Sand control methods, apparatuses, and oilfield machines

Abstract

The present application relates to the field of oil machinery, and provides a sand adding control method and device and oil machinery, the method comprises the following steps: obtaining the current discharge of multiple sand mixing devices respectively; determining the target sand concentration of each sand mixing device based on the current discharge of each sand mixing device and the required sand concentration of a fracturing device; wherein each sand mixing device is used for sand adding for the fracturing device; and sending the target sand concentration to the corresponding sand mixing device for sand concentration adjustment by the sand mixing device. The present application realizes dynamic distribution and centralized control of the sand adding amount of each sand mixing device, so that the requirement for sand concentration in the fracturing construction process can be effectively met through sand adding by multiple sand mixing devices simultaneously.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil machinery, and in particular to a sand adding control method and device and oil machinery. BACKGROUND

[0002] In the fracturing operation, with the development of fracturing technology, the liquid supply pressure demand of the sand mixing equipment is higher and higher. In order to meet the liquid supply pressure demand, the process method of using double sand mixing trucks for liquid supply has developed rapidly, especially in shale gas fracturing, using double sand mixing trucks for liquid supply has become a common process method.

[0003] The existing double sand mixing truck liquid supply method usually adopts a double liquid supply mode of "sand adding + liquid pumping", that is, a sand mixing truck is used for sand mixing and sand adding, and another sand mixing truck is used for sand mixing and liquid supply. However, with the gradual increase of the demand for sand concentration in the fracturing process, the double liquid supply mode of "sand adding + liquid pumping" cannot meet the demand for sand concentration in the fracturing process. SUMMARY

[0004] The present application provides a sand adding control method and device and oil machinery to solve the defect that the prior art cannot meet the demand for sand concentration in the fracturing process, realizes dynamic allocation and centralized control of the sand adding amount of each sand mixing equipment, and can effectively meet the demand for sand concentration in the fracturing process.

[0005] The present application provides a sand adding control method, comprising:

[0006] Respectively acquiring the current discharge capacity of a plurality of sand mixing equipment;

[0007] Based on the current discharge capacity of each sand mixing equipment and the required sand concentration of the fracturing equipment, the target sand concentration of each sand mixing equipment is determined; wherein each sand mixing equipment is used for sand adding for the fracturing equipment;

[0008] The target sand concentration is sent to the corresponding sand mixing equipment for sand concentration adjustment by the sand mixing equipment.

[0009] According to the sand adding control method provided by the present application, the target sand concentration of each sand mixing equipment is determined based on the current discharge capacity of each sand mixing equipment and the required sand concentration of the fracturing equipment, comprising:

[0010] Based on the current discharge capacity of each sand mixing equipment and the required sand concentration of the fracturing equipment, the required sand delivery amount of the fracturing equipment is determined;

[0011] Based on the required sand delivery amount of the fracturing equipment, the target sand delivery amount of each sand mixing equipment is determined;

[0012] determine a target sand concentration of the sand mixing device based on a target sand delivery amount of the sand mixing device and a current delivery amount of the sand mixing device.

[0013] According to the sand adding control method provided by the application, the required sand delivery amount of the fracturing device is determined based on the current delivery amount of each sand mixing device and the required sand concentration of the fracturing device, and the method comprises the following steps:

[0014] determine the current delivery amount of the fracturing device based on the current delivery amount of each sand mixing device;

[0015] determine the required sand delivery amount of the fracturing device based on a preset first corresponding relationship and the current delivery amount of the fracturing device, the required sand concentration of the fracturing device and the sand density, wherein the first corresponding relationship is used to represent the corresponding relationship between the required sand delivery amount and the current delivery amount of the fracturing device, the required sand concentration and the sand density.

[0016] According to the sand adding control method provided by the application, the sand density comprises apparent density and true density.

[0017] The first corresponding relationship is obtained by the following method:

[0018] determine the first corresponding relationship based on the corresponding relationship between the required sand concentration of the fracturing device, the required sand weight of the fracturing device and the volume of a preset solvent;

[0019] wherein the required sand weight is determined based on the required sand delivery amount and the apparent density, the volume of the preset solvent is determined based on the current delivery amount of the fracturing device and the sand volume, and the sand volume is determined based on the required sand weight and the true density.

