Manifold skid and fracturing operation system

Abstract

The utility model provides a manifold sledge and fracturing operation system, the manifold sledge comprises a first manifold unit and a second manifold unit, the first manifold unit comprises a first manifold main channel and a first manifold branch channel, the first manifold main channel is provided with a first manifold input end used for being connected with sand mulling equipment, and the first manifold branch channel is provided with a second manifold input end used for being connected with sand mulling equipment. The first manifold input end is connected with the first manifold main channel, the first manifold branch channel is connected with the first manifold main channel, the first manifold branch channel is provided with a first manifold output end used for being connected with fracturing equipment, and a filtering device is arranged at the position of the first manifold input end and / or the first manifold output end. According to the utility model, large-particle impurities in mixed liquid can be filtered out, so that the requirement of fracturing operation on the quality of sand is lower, and dry sand or wet sand can be used as a raw material for fracturing operation, so that the purchase cost of the sand is greatly reduced, and the fracturing operation cost of a single well is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of fracturing operation devices, specifically to a manifold skid and fracturing operation system. Background Technology

[0002] Current fracturing processes use dry sand mixed with water to pump fracturing fluid. This dry sand is produced by filtering and drying wet sand, which is more expensive than using wet sand directly, hindering cost reduction in fracturing operations. Currently, the use of wet sand is increasingly common and a mainstream trend abroad. Domestically, dry sand is predominantly used for fracturing, resulting in higher costs. However, with domestic companies striving to reduce costs and increase efficiency, adopting wet sand will inevitably become the future choice for increasing fracturing production.

[0003] However, using untreated wet sand directly can lead to blockages in the delivery manifold and formation fractures, as the wet sand contains a large number of impurities (stones, branches, plastics, rubber, etc.). This can affect the fracturing effect. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a manifold skid and fracturing operation system to solve the above-mentioned problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, one aspect of the present invention provides a manifold skid, including a first manifold unit and a second manifold unit. The first manifold unit includes a first manifold main channel and a first manifold branch channel. A first manifold input end for connection with a sand mixing device is provided on the first manifold main channel. The first manifold branch channel is connected to the first manifold main channel. A first manifold output end for connection with a fracturing device is provided on the first manifold branch channel. A filter device is provided at the first manifold input end and / or the first manifold output end.

[0006] In some embodiments, the manifold skid further includes a skid frame, on which the first manifold unit and the second manifold unit are mounted via corresponding supports, and the position of the second manifold unit is higher in the vertical direction than the position of the first manifold unit.

[0007] In some embodiments, manifold connectors are provided on the first manifold input terminal, the first manifold output terminal, the second manifold input terminal, and the second manifold output terminal.

[0008] In some embodiments, a valve is provided at the location of the first manifold output end and / or the second manifold input end.

[0009] In some embodiments, the filter device is one or a combination of a T-type filter, a Y-type filter, a bucket filter, a basket filter, a cylinder filter, and a ring filter.

[0010] In some embodiments, the filter device has at least the functions of life monitoring and blockage detection and alarm.

[0011] In one aspect of the utility model, provide a fracturing operation system, including the manifold skid of any one of the above, still include sand mixing equipment, wellhead device and fracturing equipment, the manifold skid is connected with sand mixing equipment through first pipeline, the manifold skid is connected with wellhead device through second pipeline, the manifold skid is connected with fracturing equipment through third pipeline.

[0012] In one aspect of the utility model, provide a fracturing operation system, including manifold skid, sand mixing equipment, wellhead device and fracturing equipment, the manifold skid is connected with sand mixing equipment through first pipeline, the manifold skid is connected with wellhead device through second pipeline, the manifold skid is connected with fracturing equipment through third pipeline, set up filter device on the first pipeline and / or third pipeline.

[0013] In some embodiments, the manifold skid includes a first manifold unit and a second manifold unit, the first manifold unit includes a first manifold main channel and a first manifold branch channel, a first manifold input end is arranged on the first manifold main channel and connected with the second pipeline through the first manifold input end, the first manifold branch channel is connected with the first manifold main channel, a first manifold output end is arranged on the first manifold branch channel and connected with the third pipeline through the first manifold output end.

