Equipment for monitoring performance of fracturing fluid

Abstract

The invention discloses equipment for monitoring the performance of fracturing fluid. The equipment is used for monitoring the performance of the fracturing fluid. The equipment comprises a proportional liquid mixing module, a density measurement module, a viscosity measurement module, a resistance reduction rate measurement module and a control and communication module, the control and communication module specifically executes the following method: acquiring the liquid density of a liquid storage tank and the sand density of a fracturing blender truck tank, and calculating the sand concentration of a target fracturing fluid sample based on the density, mass and volume of the target fracturing fluid sample in combination with the liquid density and the sand density; the initial pressure difference of the resistance reduction rate measurement module before measurement is obtained, and the resistance reduction rate of the target fracturing fluid sample is calculated according to the inlet pressure, the outlet pressure and the initial pressure difference; the performance of the fracturing fluid is monitored in real time based on the viscosity, the resistance reduction rate, the sand concentration and the density.

Description

Technical Field

[0001] The present application relates to the field of fracturing operations, and in particular to a device for monitoring the performance of fracturing fluid. Background Art

[0002] Fracturing fluid is a working fluid widely used in the process of oil and gas field exploitation. It is a complex fluid mixed with multiple chemical substances and additives in specific proportions. It has the characteristics of high viscosity and strong sand-carrying capacity. It can be injected into the rock pores and cracks of the oil and gas layer under high pressure, expanding the formation to form new channels or expanding the original channels, thereby improving the permeability and recovery rate of oil and gas. However, the composition of fracturing fluid is complex. If the performance of fracturing fluid does not meet the standards, it will seriously affect the supporting effect of formation cracks. Therefore, monitoring fracturing fluid is a key task in oil test and completion projects.

[0003] In the prior art, monitoring of fracturing fluid is usually performed by using a rotational viscometer to monitor a portion of the extracted fracturing fluid sample. The rotating rotor of the rotational viscometer produces a shear effect on the fracturing fluid. At the same time, the sensor in the viscometer measures the corresponding shear stress, and then calculates the viscosity value according to a specific formula. The viscosity value is used to determine whether the performance of the fracturing fluid sample meets the requirements.

[0004] However, the performance of the fracturing fluid is determined by the viscosity value obtained by monitoring the fracturing fluid sample using a rotational viscometer. The fracturing fluid sample obtained may be uneven, and the calculated viscosity value cannot accurately represent the viscosity of the entire fracturing fluid. In addition, determining its performance only by calculating the viscosity value is too single a monitoring parameter, further reducing the accuracy of monitoring and resulting in failure to achieve the expected fracturing effect. Summary of the Invention

[0005] In order to solve the above technical problems, the present application provides a device for monitoring the performance of fracturing fluid.

[0006] The technical solution provided in this application is described below:

[0007] The present application provides a device for monitoring the performance of fracturing fluid, the device comprising a proportional mixing module, a density measurement module, a viscosity measurement module, a drag reduction rate measurement module, and a control and communication module;

[0008] The proportional liquid mixing module is used to extract liquid from the liquid storage tank and the sand mixing tank according to a preset ratio and mix them to obtain a target fracturing fluid sample;

[0009] The density measurement module is used to measure the target fracturing fluid sample to obtain the density, mass and volume of the target fracturing fluid sample;

[0010] The viscosity measurement module is used to measure the target fracturing fluid sample to obtain the viscosity of the target fracturing fluid sample;

[0011] The drag reduction rate measurement module is used to measure the target fracturing fluid sample to obtain the inlet pressure and outlet pressure;

[0012] The control and communication module specifically performs the following method:

[0013] Obtaining the liquid density of the liquid storage tank and the sand density of the sand blender tank, and calculating the sand concentration of the target fracturing fluid sample based on the density, mass, and volume of the target fracturing fluid sample in combination with the liquid density and the sand density;

[0014] Obtaining an initial pressure difference of the drag reduction rate measurement module before measurement, and calculating the drag reduction rate of the target fracturing fluid sample based on the inlet pressure, the outlet pressure, and the initial pressure difference;

[0015] The performance of the fracturing fluid is monitored in real time based on the viscosity, the drag reduction rate, the sand concentration, and the density.

[0016] Optionally, the proportional liquid mixing module includes a first power pump, a second power pump, a first proportional valve and a second proportional valve;

[0017] The first power pump is connected to the liquid storage tank through the pipeline, and is used to extract liquid from the liquid storage tank;

[0018] The second power pump is connected to the sand blender tank via the pipeline and is used to extract liquid from the sand blender tank;

[0019] The first proportional valve and the second proportional valve each include an input regulating valve and two output regulating valves;

[0020] The first power pump is connected to the input regulating valve of the first proportional valve through a pipeline, so as to control the extraction ratio of the liquid in the liquid storage tank;

[0021] The second power pump is connected to the input regulating valve of the second proportional valve through a pipeline, so as to control the extraction ratio of the liquid in the sand blender tank.

[0022] Optionally, the proportional liquid mixing module further includes a liquid mixing chamber and a plurality of pipelines;

[0023] The liquid mixing chamber is connected to one of the output regulating valves of the first proportional valve via the pipeline, so as to control the proportional output of the liquid extracted from the liquid storage tank to the liquid mixing chamber; the other output regulating valve of the first proportional valve is connected to the liquid storage tank via the pipeline, so as to return the liquid of the liquid storage tank that has not been output to the liquid mixing chamber to the liquid storage tank;

[0024] The liquid mixing chamber is connected to one of the output regulating valves of the second proportional valve through the pipeline, so as to control the proportional output of the liquid extracted from the blender tank to the liquid mixing chamber. The other output regulating valve of the second proportional valve is connected to the blender tank through the pipeline, so as to return the liquid in the blender tank that has not been output to the liquid mixing chamber to the blender tank.

