A synchronous fracturing high-pressure shunt device and system

Abstract

This invention discloses a synchronous fracturing high-pressure diversion device and system. The synchronous fracturing high-pressure diversion device includes a diversion shell and a valve core drive mechanism. The valve inlet channel of the valve inlet pipe section, the valve core drive cavity of the valve cavity section, and the first and second valve outlet channels of the valve outlet pipe section of the diversion shell are sequentially connected. The valve core assembly of the valve core drive mechanism is rotatably disposed in the valve core drive cavity and forms a first valve core channel and a second valve core channel. The first and second valve core channels extend along the length direction of the valve core drive cavity to cooperate with the valve inlet channel and the two valve outlet channels to form a first diversion channel and a second diversion channel. The drive component can drive the valve core assembly to rotate to adjust the flow rate of the two diversion channels. Thus, a fracturing system can use the synchronous fracturing high-pressure diversion device to distribute fracturing flow and adjust fracturing displacement to different fracturing wells, thereby reducing fracturing costs and the difficulty of adjusting fracturing displacement.

Description

Technical Field

[0001] This invention belongs to the field of oil and gas field development technology, and particularly relates to a synchronous fracturing high-pressure diversion device and system. Background Technology

[0002] In recent years, thanks to the large-scale development of unconventional oil and gas, horizontal well 3D well networks and horizontal well hydraulic fracturing technologies have made significant progress. During horizontal well fracturing, multiple surface fracturing truck sets and manifold systems are required to carry out fracturing operations. High-pressure pump truck sets inject high-pressure fracturing fluid and proppant into the formation, breaking open the target layer and creating fractures, ultimately forming a complex 3D fracture network, increasing the formation contact area, and achieving volumetric modification.

[0003] Currently, large-scale fracturing typically utilizes three-dimensional horizontal well network technology, requiring simultaneous fracturing of multiple wells and zipper-style fracturing. When deploying manifolds on the surface, each well needs its own fracturing system, with multiple fracturing trucks connected to a single well via manifolds. Furthermore, during fracturing, the fracturing flow rate sometimes needs adjustment based on formation and engineering conditions. However, in actual field operations, adjusting the flow rate is difficult, involves numerous and dangerous procedures, and is not economically efficient. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies of the existing technology, the present invention provides a synchronous fracturing high-pressure diversion device and system, which aims to solve the technical problems of existing multi-well synchronous fracturing requiring each well to be equipped with a separate fracturing system and the difficulty in adjusting the fracturing flow rate.

[0005] To achieve the above objectives, a first aspect of the present invention provides a synchronous fracturing high-pressure diversion device, wherein the synchronous fracturing high-pressure diversion device includes: a diversion shell and a valve core driving mechanism; the diversion shell includes an inlet valve pipe section, a valve cavity section, and an outlet valve pipe section connected in sequence, the inlet valve pipe section forming an inlet valve channel, the outlet valve pipe section forming a first outlet valve channel and a second outlet valve channel spaced apart, the valve cavity section forming a valve core driving cavity, wherein a first end of the valve core driving cavity is connected to the inlet valve channel, and a second end is connected to the first outlet valve channel and the second outlet valve channel respectively; the valve core driving mechanism... The device includes a valve core assembly and a drive component. The valve core assembly is rotatably disposed within a valve core drive cavity and forms a first valve core channel and a second valve core channel spaced apart. Both the first and second valve core channels extend along the length of the valve core drive cavity. The first valve core channel connects the inlet valve channel and the first outlet valve channel to form a first flow divider. The second valve core channel connects the inlet valve channel and the second outlet valve channel to form a second flow divider. The drive component drives the valve core assembly to rotate, thereby adjusting the flow rate through the first and second flow dividers.

[0006] In this embodiment of the invention, the valve core assembly includes a valve core body, a first stop body, and a second stop body. The first stop body and the second stop body are respectively disposed on the inner wall of the valve core drive cavity, with a valve inlet channel between them, and both extend along the length direction of the valve core drive cavity. The valve core body includes a rotating core part that is driven and connected to a drive member and a spacer plate part disposed on the periphery of the rotating core part. The rotating core part is rotatably disposed in the inner circle formed by the first stop body and the second stop body, and the periphery of the rotating core part is respectively attached to and abuts against the first stop body and the second stop body to form a valve core flow space. The spacer plate part extends between the first stop body and the second stop body and is attached to and abuts against the inner wall of the valve core drive cavity to divide the valve core flow space to form a first valve core channel and a second valve core channel.

[0007] In this embodiment of the invention, at least one of the first stop body and the second stop body is provided with a T-shaped tenon-and-mortise sliding connection with the inner wall of the valve core drive cavity, so that the corresponding stop body can be axially pushed into or pulled out of the valve core drive cavity.

[0008] In this embodiment of the invention, both the first stop body and the second stop body include a fixing part disposed on the inner wall of the valve core driving cavity and an abutting part detachably disposed on the side of the fixing part facing the partition plate part.

[0009] In this embodiment of the invention, the cross-sections of the valve core flow space and the spacer plate are both arranged in a fan-shaped annular pattern along the direction from the inlet valve section to the outlet valve section, and the cross-sectional areas are both arranged in an increasing manner.

