Synchronous fracturing high-pressure diversion device and synchronous fracturing system

Abstract

This invention discloses a synchronous fracturing high-pressure diversion device and a synchronous fracturing system. The synchronous fracturing high-pressure diversion device includes a diversion shell and a valve core drive mechanism. The inlet valve diversion pipe of the diversion shell includes a confluence channel and at least two inlet valve diversion channels formed by branching from the confluence channel. The at least two inlet valve diversion channels are respectively connected to the inner cavity of the valve cavity on the front side of the valve cavity. The at least two outlet valve diversion channels of the outlet valve diversion pipe are respectively connected to at least two fracturing wells and the inner cavity of the valve cavity on the rear side of the valve cavity. The first drive member of the valve core drive mechanism is connected to the first valve core body located in the valve cavity and drives the first valve core body to perform a pulling motion to adjust the opening between the corresponding inlet valve diversion channels and outlet valve diversion channels. Thus, the synchronous fracturing high-pressure diversion device can distribute the fracturing fluid flow to multiple wells, thereby achieving the purpose of reducing fracturing costs and reducing the difficulty of adjusting the fracturing discharge.

Description

Technical Field

[0001] This invention belongs to the field of oil and gas field development technology, specifically relating to a synchronous fracturing high-pressure diversion device and synchronous fracturing 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 laying manifolds on the surface, each well needs its own fracturing system, with multiple fracturing trucks connected to a single well via high-pressure 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] To address the aforementioned deficiencies or shortcomings, this invention provides a synchronous fracturing high-pressure diversion device and a synchronous fracturing system, aiming to solve the technical problems of existing multi-well synchronous fracturing requiring separate fracturing systems for each well and the difficulty in adjusting fracturing flow rate.

[0005] To achieve the above objectives, 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 drive mechanism; the diversion shell includes an inlet valve diversion pipe, a valve cavity, and an outlet valve diversion pipe, the inner flow channel of the inlet valve diversion pipe includes a confluence flow channel and at least two inlet valve diversion flow channels formed by branching from the rear end of the confluence flow channel, the front end of the confluence flow channel is used to connect with an upstream high-pressure manifold, and the at least two inlet valve diversion flow channels are respectively connected to the inner cavity of the valve cavity on the front side of the valve cavity. The valve outlet diversion pipe has at least two valve outlet diversion channels, which correspond one-to-one with at least two fracturing wells and connect them to the inner cavity of the valve cavity. The valve core drive mechanism includes a first drive member disposed on the valve cavity and a first valve core body that is retractably disposed in the inner cavity of the valve cavity. The first drive member is drivenly connected to the first valve core body and is used to drive the first valve core body to perform a retraction movement to adjust the opening between the corresponding inlet valve diversion channel and the outlet valve diversion channel.

[0006] In this embodiment of the invention, the first valve core body is provided with a plurality of valve core channel groups spaced apart along the pull-out direction. Each valve core channel group has at least one valve core through channel that connects to the corresponding inlet valve diversion channel and outlet valve diversion channel. The opening positions of the valve core through channels in the plurality of valve core channel groups are set to be different.

[0007] In this embodiment of the invention, the inlet of the valve core through-hole is set as an oblong hole, the outlet diameter of the valve inlet diversion channel is set to be the same as the opening width of the oblong hole, the outlet of the valve core through-hole and the inlet of the valve outlet diversion channel are set as round holes with the same diameter, the cross-sectional area of ​​the valve core through-hole is set to gradually decrease from the inlet to the outlet, and the inner wall surface of the valve core through-hole is set as a curved arc surface.

[0008] In this embodiment of the invention, the number of valve core driving mechanisms is at least two, and the first valve core body of the at least two valve core driving mechanisms is disposed between the corresponding inlet valve diversion channel and outlet valve diversion channel.

[0009] In an embodiment of the present invention, a valve core through-hole is provided on the first valve core body of at least two valve core driving mechanisms. The valve core through-hole is used to connect the corresponding inlet valve diversion channel and outlet valve diversion channel respectively.

[0010] In this embodiment of the invention, there are at least two valve cavities, and at least two valve core driving mechanisms are configured one-to-one with at least two valve cavities. The inner cavity of each of the at least two valve cavities includes a valve cavity flow channel and a first pull-out space arranged sequentially along the pull-out direction of the first valve core. The inlets of the valve cavity flow channels of the at least two valve cavities are respectively configured to communicate one-to-one with at least two inlet valve diversion channels, and the outlets of the valve cavity flow channels of the at least two valve cavities are respectively configured to communicate one-to-one with at least two outlet valve diversion channels. The first driving members of the at least two valve core driving mechanisms are respectively used to drive the first valve core to pull out from the valve cavity flow channel toward the first pull-out space in a one-to-one correspondence.