[0014] In some embodiments, the manifold skid includes a base, the base is arranged with the first manifold unit and the second manifold unit through at least one support part.

[0015] In some embodiments, the support part has a first mounting hole and a second mounting hole arranged in up and down directions, the first mounting hole is used for accommodating the first manifold unit, and the second mounting hole is used for accommodating the second manifold unit.

[0016] The utility model embodiment can solve the problem of excessive impurities in the sand mixing liquid using wet sand as raw material, filter out large particle impurities such as stones, branches and rubber blocks in the mixing liquid by integrating a filter device on the manifold skid or setting a filter device in the fracturing operation system, so that the fracturing operation has lower requirements on the quality of sand, and dry sand or wet sand can be used as raw material for fracturing operation, thereby greatly reducing the sand procurement cost and the fracturing operation cost of a single well. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 The arrangement schematic diagram of the fracturing operation system provided by the embodiment of the present application is shown in the figure.

[0019] Figure 2 The structure schematic diagram of the manifold skid provided by the embodiment of the present application is shown in the figure.

[0020] Figure 3 The end surface schematic diagram of the manifold skid provided by the embodiment of the present application is shown in the figure.

[0021] Figure 4 The structure schematic diagram of the manifold skid provided by another embodiment of the present application is shown in the figure.

[0022] Figure 5 The end surface schematic diagram of the manifold skid provided by another embodiment of the present application is shown in the figure.

[0023] Figure 6 The structure schematic diagram of the T-shaped filter in the embodiment of the present application is shown in the figure.

[0024] Figure 7 The structure schematic diagram of the Y-shaped filter in the embodiment of the present application is shown in the figure.

[0025] Figure 8 The structure schematic diagram of the bucket filter in the embodiment of the present application is shown in the figure.

[0026] Figure 9 The structure schematic diagram of the basket filter in the embodiment of the present application is shown in the figure.

[0027] Figure 10 The sectional view of the basket filter in the embodiment of the present application is shown in the figure.

[0028] Figure 11 The structure schematic diagram of the cylinder filter in the embodiment of the present application is shown in the figure.

[0029] Figure 12 The sectional view of the cylinder filter in the embodiment of the present application is shown in the figure.

[0030] Figure 13 The top view of the cylinder filter in the embodiment of the present application is shown in the figure.

[0031] Figure 14Structure diagram of the annular filter in one embodiment of the present application;

[0032] Figure 15 Top view of the annular filter in one embodiment of the present application;

[0033] Figure 16 Layout diagram of the manifold skid with the cylindrical filter in one embodiment of the present application;

[0034] Figure 17 Structure diagram of the manifold skid with the cylindrical filter in one embodiment of the present application;

[0035] Figure 18 Partial sectional view of the manifold skid with the cylindrical filter in one embodiment of the present application;

[0036] Figure 19 Structure diagram of the sand mixing equipment in one embodiment of the present application;

[0037] Figure 20 Structure diagram of the fracturing equipment in one embodiment of the present application;

[0038] Figure 21 Layout diagram of the fracturing operation system in another embodiment of the present application;

[0039] Figure 22 Structure diagram of the manifold skid in another embodiment of the present application;

[0040] Figure 23 Partial structure diagram of the manifold skid in another embodiment of the present application.

[0041] Reference signs:

[0042] 1-filtering device; 11-tubular body; 12-first filter connecting piece; 13-drain pipe; 14-drain cover; 15-filter screen; 16-through hole; 17-first pressure sensor; 18-filter screen cover; 19-filter hopper; 20-fixing ring; 20a-fixing ring mounting hole; 21-cylindrical body; 22-second filter connecting piece; 23-filter core assembly; 24-dismantling cover; 25-basket handle; 26-first discharge pipe; 27-second pressure sensor; 31-cylindrical body; 32-leg; 33-base; 34-cover plate; 34a-cover plate mounting hole; 35-first input pipe; 36-second discharge pipe; 37-third filter connecting piece; 38-filter screen; 38a-filter screen mounting hole; 39-sealing sheet; 40-third pressure sensor; 41-ring body; 42-second input pipe; 43-third discharge pipe; 44-fourth filter connecting piece; 45-first valve; 46-second valve; 47-first filter screen; 48-third valve; 49-fourth valve; 50-second filter screen; 51-first drain pipe; 52-second drain pipe; 53-fourth pressure sensor; 100-manifold skid; 101-first manifold unit; 1011-first manifold main channel; 1012-first manifold branch channel; 1013-first manifold input end; 1014-first manifold output end; 102-second manifold unit; 1021-second manifold main channel; 1022-second manifold branch channel; 1023-second manifold input end; 1024-second manifold output end; 103-skid rack; 104-bracket; 105-base; 106-supporting part; 110-first pipeline; 120-second pipeline; 130-third pipeline; 140-manifold connecting piece; 150-valve; 200-sand mixing device; 201-sand mixing tank; 202-sand feeding hopper; 203-suction manifold; 204-discharge manifold; 205-control device; 206-frequency conversion device; 300-wellhead device; 400-fracturing device; 401-plunger pump; 402-first manifold; 403-second manifold. DETAILED DESCRIPTION

[0043] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0044] It is to be understood that various alterations can be made to the embodiments described herein. Thus, the above description is not to be considered exhaustive, but rather is given as a pertinent example based on the present application. Other modifications will become apparent to those skilled in the art, which fall within the scope and spirit of the present application.

[0045] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the application given above, and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0046] These and other characteristics of the present application will become apparent from the following description of the preferred forms given, by way of non-limiting example, with reference to the annexed figures.

[0047] It is also to be understood that even though numerous characteristics and embodiments of the present application have been set forth in a manner providing a detailed description, deficiencies can be readily identified with respect to a number of other equivalent forms thereof which have not been particularized but are contemplated to be within the scope of the present application.

[0048] The above and other aspects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:

[0049] Specific embodiments of the present application are described hereinafter, with reference to the drawings; however, it will be understood that the application is not limited to the embodiments described, but can be carried out in various ways. Well-known and / or redundant functions and structures are not described in detail to avoid obscuring the present application unnecessarily. Therefore, the specific structural and functional details disclosed herein are not intended to limit the application, but merely to illustrate representative and exemplary bases for the claims and for teaching a person skilled in the art to employ the present application in substantially any appropriate detailed structure.

[0050] The specification can use phrases such as "in one embodiment", "in another embodiment", "in yet another embodiment", or "in other embodiments", which can refer to one or more of the same or different embodiments under the present application.

[0051] Embodiments of the present application provide a fracturing operation system, as shown in Figures 1 to 5 The fracturing operation system includes a manifold skid 100, a sand mixing device 200 connected to the manifold skid 100 through a first pipeline 110, a wellhead device 300 connected to the manifold skid 100 through a second pipeline 120, and a fracturing device 400 connected to the manifold skid 100 through a third pipeline 130. In this embodiment, the filter device 1 is arranged on the manifold skid 100.

[0052] The sand mixing device 200 is at least one, the wellhead device 300 is at least one, and the fracturing device 400 is at least one. The manifold skid 100 is, for example, a rectangular structure. In order to facilitate the arrangement of space, as Figure 1Said, the mixing sand equipment 200 and the wellhead device 300 here can be respectively arranged at both ends of the pipe manifold skid 100, and the fracturing equipment 400 is arranged at the side of the pipe manifold skid 100, wherein when the fracturing equipment 400 is multiple, multiple fracturing equipment 400 can be symmetrically arranged on both sides of the pipe manifold skid 100. In the embodiment, the number of the mixing sand equipment 200, the wellhead device 300 and the fracturing equipment 400 is at least one, and in the corresponding Figure 1 In the embodiment, the number of the mixing sand equipment 200, the wellhead device 300 and the fracturing equipment 400 is at least one, and in the corresponding