[0010] In this embodiment of the invention, the inlet valve pipe section includes an inlet valve end cap detachably connected to the valve cavity section, and an inlet valve pipe body disposed on the side of the inlet valve end cap away from the valve cavity section. The inlet valve channel extends from the inlet valve pipe body through the inlet valve end cap and is arranged in a gradually expanding manner. The shape of the channel opening of the inlet valve channel transitions from a circle to a fan-shaped annulus along the direction from the inlet valve pipe body toward the inlet valve end cap. The first stop body and the second stop body are disposed on opposite sides of the inlet valve channel in a circumferential direction, and their ends are fitted with the inner side of the inlet valve end cap. The first stop body and the second stop body also have the solid part of the inlet valve end cap between them and the inner wall of the inlet valve channel.

[0011] In this embodiment of the invention, the valve cavity section and the valve outlet pipe section are integrally formed. The first valve outlet channel and the second valve outlet channel both extend from the valve outlet pipe section through the end of the valve cavity section and are respectively connected to the valve core drive cavity. The first valve outlet channel and the second valve outlet channel are both gradually narrowed in the direction from the valve cavity section toward the valve outlet pipe section, and the shape of the channel openings transitions from a fan-shaped annular shape to a circular shape. The inner cavity of the valve cavity section has a first step portion and a second step portion formed between the two valve outlet channels and the valve core drive cavity for correspondingly fitting with the ends of the first stop body and the second stop body. The first stop body and the second stop body also have solid portions of the step portion between them and the peripheral walls of the corresponding valve outlet channels.

[0012] In an embodiment of the invention, the partition plate has a first side surface facing the first stop body for abutting against the first stop body, and a second side surface facing the second stop body for abutting against the second stop body. When the first side surface and the second side surface abut against the corresponding stop body, the front part near the inlet valve pipe section contacts the rear part near the outlet valve pipe section before the first side surface and the second side surface contact the corresponding stop body.

[0013] In this embodiment of the invention, a replaceable guide vane is installed in the valve inlet channel.

[0014] To achieve the above objectives, a second aspect of the present invention also provides a synchronous fracturing system, wherein the synchronous fracturing system includes a sand-fluid mixing device, a pump truck device, and a synchronous fracturing high-pressure diversion device as described above. The sand-fluid mixing device is used to mix fracturing fluid and fracturing sand and guide the mixed sand-fluid to multiple pump truck units arranged in parallel in the pump truck device through a first pipeline. The multiple pump truck units pump the mixed sand-fluid to different fracturing wells through a second pipeline, and the synchronous fracturing high-pressure diversion device is provided on the first pipeline and / or the second pipeline of the pump truck device.

[0015] Through the above technical solution, the synchronous fracturing high-pressure diversion device provided in the embodiments of the present invention has the following beneficial effects:

[0016] In the above technical solution, since it includes a flow divider housing and a valve core drive mechanism, the inlet valve pipe section of the flow divider housing forms an inlet valve channel, and the outlet valve pipe section forms a first outlet valve channel and a second outlet valve channel spaced apart. The valve cavity section located between the inlet valve pipe section and the outlet valve pipe section forms a valve core drive cavity, and the valve core drive cavity connects the inlet valve channel and the two outlet valve channels. The valve core assembly of the valve core drive mechanism is rotatably disposed in the valve core drive cavity and forms a first valve core channel and a second valve core channel spaced apart. The first valve core channel is used to connect the inlet valve channel and the first outlet valve channel to form a first flow divider channel, and the second valve core channel is used to connect the inlet valve channel and the second outlet valve channel to form a flow divider channel. The system forms a second diversion channel, and the driving component can drive the valve core assembly to rotate. The rotation of the valve core assembly can change the position of the first valve core channel and the second valve core channel, thereby adjusting the flow rate of the first and second diversion channels. Thus, a fracturing system can distribute the fracturing flow rate to different fracturing wells through the synchronous fracturing high-pressure diversion device, so that when synchronously fracturing different fracturing wells, it is not necessary to arrange the fracturing system separately for each well. In addition, the valve core drive mechanism also facilitates the adjustment of the fracturing displacement for different fracturing wells, thereby achieving the goal of reducing fracturing costs and reducing the difficulty of adjusting the fracturing displacement.

[0017] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a synchronous fracturing high-pressure diversion device according to an embodiment of the present invention;

[0020] Figure 2 This is a disassembly diagram of a synchronous fracturing high-pressure diversion device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the valve inlet pipe section from one perspective according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the valve inlet pipe section from another perspective according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the valve core assembly according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the inlet valve pipe section and valve core assembly according to an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the valve cavity section and the valve outlet pipe section from one perspective according to an embodiment of the present invention;

[0026] Figure 8 This is a structural schematic diagram of the valve cavity section and the valve outlet pipe section from another perspective according to an embodiment of the present invention;

[0027] Figure 9 This is a structural schematic diagram of the valve cavity section and the outlet valve pipe section from another perspective according to an embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the valve cavity section according to an embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the valve inlet channel according to an embodiment of the present invention;

[0030] Figure 12 These are schematic diagrams illustrating various embodiments of the replaceable structure of the valve core according to the present invention.

[0031] Figure 13 This is a schematic diagram of a synchronous fracturing system according to an embodiment of the present invention;

[0032] Figure 14This is a schematic diagram of the structure of a synchronous fracturing system according to another embodiment of the present invention;

[0033] Figure 15 This is a schematic diagram of the structure of a synchronous fracturing system according to another embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures

[0035] Detailed Implementation

[0036] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0037] The synchronous fracturing high-pressure diversion device and system of the present invention are described below with reference to the accompanying drawings.