[0011] In an embodiment of the present invention, the first valve core includes a gate portion and a guide portion arranged sequentially along the pulling direction. The guide portion is laterally attached to and pullable within the first pulling space. A first driving member is driven to connect to one end of the guide portion away from the gate portion, so that the gate portion can move toward the bottom wall of the valve cavity flow channel.

[0012] In this embodiment of the invention, a gate slope is formed on the side of the gate portion facing the valve diversion channel, and the gate slope is inclined from front to back in the direction along the guide portion toward the bottom wall of the valve cavity channel.

[0013] And / or, the bottom wall of the valve cavity flow channel is recessed to form a stop-fitting surface, which is used to laterally fit with the side of the gate portion facing the inlet valve diversion flow channel.

[0014] In this embodiment of the invention, the inner cavities of at least two valve chambers each include a second pull-out space. The second pull-out space is located on the side of the valve chamber flow channel away from the first pull-out space. The valve core driving mechanism also includes a second driving member and a second valve core body. The first valve core body extends into the valve chamber flow channel from the first pull-out space, and the second valve core body extends into the valve chamber flow channel from the second pull-out space. The ends of the first valve core body and the second valve core body facing each other are used for sealing and fitting. The first driving member and the second driving member are respectively driven and connected to the first valve core body and the second valve core body in a one-to-one correspondence, so as to drive the first valve core body and the second valve core body to move towards each other or away from each other.

[0015] In this embodiment of the invention, at one end of the first valve core body facing the second valve core body, at least two protrusions are formed at intervals along the direction from the inlet valve diversion channel to the outlet valve diversion channel. At one end of the second valve core body facing the first valve core body, at least two recesses are formed at intervals along the direction from the inlet valve diversion channel to the outlet valve diversion channel. The at least two protrusions extend into the at least two recesses one by one and are laterally fitted.

[0016] To achieve the above objectives, the present invention also provides a synchronous fracturing system, wherein the synchronous fracturing system includes a synchronous fracturing high-pressure diversion device as described above.

[0017] 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:

[0018] When using the aforementioned synchronous fracturing high-pressure diversion device, since it includes a diversion shell and a valve core drive mechanism, the inlet valve diversion pipe of the diversion shell is located on the front side of the valve cavity, and the front end of the inlet valve diversion pipe can be connected to the upstream high-pressure manifold through a connecting channel, and the rear end is connected to the inner cavity of the valve cavity through at least two inlet valve diversion channels formed by branching from the connecting channel. The outlet valve diversion pipe of the diversion shell is located on the rear side of the valve cavity and has at least two outlet valve diversion channels, which respectively connect the inner cavity of the valve cavity to at least two fracturing wells. The first driving component of the core drive mechanism can drive the first valve core body to perform a pulling motion within the valve cavity to adjust the opening between the corresponding inlet valve diversion channel and outlet valve diversion channel. Thus, the high-pressure manifold of a fracturing system can distribute the fracturing fluid flow to multiple wells through the synchronous fracturing high-pressure diversion device, eliminating the need for separate fracturing system arrangements for each well when performing synchronous fracturing of multiple wells. In addition, the valve core drive mechanism facilitates the adjustment of fracturing discharge rate, thereby reducing fracturing costs and the difficulty of adjusting fracturing discharge rate.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the assembly structure of the synchronous fracturing high-pressure diversion device according to the first embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the disassembled structure of the synchronous fracturing high-pressure diversion device according to the first embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the downward-facing flow channel structure of the synchronous fracturing high-pressure diversion device according to the first embodiment of the present invention;

[0024] Figure 4 This is a schematic cross-sectional view of the synchronous fracturing high-pressure diversion device in one direction according to the first embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the first valve core body according to the first embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of an arrangement of the opening points of the valve core channel group according to the present invention.

[0027] Figure 7 This is a schematic diagram of another arrangement of the opening points of the valve core channel group according to the present invention;

[0028] Figure 8 This is a schematic diagram of the square hole to round hole of the valve core through-hole according to the present invention.

