Integrated sledge

Abstract

The utility model discloses an integrated sledge, and relates to the field of oil and gas equipment. An integrated sledge comprises a bottom sledge, a plug valve, a ball throwing device, a first pressure relief device and a plurality of multi-way pieces. The multiple multi-way pieces are all arranged on the bottom skid and are sequentially arranged in the first direction; the plug valve is arranged on the bottom skid, is connected between the two adjacent multi-way pieces and is used for communicating or separating the two adjacent multi-way pieces; the first pressure relief device is connected with the multi-way piece located at one end and used for conducting pressure relief on the multi-way piece. The ball throwing device is connected with the multi-way piece located at the other end and used for throwing balls into the multi-way piece. The problem that the operation difficulty and workload are increased when the functional device is located at different positions can be solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of oil and gas equipment, and particularly relates to an integrated skid. BACKGROUND

[0002] During the fracturing operation of an oil field, due to the process and safety requirements of construction, the operation manifold device needs to have the functions of ball dropping, pumping, protection, fluid sealing and the like. The current well site layout is to install the manifolds with the corresponding functions at different positions of the well site, for example, the protection device is installed on the high-low pressure manifold skid, the pumping device is separately configured with a fracturing truck and a pipeline, and the manifold is generally installed on the equipment near the wellhead.

[0003] The distribution of the above-mentioned functional devices in different areas makes the staff need to go back and forth between the positions of the multiple skids during operation or maintenance, which increases the operation difficulty and workload of the staff. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiment of the application is to provide an integrated skid, which can solve the problems of increased operation difficulty and workload caused by the functional devices being located at different positions.

[0005] In order to solve the above technical problems, the application is implemented as follows:

[0006] The embodiment of the application provides an integrated skid, comprising a bottom skid, a plug valve, a ball dropping device, a first pressure relief device and a plurality of multi-pass elements.

[0007] The plurality of multi-pass elements are arranged on the bottom skid and are sequentially arranged along a first direction.

[0008] The plug valve is arranged on the bottom skid and is connected between two adjacent multi-pass elements, for connecting or isolating the two adjacent multi-pass elements.

[0009] The first pressure relief device is connected with the multi-pass element at one end, for relieving the pressure of the multi-pass element.

[0010] The ball dropping device is connected with the multi-pass element at the other end, for dropping balls into the multi-pass element.

[0011] In the embodiment of the application, the plug valve, the ball dropping device, the first pressure relief device, the plurality of multi-pass elements and the like are integrated on the same bottom skid, which not only can meet the corresponding functions, but also can reduce the difficulty and complexity of the staff during operation or maintenance, and the staff does not need to move back and forth, which improves the operation or maintenance efficiency and saves the workload. In addition, the integrated manner can also reduce the volume of the integrated skid to some extent, thereby reducing the occupied space of the integrated skid, making the arrangement of the integrated skid more flexible, and improving the applicability of the integrated skid. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 A first structural schematic diagram of an integrated skid disclosed by the embodiments of the present application;

[0013] Figure 2 A second structural schematic diagram of an integrated skid disclosed by the embodiments of the present application;

[0014] Figure 3 A first structural schematic diagram of a ball throwing device disclosed by the embodiments of the present application;

[0015] Figure 4 A second structural schematic diagram of a ball throwing device disclosed by the embodiments of the present application.

[0016] Explanation of reference signs:

[0017] 10 - bottom skid; 11 - base; 12 - support seat;

[0018] 20 - plug valve;

[0019] 30 - ball throwing device;

[0020] 40 - first pressure relief device; 41 - pressure relief pipeline; 42 - safety valve; 43 - pressure detection element;

[0021] 50 - second pressure relief device; 51 - first pressure relief valve; 52 - second pressure relief valve;

[0022] 60a - first multi-way piece; 60b - second multi-way piece; 60c - third multi-way piece; 61 - cavity; 62 - first port; 63 - second port; 64 - third port; 65 - fourth port; 66 - fifth port;

[0023] 70 - one-way valve;

[0024] 80 - grease injection device;

[0025] 90 - connection conversion device;

[0026] 100 - control device. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0028] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the front and rear associated objects are in an "or" relationship.