[0038] like Figure 1 and Figure 2 As shown, the present invention provides a synchronous fracturing high-pressure diversion device, wherein the synchronous fracturing high-pressure diversion device includes:

[0039] The flow divider housing 100 includes an inlet valve pipe section 110, a valve cavity section 120, and an outlet valve pipe section 130 connected in sequence. The inlet valve pipe section 110 forms an inlet valve channel 111, and the outlet valve pipe section 130 forms a first outlet valve channel 131 and a second outlet valve channel 132 that are spaced apart. The valve cavity section 120 forms a valve core drive cavity 121, and the first end of the valve core drive cavity 121 is connected to the inlet valve channel 111, and the second end is connected to the first outlet valve channel 131 and the second outlet valve channel 132 respectively.

[0040] The valve core drive mechanism 200 includes a valve core assembly 201 and a drive member. The valve core assembly 201 is rotatably disposed in the valve core drive cavity 121 and forms a first valve core channel 202 and a second valve core channel 203 spaced apart. The first valve core channel 202 and the second valve core channel 203 both extend along the length direction of the valve core drive cavity 121. The first valve core channel 202 is used to connect the inlet valve channel 111 and the first outlet valve channel 131 to form a first diversion channel. The second valve core channel 203 is used to connect the inlet valve channel 111 and the second outlet valve channel 132 to form a second diversion channel. The drive member is used to drive the valve core assembly 201 to rotate so as to adjust the flow rate of the first diversion channel and the second diversion channel.

[0041] In the above technical solution, since it includes a flow divider housing 100 and a valve core drive mechanism 200, the inlet valve pipe section 110 of the flow divider housing 100 forms an inlet valve channel 111, and the outlet valve pipe section 130 forms a first outlet valve channel 131 and a second outlet valve channel 132 spaced apart. The valve cavity section 120 located between the inlet valve pipe section 110 and the outlet valve pipe section 130 forms a valve core drive cavity 121, and the valve core drive cavity 121 connects the inlet valve channel 111 and the two outlet valve channels. The valve core assembly 201 of the valve core drive mechanism 200 is rotatably disposed in the valve core drive cavity 121 and forms a first valve core channel 202 and a second valve core channel 203 spaced apart. The first valve core channel 202 is used to connect the inlet valve channel 111 and the first outlet valve channel 131 to form a first flow divider channel, and the second... The valve core channel 203 is used to connect the inlet valve channel 111 and the second outlet valve channel 132 to form a second diversion channel. The driving component can drive the valve core assembly 201 to rotate. The rotation of the valve core assembly 201 can change the position of the first valve core channel 202 and the second valve core channel 203, thereby adjusting the flow rate of the first diversion channel and the second diversion channel. Thus, a fracturing system can distribute the fracturing flow rate to different fracturing wells through the synchronous fracturing high-pressure diversion device, so that when synchronously fracturing different fracturing wells, it is not necessary to arrange the fracturing system separately for each well. In addition, the valve core drive mechanism 200 is also convenient for adjusting the fracturing flow rate of different fracturing wells, thereby achieving the purpose of reducing fracturing costs and reducing the difficulty of adjusting the fracturing flow rate.

[0042] Specifically, the two ends of the valve core assembly 201 are rotatably disposed at the two ends of the valve cavity section 120, and at least one end of the valve core assembly 201 extends out of the valve cavity section 120 and is drivenly connected to a driving member, which may be a rotary motor. Furthermore, a sealing structure is provided between the end of the valve core assembly 201 extending out of the valve cavity section 120 and the valve cavity section 120. Of course, the invention is not limited to this; the driving member may also be disposed within the valve core driving cavity 121.

[0043] See Figure 1 , Figure 2 and Figure 5In this embodiment of the invention, the valve core assembly 201 includes a valve core body 204, a first stop body 205, and a second stop body 206. The first stop body 205 and the second stop body 206 are respectively disposed on the inner wall of the valve core drive cavity 121, spaced apart by the valve inlet channel 111, and both extend along the length direction of the valve core drive cavity 121. The valve core body 204 includes a rotating core portion 207 drivenly connected to the drive member and a spacer plate portion 208 disposed on the periphery of the rotating core portion 207. 07 is rotatably disposed in the inner ring formed by the first stop body 205 and the second stop body 206, and the periphery of the rotating core 207 is respectively attached to and abuts against the first stop body 205 and the second stop body 206 to form a valve core flow space. The partition plate 208 extends between the first stop body 205 and the second stop body 206 and is attached to and abuts against the inner wall of the valve core drive cavity 121 to divide the valve core flow space to form the first valve core channel 202 and the second valve core channel 203. The first valve core channel 202 is formed by the enclosure of the first stop body 205, the valve core body 204, the spacer plate portion 208, and the inner wall of the valve core drive cavity 121. The second valve core channel 203 is formed by the enclosure of the second stop body 206, the valve core body 204, the spacer plate portion 208, and the inner wall of the valve core drive cavity 121. The driving member can drive the spacer plate portion 208 to rotate between the first stop body 205 and the second stop body 206, so as to adjust the flow area of ​​the first valve core channel 202 and the second valve core channel 203, thereby adjusting the flow rate of the first diversion channel and the second diversion channel. Meanwhile, the first stop 205 and the second stop 206 can act as stops when the partition plate 208 rotates to two extreme positions. When the partition plate 208 rotates to the first position where it abuts against the first stop 205, the first valve core channel 202 is closed and the second valve core channel 203 is fully open. Correspondingly, the first diversion channel is closed and the flow rate is 0, while the second diversion channel is fully open and the flow rate reaches its maximum. When the partition plate 208 rotates to the second position where it abuts against the second stop 206, the second valve core channel 203 is closed and the first valve core channel 202 is fully open. Correspondingly, the second diversion channel is closed and the flow rate is 0, while the first diversion channel is fully open and the flow rate reaches its maximum.

