WO2023116294A1

WO2023116294A1 - Fracturing pump detection method, system and device, and storage medium

Info

Publication number: WO2023116294A1
Application number: PCT/CN2022/132837
Authority: WO
Inventors: 李海龙; 孙建韬
Original assignee: 烟台杰瑞石油服务集团股份有限公司
Priority date: 2021-12-20
Filing date: 2022-11-18
Publication date: 2023-06-29
Also published as: CN114396377A

Abstract

A fracturing pump detection method, system and device, and a storage medium, relating to the technical field of fracturing devices. The fracturing pump detection method comprises: detecting stress information of a pull rod (1) of a fracturing pump by means of a sensor (2) at a power end of the fracturing pump; determining pump cavity liquid pressure information of the fracturing pump according to the stress information of the pull rod (1); and determining a detection result of the fracturing pump according to the pump cavity liquid pressure information and phase information of a plunger (3) corresponding to the stress information of the pull rod (1). The process of intermediate filtering and algorithm feature recognition of the conventional vibration sensor is canceled, meanwhile, the influence of the replacement of a wearing part at a hydraulic end on the sensor is avoided, and the detection accuracy is improved.

Description

Fracturing pump detection method, system, equipment and storage medium

References to related applications

This disclosure claims the priority of the invention patent with the application number 202111566334.1 and the invention name "a fracturing pump detection method, system, equipment and storage medium" submitted to the State Intellectual Property Office of the People's Republic of China on December 20, 2021. Its entire contents are incorporated into this disclosure by reference.

field

The present disclosure generally relates to the technical field of fracturing equipment, and more specifically relates to a fracturing pump detection method, system, equipment and storage medium.

background

At present, after the production of an oil well reaches a certain stage, since the permeability of the unexploited crude oil in the oil well gradually decreases, it becomes difficult to extract the crude oil in the oil well, which in turn leads to a gradual decrease in the production of the oil well. In order to increase oil well production, oil wells need to be fractured. The fracturing operation mainly uses a fracturing pump to transport the liquid mixed with sand into the formation through extremely high pressure to improve the flow conditions of the crude oil in the oil well, making the crude oil in the oil well flow more easily and facilitate extraction. However, the liquid mixed with sand in the fracturing pump is prone to strong erosion on the fracturing pump body and the high and low pressure sealing parts, which in turn causes the fracturing pump to be prone to puncture leakage, jetting, bursting, etc. during use, seriously affecting on-site operations personnel safety. Therefore, when the fracturing pump is working, it is necessary to monitor and diagnose the working state of the high-pressure plunger pump of the fracturing pump.

overview

In a first aspect, the present disclosure provides a fracturing pump detection method, which includes:

Detecting the stress information of the tie rod of the fracturing pump through the power end sensor of the fracturing pump;

determining the fluid pressure information of the pump chamber of the fracturing pump according to the force information of the tie rod; and

The detection result of the fracturing pump is determined according to the liquid pressure information in the pump chamber and the plunger phase information corresponding to the force information of the pull rod.

In some embodiments, the power end sensor includes a stress sensor installed on the tie rod of the fracturing pump, and the force information of the tie rod of the fracturing pump is detected through the power end sensor of the fracturing pump, include:

Acquiring the stress information of the tie rod end detected by the stress sensor; and

Based on the stress information of the tie rod end and the preset cross-sectional area information of the tie rod end corresponding to the fracturing pump, the force information of the tie rod is determined.

In some embodiments, the power end sensor includes a strain sensor installed on the tie rod of the fracturing pump, and the force information of the tie rod of the fracturing pump is detected through the power end sensor of the fracturing pump, include:

obtaining the strain information of the tie rod end detected by the strain sensor; and

The force information of the tie rod is determined based on the strain information of the tie rod end, the elastic modulus information of the preset tie rod material corresponding to the fracturing pump, and the preset cross-sectional area information of the tie rod end corresponding to the fracturing pump.

In some embodiments, the determination of the pressure information of the pump cavity of the fracturing pump according to the force information of the tie rod includes:

Obtaining information on the cross-sectional area of the piston of the fracturing pump for the force information on the pull rod; and

The calculation process is performed based on the cross-sectional area information of the piston and the force information of the pull rod to obtain the liquid pressure information of the pump cavity of the fracturing pump.

In some embodiments, the determination of the detection result of the fracturing pump according to the liquid pressure information in the pump chamber and the plunger phase information corresponding to the force information of the pull rod includes:

Determining the plunger phase information corresponding to the force information of the pull rod;

Detecting whether the liquid pressure information in the pump chamber matches the plunger phase information;

If the liquid pressure information in the pump chamber matches the plunger phase information, then determine the liquid pressure information of the fracturing pump according to the liquid pressure information in the pump chamber and the plunger phase information; and

If the liquid pressure information of the fracturing pump does not meet the preset pressure threshold, an abnormal detection result of the fracturing pump is generated.

In some embodiments, the determining the liquid pressure information of the fracturing pump according to the liquid pressure information of the pump chamber and the phase information of the plunger includes:

If the plunger phase information is the first plunger phase information, then determine the first liquid pressure information of the fracturing pump according to the pump cavity liquid pressure information and the first plunger phase information; and

If the plunger phase information is the second plunger phase information, the second liquid pressure information of the fracturing pump is determined according to the pump cavity liquid pressure information and the second plunger phase information.