[0053] Further, as shown in Figure 2 And Figure 3 The pipe manifold skid 100 includes a first pipe manifold unit 101, a second pipe manifold unit 102 and a skid frame 103, wherein the first pipe manifold unit 101 and the second pipe manifold unit 102 are arranged on the skid frame 103 through corresponding supports 104, in particular, the position of the second pipe manifold unit 102 in the vertical direction is higher than that of the first pipe manifold unit 101, and here the supports 104 with different heights are used for the first pipe manifold unit 101 and the second pipe manifold unit 102 respectively. In the embodiment, the first pipe manifold unit 101 is a low-pressure pipe manifold unit, and the second pipe manifold unit 102 is a high-pressure pipe manifold unit, wherein the low-pressure pipe manifold unit is suitable for the flow of low-pressure fluid, and the high-pressure pipe manifold unit is suitable for the flow of high-pressure fluid, and here low pressure generally refers to 0.1-1MPa, and high pressure generally refers to 10-200MPa.

[0054] The mixing sand equipment 200 is connected with the first pipe manifold unit 101 through the first pipe 110, and the second pipe manifold unit 102 is connected with the wellhead device 300 through the second pipe 120; in addition, the fracturing equipment 400 is connected with the first pipe manifold unit 101 and the second pipe manifold unit 102 through the third pipe 130 respectively.

[0055] In this way, the mixing sand equipment 200 inputs low-pressure fluid to the first pipe manifold unit 101 of the pipe manifold skid 100 through the first pipe 110 and inputs to the fracturing equipment 400 through the third pipe 130, the fracturing equipment 400 pressurizes the fluid and inputs to the second pipe manifold unit 102 through the third pipe 130 and inputs the pressurized fluid to the wellhead device 300 through the second pipe 120.

[0056] Specifically, the first manifold unit 101 comprises a first manifold main passage 1011 and a first manifold branch passage 1012, the first manifold main passage 1011 is provided with a first manifold input end 1013 and connected with the sand mixing device 200 through the first manifold input end 1013, the first manifold branch passage 1012 is connected with the first manifold main passage 1011, the first manifold branch passage 1012 is provided with a first manifold output end 1014 and connected with the suction manifold of the fracturing device 400 through the first manifold output end 1014.

[0057] The second manifold unit 102 comprises a second manifold main passage 1021 and a second manifold branch passage 1022, the second manifold branch passage 1022 is connected with the second manifold main passage 1021, the second manifold branch passage 1022 is provided with a second manifold input end 1023 and connected with the discharge manifold of the fracturing device 400 through the second manifold input end 1023, the second manifold main passage 1021 is provided with a second manifold output end 1024 and connected with the wellhead device 300 through the second manifold output end 1024.

[0058] Further, the first manifold input end 1013, the first manifold output end 1014, the second manifold input end 1023 and the second manifold output end 1024 are provided with manifold connectors 140 to be connected with corresponding devices or equipment, the manifold connectors 140 can be flange connectors, nut connectors and the like.

[0059] Valves 150 are provided at the positions of the first manifold output end 1014 and the second manifold input end 1023 to be connected with the fracturing device 400, the valves 150 not only facilitate the control of the flow rate of fluid flowing into or out of the fracturing device 400, but also make it convenient to replace the manifold during operation, the valves 150 have power actuators, the valves 150 can be butterfly valves, ball valves, gate valves and the like, preferably butterfly valves, the power actuators of the valves 150 can be manual, electric, pneumatic or hydraulic.

[0060] As shown in Figure 2 The filter device 1 is integrated on the manifold skid 100, the filter device 1 can be provided at the position of the first manifold input end 1013, the low-pressure fluid from the sand mixing device 200 flowing into the first pipeline 110 is filtered by the filter device 1.

[0061] As shown in Figure 4 and Figure 5As shown, the filter device 1 can also be integrated at the position of the first manifold output end 1014 in the manifold skid 100 of the embodiment, so that when any manifold in the manifold skid 100 is blocked, the corresponding valve 150 on the manifold can be closed for cleaning the blockage, without affecting the normal operation of other manifolds.

[0062] In the embodiment, the filter device 1 arranged at the first manifold input end 1013 or the filter device 1 arranged at the first manifold output end 1014 can both achieve the effect of filtering large-particle impurities (such as branches, stones, shells, etc.) in the mixed solution.