[0029] Figure 9 This is a schematic diagram of the assembly structure of the synchronous fracturing high-pressure diversion device according to the second embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the disassembled structure of the synchronous fracturing high-pressure diversion device according to the second embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of the downward-facing flow channel structure of the synchronous fracturing high-pressure diversion device according to the second embodiment of the present invention;

[0032] Figure 12 This is a cross-sectional structural diagram of the synchronous fracturing high-pressure diversion device in one direction according to the second embodiment of the present invention;

[0033] Figure 13 This is a schematic diagram of the assembly structure of the synchronous fracturing high-pressure diversion device according to the third embodiment of the present invention;

[0034] Figure 14 This is a schematic diagram of the disassembled structure of the synchronous fracturing high-pressure diversion device according to the third embodiment of the present invention;

[0035] Figure 15 This is a schematic diagram of the downward-facing flow channel structure of the synchronous fracturing high-pressure diversion device according to the third embodiment of the present invention;

[0036] Figure 16 This is a cross-sectional structural diagram of the synchronous fracturing high-pressure diversion device in one direction according to the third embodiment of the present invention;

[0037] Figure 17 This is a schematic diagram of the structure of the first valve core body according to the third embodiment of the present invention;

[0038] Figure 18 This is a schematic diagram of the assembly structure of the synchronous fracturing high-pressure diversion device according to the fourth embodiment of the present invention;

[0039] Figure 19 This is a schematic diagram of the disassembled structure of the synchronous fracturing high-pressure diversion device according to the fourth embodiment of the present invention;

[0040] Figure 20 This is a schematic diagram of the downward-facing flow channel structure of the synchronous fracturing high-pressure diversion device according to the fourth embodiment of the present invention;

[0041] Figure 21 This is a schematic cross-sectional view of the high-pressure diversion device for synchronous fracturing according to the fourth embodiment of the present invention;

[0042] Figure 22 This is a partial structural diagram of the first valve core and the second valve core according to the fourth embodiment of the present invention;

[0043] Figure 23 This is a schematic diagram of a synchronous fracturing system according to an embodiment of the present invention.

[0044] Explanation of reference numerals in the embodiments of the present invention

[0045] Detailed Implementation

[0046] 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.

[0047] The synchronous fracturing high-pressure diversion device and synchronous fracturing system of the present invention are described below with reference to the accompanying drawings.

[0048] like Figures 1 to 3 , Figures 9 to 11 , Figures 13 to 15 as well as Figures 18 to 20 As shown, the present invention provides a synchronous fracturing high-pressure diversion device, wherein the synchronous fracturing high-pressure diversion device includes:

[0049] The diversion housing 100 includes an inlet valve diversion pipe 110, a valve cavity 120, and an outlet valve diversion pipe 130. The inner flow channel of the inlet valve diversion pipe 110 includes a confluence flow channel 111 and at least two inlet valve diversion flow channels 112 formed by branching from the rear end of the confluence flow channel 111. The front end of the confluence flow channel 111 is used to connect with the upstream high-pressure manifold. The at least two inlet valve diversion flow channels 112 are respectively connected to the inner cavity of the valve cavity 120 on the front side. The outlet valve diversion pipe 130 has at least two outlet valve diversion flow channels 131. The at least two outlet valve diversion flow channels 131 are respectively connected to the inner cavity of the valve cavity 120 on the rear side of the valve cavity 120.

[0050] The valve core drive mechanism 200 includes a first drive member 210 disposed on the valve cavity 120 and a first valve core body 220 disposed in the inner cavity of the valve cavity 120. The first drive member 210 is drivenly connected to the first valve core body 220 and is used to drive the first valve core body 220 to perform a pulling motion to adjust the opening degree between the correspondingly disposed inlet valve diversion channel 112 and outlet valve diversion channel 131.

[0051] When using the aforementioned synchronous fracturing high-pressure diversion device, since it includes a diversion housing 100 and a valve core drive mechanism 200, the inlet valve diversion pipe 110 of the diversion housing 100 is located on the front side of the valve cavity 120, and the front end of the inlet valve diversion pipe 110 can be connected to the upstream high-pressure manifold through the manifold 111, and the rear end is connected to the inner cavity of the valve cavity 120 through at least two inlet valve diversion channels 112 formed by branching from the manifold 111. The outlet valve diversion pipe 130 of the diversion housing 100 is located on the rear side of the valve cavity 120 and has at least two outlet valve diversion channels 131, which respectively connect the inner cavity of the valve cavity 120 to the valve cavity 120. At least two fracturing wells are connected. The first driving component 210 of the valve core drive mechanism 200 can drive the first valve core body 220 to perform a pulling motion in the inner cavity of the valve cavity 120 to adjust the opening between the corresponding inlet valve diversion channel 112 and outlet valve diversion channel 131. Then, the high-pressure manifold of a fracturing system can distribute the fracturing fluid flow to multiple wells through the synchronous fracturing high-pressure diversion device, so that when performing synchronous fracturing of multiple wells, it is not necessary to arrange the fracturing system separately for each well. In addition, the setting of the valve core drive mechanism 200 also facilitates the adjustment of the fracturing discharge rate, thereby achieving the purpose of reducing fracturing costs and reducing the difficulty of adjusting the fracturing discharge rate.