[0025] Optionally, the density measurement module includes a mass flow meter and several pipelines;

[0026] The mass flow meter is connected to the mixing fluid chamber via the pipeline, and is used to transmit the target fracturing fluid sample in the mixing fluid chamber to the mass flow meter for measurement;

[0027] The mass flow meter is connected to the viscosity measurement module via the pipeline, and is used to transmit the target fracturing fluid sample that has completed measurement to the viscosity measurement module for measurement.

[0028] Optionally, the viscosity measurement module includes a first tee, a viscometer, and a plurality of pipelines, wherein the first tee includes a first inlet, a first outlet, and a first bypass port;

[0029] The first inlet is connected to the density measurement module through a pipeline, and is used to receive the target fracturing fluid sample that has completed measurement by the density measurement module;

[0030] The first bypass port is connected to the viscometer and is used to transmit the received target fracturing fluid sample to the viscometer for measurement;

[0031] The first outlet is connected to the drag reduction rate measurement module through a pipeline, and is used to transmit the target fracturing fluid sample that has completed the viscometer measurement to the drag reduction rate measurement module.

[0032] Optionally, the drag reduction rate measurement module includes: a spiral coil, a first pressure sensor, a second pressure sensor, a second tee, a cross-connection, a plurality of pipelines and valves, wherein the second tee includes a second inlet, a second outlet and a second bypass port, and the cross-connection includes a first connection port, a second connection port, a third connection port and a fourth connection port;

[0033] The second inlet is connected to the viscosity measurement module through a pipeline, and is used to receive the target fracturing fluid sample that has completed viscometer measurement;

[0034] The second bypass port is connected to the first pressure sensor and is used to measure the inlet pressure of the target fracturing fluid sample;

[0035] The second outlet is connected to one end of the spiral coil, and the other end of the spiral coil is connected to the first connection port, for transmitting the target fracturing fluid sample with the measured inlet pressure to the cross-connection port;

[0036] The second connection port is connected to the second pressure sensor and is used to measure the outlet pressure of the target fracturing fluid sample;

[0037] The third connecting port is connected to the fracturing operation vehicle through the pipeline;

[0038] The fourth connection port is connected to the valve and is used to control the flow direction of the target fracturing fluid sample;

[0039] The valve is connected to the waste fluid pool through the pipeline and is used to discharge and manage the target fracturing fluid samples that do not meet the requirements.

[0040] Optionally, the pipeline, the spiral coil, the second tee, the four-way valve and the valve all have the same inner diameter.

[0041] Optionally, the control and communication module includes a PLC, a first relay and a second relay;

[0042] The PLC is connected to the proportional mixing module, the density measurement module, the viscosity measurement module, and the drag reduction rate measurement module, and is used to receive measurement data and send control signals;

[0043] The PLC controls the proportional liquid mixing module through the first relay and the second relay.

[0044] Optionally, the sand concentration includes a sand concentration volume ratio and a sand concentration mass ratio, and the sand concentration volume ratio is calculated by the following formula:

[0045] T = (MV*P1) / (V*P2-V*P1);

[0046] Wherein, represents the sand concentration volume ratio, represents the mass, represents the volume, represents the density, and represents the sand density;

[0047] The sand concentration mass ratio is calculated by the following formula:

[0048] Z=(P2*M-P2*V*P1) / (P*V*P2-P*V*P1);

[0049] Among them, represents the sand concentration mass ratio, represents the mass, represents the volume, represents the density, and represents the sand density.

[0050] Optionally, the device further includes:

[0051] Reconnecting one end of the first power pump connected to the liquid storage tank through the pipeline to a clean water tank, so as to deliver clean water to the equipment for cleaning through the first power pump;

[0052] The first proportional valve is connected to the liquid storage tank through the pipeline and then connected to the waste liquid pool, so as to transport the waste liquid after cleaning to the waste liquid pool through the first proportional valve;

[0053] The second power pump is connected to the sand blender tank through the pipeline and then connected to the clean water tank, so as to deliver clean water to the equipment for cleaning through the second power pump;

[0054] The second proportional valve is connected to one end of the sand blender tank through the pipeline and is reconnected to the waste liquid pool, so as to transport the waste liquid after cleaning to the waste liquid pool through the second proportional valve.

[0055] It can be seen from the above technical solutions that this application has the following advantages:

[0056] 1. The equipment monitors the fracturing fluid through the density, viscosity, drag reduction rate and sand concentration obtained by multiple modules. It can more comprehensively reflect the performance of the fracturing fluid and more accurately determine whether the fracturing fluid is suitable for the current fracturing operation, thereby improving the success rate of the fracturing operation and avoiding the failure of the fracturing operation due to a single monitoring parameter.

[0057] 2. The proportional mixing module in this application extracts liquid according to a preset ratio and mixes it to obtain the target fracturing fluid sample. The sample obtained in this way can avoid the measurement error caused by sample unevenness, and can better reflect the composition of the fracturing fluid actually used, thereby improving the accuracy of subsequent measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions in this application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0059] Figure 1 A schematic structural diagram of an embodiment of a device for monitoring fracturing fluid performance provided in this application;

[0060] Figure 2 A schematic flow chart of an embodiment of a control and communication module in a device for monitoring fracturing fluid performance provided in this application;

[0061] Figure 3This is a logical diagram of an embodiment of a control and communication module in the equipment for monitoring the performance of fracturing fluid provided in the present application. DETAILED DESCRIPTION

[0062] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only used to illustrate the relative position relationship between the various components or components, and do not particularly limit the specific installation orientation of the various components or components.