[0063] The filter device 1 in the embodiment can be a T-shaped filter, a Y-shaped filter, a bucket filter, a basket filter, a cylinder filter, a ring filter, etc. In particular, the filter device 1 can be composed of one or more of the above filters.

[0064] Specifically, as shown in Figure 6 The T-shaped filter includes a tubular body 11, and first filter connectors 12 are arranged at opposite first and second ends of the tubular body 11. Fluid flows from the first end to the second end of the tubular body 11. The first filter connectors 12 can be flange connectors, or other connectors. A blowdown pipe 13 is connected between the first and second ends of the tubular body 11. The blowdown pipe 13 is perpendicular to the extension direction of the tubular body 11. A blowdown cover 14 is arranged on the blowdown pipe 13. A filter screen 15 is arranged in the tubular body 11. The filter screen 15 is arranged on the cross section of the tubular body 11. The filter screen 15 is uniformly provided with through holes 16. In particular, the filter screen 15 is arranged between the blowdown pipe 13 and the second end of the tubular body 11. In addition, first pressure sensors 17 are arranged on the upstream side and the downstream side of the tubular body 11 to detect the pressure on the upstream side (close to the inlet position) and the downstream side (close to the outlet position) inside the tubular body 11.

[0065] Further, as shown in Figure 7 The Y-shaped filter is similar to the T-shaped filter described above, except that the blowdown pipe 13 is at a predetermined angle with the extension direction of the tubular body 11. The predetermined angle can be an acute angle or an obtuse angle. Preferably, the blowdown pipe 13 is inclined towards the second end of the tubular body 11.

[0066] Further, as shown in Figure 8As shown, the bucket filter comprises a tubular body 11, opposite first and second ends of the tubular body 11 are respectively provided with first filter connectors 12, here fluid flows from the first end to the second end of the tubular body 11, here the first filter connectors 12 can be flange connectors, by n connectors, etc.; the first end of the tubular body 11 is provided with a filter cover 18 for plugging the first end of the tubular body 11, the inner side of the tubular body 11 is provided with a filter bucket 19, the larger diameter end of the filter bucket 19 is arranged on the inner side of the filter cover 18 through a fixing ring 20, for example, mounting holes 20a can be arranged on the fixing ring 20 to facilitate connection with the end of the tubular body 11.

[0067] In addition, the upstream side (close to the inlet position) and the downstream side (close to the outlet position) of the tubular body 11 are respectively provided with first pressure sensors 17 to detect the pressure of the upstream side and the downstream side inside the tubular body 11. In this embodiment, the bucket filter directly fixes the filter bucket 19 to the end of the tubular body 11, fluid enters the filter bucket 19 from the filter cover 18 to achieve filtration, the above structure is simple and easy to replace, and garbage and other blockages will be collected in the filter bucket 19, making it easy to clean garbage and other blockages.

[0068] Further, as shown in Figure 9 and Figure 10 The basket filter comprises a cylindrical body 21, a second filter connector 22 is arranged at the first end of the cylindrical body 21, a filter core assembly 23 is arranged in the cylindrical body 21, the filter core assembly 23 is arranged on a disassembly cover 24, the disassembly cover 24 is used to plug the second end of the cylindrical body 21, and a basket handle 25 is arranged on the disassembly cover 24; in addition, at least one first discharge pipe 26 is arranged on the side of the cylindrical body 21, the end of the first discharge pipe 26 is also provided with a second filter connector 22, wherein the second filter connector 22 here can be a flange connector, a by n connector, etc., here fluid flows into the first end of the cylindrical body 21 and is discharged from the first discharge pipe 26 after passing through the filter core assembly 23.

[0069] In addition, the upstream side (close to the inlet position) and the downstream side (close to the outlet position) of the tubular body 11 are respectively provided with first pressure sensors 17 to detect the pressure of the upstream side and the downstream side inside the tubular body 11. In this embodiment, the basket filter in the basket handle 25, the disassembly cover 24 and the filter core assembly 23 are designed as a whole, the filter core assembly 23 is directly taken out by rotating the disassembly cover 24, and the blockage can be conveniently and quickly poured out.