[0052] It should be noted that the number of inlet valve diversion channels 112 and outlet valve diversion channels 131 of the synchronous fracturing high-pressure diversion device can be consistent with the number of fracturing wells that need to be synchronously fracturing. At least two inlet valve diversion channels 112 are respectively set to correspond one-to-one with at least two outlet valve diversion channels 131, and they are all connected through the first valve core 220 in the valve cavity to divert the fracturing fluid in the confluence channel 111 to at least two fracturing wells. Specifically, there can be two inlet valve diversion channels 112, outlet valve diversion channels 131, and fracturing wells. One inlet valve diversion channel 112 and one outlet valve diversion channel 131 can be connected through the first valve core 220 to form the first fracturing fluid diversion channel. The other inlet valve diversion channel 112 and the other outlet valve diversion channel 131 can also be connected through the first valve core 220 to form the second fracturing fluid diversion channel. In addition, under the driving pull of the first driving member 210, the pull position of the first valve core 220 in the valve cavity 120 changes, thereby adjusting the opening degree of the two fracturing fluid diversion channels.

[0053] like Figures 1 to 5 As shown, in the first embodiment of the present invention, the first valve core body 220 is provided with a plurality of valve core channel groups 221 spaced apart along the pulling direction. Each valve core channel group 221 has at least one valve core through channel 222 connecting the corresponding inlet valve diversion channel 112 and outlet valve diversion channel 131, and the opening positions of the valve core through channels 222 in the plurality of valve core channel groups 221 are set to be different. That is, the opening positions of the valve core channel groups 221 corresponding to the first valve core body 220 at different pulling positions are different. For example, the number of inlet valve diversion channels 112, outlet valve diversion channels 131 and fracturing wells can be three. Then, at one pulling position, three fully open fracturing fluid diversion channels can be formed by openings. At other pulling positions, two fully open and one fully closed fracturing fluid diversion channels, or one fully open and two fully closed fracturing fluid diversion channels, can also be formed by openings. Specifically, the openings of the first valve core body 220 can be arranged in seven rows and three columns. In one row, three points each have valve core through-holes 222. The other three rows have a combination of two openings and one closed opening. The remaining three rows have a combination of one opening and two closed openings. Of course, there can also be a pull-out position on the first valve core body 220 without an opening, corresponding to a fully closed configuration of the three fracturing fluid diversion channels. By creating multiple valve core channel groups 221 on the first valve core body 220, only one valve core body can be placed inside the valve cavity 120, and the opening degree of multiple fracturing fluid diversion channels can be adjusted.

[0054] More specifically, such as Figure 6 and Figure 7As shown, when adjusting the opening degree, the first valve core 220 can also be adjusted so that the opening points of the two valve core channel groups 221 are partially corresponding to the same fracturing fluid diversion channel, so as to provide more opening degree adjustment ratios. Figure 6 As shown, the opening points of the valve core channel group 221 of the first valve core body 220 are arranged in seven rows and three columns. Figure 6 In (a), the valve core channel group 221 of the first row on the first valve core body 220 can be pulled out to be fully open and connected with the outlet of the inlet valve diversion channel 112 and the inlet of the outlet valve diversion channel 131, so as to achieve a 1:1:1 opening adjustment ratio; such as Figure 6 As shown in (b), the lower half of the first row of valve core channel group 221 and the upper half of the second row of valve core channel group 221 on the first valve core body 220 can be pulled out to connect with the outlet of the inlet valve diversion channel 112 and the inlet of the outlet valve diversion channel 131 to achieve an opening ratio of 1:2:2. Following this rule, the opening ratio can be further expanded; for example... Figure 6 As shown in (c), the un-perforated position on the first valve core 220 can be pulled between the outlet of the inlet valve diversion channel 112 and the inlet of the outlet valve diversion channel 131 to achieve a 0:0:0 opening ratio. Figure 7 (a) to Figure 7 As shown in (i), the opening points of the valve core channel group 221 of the first valve core body 220 are arranged in three rows and two columns, and there is a row of unopened positions below the opening points of the valve core channel group 221. The pull-out position of the valve core channel group 221 between the outlet of the inlet valve diversion channel 112 and the inlet of the outlet valve diversion channel 131 has at least the following positions: Figure 7 (a) to Figure 7 The nine types shown in (i) can be used to obtain at least nine opening adjustment ratios.