In some embodiments, after generating the abnormal detection result of the fracturing pump, it also includes:

Triggering an alarm feedback module to output alarm information based on the abnormality detection result; and

Wherein, if the liquid pressure information of the fracturing pump does not meet the preset pressure threshold, generating the abnormality detection result of the fracturing pump includes: if the first liquid pressure information does not meet the preset first a pressure information threshold, the first detection result of the fracturing pump generated based on the first fluid pressure information is abnormal; if the second fluid pressure information does not meet the preset second pressure information threshold, based on the The second detection result of the fracturing pump generated by the second hydraulic pressure information is abnormal.

In a second aspect, the present disclosure provides a fracturing pump detection system, which includes:

The tie rod force detection module is configured to detect the force information of the tie rod of the fracturing pump through the power end sensor of the fracturing pump;

A pump chamber liquid pressure information determination module configured to determine the pump chamber liquid pressure information of the fracturing pump according to the force information of the tie rod; and

The detection result determination module is configured to determine the detection result of the fracturing pump according to the liquid pressure information of the pump chamber and the plunger phase information corresponding to the force information of the pull rod.

In a third aspect, the present disclosure provides a fracturing pump detection system, which includes a processor, a communication interface, a memory, and a communication bus, wherein, the processor, the communication interface, and the memory complete mutual communication through the communication bus. Communication;

a memory configured to store a computer program;

The processor is configured to implement the fracturing pump detection method described in the present disclosure when executing the program stored in the memory.

In a fourth aspect, the present disclosure provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the fracturing pump detection method described in the present disclosure is implemented.

In some embodiments, the present disclosure detects the force information of the tie rod of the fracturing pump through the power end sensor of the fracturing pump, determines the pressure information of the pump chamber liquid of the fracturing pump according to the force information of the tie rod, and determines the pressure information of the pump cavity of the fracturing pump according to the force information of the pump chamber. The plunger phase information corresponding to the pressure information and the force information of the tie rod determines the detection result of the fracturing pump, cancels the process of traditional vibration sensor intermediate filtering and algorithm feature recognition, and solves the problem that the existing fracturing pump detection method uses traditional vibration Accelerators collect signals, so intermediate filtering and algorithmic feature recognition are required, which leads to the problem of complicated data analysis steps. At the same time, it avoids the impact of the replacement of consumable parts at the fluid end on the sensor, and improves the detection accuracy.

Brief description of the drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings without paying creative labor.

FIG. 1 is a schematic flowchart of a fracturing pump detection method provided by an embodiment of the present disclosure;

Fig. 2 is a schematic structural diagram of a fracturing pump provided by an embodiment of the present disclosure;

Fig. 3 is a schematic flowchart of steps of a fracturing pump detection method provided by an optional embodiment of the present disclosure;

Fig. 4 is a schematic diagram of a fracturing pump detection system provided by an embodiment of the present disclosure;

Fig. 5 is a structural block diagram of a fracturing pump detection system provided by an embodiment of the present disclosure; and

Fig. 6 is a schematic structural diagram of a fracturing pump detection device provided by an alternative embodiment of the present disclosure.

detail

In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments It is a part of embodiments of the present disclosure, but not all embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure.

In implementation, the detection sensor is mainly installed on the hydraulic end of the fracturing pump, for example, at least one sensor is installed on the upper or lower surface of the hydraulic end of the fracturing pump. However, the high-pressure and low-pressure valves inside the hydraulic end of the fracturing pump are vulnerable parts and often need to be replaced. When replacing, the upper and lower ends of the hydraulic end of the fracturing pump need to be removed. , because the sensor installed on the liquid end is easy to be knocked, resulting in damage to the sensor, increasing the cost of repair or replacement of the sensor.

One of the core concepts of the embodiments of the present disclosure is to provide a fracturing pump detection method. By installing the sensor on the power end of the fracturing pump, the force information of the tie rod of the fracturing pump is detected, so as to determine the pressure of the fracturing pump according to the force information of the tie rod. The detection result of the pump realizes the real-time detection of the fracturing pump, cancels the process of intermediate filtering and algorithm feature recognition of the traditional vibration sensor, and avoids the influence of the replacement of the vulnerable parts of the hydraulic end on the sensor, and improves the detection accuracy.

FIG. 1 is a schematic flow chart of a fracturing pump detection method provided in the present disclosure. As shown in Figure 1, the fracturing pump detection method provided by the present disclosure may include the following steps:

Step 110, detecting the stress information of the tie rod of the fracturing pump through the power end sensor of the fracturing pump;

Step 120, determining the fluid pressure information of the pump chamber of the fracturing pump according to the force information of the tie rod; and

Step 130: Determine the detection result of the fracturing pump according to the liquid pressure information in the pump chamber and the plunger phase information corresponding to the force information on the pull rod.

In some embodiments, the power end of the fracturing pump may refer to the end where the pull rod of the fracturing pump is connected to the plunger, and a sensor may be installed on the pull rod of the fracturing pump, such as a diaphragm type stress or strain sensor. There is no limit to this. When the fracturing pump is performing fracturing work, the tension data or thrust data of the fracturing pump rod can be determined according to the information fed back by the diaphragm stress or strain sensor, so that the tension data or thrust data can be used as the fracturing pump data. The force information of the tie rod.

