 is a schematic structural view of the downhole operation fluid booster of the present invention when it is used downhole;

Fig. 2 is the structural elevation view of the downhole operation fluid booster of the present invention;

Fig. 3 is a structural cross-sectional view of the downhole operation fluid booster of the present invention;

Fig. 4 is a structural schematic diagram of the fluid booster for downhole operation of the present invention with part of the casing removed;

Fig. 5 is a partial structural schematic diagram of the downhole operation fluid booster of the present invention;

Fig. 6 is an exploded view of the structure of the transmission box in the downhole operation fluid booster of the present invention;

Fig. 7 is an exploded view of the structure of the mechanical booster pump group in the downhole operation fluid booster of the present invention;

Fig. 8 is a schematic structural view of the travel wheel set in the downhole operation fluid booster of the present invention.

In the accompanying drawings, the list of parts represented by each label is as follows:

11. Tube shell; 12. Fluid channel; 3. Main shaft; 31. First driven pulley; 32. Spiral blade; 41. Box; 42. Crankshaft; 43. Second hydraulic cylinder; 51. First hydraulic cylinder; 61. Booster cylinder; 62. Turbine assembly; 71. Mounting frame; 72. Wheel shaft; 73. Wheel body; 74. Wheel frame; 75. Second turbine; 111. High-pressure water inlet interface; 112. Water inlet; 113. Suction port; 411, one-way pulley; 412, crank connecting rod; 413, extrusion plate; 431, second piston; 511, first piston; 611, pumping pipeline; 612, first one-way valve; 613, the first Two one-way valves; 614, booster piston; 615, connecting rod; 621, eccentric wheel; 622, the first turbine; 721, the second driven pulley; 751, the second driving pulley; 4111, transmission shaft; 4112, The first driving pulley.

Detailed ways

The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

Embodiment: As shown in Figures 1, 2, 3, 4, and 5, the downhole operating fluid booster of this embodiment includes a pipe string, a squeeze-driven booster assembly, a mechanical booster pump set, and a travel assembly. The pipe string includes a shell 11 and a fluid channel 12 arranged in the shell 11. One end of the shell 11 is provided with a high-pressure water inlet port 111 connected to one end of the fluid channel 12. The extrusion drives the booster assembly Assembled between the above-mentioned tube shell 11 and the fluid channel 12, its extruding part passes through the hole where the side wall of the above-mentioned tube shell 11 is fitted, and the other end of the above-mentioned fluid channel 12 is rotatably equipped with a tube extending toward its two ends. The main shaft 3 is provided with helical blades 32 extending to both ends of the main shaft 3. The above-mentioned extruding drive supercharging assembly is connected with the above-mentioned main shaft 3. The above-mentioned extruding driving supercharging assembly is used to control the The extrusion force is converted into mechanical energy for driving the above-mentioned main shaft 3 to rotate. The above-mentioned mechanical booster pump set is assembled in the above-mentioned tube shell 11 and connected to one end lumen of the above-mentioned fluid passage 12. The above-mentioned mechanical booster pump set is used to extract the above-mentioned tube The fluid flowing back from the other end of the shell 11 is injected into the above-mentioned fluid channel 12 to pressurize. The above-mentioned walking assembly is assembled outside the above-mentioned tubular shell 11 to drive the above-mentioned tubular shell 11 to walk along the well wall.

The downhole use process is as follows:

The device is placed downhole (a in the figure refers to the well), and a high-pressure water source is injected from the high-pressure water inlet port 111 at one end of the casing 11 (that is, the upper end placed downhole), and the high-pressure water enters the fluid channel 12, and then flows through the When the helical blade 32 on the main shaft 3, it will drive the main shaft 3 to rotate and generate a swirl (vortex), thereby pressurizing the fluid (primary pressurization). In the mechanical booster pump group, the mechanical booster pump group will pump the fluid under the supercharger into the fluid channel 12 to achieve the supercharging effect (double supercharging), and the walking assembly realizes the walking of the device along the well wall during the whole process , at the same time, if the device is skewed, the extruded part protruding from the side wall of the tubular shell 11 will contact the well wall and squeeze the extruded part. After the extruded part is pressed, the pressure will be converted into mechanical energy that drives the main shaft 3 to rotate , so as to achieve the purpose of boosting the auxiliary main shaft 3 rotation.