[0020] According to the sand adding control method provided by the application, the target sand delivery amount of each sand mixing device is determined based on the required sand delivery amount of the fracturing device, and the method comprises the following steps:

[0021] determine the target sand delivery amount of the sand mixing device based on a preset sand adding ratio of the sand mixing device and the required sand delivery amount of the fracturing device, wherein the sum of the preset sand adding ratios of each sand mixing device is 1.

[0022] According to the sand adding control method provided by the application, the target sand concentration of the sand mixing device is determined based on the target sand delivery amount of the sand mixing device and the current delivery amount of the sand mixing device, and the method comprises the following steps:

[0023] determine the target sand concentration of the sand mixing device based on the preset second correspondence relationship and the target sand delivery amount of the sand mixing device, the current discharge amount of the sand mixing device and the sand density; wherein the second correspondence relationship is used to represent the corresponding relationship between the target sand concentration and the target sand delivery amount, the current discharge amount of the sand mixing device and the sand density.

[0024] According to the sand adding control method provided by the application, the sand mixing device is adjusted in sand concentration by the following method:

[0025] determine the change amount of the working parameter of the sand delivery device in the sand mixing device based on the current sand concentration and the target sand concentration of the sand mixing device;

[0026] determine the target value of the working parameter based on the current value of the working parameter and the change amount of the working parameter;

[0027] control the sand delivery device to perform parameter adjustment based on the target value of the working parameter.

[0028] The application further provides a sand adding control device, comprising:

[0029] a data acquisition module, used to acquire the current discharge amount of a plurality of sand mixing devices respectively;

[0030] a data processing module, used to determine the target sand concentration of each sand mixing device based on the current discharge amount of each sand mixing device and the required sand concentration of a fracturing device; wherein each sand mixing device is used to add sand to the fracturing device;

[0031] a data sending module, used to send the target sand concentration to the corresponding sand mixing device, so that the sand mixing device adjusts the sand concentration.

[0032] The application further provides a petroleum machine, comprising a fracturing device, a plurality of sand mixing devices and the sand adding control device as described above; wherein each sand mixing device is used to add sand to the fracturing device.

[0033] The application further provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor; when the processor executes the program, the sand adding control method as described above is realized.

[0034] The sand adding control method, device and petroleum machinery provided by the application can obtain the current discharge of multiple sand mixing devices, determine the target sand concentration of each sand mixing device based on the current discharge of each sand mixing device and the required sand concentration of the fracturing device, and send the target sand concentration to the corresponding sand mixing device, so that the sand mixing device can adjust the sand concentration, the dynamic distribution and centralized control of the sand adding amount of each sand mixing device are realized, and the sand concentration requirement in the fracturing construction process can be effectively met by simultaneously adding sand through multiple sand mixing devices. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0036] Figure 1 is a flowchart of the sand adding control method provided by the application;

[0037] Figure 2 is a flowchart of determining the target sand concentration of each sand mixing device provided by the application;

[0038] Figure 3 is a flowchart of the sand concentration adjustment of the sand mixing device provided by the application;

[0039] Figure 4 is a structural diagram of the sand adding control device provided by the application;

[0040] Figure 5 is a structural diagram of the electronic device provided by the application. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the application more clear, the technical solutions in the application will be described clearly and completely in combination with the drawings in the application. Obviously, the described embodiments are some embodiments of the application, not all embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative effort belong to the protection scope of the application.

[0042] The sand adding control method of the application will be described below. Figures 1 to 3 The sand adding control method of the application is executed by the electronic device such as the controller or the hardware and / or software therein. As shown in Figure 1 The sand adding control method provided by the application at least includes:

[0043] S101, respectively obtaining the current discharge of multiple sand mixing devices.

[0044] S102, determine a target sand concentration of each of the sand mixing devices based on the current discharge of each of the sand mixing devices and the required sand concentration of the fracturing device; wherein each of the sand mixing devices is used to sand the fracturing device.