[0063] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0064] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0065] In addition, the structures, proportions, sizes, etc. drawn in the drawings in this application are only used to match the contents disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0066] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in this application. Obviously, the embodiments described are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0067] Fracturing fluid is a fluid that plays a key role in oil and natural gas extraction. Its principle is to use high pressure to inject it into the formation, so that cracks are formed in the rock layer and they are stretched open, providing a flow channel for oil and gas. Its working scene is mostly underground in oil and gas wells. The fracturing fluid is forcefully injected through fracturing equipment. It needs to have a variety of important properties, such as suitable viscosity to carry the proppant into the cracks and distribute it evenly; low damage to reduce adverse effects on the formation and formation fluids; high stability to maintain stable performance in the complex temperature and pressure environment underground to ensure the smooth progress of mining operations.

[0068] See also Figure 1 , the present application provides a device for monitoring the performance of fracturing fluid, comprising:

[0069] Proportional mixing module 01, density measurement module 02, viscosity measurement module 03, drag reduction rate measurement module 04, control and communication module 05;

[0070] The proportional liquid mixing module 01 is used to extract the liquid from the liquid storage tank 06 and the sand blender tank 07 according to the preset ratio and mix them to obtain the target fracturing fluid sample;

[0071] The density measurement module 02 is used to measure the target fracturing fluid sample to obtain the density, mass and volume of the target fracturing fluid sample;

[0072] The viscosity measurement module 03 is used to measure the target fracturing fluid sample to obtain the viscosity of the target fracturing fluid sample;

[0073] The drag reduction rate measurement module 04 is used to measure the target fracturing fluid sample to obtain the inlet pressure and outlet pressure.

[0074] In actual application, when the proportional mixing module 01 extracts liquid from the liquid storage tank 06 and the sand mixing tank 07 according to a preset ratio and mixes them to obtain the target fracturing fluid sample, the target fracturing fluid sample will be transported to the density measurement module 02, which measures it and obtains the density, mass and volume of the target fracturing fluid sample. After the density measurement module 02 completes the measurement, the target fracturing fluid sample will be transported to the viscosity measurement module 03, which measures the target fracturing fluid sample and obtains the viscosity of the target fracturing fluid sample. After the viscosity measurement module 03 completes the measurement, the target fracturing fluid sample will be transported to the drag reduction rate measurement module 04, which measures the target fracturing fluid sample and obtains the inlet pressure and outlet pressure. During the entire working process, the control and communication module 05 is responsible for controlling the proportional mixing module 01, the density measurement module 02, the viscosity measurement module 03, and the drag reduction rate measurement module 04 and realizing the communication and coordination work between each module.

[0075] See also Figure 2The present application first provides an embodiment of a control and communication module 05 in a device for monitoring the performance of a fracturing fluid, the embodiment comprising:

[0076] S201, obtaining the liquid density of the liquid storage tank 06 and the sand density of the sand mixing tank 07, and calculating the sand concentration of the target fracturing fluid sample based on the density, mass and volume of the target fracturing fluid sample in combination with the liquid density and the sand density;

[0077] In this embodiment, it is first necessary to measure the density of the liquid in the liquid storage tank 06 and the liquid in the sand mixing tank 07, respectively, so as to obtain the liquid density of the liquid storage tank 06 and the sand density of the sand mixing tank 07. The density, mass, and volume of the target fracturing fluid sample are obtained by the proportional mixing module 01 extracting the liquids from the liquid storage tank 06 and the sand mixing tank 07 according to a preset ratio and mixing them to obtain the target fracturing fluid sample. The target fracturing fluid sample is then transported to the density measurement module 02, which measures it and obtains the density, mass, and volume of the target fracturing fluid sample. When calculating the sand concentration of the target fracturing fluid sample, it is necessary to calculate the sand concentration of the target fracturing fluid sample based on the principle of material mixing using the obtained data of the density, mass, volume of the target fracturing fluid sample, the liquid density of the liquid storage tank 06, and the sand density of the sand mixing tank 07, so as to obtain the sand concentration of the target fracturing fluid sample.

[0078] The sand concentration includes the sand concentration volume ratio and the sand concentration mass ratio. The sand concentration volume ratio is calculated by the following formula:

[0079] T = (MV*P1) / (V*P2-V*P1);

[0080] Where T represents the sand concentration volume ratio, M represents mass, V represents volume, P1 represents density, and P2 represents sand density;

[0081] The sand concentration mass ratio is calculated by the following formula:

[0082] Z=(P2*M-P2*V*P1) / (P*V*P2-P*V*P1);

[0083] Among them, Z represents the sand concentration mass ratio, M represents mass, V represents volume, P1 represents density, and P2 represents sand density.

[0084] This embodiment accurately calculates the sand concentration of the target fracturing fluid sample by combining data on the density, mass, volume, liquid density of the liquid storage tank 06, and sand density of the sand mixer tank 07. This avoids the deterioration of the fluidity of the fracturing fluid due to excessively high sand concentration, and avoids the inability to effectively support the fracture due to excessively low sand concentration, thereby improving the success rate of subsequent fracturing operations.

[0085] S202, obtaining the initial pressure difference of the drag reduction rate measurement module 04 before measurement, and calculating the drag reduction rate of the target fracturing fluid sample based on the inlet pressure, outlet pressure and the initial pressure difference;

[0086] Drag reduction rate is one of the key indicators to measure the performance of fracturing fluid. A higher drag reduction rate means that the fracturing fluid can effectively reduce the friction resistance of the fluid when flowing in underground cracks, which helps to reduce energy loss during the fracturing process and allows the fracturing fluid to penetrate deeper into the formation, thereby expanding the effective range of fracturing and improving oil and gas extraction efficiency.