[0029] The embodiments of the present application will be described in detail below with reference to specific examples and their application scenarios.

[0030] Reference Figures 1 to 4 The disclosed integrated skid includes a bottom skid 10, a plug valve 20, a ball throwing device 30, a first pressure relief device 40 and a plurality of multi-pass pieces.

[0031] The plurality of multi-pass pieces are all arranged on the bottom skid 10 and are sequentially arranged along a first direction, wherein the first direction is parallel to the flow direction of the fracturing fluid. The embodiments of the present application bear and install the plurality of multi-pass pieces through the bottom skid 10 to ensure the installation stability of the plurality of multi-pass pieces. Alternatively, the plurality of multi-pass pieces can be sequentially connected, of course, other components can also be connected between the adjacent two multi-pass pieces, and the specific connection mode is not limited. In addition, the plurality of multi-pass pieces can be two, three, four, five, etc., of course, it can also be other quantities, which are not limited here.

[0032] The plug valve 20 is arranged on the bottom skid 10 and connected between the adjacent two multi-pass pieces, for connecting or isolating the adjacent two multi-pass pieces. Based on this, when the fracturing fluid does not need to be transported, the plug valve 20 can be closed to isolate the adjacent two multi-pass pieces, so as to prevent the fracturing fluid from flowing along the multi-pass pieces; when the fracturing fluid needs to be transported, the plug valve 20 can be opened to connect the adjacent two multi-pass pieces, so that the fracturing fluid can flow along the multi-pass pieces. Therefore, the plug valve 20 in the embodiments of the present application can realize the blocking effect of the fracturing fluid when closed, so as to prevent the fracturing fluid from flowing downstream.

[0033] Alternatively, the plug valve 20 can be a large-size plug valve, of course, it can also be other size plug valves 20, which are not limited here. It should be noted here that the large-size plug valve refers to the plug valve 20 with a nominal diameter greater than the standard size, for example, the nominal diameter DN of the large-size plug valve is greater than 50 mm, etc. In other embodiments, the large-size plug valve can also be replaced by a large-size gate valve.

[0034] The first pressure relief device 40 is connected with the multi-way piece at one end, and is used for relieving pressure of the multi-way piece. Based on the first pressure relief device 40, overpressure protection can be achieved to prevent damage or danger caused by excessive pressure of the fracturing fluid transmitted in the multi-way piece.

[0035] The ball throwing device 30 is connected with the multi-way piece at the other end, and is used for throwing balls into the multi-way piece. In the embodiment, the ball throwing device 30 is integrated, so that the temporary plugging ball can be placed at one time, the automatic ball throwing can be achieved in the construction process, the continuity of the operation is ensured, and the safety risk of the personnel is reduced.

[0036] In the embodiment, the plug valve 20, the ball throwing device 30, the first pressure relief device 40, the plurality of multi-way pieces and the like are integrated on the same base skid 10. The corresponding functions can be met, the difficulty and complexity in the operation or maintenance process of the personnel can be reduced, the personnel need not move back and forth, the operation or maintenance efficiency is improved, and the workload is saved. In addition, the integrated skid can be reduced in size to some extent, so that the occupied space of the integrated skid is reduced, the arrangement of the integrated skid is more flexible, and the applicability of the integrated skid is improved. In addition, the integrated skid is convenient for hoisting and transportation.

[0037] Reference Figure 1 and Figure 2 In some specific embodiments, the plurality of multi-way pieces can be three multi-way pieces, which are a first multi-way piece 60a, a second multi-way piece 60b and a third multi-way piece 60c, and the first multi-way piece 60a, the second multi-way piece 60b and the third multi-way piece 60c are sequentially arranged along the first direction. The first pressure relief device 40 is connected to the first multi-way piece 60a, the plug valve 20 is connected between the first multi-way piece 60a and the second multi-way piece 60b, and the ball throwing device 30 is connected to the third multi-way piece 60c.