[0045] S103, send the target sand concentration to the corresponding sand mixing device for sand concentration adjustment by the sand mixing device.

[0046] In this embodiment, the sand mixing device is used to mix the preset solvent with the sand to obtain the sand-carrying liquid, and output the sand-carrying liquid to the fracturing device to realize sanding of the fracturing device. The preset solvent can be proppant or water. The number of sand mixing devices can be set according to the construction requirements, which can be two or more than two, and multiple sand mixing devices can be used to sand the fracturing device simultaneously. It should be noted that the number of sand mixing devices used for sanding in this embodiment is multiple, and it can also include sand mixing devices used for night pumping. The sanding control method of this embodiment only involves controlling the sand mixing devices for sanding, that is, the sand mixing devices mentioned in this embodiment are all used for sanding.

[0047] During the fracturing construction process, the current discharge of each sand mixing device can be obtained in real time. The current discharge of the sand mixing device is the discharge of the sand mixing device at the current time, which represents the volume of sand-carrying liquid output to the fracturing device per unit time, which can be detected by the flow sensor arranged in the sand mixing device. The discharge of the sand mixing device can be changed in real time according to the required discharge of the fracturing device.

[0048] The required sand concentration of the fracturing device can be pre-set, for example, the required sand concentration can be set according to the current working condition of the fracturing device. The target sand concentration of the sand mixing device is the target value of the sand concentration of the sand-carrying liquid output by the sand mixing device. Due to the differences in available sand amount and discharge of each sand mixing device, it is impossible to ensure that the sand concentration of each sand mixing device is consistent with the required sand concentration of the fracturing device. Therefore, the target sand concentration of each sand mixing device can be determined according to the required sand concentration of the fracturing device and the current discharge of each sand mixing device. The sand-carrying liquid output by each sand mixing device to the fracturing device is combined and used for fracturing construction, which realizes dynamic allocation and centralized control of the sanding amount of each sand mixing device, thereby effectively meeting the demand for sand concentration during the fracturing construction process.

[0049] The specific method for determining the target sand concentration of each sand mixing device based on the current discharge of each sand mixing device and the required sand concentration of the fracturing device can be set according to actual needs. For example, the required sand delivery amount of the fracturing device can be determined based on the current discharge of each sand mixing device and the required sand concentration of the fracturing device, and the target sand delivery amount of each sand mixing device can be determined according to the required sand delivery amount of the fracturing device, so as to determine the target sand concentration of the sand mixing device according to the target sand delivery amount and the current discharge of the sand mixing device. The required sand delivery amount refers to the sum of the volumes of sand in the sand-carrying fluid that needs to be input into the fracturing device by each sand mixing device per unit time. The sand concentration of the sand mixing device corresponding to the current discharge of the sand mixing device and the required sand concentration of the fracturing device can also be obtained according to the corresponding relationship between the sand concentration of the sand mixing device, the discharge of the sand mixing device and the required sand concentration of the fracturing device, and used as the target sand concentration of the sand mixing device.

[0050] After the target sand concentrations of the sand mixing devices are determined, the target sand concentrations can be sent to the corresponding sand mixing devices respectively, so that the sand mixing devices can adjust the sand concentrations, thereby realizing the synchronous control of multiple sand mixing devices and further meeting the requirements for sand concentration in the fracturing construction process.

[0051] The existing method for supplying liquid to the double sand mixing trucks usually adopts a double-liquid-supply mode of “sand adding + liquid pumping”, that is, a fracturing construction mode in which sand mixing and sand adding are performed by one sand mixing truck and sand mixing and liquid pumping are performed by the other sand mixing truck. However, as the requirements for sand concentration in the fracturing process gradually increase, the double-liquid-supply mode of “sand adding + liquid pumping” cannot meet the requirements for sand concentration in the fracturing construction process.