[0087] In this embodiment, before measuring the drag reduction rate of the target fracturing fluid sample, the initial pressure difference when the drag reduction rate measurement module 04 is in an unmeasured state must be obtained first. The initial pressure difference is the pressure difference obtained when clean water passes through the drag reduction rate measurement module 04. After the target fracturing fluid sample is transported to the drag reduction rate measurement module 04, the drag reduction rate measurement module 04 measures the inlet pressure when the target fracturing fluid sample is input into the module and the outlet pressure when the target fracturing fluid sample is output from the module. Then, based on the obtained initial pressure difference, inlet pressure and outlet pressure, the drag reduction rate calculation formula is used for calculation. The calculation formula is constructed based on the principles of fluid mechanics. It mainly subtracts the outlet pressure from the inlet pressure to obtain the actual pressure difference of the target fracturing fluid sample during the measurement process, and then divides the value of the initial pressure difference minus the actual pressure difference by the initial pressure difference to obtain the drag reduction rate of the target fracturing fluid sample.

[0088] This embodiment measures the initial pressure difference and calculates the resistance reduction rate in combination with the inlet pressure and outlet pressure, thereby avoiding fracturing operation failure due to unclear resistance reduction performance of the fracturing fluid and further improving the success rate of the fracturing operation.

[0089] S203. Real-time monitoring of fracturing fluid performance based on viscosity, drag reduction rate, sand concentration, and density.

[0090] In this embodiment, the viscosity, drag reduction, sand concentration, and density of the target fracturing fluid sample are measured and obtained. These parameters are measured or calculated by the viscosity measurement module 03, drag reduction measurement module 04, density measurement module 02, and proportional mixing module 01, respectively. The viscosity, drag reduction, sand concentration, and density are input into the control and communication module 05, thereby enabling the user to monitor the fracturing fluid performance in real time. During the actual fracturing operation, the measured values of these parameters are continuously updated as the operation progresses to continuously track changes in the fracturing fluid performance.

[0091] This embodiment monitors the fracturing fluid through the density, viscosity, drag reduction rate, and sand concentration obtained by multiple modules, which can more comprehensively reflect the performance of the fracturing fluid and more accurately determine whether the fracturing fluid is suitable for the current fracturing operation, thereby improving the success rate of the fracturing operation and avoiding fracturing operation failures caused by a single monitoring parameter.

[0092] In an optional embodiment, the proportional mixing module 01 includes a first power pump 08, a second power pump 09, a first proportional valve 10 and a second proportional valve 11;

[0093] The first power pump 08 is connected to the liquid storage tank 06 through a pipeline, and is used to extract liquid from the liquid storage tank 06;

[0094] The second power pump 09 is connected to the sand blender tank 07 through a pipeline, and is used to extract liquid from the sand blender tank 07;

[0095] The first proportional valve 10 and the second proportional valve 11 each include an input regulating valve and two output regulating valves;

[0096] The first power pump 08 is connected to the input regulating valve of the first proportional valve 10 through a pipeline, so as to control the extraction ratio of the liquid in the liquid storage tank 06;

[0097] In this embodiment, an implementation method of a proportional liquid mixing module 01 is provided, and the proportional liquid mixing module 01 includes a first power pump 08, a second power pump 09, a first proportional valve 10 and a second proportional valve 11, wherein the first proportional valve 10 and the second proportional valve 11 each include an input port regulating valve and two output port regulating valves. When the liquids in the liquid storage tank 06 and the sand blender tank 07 are mixed according to a preset ratio to obtain a target fracturing fluid sample, the liquid in the liquid storage tank 06 will first be pumped out by the first power pump 08 through the pipeline, and the first power pump 08 will then transfer the pumped liquid to the input regulating valve of the first proportional valve 10 through the pipeline. The input regulating valve of the first proportional valve 10 will distribute and adjust the incoming liquid through its two output regulating valves according to the preset ratio, and the liquid after the adjusted ratio will then flow to the mixing area through the pipeline. At the same time, the liquid in the sand blender tank 07 will also be pumped out by the second power pump 09 through the pipeline, and the second power pump 09 will then transfer the pumped liquid to the input regulating valve of the second proportional valve 11 through the pipeline. The input regulating valve of the second proportional valve 11 will also distribute and adjust the incoming liquid through its two output regulating valves according to the preset ratio, and then the liquid after the adjusted ratio will flow to the mixing area through the pipeline.

[0098] The first power pump 08 and the second power pump 09 are respectively responsible for extracting the liquid from the liquid storage tank 06 and the liquid from the sand mixing tank 07 according to a preset ratio, and a first proportional valve 10 or a second proportional valve 11 with an adjustment function is provided between the mixing areas connected to the first power pump 08 and the second power pump 09 respectively. This arrangement enables the mixing ratio of the fracturing fluid to be precisely controlled, ensuring that the target fracturing fluid sample obtained each time has consistent performance parameters, thereby improving the success rate and efficiency of the fracturing operation. At the same time, it can flexibly respond to the requirements of different geological conditions for the performance of the fracturing fluid, reducing the situation of poor fracturing effect or repeated operations due to improper proportions.

[0099] In an optional embodiment, the proportional liquid mixing module 01 further includes a liquid mixing chamber 12 and a plurality of pipelines;

[0100] The mixing chamber 12 is connected to one of the output regulating valves of the first proportional valve 10 through a pipeline, and is used to control the proportional output of the liquid extracted from the liquid storage tank 06 to the mixing chamber 12. The other output regulating valve of the first proportional valve 10 is connected to the liquid storage tank 06 through a pipeline, and is used to return the liquid in the liquid storage tank 06 that has not been output to the mixing chamber 12 to the liquid storage tank 06.

[0101] The mixing chamber 12 is connected to one of the output regulating valves of the second proportional valve 11 through a pipeline, which is used to control the proportional output of the liquid extracted from the sand blending tank 07 to the mixing chamber 12. The other output regulating valve of the second proportional valve 11 is connected to the sand blending tank 07 through a pipeline, which is used to return the liquid in the sand blending tank 07 that has not been output to the mixing chamber 12 to the sand blending tank 07.