[0038] Optionally, among the first multi-way piece 60a, the plug valve 20, the second multi-way piece 60b and the third multi-way piece 60c, two adjacent ones are detachably connected, so as to facilitate assembly, disassembly and maintenance.

[0039] Based on the above arrangement, a channel for transmitting the fracturing fluid is formed by the first multi-way piece 60a, the plug valve 20, the second multi-way piece 60b and the third multi-way piece 60c in sequence, so as to transmit the fracturing fluid to the downstream area.

[0040] Further, the integrated skid can further include a check valve 70 connected between the second multi-way piece 60b and the third multi-way piece 60c. By arranging the check valve 70, the fracturing fluid can be blocked to prevent reverse flow. Optionally, the check valve 70 can be a one-way valve or the like.

[0041] Specifically, when the output of the fracturing fluid is abnormal, the reverse throttling of the fracturing fluid can be realized through the quick response of the single-flow valve 70, thereby reserving more time for switching of the plug valve 20.

[0042] With reference back to Figure 1 and Figure 2 In some embodiments, the first pressure relief device 40 can include a pressure relief pipeline 41, a safety valve 42, and a pressure detection element 43. The pressure relief pipeline 41 is connected to the multi-way piece (i.e., the first multi-way piece 60a), the safety valve 42 is arranged in the pressure relief pipeline 41, and the pressure detection element 43 is arranged in the pressure relief pipeline 41. The safety valve 42 is used to open when the pressure detection element 43 detects that the pressure in the pressure relief pipeline 41 exceeds the preset pressure, so that the fracturing fluid in the multi-way piece is discharged through the pressure relief pipeline 41.

[0043] Optionally, the pressure detection element 43 and the safety valve 42 can be electrically connected, so that the safety valve 42 can receive the control signal of the pressure detection element 43, so as to control the safety valve 42 to open when overloaded.

[0044] Based on the above arrangement, when the working pressure exceeds the set pressure of the safety valve 42, the safety valve 42 can be opened, and the fracturing fluid can be discharged through the pressure relief pipeline 41 to avoid the occurrence of overloading.

[0045] Optionally, the pressure relief pipeline 41 can be a bifurcated tee, including three interfaces. The first interface is connected to the multi-way piece, the pressure detection element 43 can be arranged at the second interface, and the safety valve 42 can be arranged at the third interface.

[0046] For example, the pressure detection element 43 can mainly consist of a pressure sensor, a signal line, a connection structure, etc. During operation, the working pressure can be monitored at the center of the instrument. Once the set value is exceeded, the safety valve 42 is immediately controlled to open, so as to perform the corresponding load reduction and displacement reduction actions.

[0047] With reference back to Figure 1 and Figure 2 In some embodiments, the integrated skid can further include a second pressure relief device 50, which includes a first pressure relief valve 51 and a second pressure relief valve 52. The first pressure relief valve 51 is connected to the third multi-way piece 60c, and the second pressure relief valve 52 is connected in series with the first pressure relief valve 51. When it is necessary to relieve the pressure between the integrated skid and the wellhead, the second pressure relief device 50 is operated. Specifically, the first pressure relief valve 51 is first opened, and then the second pressure relief valve 52 is opened for pressure relief after the first pressure relief valve 51 is completely opened, so that the overloading caused by excessive working pressure can be effectively prevented.

[0048] By the series connection of the first pressure relief valve 51 and the second pressure relief valve 52, and by opening according to a preset program, the flushing of the pressure relief valves can be reduced, and the service life of the pressure relief valves can be prolonged.

[0049] Optionally, the first pressure relief valve 51 and the second pressure relief valve 52 can each be a pressure relief cock valve.

[0050] In some embodiments, the integrated skid can further include a grease injection device 80 arranged on the bottom skid 10 and connected with the cock valve 20, for injecting grease to the cock valve 20 to ensure smooth switching of the cock valve 20 and effectively prevent the cock valve 20 from being stuck.

[0051] In some embodiments, the integrated skid can further include a control device 100 electrically connected with the grease injection device 80, for controlling the grease injection. Optionally, under the control of the control device 100, automatic grease injection and quantitative grease injection can be realized, so as to reduce the manual participation and labor intensity.