Generally, the other end of the tube shell 11 is packaged with a bottom plate, the fluid channel 12 runs through the middle of the bottom plate, and the bottom plate is provided with holes for fluid to enter the inside of the tube shell 11 .

As a preferred embodiment, as shown in FIG. 6 , the extrusion-driven booster assembly includes multiple sets of first hydraulic cylinder assemblies and multiple sets of transmission boxes, and multiple sets of the above-mentioned transmission boxes surround the fluid channel 12 at intervals. The above-mentioned transmission box includes a box body 41, a crankshaft 42 and a plurality of second hydraulic cylinders 43. The above-mentioned crankshaft 42 is rotatably assembled in the above-mentioned box body 41, and extends toward the long axis direction of the above-mentioned tube shell 11. The above-mentioned crankshaft 42 corresponds to the above-mentioned The shaft head at the other end of the pipe shell 11 passes outside the above-mentioned box body 41 and is equipped with a one-way pulley 411. The above-mentioned crankshaft 42 is connected with a plurality of crank connecting rods 412 corresponding to the above-mentioned second hydraulic cylinder 43 one-to-one. Both hydraulic cylinders 43 are equipped with second pistons 431, and the above-mentioned crank connecting rods 412 respectively extend into the corresponding second hydraulic cylinders 43 and are connected to the above-mentioned second pistons 431. The other end of the fluid channel 12 is recessed to form a In the installation area, the other end of the above-mentioned main shaft 3 extends into the above-mentioned installation area, and is equipped with a first driven pulley 31, and a plurality of the above-mentioned one-way pulleys 411 are connected by driving around their respective belts (indicated by p in the figure), one of which Above-mentioned one-way belt pulley 411 is coaxially connected with power transmission shaft 4111, and above-mentioned transmission shaft 4111 is provided with first driving pulley 4112, and above-mentioned first driving pulley 4112 and first driven pulley 31 pass the belt (in the figure) that surrounds both. c refers to) transmission connection, multiple sets of the above-mentioned first hydraulic cylinder assemblies are assembled in the above-mentioned tubular shell 11, and are spaced around the surroundings of the above-mentioned fluid passage 12, and each set of the above-mentioned first hydraulic cylinder assemblies includes multiple first hydraulic cylinders 51, a plurality of the above-mentioned first hydraulic cylinders 51 of each group and a plurality of the above-mentioned second hydraulic cylinders 43 of each group have the same number and one-to-one correspondence. generation) is connected and communicated with the cylinder block of the corresponding above-mentioned second hydraulic cylinder 43, the above-mentioned first hydraulic cylinder 51 is provided with a first piston 511, and the above-mentioned first piston 511 is connected with a first piston rod, and the above-mentioned first piston rods are all It vertically passes through the through hole adapted on the side wall of the above-mentioned tube shell 11, and is connected with an extrusion plate 413. Among the plurality of above-mentioned extrusion plates 413 corresponding to the above-mentioned first hydraulic cylinders 51 of the same group, at least one of the above-mentioned The extruding plate 413 is connected to the side wall of the tube case 11 through an elastic member.

In the above embodiment, when the casing 11 is fed downhole and collides with the well wall, the extrusion plate 413 will shrink under pressure, and at the same time, it will drive the first piston rod and the first piston 511 to move in the first hydraulic cylinder. 51 shrinks and moves, so that the hydraulic oil inside the first hydraulic cylinder 51 is pressed into the second hydraulic cylinder 43 through the hydraulic pipeline, and the hydraulic oil pressed into the second hydraulic cylinder 43 will act on the second piston 431, so that the first hydraulic cylinder 51 The two pistons 431 drive the crank connecting rod 412 to move linearly, and the crank connecting rod 412 can drive the crankshaft 42 to rotate during the moving process. Since the collision between the casing 11 and the well wall in the well may be multi-directional, the extrusion plate is arranged from various directions. 413 can make each transmission box can run, thereby driving their respective crankshafts 42 to rotate, and each crankshaft 42 can realize linkage through the one-way pulley 411 connected respectively through the belt during the rotation process, and finally realize the rotation of the transmission shaft 4111, and the transmission When the shaft 4111 rotates, the auxiliary main shaft 3 rotates through the first driving pulley 4112 and the first driven pulley 31 primary belt (consistent with the rotation direction of the main shaft 3), so as to realize the purpose of the auxiliary main shaft 3 rotating and supercharging.