[0102] In this embodiment, an implementation method of a proportional mixing module 01 is provided. The proportional mixing module 01 also includes a mixing chamber 12 and a plurality of pipelines. When the proportional mixing module 01 starts to obtain a target fracturing fluid sample, a portion of the liquid in the liquid storage tank 06 that has been extracted by the first power pump 08 and proportionally distributed through the input regulating valve of the first proportional valve 10 will pass through one of the output regulating valves of the first proportional valve 10 and then flow into the mixing chamber 12 through the pipeline, while the other portion of the liquid in the liquid storage tank 06 that has not been output to the mixing chamber 12 will be The liquid in the blender tank 07, which has been pumped by the second power pump 09 and proportionally distributed through the input regulating valve of the second proportional valve 11, flows through one of the output regulating valves of the second proportional valve 11 and then flows through the pipeline into the mixing chamber 12. The remaining liquid in the blender tank 07 that has not been delivered to the mixing chamber 12 flows through the other output regulating valve of the second proportional valve 11 and then flows back to the blender tank 07 through the pipeline. In the mixing chamber 12, the proportional liquids from the blender tank 06 and the blender tank 07 are mixed to obtain the target fracturing fluid sample.

[0103] Different output regulating valves are set to distribute the liquid in proportion, with one part input into the mixing chamber 12 and the other part flowing back into the liquid storage tank 06 or the sand blender tank 07. This can accurately control the proportion of the liquid entering the mixing chamber 12. With this setting, both the liquid in the liquid storage tank 06 and the liquid in the sand blender tank 07 can be accurately mixed according to the predetermined proportion, ensuring that the component ratio of the target fracturing fluid sample is accurate, which helps to improve the stability of the fracturing fluid performance, and promptly flows back the liquid that has not entered the mixing chamber 12, avoiding the retention or incorrect mixing of excess liquid, thereby improving the efficiency of the entire mixing process.

[0104] In an optional embodiment, the density measurement module 02 includes a mass flow meter 13 and several pipelines;

[0105] The mass flow meter 13 is connected to the mixing chamber 12 via a pipeline, and is used to transmit the target fracturing fluid sample from the mixing chamber 12 to the mass flow meter 13 for measurement;

[0106] The mass flow meter 13 is connected to the viscosity measurement module 03 through a pipeline, and is used to transmit the target fracturing fluid sample that has completed measurement to the viscosity measurement module 03 for measurement.

[0107] In this embodiment, an implementation method of a density measurement module 02 is provided, which includes a mass flowmeter 13 and several pipelines. When it is necessary to obtain the density, mass and volume of the target fracturing fluid sample, the target fracturing fluid sample in the mixing chamber 12 will be transmitted to the mass flowmeter 13 of the density measurement module 02 through the pipeline, and the mass flowmeter 13 will measure the density, mass and volume of the target fracturing fluid sample. After the mass flowmeter 13 completes the measurement, the target fracturing fluid sample in the mass flowmeter 13 will be transmitted to the viscosity measurement module 03 through the pipeline for viscosity measurement.

[0108] The mixing chamber 12 is connected to the mass flowmeter 13 of the density measurement module 02 through a pipeline, and the density measurement module 02 is then connected to the viscosity measurement module 03, forming an orderly measurement process. In this test process, the target fracturing fluid sample can be directly transferred from the mixing chamber 12 to the mass flowmeter 13 for density, mass and volume measurement, reducing the time loss during the transfer of the target fracturing fluid sample. In addition, the integrated measurement of density, mass and volume reduces the error accumulation caused by multiple measurements and measurements with different equipment. After the mass flowmeter 13 completes the measurement, the target fracturing fluid sample can be directly transferred to the viscosity measurement module 03 through a pipeline for the next parameter measurement. The entire test process is continuous and smooth, avoiding the transmission exposure of the target fracturing fluid sample, thereby ensuring the reliability and accuracy of the measurement results.

[0109] In an optional embodiment, the viscosity measurement module 03 includes a first tee 14, a viscometer 15, and a plurality of pipelines, wherein the first tee 14 includes a first inlet, a first outlet, and a first bypass port;

[0110] The first inlet is connected to the density measurement module 02 through a pipeline, and is used to receive the target fracturing fluid sample that has completed the density measurement module 02 measurement;

[0111] The first bypass port is connected to the viscometer 15 and is used to transmit the received target fracturing fluid sample to the viscometer 15 for measurement;

[0112] The first outlet is connected to the drag reduction rate measurement module 04 through a pipeline, and is used to transmit the target fracturing fluid sample that has completed the measurement by the viscometer 15 to the drag reduction rate measurement module 04 .

[0113] In this embodiment, an implementation of a viscosity measurement module 03 is provided. The viscosity measurement module 03 includes a first tee 14, a viscometer 15, and several pipelines, wherein the first tee 14 includes a first inlet, a first outlet, and a first bypass port. When measuring the viscosity of a target fracturing fluid sample, the target fracturing fluid sample that has completed the density measurement module 02 measurement is transmitted to the first inlet of the viscosity measurement module 03 via the pipeline. The target fracturing fluid sample enters the interior of the first tee 14 through the first inlet, and is then transmitted to the viscometer 15 through the first bypass port for viscosity measurement. After the viscometer 15 completes the viscosity measurement of the target fracturing fluid sample, the target fracturing fluid sample that has completed the viscosity measurement returns to the first tee 14, and then the target fracturing fluid sample flows out at the first outlet. The outflowing target fracturing fluid sample is transmitted to the drag reduction rate measurement module 04 via the pipeline connecting the first outlet and the drag reduction rate measurement module 04.