[0044] Specifically, the rotating core 207 can be cylindrical, and the sides of the first stop 205 and the second stop 206 facing the rotating core 207 are located on the same circumference. The circumference of the cylindrical rotating core 207 is circumferentially fitted to the first stop 205 and the second stop 206, respectively. Meanwhile, a shaft mounting hole 209 is provided through the axis of the rotating core 207. The driving shaft passes through the shaft mounting hole 209, with both ends extending out of the rotating core 207 and rotatably positioned at both ends of the valve cavity section 120. At least one end of the driving shaft extends out of the valve cavity section 120 and is drivenly connected to the driving component.

[0045] Of course, the present invention is not limited to this. The valve core body 204 does not need to be provided with a partition plate portion 208. The first valve core channel 202 and the second valve core channel 203 on the valve core assembly 201 can also be directly opened on the valve core body 204. That is, the flow area of ​​the first valve core channel 202 and the second valve core channel 203 themselves is not variable. The driving member drives the valve core body 204 to rotate. It can rotate to a third position where the first valve core channel 202 is blocked and closed by the solid part of the valve inlet pipe section 110, and the second valve core channel 203 is fully open and connected to the valve inlet channel 111. It can also rotate to a fourth position where the second valve core channel 203 is blocked and closed by the solid part of the valve inlet pipe section 110, and the first valve core channel 202 is fully open and connected to the valve inlet channel 111. Thus, the flow rate of the first diversion channel and the second diversion channel can also be adjusted.

[0046] like Figure 5 and Figure 7 As shown, in this embodiment of the invention, at least one of the first stop body 205 and the second stop body 206 is slidably connected to the inner wall of the valve core drive cavity 121 via a T-shaped tenon and mortise joint, so that the corresponding stop body can be axially pushed into or pulled out of the valve core drive cavity 121. By slidably connecting the first stop body 205 or the second stop body 206 to the inner wall of the valve core drive cavity 121 via a T-shaped tenon and mortise joint, it is convenient to assemble or disassemble the first stop body 205 or the second stop body 206 on the inner wall of the valve core drive cavity. Specifically, the T-shaped tenon and mortise connection structure is located on the side of the first stop 205 or the second stop 206 away from the partition plate 208. The T-shaped tenon and mortise connection structure includes a T-shaped mortise 122 and a T-shaped tenon 210. The T-shaped mortise 122 is located on the inner wall of the valve cavity drive chamber, and the T-shaped tenon 210 is located on the side of the first stop 205 or the second stop 206 away from the partition plate 208. When connecting the first stop 205 or the second stop 206 to the inner wall of the valve cavity drive chamber, the T-shaped tenon 210 is aligned with the T-shaped mortise 122 and pushed. Meanwhile, both the first stop body 205 and the second stop body 206 have T-shaped tenons 210 on the side opposite to the partition plate portion 208. Correspondingly, two T-shaped tenons 122 are formed on the inner wall of the valve chamber drive cavity for the T-shaped tenons 210 of the first stop body 205 and the second stop body 206 to be installed one-to-one. Of course, the present invention is not limited to this, and the first stop body 205 and the second stop body 206 can also be fixedly connected to the inner wall of the valve chamber drive cavity by threaded parts.

[0047] Please see again Figure 5In this embodiment of the invention, both the first stop body 205 and the second stop body 206 include a fixing part 211 disposed on the inner wall of the valve core driving cavity 121 and an abutment part 212 detachably disposed on the side of the fixing part 211 facing the partition plate part 208. That is, the abutment part 212 serves to stop the partition plate part 208. During the abutment and stopping process, the abutment part 212 is prone to wear. By detachably disposing it on the fixing part 211, it is easy to replace the abutment part 212.

[0048] See Figure 5 and Figure 6 In this embodiment of the invention, the cross-sections of the valve core flow space and the spacer plate portion 208 along the direction from the inlet valve section 110 to the outlet valve section 130 are both fan-shaped and annular, with the cross-sectional areas increasing progressively. Setting the cross-section of the valve core flow space as fan-shaped means that the outer wall of the rotating core portion 207 enclosing the valve core flow space and the inner wall of the valve core drive cavity 121 can both be circumferential surfaces. This facilitates standardized production of the rotating core portion 207 of the valve core body 204 and the inner wall of the valve core drive cavity 121. Simultaneously, the progressively increasing cross-sectional area of ​​the valve core flow space, where the first and second stop plates form the inner wall of the valve core flow space on one side, ensures the smooth flow of fracturing sand fluid within the first valve core channel 202 and the second valve core channel 203. This also better accommodates the design where the inlet valve section 110 has only one inlet valve channel 111, while the outlet valve pipe has two outlet valve channels, providing sufficient dimensions for the flow area design of the two outlet valve channels. Furthermore, by setting the cross-section of the partition plate portion 208 to a fan-shaped annular shape, the cross-sectional shape of the first valve core channel 202 and the second valve core channel 203 can also be fan-shaped annular, which facilitates the control of the flow area ratio of the first valve core channel 202 and the second valve core channel 203. In addition, by setting the cross-sectional area of ​​the partition plate portion 208 to increase incrementally, the channel opening size at the rear end of the first valve core channel 202 and the second valve core channel 203 can be avoided from being too large.