It should be added that the one-way pulley 411 is a prior art, which is similar to the ratchet mechanism of the rear wheel of a bicycle, and prevents the crankshafts of multiple transmission boxes from interfering at different speeds.

In this embodiment, the first hydraulic cylinder assembly and the transmission case are respectively provided with four groups, and the corresponding extruding plates 413 are also provided with four groups, and are distributed around the tube shell 11. The number of extruding plates 413 in each group is the same as The number of a plurality of first hydraulic cylinders 51 of each group is consistent, and one, two or three extruding plates 413 are connected with the pipe shell 11 by an elastic member (spring), and the elastic member can be connected between the extruding plates. When 413 expands with the well wall, it shrinks and moves toward the shell 11. After the collision and separation, the extrusion plate 413 is pushed back. There is no four extrusion plates 413 in each group, and the four arc-shaped plates are on the same plane at the same time, so that the extrusion plate 413 cannot be obtained. In the case of pressure, the four extruded plates 413 will always be in a state where a part is high (stretched) and a part is low (shrinks close to the shell 11)).

As a preferred embodiment, as shown in Figure 7, the mechanical booster pump set includes a booster cylinder 61, a turbine assembly 62 and a pumping pipeline 611, and the other end of the tube shell 11 is provided with a water inlet 112 and a water suction port 113 One end of the above-mentioned pumping pipeline 611 is connected and communicated with the above-mentioned water suction port 113 one by one, and one end of the above-mentioned pumping pipeline 611 is provided with a first check valve 612, and the other end of the above-mentioned pumping pipeline 611 is connected to the above-mentioned fluid channel One end of 12 is connected and communicated, and the other end of the above-mentioned pumping pipeline 611 is provided with a second check valve 613, and the cylinder body of the above-mentioned booster cylinder 61 is connected to the middle section of the above-mentioned pumping pipeline 611 through a pipeline, and the above-mentioned booster cylinder 61 There is a booster piston 614 inside, the booster piston 614 is connected with a connecting rod 615, the driving end of the above-mentioned turbine assembly 62 is connected with an eccentric wheel 621, the above-mentioned connecting rod 615 is movably connected with the above-mentioned eccentric wheel 621, and the above-mentioned turbine assembly 62 is respectively set At a position close to the water inlet 112 , the turbine assembly 62 is used to transform the kinetic energy of fluid flowing back into the water inlet 112 into mechanical energy for driving the eccentric wheel 621 to rotate.

In the above embodiment, during operation, the fluid below the device flows back into the casing 11 through the water inlet 112, and then the fluid enters the turbine assembly 62, and is converted into mechanical energy to drive the connecting rod 615 and the booster piston 614 to reciprocate. , there are two actions, one, when the booster piston 614 is pulled outward relative to the booster cylinder 61, the fluid in the casing 11 enters the pumping pipeline 611 through the water suction port 113 and the first one-way valve 612; two, the booster piston When 614 is pushed inward relative to the booster cylinder 61, a positive pressure acting on the pumping pipeline 611 is generated. Since the first one-way valve 612 only allows external fluid to enter through the suction port 113, the second one-way valve 613 only allows pumping in The fluid in the pipeline 611 flows out through the other end, therefore, the pressure will press the fluid pumped into the pipeline 611 into the fluid passage 12 (the mechanism is similar to a well), thereby pressurizing the interior of the fluid passage 12 .

As a preferred embodiment, the above-mentioned turbine assembly 62 includes a first turbine 622, the above-mentioned first turbine 622 has a water inlet and a water outlet, and a turbine blade (indicated by w in the figure) is rotatably installed inside it, and the rotating shaft of the above-mentioned turbine blade The water inlet of the first turbine 622 is close to the water inlet 112 in transmission connection with the rotation center of the eccentric wheel 621 .

In the above embodiment, the turbine assembly 62 adopts the fluid turbine device of the prior art. When fluid enters and impacts the turbine blades, the turbine blades will rotate, and drive the eccentric wheel 621 to rotate through the rotating shaft, thereby driving the eccentric wheel 621 to drive the connecting rod 615 and The booster piston 614 reciprocates relative to the booster cylinder 61 , and the whole design utilizes the impact force of fluid backflow to achieve booster.