[0114] The configuration of first tee 14 allows the target fracturing fluid sample to travel directly from the inlet through the bypass port to the viscometer 15, reducing circuitous transfers and unnecessary stops during sample transmission. This prevents sample loss due to prolonged exposure or in complex transmission paths, thereby improving overall measurement efficiency. The target fracturing fluid sample travels from density measurement module 02 to viscosity measurement module 03 and then to drag reduction measurement module 04, enabling viscosity measurement module 03 to quickly integrate into the entire measurement process. After the viscosity measurement is completed, the sample can be quickly transferred to drag reduction measurement module 04, significantly shortening the interval between each measurement step and further improving overall work efficiency.

[0115] In an optional embodiment, the drag reduction rate measurement module 04 includes a spiral coil 18, a first pressure sensor 17, a second pressure sensor 20, a second three-way valve 16, a four-way valve 19, a plurality of pipelines and a valve 21, wherein the second three-way valve 16 includes a second inlet, a second outlet and a second bypass port, and the four-way valve 19 includes a first connection port, a second connection port, a third connection port and a fourth connection port;

[0116] The second inlet is connected to the viscosity measurement module 03 through a pipeline, and is used to receive the target fracturing fluid sample that has completed the measurement by the viscometer 15;

[0117] The second bypass port is connected to the first pressure sensor 17 for measuring the inlet pressure of the target fracturing fluid sample;

[0118] The second outlet is connected to one end of the spiral coil 18 , and the other end of the spiral coil 18 is connected to the first connection port, for transmitting the target fracturing fluid sample with measured inlet pressure to the cross-port 19 ;

[0119] The second connection port is connected to the second pressure sensor 20 for measuring the outlet pressure of the target fracturing fluid sample;

[0120] The third connection port is connected to the fracturing operation vehicle through a pipeline;

[0121] The fourth connection port is connected to the valve 21 and is used to control the flow direction of the target fracturing fluid sample;

[0122] The valve 21 is connected to the waste fluid pool 22 through a pipeline, and is used to discharge and manage target fracturing fluid samples that do not meet the requirements.

[0123] In this embodiment, an implementation of a drag reduction rate measurement module 04 is provided. The drag reduction rate measurement module 04 includes a spiral coil 18, a first pressure sensor 17, a second pressure sensor 20, a second tee 16, a cross-connection 19, a plurality of pipelines, and a valve 21. The second tee 16 includes a second inlet, a second outlet, and a second bypass port, and the cross-connection 19 includes a first connection port, a second connection port, a third connection port, and a fourth connection port. When measuring the drag reduction rate of a target fracturing fluid sample, the target fracturing fluid sample, after viscosity measurement, is transmitted through a pipeline to the second inlet of the second tee 16 of the drag reduction rate measurement module 04. Since the second inlet is connected to the second bypass port, the target fracturing fluid sample is directly transmitted through the second inlet to the second bypass port, and then transmitted to the first pressure sensor 17 connected to the second bypass port to measure the inlet pressure of the target fracturing fluid sample. After completing the inlet pressure measurement, the target fracturing fluid sample with measured inlet pressure will flow out through the second outlet of the second tee 16. Since the second outlet is connected to one end of the spiral coil 18, and the other end of the spiral coil 18 is connected to the first connection port of the four-way pipe 19, the target fracturing fluid sample will be transmitted to the four-way pipe 19, and then transmitted to the second pressure sensor 20 through the second connection port connected to the four-way pipe 19 to measure the outlet pressure of the target fracturing fluid sample.

[0124] When the target fracturing fluid sample needs to be used directly in the fracturing operation, the target fracturing fluid sample with measured inlet and outlet pressures will flow out through the third connection port of the four-way valve 19, and then be transmitted to the fracturing operation vehicle through the pipeline connected to the third connection port of the fracturing operation vehicle; when the target fracturing fluid sample needs to be discharged to the waste liquid pool 22, the target fracturing fluid sample will flow out from the fourth connection port of the four-way valve 19, and then be transmitted to the pipeline discharge management of the waste liquid pool 22 through the valve 21 connected to the fourth connection port.

[0125] The target fracturing fluid sample is directly transmitted from the second inlet of the second tee 16 to the second bypass port to the first pressure sensor 17 to measure the inlet pressure. The setting of this transmission path reduces the interference factors in the transmission process of the target fracturing fluid sample, making the measured inlet pressure more accurate; when measuring the outlet pressure, the sample passes through the internal channel from the first connection port of the four-way 19 to the second pressure sensor 20 connected to the second connection port. This type of transmission method ensures the accuracy of the pressure measurement. After completing the inlet pressure measurement, the target fracturing fluid sample can quickly enter the spiral coil 18 through the second outlet of the second tee 16 and be transmitted to the four-way 19 for outlet pressure measurement, reducing the waiting and transmission time of the sample between different measurement links, improving the efficiency of the entire drag reduction rate measurement, and at the same time transmitting the target fracturing fluid sample that has completed all tests to the fracturing operation vehicle or waste liquid pool 22, which also improves the overall efficiency and reduces the waste of the target fracturing fluid sample.

[0126] In an optional embodiment, the pipeline, the spiral coil 18, the second tee 16, the cross 19 and the valve 21 all have the same inner diameter.

[0127] In actual applications, the pipeline, spiral coil 18, second tee 16, four-way 19 and valve 21 all use the same inner diameter. The target fracturing fluid sample can flow and be transmitted smoothly during the transmission process of each module without unnecessary pressure fluctuations or flow rate changes due to changes in the inner diameter, thereby avoiding the influence of different inner diameters on the measurement results.

[0128] It should be noted that, in addition to the pipeline, spiral coil 18, second tee 16, four-way 19 and valve 21 all using the same inner diameter, the first tee 14 and mass flowmeter 13 also use the same inner diameter, and the inner diameter size here is not specifically limited.

