Pipeline gas-liquid buffer device for temporary plugging diversion fracturing

Abstract

The pipeline gas-liquid buffering device comprises a rectangular block, a strip-shaped groove, a sealing cover, a side cylinder, a motor, a V-shaped pipe, a gas-liquid guide pipe, a circular hole, a circular ring, a rubber ring piece, a circular plate, a first disc, a second disc, a guide block push-pull column, a flange, a guide groove, a sliding rod, a three-blade block, a piston and a reset spring. The device is reasonable in structure, the function of providing reciprocating driving power is achieved, a push-pull column located in a side cylinder is driven to be in a stretching state, a connected circular plate can stretch into a strip-shaped groove or be pulled out of the strip-shaped groove, and the effect of sealing space airflow compression change in the strip-shaped groove is achieved; and the change of the compressed air pressure is opposite to the change of the pressure in the gas-liquid guide pipe, and meanwhile, the piston located in the V-shaped pipe moves along with the V-shaped pipe, so that the overpressure of a gas-liquid fluid is buffered, the low pressure is supplemented, and the stability of the fracturing gas-liquid output pressure is ensured.

Description

Technical Field

[0001] The present application relates to the field of petroleum, and in particular to a pipeline gas-liquid buffer device for temporary plugging and diverting fracturing. Background Art

[0002] Fracturing refers to a method of using hydraulic force (injecting fracturing fluid into oil and gas wells and generating high pressure) to create cracks in oil and gas layers. Its main function is to increase the seepage capacity of oil and gas and increase oil and gas production.

[0003] Temporary plugging and diverting fracturing typically uses carbon dioxide or liquids for fracturing and oil recovery. However, the pressure during gas or liquid output can be excessively high or low, which can affect the effectiveness of stable fracturing and oil recovery. Therefore, a pipeline gas-liquid buffer device for temporary plugging and diverting fracturing has been proposed to address this issue. Summary of the Invention

[0004] In this embodiment, a pipeline gas-liquid buffer device for temporary plugging and diverting fracturing is provided to solve the problems in the prior art.

[0005] According to one aspect of the present application, a pipeline gas-liquid buffer device for temporary plugging and diverting fracturing is provided, comprising a rectangular block, a tympanic membrane assembly, a push-pull assembly, a reciprocating drive assembly and a gas-liquid contact assembly, wherein a strip groove is provided on the top of the rectangular block, and the bottom of the strip groove is communicated with the interior of the gas-liquid conduit through a V-shaped tube, the tympanic membrane assembly is arranged in two circular holes, the push-pull assembly is arranged in a side cylinder, and the side cylinder mouth and the outer port of the circular hole are fixedly connected to each other, the reciprocating drive assembly is arranged at one end of the side cylinder, and the gas-liquid contact assembly is arranged in a tube body on one side of the V-shaped tube.

[0006] Furthermore, the eardrum assembly includes a circular ring, a rubber ring sheet and a circular plate, the inner ring wall of the circular ring and the outer edge of the rubber ring sheet are fixedly connected to each other, the circular ring is installed on the inner ring wall of the circular hole, and the inner ring edge of the rubber ring sheet and the edge of the circular plate are fixedly connected to each other.

[0007] Furthermore, the push-pull assembly includes a push-pull column, a flange and a guide block. One end of the push-pull column is fixedly connected to one side of the circular plate through the flange. Four guide grooves are equidistantly provided on the annular surface of the push-pull column. The corresponding parts in the four guide grooves are slidably connected to the inner ring wall of the side cylinder through the guide block.

[0008] Furthermore, the reciprocating drive assembly includes a motor, a first disc and a second disc. The motor is installed on the closed end face of the side cylinder, and the first disc is installed on the end of the motor shaft located in the side cylinder. The first disc and the second disc are in sliding contact with each other. The circular surface on one side of the first disc and the circular surface on one side of the second disc are both annular corrugated surfaces. The second disc is installed on the end face of the other end of the push-pull column.

[0009] Furthermore, the gas-liquid contact assembly includes a sliding rod, a three-leaf block, a piston and a return spring. The three-leaf block is installed in the tube body on one side of the V-shaped tube, and the middle part of the three-leaf block slides through the sliding rod. One end of the sliding rod is fixedly connected to the end face of one end of the piston sliding in the V-shaped tube. A return spring is installed on the sliding rod between the piston and the three-leaf block.