As a preferred embodiment, as shown in Figure 8, the above-mentioned walking assembly includes multiple sets of walking wheels (indicated by b in the figure), and multiple sets of the above-mentioned walking wheels are assembled on the outer wall of one end of the above-mentioned tube shell 11 at intervals. All around, above-mentioned walking wheel set all comprises installation frame 71, wheel shaft 72, two wheel bodies 73, two wheel frames 74 and second turbine 75 (its structure is consistent with first turbine 622), two above-mentioned wheel bodies 73 are respectively the same as The shaft is assembled on the two ends of the above-mentioned wheel shaft 72, and the two above-mentioned wheel frames 74 are installed on the two ends of the above-mentioned wheel shaft 72 respectively. One side is assembled and connected, the above-mentioned installation frame 71 is assembled on the outer wall of the above-mentioned pipe shell 11, the above-mentioned second turbine 75 is assembled on one side of the above-mentioned installation frame 71, and its water inlet is communicated with the water outlet of the above-mentioned first turbine 622 through a pipeline. The inside of the second turbine 75 has turbine blades, the rotating shaft of the turbine blades is connected with a second driving pulley 751, and the above-mentioned wheel shaft 72 is equipped with a second driven pulley 721. Connected by a belt drive that goes around both.

In the above embodiment, during downhole operations, the two wheel bodies 73 are close to the well wall under the elastic force of the elastic member. During the operation of the turbine assembly 62, the fluid entering the first turbine 622 will pass through the first turbine 622. The water outlet of the second turbine 75 is sent into the interior of the second turbine 75, and then the turbine blades of the second turbine 75 are driven to rotate, thereby driving the rotating shaft of the turbine blades to rotate, and then driving the second driving pulley 751 to interact with the second driven pulley 721 and the belt to realize The rotation of the wheel body 73, the rotation of the wheel body 73 can drive the device to feed downward along the well wall, and the whole traveling process is realized by the kinetic energy of the fluid, and the effect of energy saving and supercharging can be achieved by making full use of the fluid energy.

In this embodiment, the cross-section of the fluid channel 12 is circular, and the diameter at one end is larger than that at the other end. The variable diameter connection between one end and the other end of the fluid channel 12 adopts a tapered design for a smooth transition.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (6)