[0129] In an optional embodiment, the control and communication module 05 includes a PLC 24 , a first relay 25 , and a second relay 26 ;

[0130] PLC 24 is connected to the proportion mixing module 01, density measurement module 02, viscosity measurement module 03 and drag reduction rate measurement module 04, and is used to receive measurement data and send control signals;

[0131] PLC24 controls the proportional mixing module 01 through the first relay 25 and the second relay 26.

[0132] This embodiment provides an implementation of a control and communication module 05, which includes a PLC 24, a first relay 25, and a second relay 26. When it is necessary to control the proportional mixing module 01, the density measurement module 02, the viscosity measurement module 03, and the drag reduction rate measurement module 04 and obtain their measurement data, the proportional mixing module 01, the density measurement module 02, the viscosity measurement module 03, and the drag reduction rate measurement module 04 will each connect to the PLC 24 and then transmit their respective measurement data to the PLC 24. When it is necessary to further control the proportional mixing module 01, the PLC 24 sends a control signal to the proportional mixing module 01, and the control signal is first transmitted to the proportional mixing module 01 through the first relay 25 and the second relay 26, thereby achieving control of the proportional mixing module 01.

[0133] Because the proportional mixing module 01, density measurement module 02, viscosity measurement module 03, and drag reduction rate measurement module 04 are each directly connected to PLC24 to transmit measurement data, this one-to-one connection method reduces interference and errors in the data transmission process, allowing PLC24 to accurately obtain the measurement data of each module, providing an accurate basis for subsequent analysis and control decisions. When controlling the proportional mixing module 01, the control signal issued by PLC24 is transmitted through the first relay 25 and the second relay 26. The first relay 25 and the second relay 26 can perform signal amplification and isolation, and can accurately transmit the control signal of PLC24 to the proportional mixing module 01, so that the proportional mixing module 01 can accurately receive the control signal and perform the corresponding operation, thereby achieving precise control.

[0134] In an optional embodiment, the device can also realize a self-cleaning function, and the specific operation is as follows:

[0135] Connect one end of the first power pump 08 to the liquid storage tank 06 through a pipeline and reconnect it to the clean water tank to transport clean water to the equipment for cleaning;

[0136] The first proportional valve 10 is connected to the liquid storage tank 06 through a pipeline and then connected to the waste liquid tank 22, so as to transport the waste liquid after cleaning to the waste liquid tank 22 through the first proportional valve 10;

[0137] Connect one end of the second power pump 09 to the sand blender tank 07 through a pipeline and reconnect it to the clean water tank to deliver clean water to the equipment for cleaning;

[0138] The second proportional valve 11 is connected to one end of the sand blender tank 07 through a pipeline and then connected to the waste liquid pool 22 to transport the waste liquid after cleaning to the waste liquid pool 22 through the second proportional valve 11.

[0139] This embodiment provides a self-cleaning method for an apparatus for monitoring the performance of fracturing fluid. When cleaning the first part of the apparatus, clean water will pass through the pipeline reconnected between the clean water tank and the first power pump 08, and then the first power pump 08 will deliver the clean water to the apparatus, thereby realizing the use of clean water to clean the part of the apparatus related to the first power pump 08. After the cleaning is completed, the waste liquid generated by the cleaning will pass through the first proportional valve 10, and then through the pipeline reconnected between the first proportional valve 10 and the waste liquid tank 22 to deliver the waste liquid to the waste liquid tank 22; when cleaning the second part of the apparatus, clean water will pass through the pipeline reconnected between the clean water tank and the second power pump 09, and then the second power pump 09 will deliver the clean water to the apparatus, so as to clean the part of the apparatus related to the second power pump 09. After the cleaning is completed, the waste liquid will pass through the second proportional valve 11, and then through the pipeline reconnected between the second proportional valve 11 and the waste liquid tank 22 to deliver the waste liquid to the waste liquid tank 22.

[0140] By simply reconnecting the pipeline, clean water can be introduced into the equipment to clean the equipment. No complicated additional equipment or complicated operating procedures are required, and cleaning can be carried out quickly. After the cleaning is completed, the waste liquid generated by the cleaning can be directly transported to the waste liquid tank 22 through the pipeline reconnected between the first proportional valve 10 or the second proportional valve 11 and the waste liquid tank 22. This setting method quickly eliminates the waste liquid after cleaning, provides an environmental basis for the accuracy of the next measurement, and ensures the normal operation of the equipment and measurement work.

[0141] The first power pump 08 and the second power pump 09 independently deliver clean water to their respective related equipment parts for cleaning, which can avoid mutual interference during the cleaning process of different parts, improve the overall cleaning efficiency, and indirectly improve the use efficiency of the equipment.

[0142] It should be noted that the above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for monitoring the performance of fracturing fluid, characterized in that: The device includes a proportional mixing module, a density measurement module, a viscosity measurement module, a drag reduction rate measurement module, and a control and communication module; The proportional liquid mixing module is used to extract liquid from the liquid storage tank and the sand mixing tank according to a preset ratio and mix them to obtain a target fracturing fluid sample; The density measurement module is used to measure the target fracturing fluid sample to obtain the density, mass and volume of the target fracturing fluid sample; The viscosity measurement module is used to measure the target fracturing fluid sample to obtain the viscosity of the target fracturing fluid sample; The drag reduction rate measurement module is used to measure the target fracturing fluid sample to obtain the inlet pressure and outlet pressure; The control and communication module specifically performs the following method: Obtaining the liquid density of the liquid storage tank and the sand density of the sand blender tank, and calculating the sand concentration of the target fracturing fluid sample based on the density, mass, and volume of the target fracturing fluid sample in combination with the liquid density and the sand density; Obtaining an initial pressure difference of the drag reduction rate measurement module before measurement, and calculating the drag reduction rate of the target fracturing fluid sample based on the inlet pressure, the outlet pressure, and the initial pressure difference; The performance of the fracturing fluid is monitored in real time based on the viscosity, the drag reduction rate, the sand concentration, and the density.