[0010] Furthermore, both sides of the interior of the strip-shaped groove are connected to the outside through circular holes, and a sealing cover is installed at the notch of the strip-shaped groove.

[0011] Through the above-mentioned embodiments of the present application, the connected first disc is driven to rotate by running the motor and under the action of the corrugated edge surface on one side of the first disc and the corrugated edge surface on one side of the second disc sliding contact, the effect of moving the second disc back and forth in a straight line is achieved, and the function of providing reciprocating driving power is realized. By driving the push-pull column located in the side cylinder to be in an extended state, the connected circular plate can be extended into the strip groove or pulled out of the strip groove, achieving the effect of compressing the airflow in the sealed strip groove space, and the change in the size of the compressed air pressure is opposite to the pressure change in the gas-liquid conduit. At the same time, the piston located in the V-tube follows the movement, which is beneficial to buffer the overpressure of the gas-liquid flow body and supplement the low pressure, thereby ensuring the stability of the fracturing gas and liquid output pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0013] Figure 1 A three-dimensional diagram of the overall structure of an embodiment of the present application;

[0014] Figure 2 This is a schematic diagram of the internal structure of the side cylinder according to an embodiment of the present application;

[0015] Figure 3 This is a schematic diagram of the internal structure of one side of a V-shaped tube according to an embodiment of the present application;

[0016] Figure 4 This is a cross-sectional view of a rectangular block structure according to an embodiment of the present application.

[0017] In the figure: 1. rectangular block, 2. strip groove, 3. sealing cover, 4. side cylinder, 5. motor, 6. V-shaped tube, 7. gas-liquid conduit, 8. circular hole, 9. circular ring, 10. rubber ring piece, 11. circular plate, 12. first circular disc, 13. second circular disc, 14. guide block, 15. push-pull column, 16. flange, 17. guide groove, 18. slide rod, 19. three-leaf block, 20. piston, 21. return spring. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0019] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0020] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0021] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to express a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0022] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0023] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] The pipeline gas-liquid buffer device in this embodiment can be applied to the fracturing and oil recovery used in petroleum. For example, this embodiment provides the following fracturing vehicle, in which the tympanic membrane assembly, push-pull assembly, reciprocating drive assembly and gas-liquid contact assembly in this embodiment can be used to adjust the gas-liquid output pressure.

[0025] This fracturing vehicle includes a chassis and a fracturing pump arranged on the chassis; it is characterized in that it also includes a heat dissipation box arranged on the chassis, the heat dissipation box is provided with a fracturing fluid inlet, a fracturing fluid outlet, an inlet for a medium to be cooled, and an outlet for a medium to be cooled, the fracturing fluid and the medium to be cooled entering the heat dissipation box are isolated and can exchange heat; the fracturing fluid outlet is connected to the fracturing fluid input port of the fracturing pump; a fracturing fluid containing chamber is formed in the heat dissipation box, the fracturing fluid inlet and the fracturing fluid outlet are respectively connected to the fracturing fluid containing chamber; a heat dissipation pipe is provided in the heat dissipation box, and both ends of the heat dissipation pipe are respectively connected to the inlet for the medium to be cooled and the outlet for the medium to be cooled.

[0026] The fracturing fluid inlet and the outlet of the medium to be cooled are both located on the first side wall of the heat dissipation box; the fracturing fluid outlet and the inlet of the medium to be cooled are both located on the second side wall of the heat dissipation box, and the first side wall and the second side wall are arranged opposite to each other; a fracturing fluid circulation pipe and a heat dissipation pipe are provided in the heat dissipation box, and the two ends of the fracturing fluid circulation pipe are respectively connected to the fracturing fluid inlet and the fracturing fluid outlet; the two ends of the heat dissipation pipe are respectively connected to the inlet of the medium to be cooled and the outlet of the medium to be cooled; a cooling medium accommodating cavity is formed in the heat dissipation box, and the cooling medium inlet and the cooling medium outlet are respectively communicated with the cooling medium accommodating cavity; a fracturing fluid circulation pipe is provided in the heat dissipation box, and the two ends of the fracturing fluid circulation pipe are respectively connected to the fracturing fluid inlet and the fracturing fluid outlet.