[0052] Illustratively, the grease injection device 80 can include a grease injection pump and a grease injection pipeline, the grease injection pipeline being connected with the grease injection pump and the cock valve 20, and the control device 100 being connected with the grease injection pump, for controlling the working condition (such as the rotating speed) of the grease injection pump to realize the control of the grease injection flow, and thus quantitative grease injection can be realized. It should be noted that the specific structure and working principle of the grease injection pump with the quantitative function can refer to the prior art, and will not be described in detail here.

[0053] In other embodiments, the grease injection device 80 can further include a grease injection valve arranged on the grease injection pipeline, and the control device 100 is electrically connected with the grease injection valve, for controlling the opening of the grease injection valve, so as to control the grease injection flow to realize quantitative grease injection and reduce the labor intensity. Optionally, the grease injection valve can be a flow valve or the like.

[0054] In addition, the control device 100 can be electrically connected with the cock valve 20 and the ball throwing device 30 respectively, to control the switching state of the cock valve 20, so as to make the cock valve 20 communicate or cut off, and to control the ball throwing condition of the ball throwing device 30, so as to realize quantitative ball throwing. It should be noted that the control principle of the control device 100 on the cock valve 20 and the ball throwing device 30 can refer to the prior art, and will not be described in detail here.

[0055] Optionally, the control device 100 can include a hydraulic pump, a hydraulic oil tank, a solenoid valve, an industrial wifi, and other electric control elements, and through the control device 100, the cock valve 20, the ball throwing device 30, the grease injection device 80, and the second pressure relief device 50 can be controlled.

[0056] Of course, the control device 100 can also be used to be electrically connected with a remote control terminal in a wired or wireless manner, so that the control device 100 and the remote control terminal can transmit signals and realize remote control, thereby avoiding the staff from entering the high-voltage area and causing personal injury.

[0057] Optionally, the control device 100 can realize a local control mode, a separate remote control mode, a chained remote control, etc., which can be selected according to actual working conditions. It should be noted that the control principle can refer to the prior art, which is not limited here.

[0058] In the local control mode, the staff can operate on the control screen; in the remote control mode, the staff can separately operate the instruction on the operation terminal (such as a handheld pad, etc.), and the signal can be transmitted through various bus forms (such as modbus, profinet, canopen, etc.), and can also be transmitted through various wireless forms, such as wifi, lora, zigbee, etc.

[0059] In the chained remote control mode, the control device 100 can be programmed to be integrated with the fracturing equipment to realize the chained control of the fracturing equipment. The program can be set in advance according to the requirements of the operation process, so as to reduce the manual intervention to the greatest extent and realize the one-key control of the whole process of the fracturing operation.

[0060] In addition, the control device 100 can also integrate the Internet of Things technology, artificial intelligence AI technology, sensor technology, wired / wireless network technology, so as to realize the action of various valves (such as the plug valve 20, the first pressure relief valve 51, the second pressure relief valve 52, etc.), and can also obtain the temperature, pressure, liquid level, etc. of the fracturing fluid.

[0061] In some embodiments, the multi-way piece can be a five-way piece, which can include a cavity 61 and first, second, third, fourth and fifth ports 62, 63, 64, 65 and 66 respectively communicating with the cavity 61. The first and second ports 62 and 63 are oppositely arranged along a first direction, the third and fourth ports 64 and 65 are oppositely arranged along a second direction, and the fifth port 66 is arranged along a third direction, and the first, second and third directions are perpendicular to each other.

[0062] The first port 62 and the second port 63 can be main ports and mainly used for transmitting fracturing fluid. Specifically, one end of the plug valve 20 is connected with the second port 63 of the first five-way piece (i.e., the first multi-way piece 60a) of the two adjacent five-way pieces, and the other end of the plug valve 20 is connected with the first port 62 of the second five-way piece (i.e., the second multi-way piece 60b) of the two adjacent five-way pieces. In this way, when the plug valve 20 is opened, the fracturing fluid can enter the cavity 61 through the first port 62 of the first five-way piece, flow into the plug valve 20 through the second port 63, flow into the first port 62 of the second five-way piece through the plug valve 20, flow into the valve cavity through the first port 62, and then continue to flow downstream through the second port 63 of the second five-way piece, so as to realize the transmission of the fracturing fluid.