In some embodiments, a plurality of stress or strain sensors can be respectively installed on the plurality of pull rods on the fracturing pump, and the stress or strain sensors can be installed on the end of the pull rod corresponding to each pump chamber of the fracturing pump close to the plunger, When the fracturing pump is performing fracturing work, the stress or strain sensor can collect the deformation data of the tie rod, so that the deformation data of the tie rod can be converted into stress or strain information. Furthermore, according to the stress or strain information, the push force or pull force on the pull rod can be obtained, for example, the push force on the pull rod when it is stretching out or the pull force on the pull rod when it is retracting can be obtained. It avoids damage to the seal of the hydraulic end of the fracturing pump. During the process of dismantling the liquid end, the sensor is damaged due to bumping, which reduces the risk of sensor being bumped during the dismantling process and repeated Risk of insufficient positioning accuracy.

In some embodiments, the stress or strain sensor is used to monitor the state data of the tie rod, the stress/strain information obtained is more accurate, the stress or strain signal is more stable, and it is not easily affected by other components, vibration, temperature, etc., and the signal capture High precision.

In some embodiments, after the force information of the tie rod is determined, the fluid pressure information of the pump chamber of the fracturing pump can be determined according to the force information of the tie rod. Specifically, the pull or thrust on the pull rod can be determined according to the force information on the pull rod, and the cross-sectional area of the fracturing pump plunger and the pull or push on the pull rod can be calculated to obtain the pump chamber liquid corresponding to the pull rod of the fracturing pump pressure information.

In actual processing, unique IP addresses can be set for the stress or strain sensors installed in the tie rods. For example, a group of stress or strain sensors can be installed at the horizontal and vertical positions of the tie rods respectively, and the two sets of stress or strain The sensor is set with a unique IP address. In the subsequent processing, it can be identified which sensor the collected stress or strain information belongs to, and the tie rod and installation position of the sensor can be identified, so that the obtained liquid pressure information of the pump chamber of the fracturing pump is more accurate .

It can be seen that the stress/strain information collected by the stress or strain sensor in the embodiment of the present disclosure can be directly converted into the liquid pressure information of the pump chamber without special algorithm identification and filtering, which simplifies the data analysis steps and improves the signal processing efficiency. Feedback of fracturing pump failures is more timely.

In some embodiments, the plunger phase information of the fracturing pump can be determined according to the extension or retraction movement of the pull rod, so that the detection of the fracturing pump can be determined based on the plunger phase information and the liquid pressure information in the pump chamber. result. In some embodiments, by identifying the stress or strain information of the pull rod, it can be determined whether the pull rod is currently in the extension or retraction movement, so that the plunger phase information of the fracturing pump can be obtained. If the pull rod is currently extending, the pressure information of the fluid discharged from the fracturing pump can be determined based on the phase information of the plunger and the fluid pressure information in the pump chamber. If the pull rod is currently retracting, the suction fluid pressure information of the fracturing pump can be determined based on the plunger phase information and the fluid pressure information in the pump chamber. Therefore, the detection result of the fracturing pump can be determined according to the pressure information of the discharge liquid of the fracturing pump and the pressure information of the suction liquid of the fracturing pump.

In some embodiments, as shown in FIG. 2 , the structural diagram of the fracturing pump 200, the tie rod 1 can be connected to the plunger 3, and the stress or strain sensor 2 can be installed on the corresponding tie rod of the fracturing pump chamber close to the plunger. one end. In some embodiments, the installation direction of the stress or strain sensor can be the axial direction of the tie rod, and a group of sensors can be respectively installed in the horizontal and vertical directions of the tie rod to collect the stress or strain information in the horizontal and vertical directions of the tie rod respectively , and the force information of the tie rod can be determined according to the collected stress or strain information, and then the liquid pressure information of the pump cavity of the fracturing pump can be determined according to the force information of the tie rod. For example, when the pull rod is extending, the thrust of the pull rod can be determined according to the stress or strain information, and the thrust of the pull rod can be used as the force information of the pull rod, and then the pressure of the fracturing pump’s discharge liquid can be determined based on the force information of the pull rod Information; when the pull rod is retracting, the tension on the pull rod can be determined according to the stress or strain information, and the tension on the pull rod can be used as the force information of the pull rod, and then the suction liquid of the fracturing pump can be determined according to the force information of the pull rod pressure information. In addition, at least one discharge pressure sensor 4 can also be installed at the high-pressure outlet end of the fracturing pump to collect pressure data at the high-pressure outlet end of the fracturing pump; at least one suction pressure sensor 5 can be installed at the low-pressure outlet end of the fracturing pump to collect pressure data. Pressure data at the low-pressure outlet of the split pump.

In some embodiments, after determining the pressure of the fracturing pump’s drainage fluid, the pressure information of the fracturing pump’s drainage fluid can be compared with the collected pressure data at the high-pressure outlet end of the fracturing pump, so that the pressure can be determined. In the same way, after determining the pressure information of the suction liquid of the fracturing pump, the pressure information of the suction liquid of the fracturing pump can be compared with the collected pressure data at the low-pressure outlet end of the fracturing pump, so that Confirmation of frac pump test results.

In some embodiments, during the reciprocating movement of the pull rod to extend and retract, when the pull rod is extended, the pull rod applies thrust to the plunger, at this time, the volume inside the fracturing pump decreases, and the fracturing pump pumps When the pull rod retracts, the pull rod exerts a pulling force on the plunger. At this time, the internal volume of the fracturing pump increases, and the pump cavity of the fracturing pump absorbs liquid. Based on the above principles, after collecting the stress or strain information corresponding to the stress or strain sensor of the tie rod, the stress or strain direction corresponding to the stress or strain information can be determined based on the stress or strain information, so that it can be determined whether the tie rod is in the extended state or in the In the retracted state, the plunger phase information can be determined according to the extended or retracted state data of the pull rod. In the case of a special failure in the pump chamber of the fracturing pump, for example, the special failure mode may be that the pump chamber of the fracturing pump only has abnormal fluid discharge or only abnormal liquid suction. The abnormal data is not obvious, so the abnormal discharge or suction may not be detected immediately, but the plunger phase information can timely and accurately determine the special failure, which greatly enhances the accuracy of fracturing pump monitoring.