[0027] Of course, this embodiment can also be used for other structures of fracturing oil recovery equipment. No further description is given here, and the pipeline gas-liquid buffer device of the embodiment of the present application is introduced below.

[0028] See also Figure 1-4 As shown, a pipeline gas-liquid buffer device for temporary plugging and diverting fracturing includes a rectangular block 1, a tympanic membrane assembly, a push-pull assembly, a reciprocating drive assembly and a gas-liquid contact assembly. A strip groove 2 is provided on the top of the rectangular block 1, and the bottom of the strip groove 2 is communicated with the inside of the gas-liquid conduit 7 through a V-shaped tube 6. The tympanic membrane assembly is arranged in two circular holes 8, the push-pull assembly is arranged in a side cylinder 4, and the mouth of the side cylinder 4 and the outer port of the circular hole 8 are fixedly connected to each other, the reciprocating drive assembly is arranged at one end of the side cylinder 4, and the gas-liquid contact assembly is arranged in a tube body on one side of the V-shaped tube 6.

[0029] The eardrum assembly includes a ring 9, a rubber ring sheet 10 and a circular plate 11. The inner ring wall of the ring 9 and the outer edge of the rubber ring sheet 10 are fixedly connected to each other. The ring 9 is installed on the inner ring wall of the circular hole 8. The inner ring edge of the rubber ring sheet 10 and the edge of the circular plate 11 are fixedly connected to each other; the push-pull assembly includes a push-pull column 15, a flange 16 and a guide block 14. One end of the push-pull column 15 is fixedly connected to one side of the circular plate 11 through the flange 16. Four guide grooves 17 are equidistantly provided on the annular surface of the push-pull column 15. The corresponding parts in the four guide grooves 17 are slidably connected to the inner ring wall of the side cylinder 4 through the guide block 14; the reciprocating drive assembly includes a motor 5, a first disc 12 and a second disc 13. The motor 5 is installed on the closed end face of the side cylinder 4, and the motor located inside the side cylinder 4 A first disc 12 is installed at the end of the 5-axis rod, and the first disc 12 and the second disc 13 are in sliding contact with each other. The circular surface on one side of the first disc 12 and the circular surface on one side of the second disc 13 are both annular corrugated surfaces, and the second disc 13 is installed on the end face of the other end of the push-pull column 15; the gas-liquid contact component includes a slide rod 18, a three-leaf block 19, a piston 20 and a return spring 21. The three-leaf block 19 is installed in the tube body on one side of the V-shaped tube 6, and the middle part of the three-leaf block 19 slides through the slide rod 18. One end of the slide rod 18 is fixedly connected to the end face of one end of the piston 20 sliding in the V-shaped tube 6. A return spring 21 is installed on the slide rod 18 between the piston 20 and the three-leaf block 19; both sides of the interior of the strip groove 2 are connected to the outside through the circular hole 8, and the notch of the strip groove 2 is installed with a sealing cover 3.

[0030] When the present application is in use, when the fracturing oil recovery gas or liquid pressure in the gas-liquid conduit 7 is too high and unstable, the motor 5 is driven to rotate the connected first disc 12, and the corrugated edge surface on one side of the first disc 12 is in sliding contact with the corrugated edge surface on one side of the second disc 13, so as to achieve the effect of reciprocating movement of the second disc 13 in a straight line, thereby realizing the function of providing reciprocating driving power;

[0031] When the second disc 13 moves back and forth in a straight line, by driving the push-pull column 15 located in the side cylinder 4 to be in an extended state, the connected circular plate 11 can be extended into the strip groove 2 or pulled out of the strip groove 2, thereby achieving the effect of compressing the air flow in the space of the sealed strip groove 2, and the change in the size of the compressed air pressure is opposite to the pressure change in the gas-liquid conduit 7. At the same time, the piston 20 located in the V-shaped tube 6 follows the movement, which is beneficial to buffering the overpressure of the gas-liquid flow and supplementing the low pressure, thereby ensuring the stability of the fracturing gas and liquid output pressure.