[0063] The first pressure relief device 40 is connected with the fifth port 66. Specifically, the first pressure relief device 40 is connected with the fifth port 66 of the first multi-way piece 60a, so as to realize pressure relief by discharging the fracturing fluid outside through the first pressure relief device 40 when the pressure in the first multi-way piece 60a exceeds the preset pressure.

[0064] The ball throwing device 30 is connected with the fifth port 66. Specifically, the ball throwing device 30 is connected with the fifth port 66 of the third multi-way piece 60c, so as to throw the ball into the fracturing fluid through the fifth port 66.

[0065] In addition, the third port 64 and the fourth port 65 can be reserved ports and used for temporarily connecting with other devices.

[0066] In some embodiments, the first port 62, the second port 63, the third port 64, the fourth port 65 and the fifth port 66 can be respectively provided with a connection conversion device 90, so as to realize the connection between the multi-way piece and other structural members through the connection conversion device 90. By connecting the connection conversion device 90 with part of the ports of the multi-way piece, the connection position can be reserved, and the on-site temporary addition of devices or replacement of the connection position can be facilitated.

[0067] Optionally, the connection conversion device 90 can include at least one of a nipple joint, a flange joint, a threaded joint and a clamp joint, so as to facilitate disassembly and assembly.

[0068] In other embodiments, the multi-way piece can also be a three-way piece, a four-way piece, a six-way piece, etc.

[0069] In some embodiments, the integrated skid can further include a base 11 and a plurality of support seats 12. The plurality of support seats 12 are respectively arranged on the base 11, and the plurality of multi-way pieces are respectively arranged on the corresponding support seats 12. The support seats 12 can stably support and fix the multi-way pieces, so as to ensure the stability of the multi-way pieces.

[0070] In addition, the first pressure relief valve 51 and the second pressure relief valve 52 can also be arranged on the support base 12 to prevent the first pressure relief valve 51 and the second pressure relief valve 52 from being suspended for a long time to cause cracks at the connection.

[0071] Optionally, the support base 12 can be provided with corresponding inclined supports to ensure the rigidity of the entire support base 12 and ensure that no vibration or deformation occurs during use.

[0072] In some embodiments, the plug valve 20, the first pressure relief valve 51 and the second pressure relief valve 52 can be configured with hydraulic actuators, pneumatic actuators, electric actuators, etc. to realize automatic control of each valve and avoid manual operation by personnel.

[0073] In summary, the embodiments of the present application integrate multiple components with different functions in the working process on the same skid, i.e., the ball throwing device 30, the plug valve 20, the first pressure relief device 40, the check valve 70, the second pressure relief device 50, the grease injection device 80, the control device 100, etc. are integrated on the base skid 10, so that the integrated skid can be connected with the high-low pressure manifold skid and the wellhead valve to perform fracturing operation, thereby saving the workload of on-site assembly.

[0074] The hydraulic system and the electric control system can also be integrated on the base skid 10, and personnel can operate on the control screen. At the same time, the wireless wifi liquid supply can be configured to realize remote control and avoid personnel entering the high-pressure area.

[0075] The ball throwing device 30 is integrated, and the ball is controlled by the control device 100 to ensure the continuity of the operation and reduce the safety risk of personnel.

[0076] The first pressure relief valve 51 and the second pressure relief valve 52 are connected in series, which can be opened according to a specific program to reduce the erosion of the plug and prolong the service life.

[0077] The columnar device is integrated, and the automatic quantitative grease injection of the plug valve 20 is realized by the control device 100 to reduce the workload of personnel.

[0078] The integrated skid is connected in series with multiple multi-way components, and the connection conversion device 90 is installed to reserve the connection position and facilitate the temporary addition of equipment or replacement of the connection position on site.

[0079] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, which are only illustrative and not limiting. Those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims.