[0049] like Figures 2 to 6As shown, in this embodiment of the invention, the inlet valve pipe section 110 includes an inlet valve end cap 112 detachably connected to the valve cavity section 120, and an inlet valve pipe body 113 disposed on the side of the inlet valve end cap 112 away from the valve cavity section 120. The inlet valve channel 111 extends from the inlet valve pipe body 113 through the inlet valve end cap 112 and is arranged in a gradually expanding manner. The shape of the channel opening of the inlet valve channel 111 transitions from a circle to a fan-shaped annulus in the direction along the inlet valve pipe body 113 toward the inlet valve end cap 112, that is, the inlet valve pipe body 113 is away from the inlet valve. The opening shape of the channel at one end of the end cap 112 can be circular, which facilitates the docking of the valve inlet pipe body 113 with the upstream manifold. The opening shape of the valve inlet channel 111 on the valve inlet end cap 112 can be fan-shaped, which allows for better communication with the downstream first valve core channel 202 and second valve core channel 203. Furthermore, the valve inlet channel 111 is arranged in a gradually expanding manner along the flow direction of the fracturing fluid, which can ensure the smooth flow of the fracturing fluid in the valve inlet channel 111. At the same time, the first stop body 205 and the second stop body 206 are arranged circumferentially on opposite sides of the valve inlet channel 111, and their ends are fitted against the inner side of the valve inlet end cap 112. The first stop body 205 and the second stop body 206 also have a solid portion of the valve inlet end cap 112 between them and the inner wall of the valve inlet channel 111. When it is necessary to close the first diversion channel and fully open the second diversion channel, the partition plate 208 can be driven to rotate between the first stop 205 and the inner wall of the inlet valve channel 111. Since the solid part of the inlet valve end cap 112 is still left at this position, the partition plate 208 can abut against the first stop 205 on the first plate side and against the inlet valve end cap 112 at the end, so as to ensure the stability of the closure of the first diversion channel. When it is necessary to close the second diversion channel and fully open the first diversion channel, the partition plate 208 can be driven to rotate between the second stop 206 and the inner wall of the inlet valve channel 111. Since the solid part of the inlet valve end cap 112 is also left at this position, the partition plate 208 can abut against the second stop 206 on the second plate side and against the inlet valve end cap 112 at the end, so as to ensure the stability of the closure of the second diversion channel.

[0050] Specifically, the valve inlet channel 111 can smoothly transition from a circular channel opening to a fan-shaped annular channel opening. That is, the inner wall of the valve inlet channel 111 has a streamlined curved surface design. During the design, the blending function in Creo software can be used to streamline the transition between two openings with different cross-sections, so that the flow channel cross-section smoothly transitions from a circle to a fan-shaped annular shape. This reduces the frictional resistance on the flow channel wall when the flow is split, preventing the wall from being eroded and failing.

[0051] like Figures 7 to 9As shown, in this embodiment of the invention, the valve cavity section 120 and the valve outlet pipe section 130 are integrally formed. The first valve outlet channel 131 and the second valve outlet channel 132 both extend from the valve outlet pipe section 130 through the end of the valve cavity section 120 and are respectively connected to the valve core drive cavity 121. That is, the first valve outlet channel 131 and the second valve outlet channel 132 each include a first section on the valve outlet pipe section 130 and a second section at the end of the valve cavity section 120. The first valve outlet channel 131 and the second valve outlet channel 132 are both gradually tapering in the direction from the valve cavity section 120 toward the valve outlet pipe section 130, and the shape of the channel openings transitions from a fan-shaped annulus to a circle. The two channel openings at the end furthest from the valve cavity section 120 can both be circular, which facilitates the connection of the first valve outlet channel 131 and the second valve outlet channel 132 of the valve outlet pipe section 130 with the downstream manifold. The channel openings of the first valve outlet channel 131 and the second valve outlet channel 132 on the valve cavity section 120 can be fan-shaped, which allows for better communication with the upstream first valve core channel 202 and the second valve core channel 203. Furthermore, the first valve outlet channel 131 and the second valve outlet channel 132 are arranged in a gradually narrowing manner along the flow direction of the fracturing sand fluid, which can ensure the smooth flow of the fracturing sand fluid in the two valve outlet channels. Meanwhile, the inner cavity of the valve chamber section 120 has a first step portion 123 and a second step portion 124 formed between the two valve outlet channels and the valve core drive cavity 121, which are respectively fitted to the ends of the first stop body 205 and the second stop body 206. The first stop body 205 and the second stop body 206, as part of the valve core assembly 201, are placed in the valve core drive cavity 121. Furthermore, in order for the two valve core channels to be connected to the two valve outlet channels in a one-to-one correspondence, the first stop body 205 and the second stop body 206 must be… The first and second outer sides of the two valve outlet channels are respectively located on the first and second outer sides. It should be noted that the first and second outer sides of the two valve outlet channels are relative to the position between the two valve outlet channels being located on the inner side of the two valve outlet channels. Therefore, in order to achieve a one-to-one abutment between the ends of the first stop body 205 and the second stop body 206 and the first step portion 123 and the second step portion 124 respectively, the first step portion 123 and the second step portion 124 should also be correspondingly located on the first and second outer sides of the two valve outlet channels. Simultaneously, the first stop body 205 and the second stop body 206 each have a solid portion of the step portion between them and the peripheral wall of the corresponding valve outlet channel.When the first diversion channel needs to be closed and the second diversion channel needs to be fully opened, the partition plate 208 rotates to the first plate side to abut against the first stop body 205, and the front end abuts against the inlet valve end cover 112, and the rear end can also abut against the first step 123; when the second diversion channel needs to be closed and the first diversion channel needs to be fully opened, the partition plate 208 rotates to the second plate side to abut against the second stop body 206, and the front end abuts against the inlet valve end cover 112, and the rear end can also abut against the second step 124, thereby ensuring the stability of the partition plate 208 closure.