[0032] The benefits of this application are:

[0033] 1. The present invention has a reasonable structure. By operating the motor 5 to drive the connected first disc 12 to rotate, and by the corrugated edge surface on one side of the first disc 12 slidingly contacting the corrugated edge surface on one side of the second disc 13, the second disc 13 is moved back and forth in a straight line, thereby providing a reciprocating driving force.

[0034] 2. The present application has a reasonable structure. By driving the push-pull column 15 located in the side cylinder 4 to be in an extended state, the connected circular plate 11 can be extended into the strip groove 2 or pulled out of the strip groove 2, thereby achieving the effect of compressing the air flow in the space of the sealed strip groove 2, and the change in the size of the compressed air pressure is opposite to the pressure change in the gas-liquid conduit 7. At the same time, the piston 20 located in the V-tube 6 follows the movement, which is beneficial to buffer the overpressure of the gas-liquid fluid and supplement the low pressure, thereby ensuring the stability of the fracturing gas and liquid output pressure.

[0035] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A pipeline gas-liquid buffer device for temporary plugging and diverting fracturing, characterized by: The invention comprises a rectangular block (1), a tympanic membrane assembly, a push-pull assembly, a reciprocating drive assembly and a gas-liquid contact assembly, wherein a strip groove (2) is provided on the top of the rectangular block (1), and the bottom of the strip groove (2) is communicated with the inside of a gas-liquid conduit (7) through a V-shaped tube (6), the tympanic membrane assembly is arranged in two circular holes (8), the push-pull assembly is arranged in a side cylinder (4), and the tube mouth of the side cylinder (4) and the outer port of the circular hole (8) are fixedly connected to each other, the reciprocating drive assembly is arranged at one end of the side cylinder (4), and the gas-liquid contact assembly is arranged in a tube body on one side of the V-shaped tube (6).

2. The pipeline gas-liquid buffer device for temporary plugging and diverting fracturing according to claim 1 is characterized by: The eardrum assembly comprises a circular ring (9), a rubber ring piece (10) and a circular plate (11), wherein the inner ring wall of the circular ring (9) and the outer edge of the rubber ring piece (10) are fixedly connected to each other, the circular ring (9) is mounted on the inner ring wall of the circular hole (8), and the inner ring edge of the rubber ring piece (10) and the edge of the circular plate (11) are fixedly connected to each other.

3. The pipeline gas-liquid buffer device for temporary plugging and diverting fracturing according to claim 1 is characterized by: The push-pull assembly comprises a push-pull column (15), a flange (16) and a guide block (14). One end of the push-pull column (15) is fixedly connected to one side of the circular plate (11) via the flange (16). Four guide grooves (17) are equidistantly formed on the annular surface of the push-pull column (15). Corresponding portions in the four guide grooves (17) are slidably connected to the inner annular wall of the side cylinder (4) via the guide block (14).

4. The pipeline gas-liquid buffer device for temporary plugging and diverting fracturing according to claim 1 is characterized by: The reciprocating drive assembly comprises a motor (5), a first disc (12) and a second disc (13), wherein the motor (5) is mounted on the closed end surface of the side cylinder (4), and the first disc (12) is mounted on the shaft end of the motor (5) located in the side cylinder (4), the first disc (12) and the second disc (13) are in sliding contact with each other, a circular surface on one side of the first disc (12) and a circular surface on one side of the second disc (13) are both annular corrugated surfaces, and the second disc (13) is mounted on the other end surface of the push-pull column (15).

5. The pipeline gas-liquid buffer device for temporary plugging and diverting fracturing according to claim 1 is characterized in that: The gas-liquid contact assembly includes a slide rod (18), a three-leaf block (19), a piston (20) and a return spring (21). The three-leaf block (19) is installed in a tube body on one side of the V-shaped tube (6), and the middle part of the three-leaf block (19) slides through the slide rod (18). One end of the slide rod (18) is fixedly connected to the end face of one end of the piston (20) sliding in the V-shaped tube (6). A return spring (21) is installed on the slide rod (18) between the piston (20) and the three-leaf block (19).

6. The pipeline gas-liquid buffer device for temporary plugging and diverting fracturing according to claim 1 is characterized by: Both sides of the interior of the strip groove (2) are connected to the outside through circular holes (8), and a sealing cover (3) is installed at the notch of the strip groove (2).

Images