[0055] See Figure 2 as well as Figures 4 to 8In this embodiment of the invention, the inlet of the valve core through-hole 222 is set as an oblong hole, and the outlet diameter of the valve inlet diversion channel 112 is set to be the same as the opening width of the oblong hole. The outlet of the valve core through-hole 222 and the inlet of the valve outlet diversion channel 131 can be set as round holes with the same diameter, or the outlet diameter of the valve core through-hole 222 can be larger than the inlet diameter of the valve outlet diversion channel 131. The cross-sectional area of ​​the valve core through-hole 222 is gradually reduced from the inlet to the outlet, and the inner wall surface of the valve core through-hole 222 is set as a curved arc surface. The outlet of the inlet valve diversion channel 112 can be a round hole, while the inlet of the valve core through-channel 222 is a long, narrow, waist-shaped hole with the same opening width as the outlet diameter of the inlet valve diversion channel 112. When the first valve core body 220 slides longitudinally, the opening can be controlled to be fully open, half open, one-third open, or any proportion by the communication area between the outlet of the valve core through-channel 222 and the inlet of the outlet valve diversion channel 131, achieving precise control of the change in the diversion ratio of the sub-tube. Setting the inlet of the valve core through-channel 222 as a waist-shaped hole increases the longitudinal pulling range of the first valve core body 220, reduces the difficulty of proportional control, and makes the opening ratio control more precise. Specifically, the length of the waist-shaped hole is set along the pulling direction of the first valve core body 220, and a gradually narrowing valve core through-channel 222 is constructed through a curved arc surface to form a streamlined flow channel structure, reducing the frictional resistance along the path of the high-speed sand-carrying fracturing fluid.

[0056] Of course, the inlet of the valve core through-hole 222 is not necessarily an elongated, waist-shaped hole, such as... Figures 6 to 8 As shown, it is also possible to convert a square hole into a round hole.

[0057] In another embodiment of the present invention, the number of valve core drive mechanisms 200 can be at least two, and the first valve core bodies 220 of the at least two valve core drive mechanisms 200 are disposed between the corresponding inlet valve diversion channel 112 and outlet valve diversion channel 131. That is, the number of valve core drive mechanisms 200 can be consistent with the number of inlet valve diversion channels 112 or outlet valve diversion channels 131, and the pull-out position of the first valve core body 220 of each valve core drive mechanism 200 can be individually adjusted by the corresponding first drive member 210, thereby making it easier to adjust the opening degree of different fracturing fluid diversion channels.

[0058] like Figures 9 to 12As shown, in the second embodiment of the present invention, at least two valve core drive mechanisms 200 each have a valve core through-hole 222 on their first valve core bodies 220. The valve core through-hole 222 is used to connect to the corresponding inlet valve diversion channel 112 and outlet valve diversion channel 131, respectively. That is, when adjusting the opening of different fracturing fluid diversion channels individually, the first valve core body 220 can be driven to perform a pulling motion in the inner cavity of the valve cavity 120 by controlling the corresponding first drive member 210, so as to adjust the flow area of ​​the valve core through-hole 222 on the first valve core body 220 participating in the communication. It should be noted that in this embodiment, one valve core through-hole 222 is sufficient for one first valve core body 220.

[0059] Specifically, there can be two valve inlet diversion channels 112, two valve outlet diversion channels 131, and two fracturing wells. Correspondingly, there can also be two valve core drive mechanisms 200. The first valve core bodies 220 of the two valve core drive mechanisms 200 are fitted together in the same inner cavity of the valve cavity 120, and the pulling directions of the two valve core drive mechanisms 200 can be set in opposite directions. That is, the first drive members 210 of the two valve core drive mechanisms 200 are respectively located at both ends of the valve cavity 120 to achieve a compact layout design.