[0052] In this embodiment of the invention, the spacer plate portion 208 has a first side surface facing the first stop body 205 for abutting against the first stop body 205, and the spacer plate portion 208 has a second side surface facing the second stop body 206 for abutting against the second stop body 206. When the first side surface and the second side surface abut against the corresponding stop body, the front part near the inlet valve pipe section 110 contacts the rear part near the outlet valve pipe section 130 first, thereby preventing the proppant (fracturing sand) from clogging and accumulating, which would prevent the valve from being closed.

[0053] like Figure 6 As shown, the valve core assembly 201 has sealing grooves on the valve core body 204, the first stop body 205, and the second stop body 206. A sealing element 213 is provided in the sealing groove. The sealing groove on the valve core body 204 includes a first section that surrounds the rotating shaft mounting hole 209 on the end face of the rotating core part 207 and a second section that extends from the end face of the spacer part 208 to the periphery. The sealing grooves on the first stop body 205 and the second stop body 206 extend from their respective end faces to the periphery.

[0054] like Figure 10 As shown, in this embodiment of the invention, the outer side of the valve cavity section 120 is provided with a placement seat 125, and the placement seat 125 can be placed horizontally on the ground or on a horizontal support surface.

[0055] In embodiments of the present invention, such as Figure 11 (b) and Figure 11 As shown in (c), a replaceable guide vane is installed within the valve inlet passage 111. The replaceable guide vane can reduce turbulence and erosion of the tip of the spacer plate portion 208. Specifically, there can be multiple replaceable guide vanes, which are sequentially spaced along the extending direction of the valve inlet passage 111. Of course, the invention is not limited to this, as... Figure 11 As shown in (a), it is also possible not to install a replaceable guide vane in the inlet valve channel 111 in order to reduce hydraulic friction.

[0056] In this embodiment of the invention, the tip (the side facing the valve inlet channel 111) and the side of the spacer plate portion 208 of the valve core body 204 are both replaceable structures, that is, the valve core body 204 is provided in separate parts, and the corresponding parts can be replaced after being eroded and worn, such as... Figure 12 As shown, there are multiple ways to implement a replaceable structure.

[0057] Specifically, as can be seen from the structure of the high-pressure diversion device provided by this invention, the internal cavity of the diversion device has a streamlined feature, which is fully adapted to the diversion of fracturing fluid under special conditions such as high pressure, high speed, and proppant carrying during synchronous fracturing. Simultaneously, under high pressure, high speed, and proppant carrying conditions, depending on the design fluid Reynolds number, placing one, two, or more streamlined guide vanes inside the inlet serves two purposes: firstly, it keeps the fluid in a laminar state as much as possible, reducing the turbulence or flow disturbance caused by boundary layer disturbance at the bottom of the inlet, thereby reducing cavitation and erosion of the high-pressure diversion device; secondly, it adds one or more stages of guide vanes before the high-speed erosion zone at the valve tip to withstand erosion, allowing the guide vanes to replace the valve tip in bearing the erosion. To mitigate the erosion caused by high-speed fluids, the frequency of valve tip replacement is reduced. Furthermore, the replacement cost of the guide vane after erosion is significantly lower than that of the valve tip, thus reducing equipment maintenance costs. When the flow rate is low, the guide vane can be omitted, reducing friction. The inlet flow channel gradually transitions from a circular tube to a fan shape, connecting seamlessly with the lower valve cavity flow channel to prevent eddy currents at the connection point due to uneven flow, thereby reducing erosion of the equipment. Within the diversion channel, the traditional method of changing the flow channel for butterfly or needle valves is replaced with a large contact surface that mates with the sloping curved sidewalls inside the valve cavity. This structure ensures smooth flow, adapts to the diversion of high-speed, high-pressure fluids, significantly reduces lateral bearing torque, and minimizes the erosion of the valve by high-speed fluids. Furthermore, the design incorporates a structure where the valve tip engages with the sidewall before the bottom, preventing sand blockage and ensuring proper closure. The principle is as follows: if the bottom of the valve engages with the sidewall before the tip, the fracturing fluid carrying sand that hasn't yet flowed out will gradually accumulate in the space between the valve sidewall and the valve cavity sidewall due to inertia. High-pressure, high-speed sand will become stuck at the bottom of the valve, preventing closure. However, if the valve tip engages with the sidewall before the bottom, the fluid supply to that side channel can be quickly cut off, closing the channel. Simultaneously, any sand that hasn't yet flowed out can be expelled by inertia. Even if some sand remains in the channel, the sand at the top of the channel will be eliminated. The supply of sand has been cut off, and the diversion valve is no longer continuously supplied, yet its closure remains effective. Furthermore, the specially designed structure with different contact sequences prevents the entire valve's sidewall and the valve cavity's sloping curved surface from completely fitting together, creating a huge negative pressure that makes the valve difficult to rotate again, resulting in negative pressure self-locking. Therefore, this structure has the advantage of avoiding negative pressure self-locking. Additionally, the structure of this invention ensures that the reliability of the diversion is maintained even when the valve's sidewall is partially eroded and worn. This is because the sidewall of this structure is a curved surface; when any part of the curved surface can close, the diversion valve effectively closes the fluid in that path. Therefore, even if part of the structure is worn due to erosion, it does not affect the overall sealing performance.