[0070] Further, as shown inFigures 11 to 13 As shown, the cartridge filter includes a cylindrical body 31, which is arranged on a base 33 through a leg 32, the cylindrical body 31 is arranged in a vertical direction, both ends of the cylindrical body 31 are respectively provided with a cover plate 34, for example, the cover plate 34 located above is arranged on the cylindrical body 31 through a cover plate mounting hole 34a, at least one first input pipe 35 is arranged below the side of the cylindrical body 31, at least one second discharge pipe 36 is arranged above the side of the cylindrical body 31, a third filter connecting piece 37 is arranged on the first input pipe 35 and the second discharge pipe 36, here the third filter connecting piece 37 can be a flange connecting piece, a nut connecting piece, etc.

[0071] Further, a filter screen 38 is arranged inside the cylindrical body 31, the filter screen 38 is arranged along the cross section of the cylindrical body 31, for example, arranged on the cylindrical body 31 through a filter screen mounting hole 38a, a sealing sheet 39 is arranged on the inner side of the cover plate 34 located above. Here, the fluid flows from the first input pipe 35 of the cylindrical body 31, passes through the filter screen 38, and is discharged from the second discharge pipe 36. In addition, the upstream side (close to the inlet position) and the downstream side (close to the outlet position) of the cylindrical body 31 are respectively provided with a third pressure sensor 40 to detect the pressure of the upstream side and the downstream side inside the cylindrical body 31. For the cartridge filter, the filter screen 38 can be replaced by opening the cover plate 34 located above, and the blockage inside the cylindrical body 31 can be cleaned by opening the cover plate 34 located below, which facilitates blockage cleaning.

[0072] As Figures 16 to 18 As shown, when a cartridge filter is used, for example, the cartridge filter is integrated with the manifold skid 100, wherein the low-pressure fluid enters the first manifold unit 101 from the first pipeline 110 and enters the cylindrical body 31 from the first input pipe 35, and the filtered fluid enters the fracturing equipment 400 through the first manifold unit 101 through the second discharge pipe 36.

[0073] As Figure 14 and Figure 15As shown, the ring filter comprises a ring body 41, two ends of the ring body 41 are respectively provided with a second input pipe 42 and a third discharge pipe 43, and a fourth filter connecting piece 44 is arranged on the second input pipe 42 and the third discharge pipe 43, which can be a flange connecting piece, a nut connecting piece or the like. One side of the ring body 41 forms a first filter channel, a first valve 45 and a second valve 46 are arranged on the first filter channel, and a first filter screen 47 is arranged between the first valve 45 and the second valve 46. The other side of the ring body 41 forms a second filter channel, a third valve 48 and a fourth valve 49 are arranged on the second filter channel, and a second filter screen 50 is arranged between the third valve 48 and the fourth valve 49. Here, the fluid flows into the second input pipe 42 of the ring body 41, and then flows through the filter screens on the first filter channel and the second filter channel and is discharged from the third discharge pipe 43. The ring filter of the embodiment has two filter channels, one of which is used and the other is standby, so that when the filter channel is blocked, the standby filter channel is started immediately, and the blocked filter channel is closed.

[0074] In addition, the first filter channel is connected with a first blowdown pipe 51 arranged between the first valve 45 and the second valve 46, and the second filter channel is connected with a second blowdown pipe 52 arranged between the third valve 48 and the fourth valve 49. In addition, fourth pressure sensors 53 are arranged on the upstream side (close to the inlet position) and the downstream side (close to the outlet position) of the ring body 41 to detect the pressures on the upstream side and the downstream side inside the ring body 41.

[0075] Specifically, in operation, the first valve 45 and the second valve 46 are opened, and the third valve 48 and the fourth valve 49 are closed. Once the first filter screen 47 between the first valve 45 and the second valve 46 is blocked, the third valve 48 and the fourth valve 49 are opened, and then the first valve 45 and the second valve 46 are closed to ensure uninterrupted operation. Then, the first blowdown pipe 51 is used to clean the blockage, and the operation is repeated. The valve can be a butterfly valve, a ball valve, a gate valve or the like, and the actuator can be electric, pneumatic, hydraulic or manual.