[0060] See Figures 14 to 16In another embodiment of the present invention, the number of valve cavities 120 can be at least two, and at least two valve core drive mechanisms 200 are arranged in a one-to-one correspondence with at least two valve cavities 120. The inner cavity of at least two valve cavities 120 includes a valve cavity flow channel 121 and a first pull-out space 122 arranged sequentially along the pull-out direction of the first valve core 220. The inlets of the valve cavity flow channels 121 of at least two valve cavities 120 are respectively connected to at least two inlet valve diversion channels 112, and the outlets of the valve cavity flow channels 121 of at least two valve cavities 120 are respectively connected to at least two outlet valve diversion channels 131. The first drive members 210 of the at least two valve core drive mechanisms 200 are respectively used to drive the first valve core 220 to pull out from the valve cavity flow channel toward the first pull-out space 122 in a one-to-one correspondence. That is, the inner cavity of the valve cavity 120 can also be used as the flow area adjustment area between the inlet valve diversion channel 112 and the outlet valve diversion channel 131. The first valve core 220 serves as the flow gate of the valve cavity channel 121. When it is necessary to increase the opening, the corresponding first driving member 210 drives the first valve core 220 to move from the valve cavity channel 121 toward the retracted first pull-out space 122. When it is necessary to decrease the opening, the corresponding first driving member 210 drives the first valve core 220 to move from the first pull-out space 122 toward the extended valve cavity channel 121. Meanwhile, different fracturing fluid diversion channels are provided with different valve cavities 120 to prevent fracturing fluid from flowing between them. Specifically, there can be two fracturing wells, and correspondingly, there can also be two valve cavities 120, inlet valve diversion channels 112, outlet valve diversion channels 131, and valve core drive mechanisms 200. One inlet valve diversion channel 112, one valve cavity 120, and one outlet valve diversion channel 131 can form a fracturing fluid diversion channel. The first valve core bodies 220 of the two valve core drive mechanisms 200 are respectively disposed in the inner cavities of the two valve cavities 120, and the pulling directions of the two valve core drive mechanisms 200 can be set in opposite directions, that is, the first drive members 210 of the two valve core drive mechanisms 200 are respectively disposed at both ends of the diversion housing 100.

[0061] like Figures 14 to 17 As shown, in the third embodiment of the present invention, the first valve core 220 includes a gate portion 223 and a guide portion 224 arranged sequentially along the pulling direction. The guide portion 224 is laterally attached and pull-outably disposed within the first pulling space 122. The first driving member 210 is drivenly connected to the end of the guide portion 224 away from the gate portion 223, so that the gate portion 223 can move towards or away from the bottom wall of the valve cavity flow channel 121. That is, only one valve core can be provided in the inner cavity of a valve cavity 120, and the flow opening can be adjusted by adjusting the distance between the gate portion 223 of the valve core and the bottom wall of the valve cavity flow channel 121.

[0062] In this embodiment of the invention, a gate slope 225 is formed on the side of the gate portion 223 facing the inlet valve diversion channel 112. The gate slope 225 is inclined from front to back along the direction of the guide portion 224 toward the bottom wall of the valve cavity channel 121. The gate slope 225 is provided on the gate portion 223 and faces the inlet valve diversion channel 112. Compared with a vertical surface, it can significantly reduce the erosion pressure of the high-speed sand-carrying fracturing fluid from the inlet valve diversion channel 112. Specifically, the side of the guide portion 224 facing the inlet valve diversion channel 112 is a columnar straight surface that fits against the first pull-out space 122 to ensure stable pull-out movement of the first valve core 220 within the valve cavity 120.

[0063] In addition, the bottom wall of the valve cavity flow channel 121 is recessed to form a stop-fitting surface. The stop-fitting surface is used to laterally fit with the side of the gate portion 223 facing the inlet valve diversion flow channel 112. By adding the stop-fitting surface, the gate portion 223 of the first valve core 220 and the wall structure of the valve cavity 120 can form a lateral fit and closure. Compared with bottom fit and closure, the closure and sealing are obviously more stable. Specifically, the bottom wall of the valve cavity flow channel 121 is recessed to form a sinking space 124. The sinking space 124 is provided with a stop-fitting surface on the side near the valve inlet diversion flow channel 112. The upper part of the stop-fitting surface is a sloped section that is laterally fitted with the gate slope 225 of the gate section 223, and the lower part is a straight section that is connected to the sloped section and extends vertically. The addition of the straight section ensures that there is still a gap on the lower side of the first valve core 220 after the first valve core 220 enters the sinking space 124 to close the diversion flow channel. The gap can accommodate sand particles carried in the fracturing fluid, thereby preventing sand particles from being pressed between the gate section 223 and the bottom wall of the valve cavity flow channel 121, thus reducing the wear of the gate section 223.