[0058] See Figures 13 to 15To achieve the above objectives, a second aspect of the present invention also provides a synchronous fracturing system, wherein the synchronous fracturing system includes a sand-fluid mixing device 300, a pump truck device 400, a monitoring and control device, and a synchronous fracturing high-pressure diversion device 700 as described above. The sand-fluid mixing device 300 is used to mix fracturing fluid and fracturing sand and guide the mixed sand-fluid to multiple pump truck units 401 arranged in parallel in the pump truck device 400 through a first pipeline 500. The multiple pump truck units 401 pump the mixed sand-fluid to different fracturing wells 800 through a second pipeline 600. The synchronous fracturing high-pressure diversion device 700 is disposed on the first pipeline 500 and / or the second pipeline 600 of the pump truck device 400. The monitoring and control device is communicatively connected to the drive component of the synchronous fracturing high-pressure diversion device 700 and is used to control the drive component to drive the valve core assembly 201 to rotate. Since the synchronous fracturing system adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0059] Specifically, such as Figure 13 and Figure 14 As shown, when the synchronous fracturing high-pressure diversion device 700 is installed on the second pipeline 600 of the pump truck unit 400, the synchronous fracturing high-pressure diversion device 700 can divert the fracturing sand fluid after the pump truck unit 400. The inlet valve section 110 of the synchronous fracturing high-pressure diversion device 700 can connect to all pump truck units 401 of the pump truck unit 400 (see...). Figure 13 It can also connect to some pump truck units 401 of the pump truck unit 400, while the remaining pump truck units 401 can be connected through the inlet valve section 110 of the remaining synchronous fracturing high-pressure diversion device 700 (see...). Figure 14 Furthermore, the outlet valve section 130 of the synchronous fracturing high pressure diversion device 700 can be connected to two different fracturing wells 800. When the number of synchronous fracturing high pressure diversion devices 700 in a synchronous fracturing system reaches two or more, the number of fracturing wells 800 performing synchronous fracturing can reach three or more.

[0060] Furthermore, such as Figure 15As shown, when the synchronous fracturing high-pressure diversion device 700 is installed on the first pipeline 500 of the pump truck device 400, the synchronous fracturing high-pressure diversion device 700 can divert fracturing sand and fluid before the pump truck device 400 and after the sand-fluid mixing device 300. The number of synchronous fracturing high-pressure diversion devices 700 can be set to half the number of pump truck units 401 in the pump truck device 400, so that the inlet valve section 110 of all synchronous fracturing high-pressure diversion devices 700 are connected to the sand-fluid mixing device 300 respectively. The two outlet valve channels of each synchronous fracturing high-pressure diversion device 700 can be connected to different pump truck units 401 one by one. The multiple pump truck units 401 of the pump truck device 400 can be connected to one of the different fracturing wells 800 respectively. The number of fracturing wells 800 is not limited to two, and more than two are also possible. It should be noted that placing the synchronous fracturing high-pressure diversion device 700 on the first pipeline 500 of the pump truck device 400 is particularly suitable for scenarios where the fluid pressure is huge and exceeds the allowable pressure of the diversion device. The synchronous fracturing high-pressure diversion device 700 is located at the low-pressure end (inlet) of the pump truck device 400. By controlling the fluid inlet flow rate at the low-pressure end of the pump truck device 400 through each synchronous fracturing high-pressure diversion device 700, the flow rate control at the high-pressure end is realized. Ultimately, real-time control of the flow rate / discharge of different fracturing wells 800 is achieved during synchronous fracturing. Furthermore, since the synchronous fracturing high-pressure diversion device 700 is located at the low-pressure end, it does not have to withstand high pressure and high-speed flow, thus improving the safety factor.