Referring to FIG. 3 , it shows a schematic flowchart of the steps of a fracturing pump detection method provided by an alternative embodiment of the present disclosure. The fracturing pump detection method may include the following steps:

Step 310, detecting the force information of the tie rod of the fracturing pump through the power end sensor of the fracturing pump;

Step 320, according to the force information of the pull rod, obtain the cross-sectional area information of the piston of the fracturing pump;

Step 330, performing calculation processing based on the cross-sectional area information of the piston and the force information of the pull rod to obtain the liquid pressure information of the pump cavity of the fracturing pump;

Step 340, determining the plunger phase information corresponding to the force information of the pull rod;

Step 350, detecting whether the liquid pressure information in the pump chamber matches the plunger phase information;

Step 360, if the liquid pressure information of the pump chamber matches the phase information of the plunger, then determine the liquid pressure information of the fracturing pump according to the liquid pressure information of the pump chamber and the phase information of the plunger;

Step 370, if the liquid pressure information of the fracturing pump does not meet the preset pressure threshold, determine the abnormal detection result of the fracturing pump; and

Step 380, triggering the alarm feedback module to output alarm information based on the abnormality detection result.

In some embodiments, the power end sensor may include a stress sensor installed on the pull rod of the fracturing pump, and the detection of the force information of the fracturing pump by the power end sensor of the fracturing pump may include the following sub-steps :

Sub-step 3101, acquiring the stress information of the rod end detected by the stress sensor; and

Sub-step 3102, based on the stress information of the tie rod end and the preset cross-sectional area information of the tie rod end corresponding to the fracturing pump, determine the force information of the tie rod.

In some embodiments, if the sensor installed on the tie rod is a stress sensor, the deformation data of the tie rod can be obtained when the fracturing pump is performing fracturing work, and the deformation data can be converted into stress information at the end of the tie rod. The cross-sectional area of the tie rod end of the split pump is fixed, so the cross-sectional area of the tie rod end can be used as the preset cross-sectional area information of the tie rod end. Then, the stress information of the tie rod and the preset cross-sectional area information of the tie rod end corresponding to the fracturing pump can be calculated and processed, so that the force information of the tie rod can be determined.

In some embodiments, the tie rod end stress corresponding to the tie rod end stress information can be σ, and the tie rod end cross-sectional area corresponding to the preset tie rod end cross-sectional area information can be A1, then it can be obtained by the formula: F=σ*A1 The reasoning or pulling force F of the tie rod corresponding to the force information of the tie rod.

In some embodiments, the power end sensor may include a strain sensor installed on the tie rod of the fracturing pump, and the force information of the tie rod of the fracturing pump detected by the power end sensor of the fracturing pump may be Include the following sub-steps:

Sub-step 3103, obtaining the strain information of the rod end detected by the strain sensor; and

Sub-step 3104, based on the strain information of the tie rod end, the elastic modulus information of the preset tie rod material corresponding to the fracturing pump, and the preset cross-sectional area information of the tie rod end corresponding to the fracturing pump, determine the force on the tie rod information.

In some embodiments, if the sensor installed on the tie rod is a strain sensor, the deformation data of the tie rod can be obtained when the fracturing pump is performing fracturing work, and the deformation data can be converted into strain information at the end of the tie rod. Both the elastic modulus of the tie rod material of the fracture pump and the cross-sectional area of the tie rod end of the fracturing pump can be fixed, so the elastic modulus of the material at the tie rod end can be used as the preset elastic modulus information of the tie rod material, and the cross-sectional area of the tie rod end can be The area is used as the preset cross-sectional area information of the tie rod end. Then, the strain information of the tie rod, the elastic modulus information of the fracturing pump corresponding to the preset tie rod material, and the cross-sectional area information of the tie rod end corresponding to the fracturing pump can be calculated and processed, so that the force information of the tie rod can be determined.

In some embodiments, the strain at the tie rod end corresponding to the strain information at the tie rod end may be ε, the elastic modulus of the material at the tie rod end corresponding to the preset elastic modulus information of the tie rod material may be E, and the preset tie rod end cross-sectional area The cross-sectional area of the tie rod end corresponding to the information may be A1, then the reasoning or tension F of the tie rod corresponding to the force information of the tie rod can be obtained through the formula F=ε*E*A1.

In certain embodiments, the frac pump piston cross-sectional area information may be the frac pump plunger cross-sectional area. After determining the pulling force or pushing force on the pull rod, information on the liquid pressure in the pump chamber of the fracturing pump can be obtained based on the cross-sectional area of the fracturing pump plunger and the pulling or pushing force on the pull rod.

In some embodiments, the cross-sectional area of the plunger of the fracturing pump can be A2, and the pulling or pushing force on the pull rod can be F, then the formula: P=F/A2 can be used to obtain the liquid in the pump chamber of the fracturing pump Pressure information P.