[0064] like Figures 18 to 21As shown, in the fourth embodiment of the present invention, the inner cavities of at least two valve bodies 120 further include a second pull-out space 125. The second pull-out space 125 is located on the side of the valve cavity flow channel 121 away from the first pull-out space 122. That is, the inner cavity of the valve body 120 is sequentially arranged with the first pull-out space 122, the valve cavity flow channel 121, and the second pull-out space 125 along the pull-out direction of the valve core. Furthermore, a valve inlet diversion channel 112 is provided on the front side of the valve cavity flow channel 121 along the flow direction of the fracturing fluid, and a valve outlet diversion channel 131 is provided on the rear side. The pull-out direction of the valve core intersects with the flow direction of the fracturing fluid. The core drive mechanism 200 also includes a second drive member 230 and a second valve core 240. The first valve core 220 extends from the first pull-out space 122 into the valve cavity flow channel 121, and the second valve core 240 extends from the second pull-out space 125 into the valve cavity flow channel 121. The opposite ends of the first valve core 220 and the second valve core 240 are used for sealing and fitting. The first drive member 210 and the second drive member 230 are respectively driven and connected to the first valve core 220 and the second valve core 240 in a one-to-one correspondence, driving the first valve core 220 and the second valve core 240 to move closer together or further apart. In this embodiment, two valve cores can be provided in the inner cavity of a valve cavity 120, and the flow opening can be adjusted by adjusting the distance between the two valve cores. Both valve cores are driven by drive members, thereby improving adjustment efficiency. Specifically, when a larger opening is required, the corresponding first driving member 210 and second driving member 230 drive the first valve core 220 and the second valve core 240 to move away from each other within the valve core's inner cavity. That is, the first valve core 220 moves from the valve cavity flow channel 121 toward the retracted first pull-out space 122, and the second valve core 240 moves from the valve cavity flow channel 121 toward the retracted second pull-out space 125. When a smaller opening is required, the corresponding... The first driving member 210 and the second driving member 230 drive the first valve core 220 and the second valve core 240 to move towards each other in the inner cavity of the valve core, that is, the first valve core 220 moves from the first pull-out space 122 toward the direction extending into the valve cavity flow channel 121, and the second valve core 240 moves from the second pull-out space 125 toward the direction extending into the valve cavity flow channel 121, so that the first valve core 220 and the second valve core 240 directly fit together to completely close the diversion flow channel.

[0065] See Figure 21 and Figure 22In this embodiment of the invention, at least two bosses 226 are sequentially spaced protruding from one end of the first valve core 220 facing the second valve core 240, and at least two recesses 241 are sequentially spaced recessed from the other end of the second valve core 240 facing the first valve core 220. The at least two bosses 226 extend into the at least two recesses 241 and are laterally fitted together. This lateral fitting of the first valve core 220 and the second valve core 240 results in a significantly more stable closure and seal. Furthermore, one boss 226 and one recess 241 can form a lateral fitting structure. In this embodiment, at least two lateral fitting structures are provided, enabling multi-stage closure. Even if one lateral fitting structure fails, the other lateral fitting structures can still achieve effective closure. Specifically, the protrusion height of the boss portion 226 can be less than the recess height of the groove portion 241. That is, after the boss portion 226 is fully inserted into the groove portion 241, there is still a gap between the boss portion 226 and the bottom wall of the groove portion 241. This gap can accommodate sand particles carried in the fracturing fluid, thereby preventing sand particles from being pressed between the boss portion 226 and the bottom wall of the groove portion 241, thus reducing wear. In addition, the lateral contact surfaces of the boss portion 226 and the groove portion 241 are designed as bevels to facilitate contact guidance.

[0066] In this embodiment of the invention, the inlet valve diversion pipe 110 is connected to the upstream high-pressure manifold via an inlet flange 140, and one or more replaceable guide vanes 160 are installed inside the inlet flange 140 to reduce turbulence and erosion of the inlet valve diversion pipe 110. Alternatively, the guide vanes 160 can be omitted to reduce hydraulic friction. At least two outlet valve diversion channels 131 of the outlet valve diversion pipe 130 are respectively connected to at least two fracturing wells one-to-one via at least two outlet flanges 150.

[0067] In this embodiment of the invention, at least one of the first driving member 210 and the second driving member 230 can be configured as a telescopic cylinder. The piston rod of the telescopic cylinder extends into the inner cavity of the valve cavity 120 and is driven to connect with the corresponding valve core, thereby realizing the pulling motion of the corresponding valve core.