[0076] The filter device 1 of the embodiment has the functions of life monitoring, blockage monitoring and alarm. The life monitoring function of the filter device 1 is realized by measuring the size of the electrical signal to determine the life condition and feeding back the normal, damaged and about-to-be-replaced states to the control center. The blockage monitoring function of the filter device 1 is realized by the following way.

[0077] When pressure sensors are installed on both the upstream and downstream sides of the filter device 1, the pressure difference, for example, before and after the filter screen, is measured by the two pressure sensors. If the pressure difference exceeds a set threshold, an alarm is triggered, indicating that the filter device 1 is clogged and requires manual cleaning. Using two pressure sensors provides more accurate monitoring. When a single pressure sensor is used, an alarm is triggered once the measured value exceeds the upper limit of the working pressure, indicating that the filter device 1 is clogged and requires manual cleaning.

[0078] In addition, the flow rate inside the filter device 1 can be detected by a flow sensor. Once the flow rate of the liquid is lower than the lower limit of the working flow rate, an alarm is issued to indicate that the filter device 1 is blocked and needs to be manually cleaned. The flow sensor can be placed in any of the locations of the pressure sensor. Alternatively, a pressure sensor and a flow sensor can be used to monitor the pressure and flow rate inside the filter device 1 simultaneously. If the pressure value collected by the pressure sensor is greater than the upper limit of the working pressure value and the flow value collected by the flow sensor is lower than the lower limit of the working flow rate, an alarm is issued to indicate that the filter device 1 is blocked and needs to be manually cleaned.

[0079] The sand mixing device 200 in this embodiment can employ various driving methods, such as an electric motor-driven sand mixing device, a diesel engine-driven sand mixing device, or a turbine-driven sand mixing device. Furthermore, the sand mixing device 200 can be mounted on a vehicle, towed by a semi-trailer, or mounted on a skid. In this embodiment, an electric motor-driven sand mixing skid is used as an example. Figure 19 As shown, the sand mixing equipment 200 includes a sand mixing tank 201, a sand inlet hopper 202, a suction manifold 203, a discharge manifold 204, a control device 205, and a frequency converter 206. In this embodiment, the sand mixing equipment 200 can be equipped with filter devices 1 on both the suction manifold 203 and the discharge manifold 204. The filter device 1 on the suction manifold 203 is used to filter large particulate impurities in the clean water; the filter device 1 on the discharge manifold 204 can filter impurities in the mixture (mainly large particulate impurities in dry and wet sand, etc.). For example, the filter device 1 can be installed only on the discharge manifold 204.

[0080] The fracturing equipment 400 in this embodiment can employ various driving methods, such as electric motor-driven fracturing equipment, diesel engine-driven fracturing equipment, turbine-driven fracturing equipment, etc. Furthermore, the fracturing equipment 400 can be mounted on a vehicle, towed by a semi-trailer, or mounted on a skid. In this embodiment, an electric motor-driven fracturing skid is used as an example. Figure 20As shown, it comprises a plunger pump 401, a first manifold 402 and a second manifold 403, wherein the first manifold 402 is a low-pressure manifold, and the second manifold 403 is a high-pressure manifold. Here, the filter device 1 can be arranged at the first manifold 402 of the fracturing equipment 400, and in order to facilitate connection, the filter device 1 can be a Y-type filter, and the inlet of the Y-type filter is directly connected with the first manifold 402.

[0081] In another embodiment, as shown, Figure 21 Here, the filter device 1 can also be arranged between the sand mixing equipment 200 and the manifold skid 100, and in particular, arranged on the first pipeline 110 connecting the sand mixing equipment 200 and the manifold skid 100. Here, the filter device 1 is a separate device, which is convenient for replacement and maintenance.