In some embodiments, after determining the stress or strain information at the end of the tie rod, the stress or strain information can be identified, the stress or strain direction can be determined, and the current state of motion of the tie rod can be further determined based on the stress or strain direction, such as can be determined Whether the pull rod is extending or retracting, so that based on the current state of motion of the pull rod, it can be determined whether the force on the pull rod is a push force or a pull force.

In some embodiments, if the current state of motion of the pull rod is extension motion, it can be determined that the force on the pull rod is a push force. For another example, if the current motion state of the pull rod is a retraction motion, it can be determined that the force on the pull rod is a pull force. In the subsequent processing, the plunger phase information of the fracturing pump can be determined according to the extension or retraction movement of the pull rod, so that the fracturing pump’s Test results.

In some embodiments, after collecting the stress or strain information at the end of the tie rod, the tension or push force on the tie rod can be quickly obtained based on the stress or strain information, so that the preset compression force can be combined with the tension or push force on the tie rod. The cross-sectional area of the plunger of the fracturing pump can be used to obtain the liquid pressure information of the pump chamber of the fracturing pump. It does not require special algorithm identification or data filtering, nor does it require complicated and cumbersome data analysis and calculation. The data processing efficiency is high. Timely feedback can be provided in the event of a failure, realizing real-time detection of the fracturing pump and avoiding greater losses.

In some embodiments, the plunger phase information may be status data of extension or retraction of the drawbar. If the force on the pull rod corresponding to the pull rod force information is the pulling force, it can be determined that the pull rod is retracting, and the plunger phase information when the pull rod is retracting can be obtained; If the force is thrust, it can be determined that the pull rod is extending, and the plunger phase information when the pull rod is extending can be obtained.

In some embodiments, the state data of the pull rod fully extended in the extending motion or the state data of the pull rod fully retracted in the retracting motion may be used as plunger phase information. Specifically, the stress or strain information corresponding to the extension movement of the tie rod can be defined as negative, and the stress or strain information corresponding to the retraction movement of the tie rod can be defined as positive. After collecting the stress or strain information at the end of the tie rod, it can be judged whether the tie rod is extending or retracting according to the positive or negative signal contained in the stress or strain information. If the collected stress or strain information contains a positive signal, it can be determined that the pull rod is performing a retracting motion. If the collected stress or strain signal contains a negative signal, it can be determined that the pull rod is in an extension motion. When the collected stress or strain information changes from a positive signal to a negative signal, it can be determined that the pull rod has retracted to the maximum position and is ready to extend. At this time, it can be determined that the pull rod has been fully retracted, and the pull rod can be fully retracted. Status data as plunger phase information. When the collected stress or strain signal changes from a negative signal to a positive signal, the pull rod has been extended to the maximum position and is ready to be retracted. At this time, it can be determined that the pull rod has been fully extended, and the status data when the pull rod is fully extended as plunger phase information.

In some embodiments, pump cavity fluid pressure information can be matched with plunger phase information. If the movement state of the pull rod corresponding to the liquid pressure information in the pump chamber is extended, and the movement state of the pull rod corresponding to the plunger phase information is also extended, it can be determined that the liquid pressure information in the pump chamber matches the plunger phase information; if the liquid in the pump chamber If the movement state of the tie rod corresponding to the pressure information is retracted, and the movement state of the tie rod corresponding to the plunger phase information is also retracted, it can be determined that the liquid pressure information in the pump chamber matches the plunger phase information.

In addition, it may also be determined whether the movement state of the pull rod corresponding to the plunger phase information is fully extended or fully retracted. If the movement state of the pull rod corresponding to the liquid pressure information in the pump chamber is fully extended, and the movement state of the pull rod corresponding to the plunger phase information is also fully extended, it can be determined that the liquid pressure information in the pump chamber matches the plunger phase information; If the movement state of the pull rod corresponding to the cavity liquid pressure information is fully retracted, and the pull rod movement state corresponding to the plunger phase information is also fully retracted, it can be determined that the pump chamber liquid pressure information matches the plunger phase information.

In some embodiments, the fluid pressure information of the fracturing pump may include the pressure information of the discharge fluid of the fracturing pump and the pressure information of the suction fluid of the fracturing pump. If the liquid pressure information in the pump chamber matches the plunger phase information, and the movement state of the pull rod corresponding to the liquid pressure information in the pump chamber and the plunger phase information is extended, then it can be determined that the liquid pressure information of the fracturing pump is the displacement of the fracturing pump. Liquid pressure information. If the liquid pressure information in the pump chamber matches the plunger phase information, and the movement state of the pull rod corresponding to the liquid pressure information in the pump chamber and the plunger phase information is retracted, then it can be determined that the liquid pressure information of the fracturing pump is the suction value of the fracturing pump. Liquid pressure information.

In some embodiments, the determination of the liquid pressure information of the fracturing pump based on the liquid pressure information of the pump chamber and the phase information of the plunger may include the following sub-steps:

Sub-step 3601, if the plunger phase information is the first plunger phase information, then determine the first liquid pressure information of the fracturing pump according to the liquid pressure information of the pump chamber and the first plunger phase information ;as well as

Sub-step 3602, if the plunger phase information is the second plunger phase information, then determine the second liquid pressure information of the fracturing pump according to the liquid pressure information of the pump chamber and the second plunger phase information .

In some embodiments, the first plunger phase information may be state data when the pull rod is fully extended, and the second plunger phase information may be state data when the pull rod is fully retracted. The first liquid pressure information may be the pressure information of the discharge liquid of the fracturing pump, and the second liquid pressure information may be the pressure information of the suction liquid of the fracturing pump.