[0068] To achieve the above objectives, the present invention also provides a synchronous fracturing system, wherein the synchronous fracturing system includes the synchronous fracturing high-pressure diversion device 06 as described above. Since the synchronous fracturing system adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0069] Specifically, such as Figure 23As shown, the synchronous fracturing system also includes a fluid receiving tank 01, a sand box 02, a sand mixing device 03, a pump truck device 04, and a high-pressure manifold device 05. The fluid receiving tank 01 and the sand box 02 respectively contain fracturing fluid and sand particles and are used to guide the sand mixing device 03. The sand mixing device 03 is used to mix the fracturing fluid and sand particles and guide them to multiple pump trucks of the pump truck device 04. The multiple pump trucks are connected to the inlet valve diversion pipe 110 of the synchronous fracturing high-pressure diversion device 06 through the high-pressure manifold device 05. The outlet valve diversion pipe 130 of the synchronous fracturing high-pressure diversion device 06 is connected to two or more fracturing wells. This allows for real-time diversion of the fracturing fluid flowing out of the pump truck device 04 and the diverted fracturing fluid to each fracturing well, realizing real-time on-demand distribution of the flow rate of each well. This enables synchronous fracturing or zipper fracturing of multiple wells, reducing fracturing time and fracturing costs.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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 includes an inlet valve flow divider pipe, a valve cavity, and an outlet valve flow divider pipe. The inner flow channel of the inlet valve flow divider pipe includes a confluence flow channel and at least two inlet valve flow divider channels branching off from the rear end of the confluence flow channel. The front end of the confluence flow channel is used to connect to an upstream high-pressure manifold. At least two inlet valve flow divider channels are respectively connected to the inner cavity of the valve cavity on the front side of the valve cavity. The outlet valve flow divider pipe has at least two outlet valve flow divider channels. At least two outlet valve flow divider channels are respectively connected to at least two fracturing wells and the inner cavity of the valve cavity on the rear side of the valve cavity. The valve core drive mechanism includes a first drive member disposed on the valve cavity and a first valve core body that is removably disposed in the inner cavity of the valve cavity. The first drive member is drivenly connected to the first valve core body and is used to drive the first valve core body to perform a retraction movement to adjust the opening degree between the correspondingly disposed inlet valve diversion channel and outlet valve diversion channel. The number of valve cavities is at least two, and at least two valve core drive mechanisms are provided in one-to-one correspondence with at least two valve cavities. The inner cavity of at least two valve cavities includes a valve cavity flow channel and a first pull-out space arranged sequentially along the pull-out direction of the first valve core. The inner cavities of at least two valve chambers each include a second pull-out space. The second pull-out space is located on the side of the valve chamber flow channel away from the first pull-out space. The valve core driving mechanism also includes a second driving member and a second valve core. The first valve core extends into the valve chamber flow channel from the first pull-out space, and the second valve core extends into the valve chamber flow channel from the second pull-out space. The ends of the first valve core and the second valve core facing each other are used for sealing and fitting. The end of the first valve core facing the second valve core has at least two protruding bosses that are spaced apart in sequence along the direction from the inlet valve diversion flow channel to the outlet valve diversion flow channel. The end of the second valve core facing the first valve core has at least two recessed grooves that are spaced apart in sequence along the direction from the inlet valve diversion flow channel to the outlet valve diversion flow channel. The at least two bosses extend into the at least two recesses one by one and are laterally fitted. The protrusion height of the boss portion is less than the recess height of the groove portion, and one or more replaceable guide vanes are installed inside the inlet flange of the inlet valve diverter pipe.

2. The synchronous fracturing high-pressure diversion device according to claim 1, characterized in that, The number of valve core driving mechanisms is at least two, and the first valve core body of the at least two valve core driving mechanisms is disposed between the corresponding inlet valve diversion channel and the outlet valve diversion channel.

3. The synchronous fracturing high-pressure diversion device according to claim 2, characterized in that, The inlets of the valve cavity flow channels of at least two valve cavities are respectively connected to the inlet valve diversion flow channels one-to-one, and the outlets of the valve cavity flow channels of at least two valve cavities are respectively connected to the outlet valve diversion flow channels one-to-one. The first driving members of the at least two valve core driving mechanisms are respectively used to drive the first valve core body to perform a pulling motion from the valve cavity flow channel toward the first pulling space in a one-to-one correspondence.

4. The synchronous fracturing high-pressure diversion device according to claim 3, characterized in that, The first driving member and the second driving member are respectively driven to the first valve core and the second valve core in a one-to-one correspondence, so as to drive the first valve core and the second valve core to move towards each other or away from each other.

5. A simultaneous fracturing system, characterized in that, The synchronous fracturing system includes a synchronous fracturing high-pressure diversion device according to any one of claims 1 to 4.

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