[0061] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A synchronous fracturing high-pressure diversion device, characterized in that, The synchronous fracturing high-pressure diversion device includes: The flow divider housing (100) includes an inlet valve pipe section (110), a valve cavity section (120), and an outlet valve pipe section (130) connected in sequence. The inlet valve pipe section (110) forms an inlet valve channel (111), and the outlet valve pipe section (130) forms a first outlet valve channel (131) and a second outlet valve channel (132) spaced apart. The valve cavity section (120) forms a valve core drive cavity (121), and the first end of the valve core drive cavity (121) is connected to the inlet valve channel (111), and the second end is connected to the first outlet valve channel (131) and the second outlet valve channel (132) respectively. The valve core drive mechanism (200) includes a valve core assembly (201) and a drive member. The valve core assembly (201) is rotatably disposed in the valve core drive cavity (121) and forms a first valve core channel (202) and a second valve core channel (203) spaced apart. The first valve core channel (202) and the second valve core channel (203) both extend along the length direction of the valve core drive cavity (121). The first valve core channel (202) is used to connect the inlet valve channel (111) and the first outlet valve channel (131) to form a first flow divider. The second valve core channel (203) is used to connect the inlet valve channel (111) and the second outlet valve channel (132) to form a second flow divider. The drive member is used to drive the valve core assembly (201) to rotate so as to adjust the flow rate of the first flow divider and the second flow divider. The valve core assembly (201) includes a valve core body (204), a first stop body (205), and a second stop body (206). The first stop body (205) and the second stop body (206) are respectively disposed on the inner wall of the valve core drive cavity (121) with respect to the valve inlet channel (111), and both extend along the length direction of the valve core drive cavity (121). The valve core body (204) includes a rotating core part (207) that is driven and connected to the drive member, and a spacer plate part (208) disposed on the periphery of the rotating core part (207). The rotating core part (207) is rotatable. The rotating core (207) is dynamically disposed in the inner ring formed by the first stop (205) and the second stop (206), and the periphery of the rotating core (207) is respectively attached to and abuts against the first stop (205) and the second stop (206) to form a valve core flow space. The partition plate (208) extends between the first stop (205) and the second stop (206) and is attached to and abuts against the inner wall of the valve core drive cavity (121) to divide the valve core flow space to form the first valve core channel (202) and the second valve core channel (203). The valve core flow space and the spacer plate (208) are both arranged in a fan-shaped annular cross section along the direction from the valve inlet section (110) toward the valve outlet section (130), and the cross-sectional area is arranged in an increasing manner; a replaceable guide valve is installed in the valve inlet channel (111).

2. The synchronous fracturing high-pressure diversion device according to claim 1, characterized in that, At least one of the first stop body (205) and the second stop body (206) is provided with a T-shaped tenon-and-mortise sliding connection with the inner wall of the valve core drive cavity (121) so that the corresponding stop body can be axially pushed into or pulled out of the valve core drive cavity (121).

3. The synchronous fracturing high-pressure diversion device according to claim 1, characterized in that, Both the first stop body (205) and the second stop body (206) include a fixing part (211) provided on the inner wall of the valve core drive cavity (121) and an abutment part (212) detachably provided on the side of the fixing part (211) facing the spacer part (208).

4. The synchronous fracturing high-pressure diversion device according to claim 1, characterized in that, The valve inlet pipe section (110) includes a valve inlet end cap (112) detachably connected to the valve cavity section (120), and a valve inlet pipe body (113) disposed on the side of the valve inlet end cap (112) facing away from the valve cavity section (120). The valve inlet channel (111) extends from the valve inlet pipe body (113) through the valve inlet end cap (112) and is gradually widened. The opening shape of the valve inlet channel (111) is along the valve inlet pipe body (113). The direction towards the valve end cover (112) transitions from a circle to a fan-shaped ring. The first stop body (205) and the second stop body (206) are respectively arranged on opposite sides of the valve inlet channel (111) along the circumferential direction, and their ends are fitted to the inner side of the valve end cover (112). The first stop body (205) and the second stop body (206) also have the solid part of the valve end cover (112) between them and the inner wall of the valve inlet channel (111).

5. The synchronous fracturing high-pressure diversion device according to claim 4, characterized in that, The valve cavity section (120) and the valve outlet pipe section (130) are integrally formed. The first valve outlet channel (131) and the second valve outlet channel (132) both extend from the valve outlet pipe section (130) through the end of the valve cavity section (120) and are respectively connected to the valve core drive cavity (121). Both the first valve outlet channel (131) and the second valve outlet channel (132) are tapered in the direction from the valve cavity section (120) towards the valve outlet pipe section (130). Furthermore, the shape of the channel openings transitions from a fan-shaped ring to a circle. The inner cavity of the valve chamber section (120) has a first step portion (123) and a second step portion (124) formed between the two valve outlet channels and the valve core drive cavity (121) for correspondingly fitting with the ends of the first stop body (205) and the second stop body (206). The first stop body (205) and the second stop body (206) also have solid portions of the step portion between them and the peripheral walls of the corresponding valve outlet channels.

6. The synchronous fracturing high-pressure diversion device according to claim 1, characterized in that, The spacer plate portion (208) has a first side surface facing the first stop body (205) for abutting against the first stop body (205), and a second side surface facing the second stop body (206) for abutting against the second stop body (206). When the first side surface and the second side surface abut against the corresponding stop body, the front part near the inlet valve pipe section (110) contacts the rear part near the outlet valve pipe section (130) before the front part near the outlet valve pipe section (130).

7. A simultaneous fracturing system, characterized in that, The synchronous fracturing system includes a sand-fluid mixing device (300), a pump truck device (400), and a synchronous fracturing high-pressure diversion device (700) according to any one of claims 1 to 6. The sand-fluid mixing device (300) is used to mix fracturing fluid and fracturing sand and guide the mixed sand-fluid to a plurality of pump truck units (401) arranged in parallel in the pump truck device (400) through a first pipeline (500). The plurality of pump truck units (401) pump the mixed sand-fluid to different fracturing wells (800) through a second pipeline (600). The synchronous fracturing high-pressure diversion device (700) is provided on the first pipeline (500) and / or the second pipeline (600) of the pump truck device (400).

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