Claims

1. An integrated skid, characterized in that, The integrated skid comprises a base skid (10), a plug valve (20), a ball throwing device (30), a first pressure relief device (40) and a plurality of multi-way pieces; The plurality of multi-way pieces are arranged on the base skid (10) and sequentially arranged along a first direction, wherein the first direction is parallel to the flow direction of the fracturing fluid; The plug valve (20) is arranged on the base skid (10) and connected between two adjacent multi-way pieces, for connecting or isolating the two adjacent multi-way pieces; The first pressure relief device (40) is connected to the multi-way piece at one end, for relieving pressure of the multi-way piece; The ball throwing device (30) is connected to the multi-way piece at the other end, for throwing balls into the multi-way piece. The plurality of multi-way pieces comprise a first multi-way piece (60a), a second multi-way piece (60b) and a third multi-way piece (60c) arranged along the first direction; 2. The integrated sled of claim 1, wherein, The first pressure relief device (40) is connected to the first multi-way piece (60a), the plug valve (20) is connected between the first multi-way piece (60a) and the second multi-way piece (60b), and the ball throwing device (30) is connected to the third multi-way piece (60c). The integrated skid further comprises a check valve (70) connected between the second multi-way piece (60b) and the third multi-way piece (60c).

3. The integrated sled of claim 2, wherein, The first pressure relief device (40) comprises a pressure relief pipeline (41), a safety valve (42) and a pressure detection element (43); 4. The integrated sled of claim 1, wherein, The pressure relief pipeline (41) is connected to the multi-way piece, the safety valve (42) is arranged on the pressure relief pipeline (41), and the pressure detection element (43) is arranged on the pressure relief pipeline (41); The safety valve (42) is used to open when the pressure detection element (43) detects that the pressure in the pressure relief pipeline (41) exceeds a preset pressure, so that the fracturing fluid in the multi-way piece is discharged through the pressure relief pipeline (41). The integrated skid further comprises a second pressure relief device (50), which comprises a first pressure relief valve (51) and a second pressure relief valve (52); 5. The integrated sled of claim 2, wherein, The first pressure relief valve (51) is connected to the third multi-way piece (60c), and the second pressure relief valve (52) is connected in series with the first pressure relief valve (51). The integrated skid further comprises a grease injection device (80) arranged on the base skid (10) and connected to the plug valve (20), for injecting grease to the plug valve (20).

6. The integrated sled of claim 1, wherein, The integrated skid further comprises a control device (100) electrically connected to the plug valve (20), the ball throwing device (30) and the grease injection device (80), respectively, and the control device (100) is electrically connected to a remote control terminal in a wired or wireless manner.

7. The integrated sled of claim 6, wherein, The multi-way piece is a five-way piece, which comprises a cavity (61) and first, second, third, fourth and fifth ports (62, 63, 64, 65 and 66) respectively communicating with the cavity (61); 8. The integrated sled of any of claims 1-7, wherein, ​ The first port (62) and the second port (63) are oppositely arranged along the first direction, the third port (64) and the fourth port (65) are oppositely arranged along the second direction, and the fifth port (66) is arranged along the third direction, the first direction, the second direction and the third direction being perpendicular to each other; One end of the plug valve (20) is connected with the second port (63) of the front one of the two adjacent five-way pieces, the other end of the plug valve (20) is connected with the first port (62) of the rear one of the two adjacent five-way pieces, the first pressure relief device (40) is connected with the fifth port (66), and the ball throwing device (30) is connected with the fifth port (66).

9. The integrated sled of claim 8, wherein, The first port (62), the second port (63), the third port (64), the fourth port (65) and the fifth port (66) are respectively provided with a connection conversion device (90); The connection conversion device (90) comprises at least one of a nipple joint, a flange joint, a threaded joint and a clamp joint.

10. The integrated sled of claim 1, wherein, The bottom skid (10) comprises a base (11) and a plurality of support seats (12), and the plurality of support seats (12) are respectively arranged on the base (11). The plurality of multi-way pieces are respectively arranged on the corresponding support seats (12).

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