1. A fluid booster for downhole operations, characterized in that: it comprises a pipe string, an extrusion-driven booster assembly, a mechanical booster pump group and a walking assembly, and the pipe string includes a shell (11) and is arranged on The fluid channel (12) in the tube shell (11), one end of the tube shell (11) is provided with a high-pressure water inlet port (111) connected to one end of the fluid channel (12), the extrusion The drive pressurization assembly is assembled between the tube shell (11) and the fluid channel (12), and its extruded part passes through the hole where the side wall of the tube shell (11) is fitted, and the fluid channel (12) The other end of ) is rotatably equipped with a main shaft (3) extending towards its two ends, and the main shaft (3) is provided with a helical blade (32) extending to its two ends, and the extrusion drives the supercharging assembly In transmission connection with the main shaft (3), the extrusion-driven supercharging assembly is used to convert the extrusion force received by its extrusion part into mechanical energy for driving the main shaft (3) to rotate, and the supercharging The pump set is assembled in the tube shell (11) and connected to one end lumen of the fluid passage (12), and the mechanical booster pump set is used to extract the fluid flowing back from the other end of the tube shell (11) , and injected into the fluid channel (12) to pressurize, the traveling assembly is assembled outside the casing (11) to drive the casing (11) to walk along the well wall. 2. A downhole operation fluid booster according to claim 1, characterized in that: said extrusion drive booster assembly includes multiple sets of first hydraulic cylinder assemblies and multiple sets of transmission boxes, multiple sets of said transmission The box is spaced around the fluid passage (12), the transmission box includes a box (41), a crankshaft (42) and a plurality of second hydraulic cylinders (43), and the crankshaft (42) is rotatably assembled on In the casing (41), and extending towards the long axis direction of the casing (11), the crankshaft (42) passes through the casing ( 41), and equipped with a one-way pulley (411), the crankshaft (42) is connected with a plurality of crank connecting rods (412) corresponding to the second hydraulic cylinder (43), the second The hydraulic cylinders (43) are equipped with second pistons (431), and the crank connecting rods (412) respectively extend into the corresponding second hydraulic cylinders (43) and connect the second pistons (431) , the other end side wall of the fluid channel (12) is recessed to form an installation area, the other end of the main shaft (3) protrudes into the installation area, and is equipped with a first driven pulley (31), a plurality of the The one-way pulleys (411) are connected by driving around their respective belts, one of the one-way pulleys (411) is coaxially connected with a drive shaft (4111), and the drive shaft (4111) is provided with a first driving pulley (4112), the first driving pulley (4112) and the first driven pulley (31) are connected through a belt drive around the two, and multiple sets of the first hydraulic cylinder assemblies are assembled on the tube shell (11) and spaced around the fluid channel (12), each group of the first hydraulic cylinder assembly includes a plurality of first hydraulic cylinders (51), each group of a plurality of the first hydraulic cylinders (51 ) is the same as the number of multiple second hydraulic cylinders (43) in each group and corresponds one by one, and the cylinder body of the first hydraulic cylinder (51) is connected with the corresponding second hydraulic cylinder (43) through hydraulic pipelines respectively. ) cylinders are connected and communicated, the first hydraulic cylinder (51) is provided with a first piston (511), the first piston (511) is connected with a first piston rod, and the first piston rods are vertical Through the through hole adapted on the side wall of the tube shell (11), and connected with the extruding plate (413), the plurality of extruding plates (413) corresponding to the same group of a plurality of the first hydraulic cylinders (51) Among the plates (413), at least one extruding plate (413) is connected to the side wall of the tube shell (11) through an elastic member. 3. A downhole operation fluid booster according to claim 1, characterized in that: the mechanical booster pump set comprises a booster cylinder (61), a turbine assembly (62) and a pumping pipeline (611), The other end of the tube shell (11) is provided with a water inlet (112) and a water suction port (113), and one end of the pumping pipeline (611) is connected and communicated with the water suction port (113) one by one, and One end of the pumping pipeline (611) is provided with a first one-way valve (612), the other end of the pumping pipeline (611) is connected and communicated with one end of the fluid channel (12), and the pump The other end of the inlet pipeline (611) is provided with a second one-way valve (613), and the cylinder body of the booster cylinder (61) is connected to the middle section of the pump inlet pipeline (611) through a pipeline, and the booster cylinder (61) is provided with a booster piston (614), the booster piston (614) is connected with a connecting rod (615), the drive end of the turbine assembly (62) is connected with an eccentric wheel (621), and the connecting rod (614) is connected with an eccentric wheel (621). The rod (615) is movably connected with the eccentric wheel (621), and the turbine assemblies (62) are respectively arranged at positions close to the water inlet (112), and the turbine assemblies (62) are used to direct backflow into the The fluid kinetic energy of the water inlet (112) is transformed into mechanical energy driving the rotation of the eccentric wheel (621). 4. A downhole operation fluid booster according to claim 3, characterized in that: the turbine assembly (62) comprises a first turbine (622), and the first turbine (622) has a water inlet and an outlet The water inlet is equipped with turbine blades rotating inside, and the rotating shaft of the turbine blades is connected with the rotation center of the eccentric wheel (621), and the water inlet of the first turbine (622) is close to the water inlet (112). 5. A fluid booster for downhole operations according to claim 4, characterized in that: the travel assembly includes multiple sets of travel wheels, and multiple sets of the travel wheels are assembled in the tubular shell at intervals Around one end outer wall of (11), said traveling wheel set all comprises installation frame (71), wheel axle (72), two wheel bodies (73), two wheel frames (74) and second turbine (75), two The two wheel bodies (73) are respectively coaxially assembled on the two ends of the wheel shaft (72), and the two wheel frames (74) are respectively installed on the two ends of the wheel shaft (72). The wheel frames (74) are assembled and connected to one side of the mounting frame (71) through elastic parts respectively, and the mounting frame (71) is assembled on the outer wall of the tube casing (11), and the second turbine (75) Assembled on one side of the mounting bracket (71), its water inlet communicates with the water outlet of the first turbine (622) through a pipeline, and the second turbine (75) has turbine blades inside, and the rotating shaft of the turbine blades A second driving pulley (751) is connected, a second driven pulley (721) is mounted on the axle (72), and the second driving pulley (751) and the second driven pulley (721) pass through The belt drive connection of the two. 6 . The fluid booster for downhole operations according to claim 1 , characterized in that: the fluid passage ( 12 ) has a circular cross section, and a pipe diameter at one end thereof is larger than that at the other end. 6 .

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