In some embodiments, it can be determined whether the pressure information of the suction liquid and the pressure information of the discharge liquid of the fracturing pump meet the preset pressure threshold, so as to determine whether the pressure information of the fracturing pump is in accordance with the pressure information of the suction liquid and the pressure of the discharge liquid. test results.

In some embodiments, a suction pressure sensor can be installed near the low-pressure liquid inlet of the fracturing pump to collect pressure information at the liquid inlet of the fracturing pump, and a discharge pressure sensor can be installed near the high-pressure liquid outlet of the fracturing pump , to collect the pressure information of the outlet of the fracturing pump. Then, the pressure information of the liquid suction liquid of the fracturing pump can be compared with the pressure information of the liquid inlet of the fracturing pump to obtain the pressure difference information of the liquid suction; The pressure information is compared to obtain the discharge pressure difference information. The suction pressure difference information or the liquid discharge pressure difference information can be compared with the preset pressure threshold to determine whether the suction pressure difference information or the liquid discharge pressure difference information meets the preset pressure threshold. Or in the case that the information on the pressure difference of the drainage does not meet the preset pressure threshold, determine the abnormal detection result of the fracturing pump. Specifically, two pressure thresholds may be preset, for example, the preset two pressure thresholds may be a high pressure threshold and a low pressure threshold. It may be to compare the suction pressure difference information with the preset high-pressure pressure threshold. If the suction pressure difference information is higher than the preset high-pressure pressure threshold, it can be determined that the fracturing pump is abnormal, and the abnormality may be the fracturing pump. Low pressure seal failure inside liquid end. Similarly, the discharge pressure difference information can be compared with the preset low-pressure pressure threshold. If the discharge pressure information is lower than the preset low-pressure pressure threshold, it can be determined that the fracturing pump is abnormal. The abnormality may be the fracturing pump. High pressure seal failure inside liquid end. Comparing the suction pressure difference information or discharge pressure difference information with the preset pressure threshold, according to the comparison results, the degree of internal seal failure of the fracturing pump can be intuitively understood, making the monitoring results more accurate.

In certain embodiments, FIG. 4 shows a schematic diagram of a fracturing pump detection system 500 provided by the present disclosure, which may include independent sensors and a remote monitoring platform. Among them, the independent sensor can include a signal acquisition module, a power supply module and a signal transmission module; the remote detection platform can include a signal receiving module and an operation panel, and the operation panel can include a data processing module, a threshold setting module and an alarm feedback module. In some embodiments, the signal acquisition module may include a diaphragm stress or strain sensor, a liquid suction pressure sensor and/or a liquid discharge pressure sensor, and the power supply module may be an independent battery, etc., which is not limited in this example. The power supply module can provide electric energy for the signal collection module and the signal transmission module, so that the signal collection module and the signal transmission module can enter the working state according to the electric energy provided by the power supply module. In some embodiments, stress or strain sensors can be installed in the axial direction of the tie rod, such as a set of sensors can be installed in the horizontal and vertical directions of the tie rod, and the suction pressure sensor can be installed in the low pressure inlet of the fracturing pump. Near the liquid port, the discharge pressure sensor can also be installed at the high-pressure outlet end of the fracturing pump, which is not limited in the present disclosure. By installing a set of stress or strain sensors in the horizontal and vertical directions of the tie rod, the signal acquisition module can collect the stress or strain information at the horizontal position and the vertical position of the tie rod respectively, and send the collected stress or strain information to the signal transmitter The module is used to trigger the signal transmitting module to send stress or strain information to the signal receiving module of the remote monitoring platform. For example, the signal transmitting module can be remotely wirelessly connected with the signal receiving module of the remote monitoring platform, so that the signal receiving module can receive the stress or strain information sent by the signal transmitting module. Then the signal receiving module can output the stress or strain information to the data processing module, so that the data processing module can determine the hydraulic pressure information of the fracturing pump according to the stress or strain information, and recognize that the tie rod is extending according to the stress or strain information It is still a retraction movement, and then the plunger phase information of the fracturing pump is obtained. In some embodiments, the data processing module can also match the liquid pressure information of the fracturing pump with the corresponding plunger phase information to obtain the suction liquid pressure information or the discharge liquid pressure information of the fracturing pump.

In addition, the signal acquisition module can also collect the pressure information of the inlet of the fracturing pump collected by the suction pressure sensor and the pressure information of the outlet of the fracturing pump collected by the discharge pressure sensor, through the signal transmitting module and the signal receiving module. The module sends to the data processing module. The data processing module can compare the pressure information of the suction liquid of the fracturing pump with the pressure information of the liquid inlet of the fracturing pump to obtain the pressure difference information of the suction liquid; By comparing the pressure information, the discharge pressure difference information is obtained. Then the data processing module can obtain the pressure threshold set by the threshold setting module. If the information on the fluid discharge pressure difference is lower than the pressure threshold or the suction pressure difference is higher than the pressure threshold, the data processing module can determine that the fracturing pump is abnormal and generate a pressure threshold. Anomaly detection results for cracked pumps. In subsequent processing, the data processing module can trigger the alarm feedback module to send out alarm information based on the abnormality detection result. For example, it can trigger the alarm feedback module to send out sound and light alarms, etc. This example does not limit this. To send an alarm to the staff to remind the staff, the staff can determine the abnormal information of the fracturing pump through the operation panel, such as determining the high pressure or low pressure leakage of the fracturing pump, etc. This example does not limit this. In addition, the staff can also realize the setting of the pressure threshold in the threshold setting module through the operation panel, such as adjusting the size of the pressure threshold.