[0082] For the filter device 1 arranged separately, the above-mentioned T-type filter, Y-type filter, bucket filter, basket filter, cylinder filter, ring filter and the like can be adopted. The manifold skid 100 of the embodiment comprises a base 105, and the first manifold unit 101 and the second manifold unit 102 are arranged by at least one support part 106. When the support part 106 is multiple, the multiple support parts 106 are arranged along the extension direction of the base 105. Figure 3 Different from the structure shown in the figure, as shown, Figures 22-23 In the embodiment, the first manifold unit 101 and the second manifold unit 102 are simultaneously supported by the separate support part 106, and the first manifold unit 101 does not comprise a filter device 1. Here, the support part 106 has a first mounting hole and a second mounting hole arranged in an up-down manner, the first mounting hole is used for accommodating the first manifold unit 101, and the second mounting hole is used for accommodating the second manifold unit 102.

[0083] The embodiment of the utility model can solve the problem of too many impurities in the sand mixing liquid using wet sand as raw material, and by integrating a filter device on the manifold skid or arranging a filter device in the fracturing operation system to filter out large-particle impurities such as stones, branches and rubber blocks in the mixed liquid, the quality requirement of sand for fracturing operation is low, and dry sand or wet sand can be used as raw material for fracturing operation, thereby greatly reducing the sand procurement cost and the fracturing operation cost of a single well.

[0084] In addition, the features of the embodiments shown in the drawings of the utility model or the various embodiments mentioned in the specification do not have to be understood as independent embodiments from each other. Instead, each feature described in one example of an embodiment can be combined with one or more other desired features from other embodiments, thereby generating other embodiments which are not described in words or with reference to the drawings.

[0085] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A manifold skid, characterized by, The manifold skid comprises a first manifold unit and a second manifold unit, the first manifold unit comprises a first manifold main channel and a first manifold branch channel, a first manifold input end for connecting with a sand mixing device is arranged on the first manifold main channel, the first manifold branch channel is connected with the first manifold main channel, a first manifold output end for connecting with a fracturing device is arranged on the first manifold branch channel, and a filter device is arranged at the position of the first manifold input end and / or the first manifold output end.

2. The manifold skid of claim 1, wherein, The manifold skid further comprises a skid frame, the first manifold unit and the second manifold unit are arranged on the skid frame through corresponding supports, and the position of the second manifold unit is higher than that of the first manifold unit in the vertical direction.

3. The manifold skid of claim 1, wherein, Manifold connectors are arranged on the first manifold input end, the first manifold output end, the second manifold input end and the second manifold output end.

4. The manifold skid of claim 1, wherein, A valve is arranged at the position of the first manifold output end and / or the second manifold input end.

5. The manifold skid of claim 1, wherein, The filter device is one of a T-shaped filter, a Y-shaped filter, a bucket filter, a basket filter, a cylinder filter and a ring filter, or a combination of one or more filters.

6. The manifold skid of claim 5, wherein, The filter device at least has the functions of life monitoring and blockage detection and alarm.

7. A fracturing operation system characterized by, The manifold skid of any one of claims 1-6, further comprising a sand mixing device, a wellhead device and a fracturing device, the manifold skid is connected with the sand mixing device through a first pipeline, the manifold skid is connected with the wellhead device through a second pipeline, and the manifold skid is connected with the fracturing device through a third pipeline.

8. A fracturing operation system characterized by, The manifold skid, the sand mixing device, the wellhead device and the fracturing device, the manifold skid is connected with the sand mixing device through a first pipeline, the manifold skid is connected with the wellhead device through a second pipeline, and the manifold skid is connected with the fracturing device through a third pipeline, and a filter device is arranged on the first pipeline and / or the third pipeline.

9. The fracturing operation system of claim 8, wherein, The manifold skid comprises a first manifold unit and a second manifold unit, the first manifold unit comprises a first manifold main channel and a first manifold branch channel, a first manifold input end is arranged on the first manifold main channel and connected with the first pipeline through the first manifold input end, the first manifold branch channel is connected with the first manifold main channel, a first manifold output end is arranged on the first manifold branch channel and connected with the third pipeline through the first manifold output end.

10. The fracturing operation system of claim 9, wherein, The manifold skid comprises a base, and the base arranges the first manifold unit and the second manifold unit through at least one support part.

11. The fracturing operation system of claim 10, wherein, The support part has a first mounting hole and a second mounting hole arranged in an up-down direction, the first mounting hole is used for accommodating the first manifold unit, and the second mounting hole is used for accommodating the second manifold unit.

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