2. The device according to claim 1, characterized in that The proportional liquid mixing module includes a first power pump, a second power pump, a first proportional valve and a second proportional valve; The first power pump is connected to the liquid storage tank through the pipeline, and is used to extract liquid from the liquid storage tank; The second power pump is connected to the sand blender tank via the pipeline and is used to extract liquid from the sand blender tank; The first proportional valve and the second proportional valve each include an input regulating valve and two output regulating valves; The first power pump is connected to the input regulating valve of the first proportional valve through a pipeline, so as to control the extraction ratio of the liquid in the liquid storage tank; The second power pump is connected to the input regulating valve of the second proportional valve through a pipeline, so as to control the extraction ratio of the liquid in the sand blender tank.

3. The device according to claim 2, characterized in that The proportional liquid mixing module also includes a liquid mixing chamber and a plurality of pipelines; The liquid mixing chamber is connected to one of the output regulating valves of the first proportional valve via the pipeline, so as to control the proportional output of the liquid extracted from the liquid storage tank to the liquid mixing chamber; the other output regulating valve of the first proportional valve is connected to the liquid storage tank via the pipeline, so as to return the liquid of the liquid storage tank that has not been output to the liquid mixing chamber to the liquid storage tank; The liquid mixing chamber is connected to one of the output regulating valves of the second proportional valve through the pipeline, so as to control the proportional output of the liquid extracted from the blender tank to the liquid mixing chamber. The other output regulating valve of the second proportional valve is connected to the blender tank through the pipeline, so as to return the liquid in the blender tank that has not been output to the liquid mixing chamber to the blender tank.

4. The device according to claim 3, characterized in that The density measurement module includes a mass flow meter and several pipelines; The mass flow meter is connected to the mixing fluid chamber via the pipeline, and is used to transmit the target fracturing fluid sample in the mixing fluid chamber to the mass flow meter for measurement; The mass flow meter is connected to the viscosity measurement module via the pipeline, and is used to transmit the target fracturing fluid sample that has completed measurement to the viscosity measurement module for measurement.

5. The device according to claim 1, characterized in that The viscosity measurement module includes a first tee, a viscometer, and a plurality of pipelines, wherein the first tee includes a first inlet, a first outlet, and a first bypass port; The first inlet is connected to the density measurement module through a pipeline, and is used to receive the target fracturing fluid sample that has completed measurement by the density measurement module; The first bypass port is connected to the viscometer and is used to transmit the received target fracturing fluid sample to the viscometer for measurement; The first outlet is connected to the drag reduction rate measurement module through a pipeline, and is used to transmit the target fracturing fluid sample that has completed the viscometer measurement to the drag reduction rate measurement module.

6. The device according to claim 1, characterized in that The drag reduction rate measurement module includes: a spiral coil, a first pressure sensor, a second pressure sensor, a second three-way valve, a four-way valve, a plurality of pipelines and valves, wherein the second three-way valve includes a second inlet, a second outlet and a second bypass port, and the four-way valve includes a first connection port, a second connection port, a third connection port and a fourth connection port; The second inlet is connected to the viscosity measurement module through a pipeline, and is used to receive the target fracturing fluid sample that has completed viscometer measurement; The second bypass port is connected to the first pressure sensor and is used to measure the inlet pressure of the target fracturing fluid sample; The second outlet is connected to one end of the spiral coil, and the other end of the spiral coil is connected to the first connection port, for transmitting the target fracturing fluid sample with the measured inlet pressure to the cross-connection port; The second connection port is connected to the second pressure sensor and is used to measure the outlet pressure of the target fracturing fluid sample; The third connecting port is connected to the fracturing operation vehicle through the pipeline; The fourth connection port is connected to the valve and is used to control the flow direction of the target fracturing fluid sample; The valve is connected to the waste fluid pool through the pipeline and is used to discharge and manage the target fracturing fluid samples that do not meet the requirements.

7. The device according to claim 6, characterized in that The pipeline, the spiral coil, the second tee, the four-way valve and the valve all have the same inner diameter.

8. The device according to claim 1, characterized in that The control and communication module includes a PLC, a first relay and a second relay; The PLC is connected to the proportional mixing module, the density measurement module, the viscosity measurement module, and the drag reduction rate measurement module, and is used to receive measurement data and send control signals; The PLC controls the proportional liquid mixing module through the first relay and the second relay.

9. The device according to any one of claims 1 to 8, characterized in that The sand concentration includes the sand concentration volume ratio and the sand concentration mass ratio, and the sand concentration volume ratio is calculated by the following formula: T = (MV*P1) / (V*P2-V*P1); Wherein, T represents the sand concentration volume ratio, M represents the mass, V represents the volume, P1 represents the density, and P2 represents the sand density; The sand concentration mass ratio is calculated by the following formula: Z=(P2*M-P2*V*P1) / (P*V*P2-P*V*P1); Wherein, Z represents the sand concentration mass ratio, M represents the mass, V represents the volume, P1 represents the density, and P2 represents the sand density.

10. The device according to any one of claims 1 to 8, characterized in that The device further comprises: Reconnecting one end of the first power pump connected to the liquid storage tank through the pipeline to a clean water tank, so as to deliver clean water to the equipment through the first power pump for cleaning; The first proportional valve is connected to the liquid storage tank through the pipeline and then connected to the waste liquid pool, so as to transport the waste liquid after cleaning to the waste liquid pool through the first proportional valve; The second power pump is connected to the sand blender tank through the pipeline and then connected to the clean water tank, so as to deliver clean water to the equipment for cleaning through the second power pump; The second proportional valve is connected to one end of the sand blender tank through the pipeline and is reconnected to the waste liquid pool, so as to transport the waste liquid after cleaning to the waste liquid pool through the second proportional valve.

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