In some embodiments, when the interior of the hydraulic end of the fracturing pump fails incipiently, such as microleakage or cracking, etc. may occur. The liquid in the pump chamber of the fracturing pump will flow out from the leak or crack, resulting in abnormal liquid pressure in the pump chamber. At this time, the plunger will feed back the abnormality to the pull rod, which is specifically manifested in the decrease of the thrust of the pull rod and the stress or reduced strain. The stress or strain information fed back by the stress or strain sensor will also change accordingly. Therefore, by combining the collected stress or strain information at the end of the tie rod with the phase information of the plunger, it is possible to quickly analyze whether the high-pressure seal or the low-pressure seal has failed, making the detection of the fracturing pump more timely and accurate.

In some embodiments, when the low-pressure seal at the hydraulic end of the fracturing pump fails, when the pull rod retracts, liquid enters the hydraulic end of the fracturing pump, and the plunger phase information is normal. When the pull rod is extended, the hydraulic end of the fracturing pump drains liquid. At this time, due to the leakage of the low-pressure seal, the hydraulic end of the fracturing pump cannot maintain a high normal value, the thrust received by the pull rod decreases, and the stress sensor detects The stress information of the tie rod will be reduced.

In some embodiments, when the high-pressure seal at the liquid end of the fracturing pump fails, when the pull rod is stretched out, the outlet end of the liquid end of the fracturing pump is drained. Since the liquid end of the fracturing pump is connected in series In the working chamber, the pressure of each discharge end is consistent, so the stress information detected by the stress sensor is normal when the pull rod is extended. When the pull rod retracts, the hydraulic end of the fracturing pump absorbs liquid. At this time, due to the leakage of the high-pressure seal, the higher pressure outside the liquid end of the fracturing pump will be transmitted to the pump chamber of the fracturing pump through the leak, resulting in The pressure in the pump chamber is higher than the normal value, and the pull rod is subjected to additional push force, and the pull force required for the pull rod to fully retract will be reduced. At this time, the stress information of the pull rod detected by the stress sensor will also be reduced.

In some embodiments, after the abnormal detection result of the fracturing pump is determined, the alarm feedback module can be triggered to send an alarm message based on the abnormal detection result, such as an audible and visual alarm to remind the staff that the fracturing pump is abnormal . This disclosure does not limit this.

In some embodiments, the first liquid pressure information may be liquid suction liquid pressure information, and the first pressure information threshold may be a high pressure pressure threshold; the second liquid pressure information may be discharge liquid pressure information, and the second pressure information threshold may be is the low pressure threshold, which is not limited by the present disclosure.

It can be seen that the embodiment of the present disclosure uses the power end sensor of the fracturing pump to detect the force information of the tie rod of the fracturing pump, and obtains the piston cross-sectional area information of the fracturing pump based on the force information of the tie rod, and based on the piston cross-sectional area information and The force information of the tie rod is calculated and processed to obtain the liquid pressure information of the pump chamber of the fracturing pump, so as to determine the plunger phase information corresponding to the force information of the tie rod, and check whether the liquid pressure information of the pump chamber matches the plunger phase information, so as to obtain When the liquid pressure information of the pump chamber matches the plunger phase information, the liquid pressure information of the fracturing pump is determined according to the liquid pressure information of the pump chamber and the plunger phase information. When the liquid pressure information of the fracturing pump does not meet the preset pressure threshold When the abnormal detection result of the fracturing pump is determined, and the alarm feedback module is triggered to output the alarm information based on the abnormal detection result, the process of intermediate filtering and algorithmic feature recognition of the traditional vibration sensor is canceled, and the existing fracturing pump detection method is solved due to the use of Traditional vibration accelerators collect signals, so intermediate filtering and algorithmic feature recognition are required, which leads to the problem of complicated data analysis steps. At the same time, it avoids the impact of the replacement of vulnerable parts at the fluid end on the sensor, and improves the detection accuracy.

It should be noted that, for the method embodiment, for the sake of simple description, it is expressed as a series of action combinations, but those skilled in the art should know that the embodiment of the present disclosure is not limited by the described action order, because According to the embodiments of the present disclosure, certain steps may be performed in other orders or simultaneously.

As shown in FIG. 5, the present disclosure provides a fracturing pump detection system 500, which includes;

The tie rod force detection module 510 is configured to detect the force information of the tie rod of the fracturing pump through the power end sensor of the fracturing pump;

The pump chamber liquid pressure information determination module 520 is configured to determine the pump chamber liquid pressure information of the fracturing pump according to the force information of the tie rod; and

The detection result determining module 530 is configured to determine the detection result of the fracturing pump according to the liquid pressure information in the pump chamber and the plunger phase information corresponding to the force information of the pull rod.

In some embodiments, after generating the abnormal detection result of the fracturing pump, it further includes:

It should be noted that the fracturing pump detection system provided in the embodiments of the present disclosure can execute the fracturing pump detection method provided in any embodiment of the present disclosure, and has the corresponding functions and beneficial effects of the method.

In some embodiments, the above-mentioned fracturing pump detection system can detect the force information of the pull rod through the power end sensor of the fracturing pump, so as to determine the detection result of the fracturing pump. The fracturing pump detection system may be composed of two or more physical entities, or may be composed of one physical entity. For example, the equipment may be a personal computer (Personal Computer, PC), a computer, a server, etc. The embodiment of the present disclosure is concerned with this Not specifically limited.

As shown in FIG. 6 , the present disclosure provides a fracturing pump detection device 600, which includes a processor 111, a communication interface 112, a memory 113, and a communication bus 114, wherein the processor 111, the communication interface 112, and the memory 113 pass through the communication bus 114 The mutual communication is completed; the memory 113 is used to store the computer program; the processor 111 is used to execute the program stored on the memory 113 to implement the steps of the fracturing pump detection method provided by any method embodiment of the present disclosure. In some embodiments, the steps of the fracturing pump detection method may include the following steps: detecting the force information of the tie rod of the fracturing pump through the power end sensor of the fracturing pump, and determining the force information of the tie rod according to the force information of the fracturing pump. The liquid pressure information of the pump chamber of the fracturing pump is used to determine the detection result of the fracturing pump according to the liquid pressure information of the pump chamber and the plunger phase information corresponding to the force information of the pull rod.

The present disclosure also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the fracturing pump detection method as provided in the present disclosure is implemented.

It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above descriptions are only specific implementation manners of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

A fracturing pump detection method, which includes:

Detecting the stress information of the tie rod of the fracturing pump through the power end sensor of the fracturing pump;

determining the fluid pressure information of the pump chamber of the fracturing pump according to the force information of the tie rod; and

The detection result of the fracturing pump is determined according to the liquid pressure information in the pump chamber and the plunger phase information corresponding to the force information of the pull rod.
The method according to claim 1, wherein the power end sensor includes a stress sensor installed on the pull rod of the fracturing pump, and the pressure of the fracturing pump is detected by the power end sensor of the fracturing pump. Tie rod force information, including:

Acquiring the stress information of the tie rod end detected by the stress sensor; and

Based on the stress information of the tie rod end and the preset cross-sectional area information of the tie rod end corresponding to the fracturing pump, the force information of the tie rod is determined.
The method according to claim 1 or 2, wherein the power end sensor includes a strain sensor installed on the tie rod of the fracturing pump, and the power end sensor of the fracturing pump detects the strain sensor of the fracturing pump The force information of the tie rod, including:

obtaining the strain information of the tie rod end detected by the strain sensor; and

The force information of the tie rod is determined based on the strain information of the tie rod end, the elastic modulus information of the preset tie rod material corresponding to the fracturing pump, and the preset cross-sectional area information of the tie rod end corresponding to the fracturing pump.
The method according to any one of claims 1 to 3, wherein said determining the pump chamber liquid pressure information of the fracturing pump according to the force information of the tie rod comprises:

Obtaining information on the cross-sectional area of the piston of the fracturing pump for the force information on the pull rod; and

The calculation process is performed based on the cross-sectional area information of the piston and the force information of the pull rod to obtain the liquid pressure information of the pump cavity of the fracturing pump.
The method according to any one of claims 1 to 4, wherein the detection of the fracturing pump is determined according to the information of the liquid pressure in the pump chamber and the phase information of the plunger corresponding to the force information of the pull rod. Results, including:

Determining the plunger phase information corresponding to the force information of the pull rod;

Detecting whether the liquid pressure information in the pump chamber matches the plunger phase information;

If the liquid pressure information in the pump chamber matches the plunger phase information, then determine the liquid pressure information of the fracturing pump according to the liquid pressure information in the pump chamber and the plunger phase information; and

If the liquid pressure information of the fracturing pump does not meet the preset pressure threshold, an abnormal detection result of the fracturing pump is generated.
The method according to claim 5, wherein the determining the liquid pressure information of the fracturing pump according to the liquid pressure information of the pump chamber and the phase information of the plunger comprises:

If the plunger phase information is the first plunger phase information, then determine the first liquid pressure information of the fracturing pump according to the pump cavity liquid pressure information and the first plunger phase information; and

If the plunger phase information is the second plunger phase information, the second liquid pressure information of the fracturing pump is determined according to the pump cavity liquid pressure information and the second plunger phase information.
The method according to claim 6, wherein, after generating the abnormal detection result of the fracturing pump, further comprising:

Triggering an alarm feedback module to output alarm information based on the abnormality detection result; and

Wherein, if the liquid pressure information of the fracturing pump does not meet the preset pressure threshold, generating the abnormality detection result of the fracturing pump includes: if the first liquid pressure information does not meet the preset first a pressure information threshold, the first detection result of the fracturing pump generated based on the first fluid pressure information is abnormal; if the second fluid pressure information does not meet the preset second pressure information threshold, based on the The second detection result of the fracturing pump generated by the second hydraulic pressure information is abnormal.
Fracturing pump detection system, which includes:

The pull rod force detection module is used to detect the force information of the tie rod of the fracturing pump through the power end sensor of the fracturing pump;

A pump chamber liquid pressure information determination module, configured to determine the pump chamber liquid pressure information of the fracturing pump according to the force information of the tie rod; and

The detection result determination module is configured to determine the detection result of the fracturing pump according to the liquid pressure information in the pump chamber and the plunger phase information corresponding to the force information of the pull rod.
Fracturing pump detection equipment, which includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory complete mutual communication through the communication bus;

a memory configured to store a computer program;

The processor is configured to implement the fracturing pump detection method according to any one of claims 1 to 7 when executing the program stored in the memory.
A computer-readable storage medium, on which a computer program is stored, wherein, when the computer program is executed by a processor, the fracturing pump detection method according to any one of claims 1 to 7 is implemented.