[0052] The embodiment obtains the current discharges of multiple sand mixing devices, determines the target sand concentrations of the sand mixing devices based on the current discharges of the sand mixing devices and the required sand concentration of the fracturing device, and sends the target sand concentrations to the corresponding sand mixing devices, so that the sand mixing devices can adjust the sand concentrations, thereby realizing the dynamic allocation and centralized control of the sand adding amounts of the sand mixing devices, and effectively meeting the requirements for sand concentration in the fracturing construction process through sand adding by multiple sand mixing devices at the same time.

[0053] Meanwhile, the two sand mixing trucks in the existing double sand mixing truck are controlled separately, which cannot guarantee the synchronism of the operations of the two sand mixing trucks, thereby causing large fluctuations in the sand concentration and failing to guarantee the operation effect of the fracturing construction.

[0054] The embodiment of the application dynamically allocates and centrally controls the sand adding amounts of the sand mixing devices based on the required sand concentration of the fracturing device, guarantees the synchronism of the sand adding operations of multiple sand mixing devices, thereby effectively guaranteeing the stability of the sand concentration of the sand-carrying fluid after the sand-carrying fluids output by multiple sand mixing devices are combined, and further improving the operation effect of the fracturing construction.

[0055] In the example embodiment, as shown in FIG. 1, the sand-carrying fluid is pumped into the fracturing device through the sand mixing truck 1 and the sand mixing truck 2. Figure 2As shown, the target sand concentration of each of the sand mixing devices is determined based on the current discharge of each of the sand mixing devices and the required sand concentration of the fracturing device, including:

[0056] S201, determining the required sand delivery volume of the fracturing device based on the current discharge of each of the sand mixing devices and the required sand concentration of the fracturing device.

[0057] S202, determining the target sand delivery volume of each of the sand mixing devices based on the required sand delivery volume of the fracturing device.

[0058] S203, determining the target sand concentration of the sand mixing device based on the target sand delivery volume of the sand mixing device and the current discharge of the sand mixing device.

[0059] In this embodiment, the required sand delivery volume of the fracturing device is the sum of the volume of sand in the sand-carrying fluid input by each sand mixing device to the fracturing device per unit time. The specific way of determining the required sand delivery volume of the fracturing device based on the current discharge of the sand mixing device and the required sand concentration of the fracturing device can be set according to actual needs. For example, the current discharge of the fracturing device can be determined based on the current discharge of each sand mixing device, and the required sand delivery volume of the fracturing device can be calculated based on the current discharge of the fracturing device and the required sand concentration of the fracturing device. The current discharge of the fracturing device and the required sand concentration of the fracturing device can also be matched based on the correspondence among the current discharge of the fracturing device, the required sand concentration of the fracturing device, and the required sand delivery volume of the fracturing device to obtain the required sand delivery volume of the fracturing device.

[0060] The target sand delivery volume of the sand mixing device is the target value of the volume of sand contained in the sand-carrying fluid output by the sand mixing device per unit time. The specific way of determining the target sand delivery volume of each sand mixing device based on the required sand delivery volume of the fracturing device can be set according to actual needs. For example, the required sand delivery volume of the fracturing device can be evenly distributed to each sand mixing device, or the required sand delivery volume of the fracturing device can be distributed to each sand mixing device according to a preset distribution ratio.

[0061] For any sand mixing device in the plurality of sand mixing devices, the target sand concentration of the sand mixing device can be determined based on the target sand delivery volume and the current discharge of the sand mixing device. For example, the target sand concentration of the sand mixing device can be calculated based on the target sand delivery volume and the current discharge of the sand mixing device, or the target sand delivery volume and the current discharge of the sand mixing device can be matched according to the correspondence among the sand concentration, the sand delivery volume, and the discharge of the sand mixing device to obtain the target sand concentration of the sand mixing device.

[0062] The embodiment determines the required sand delivery amount of the fracturing equipment based on the current delivery amount of each sand mixing equipment and the required sand concentration of the fracturing equipment, determines the target sand delivery amount of each sand mixing equipment based on the required sand delivery amount of the fracturing equipment, and determines the target sand concentration of the sand mixing equipment based on the target sand delivery amount and the current delivery amount of the sand mixing equipment, so that the sand concentration of each sand mixing equipment can be dynamically allocated according to the required sand concentration of the fracturing equipment, and the accuracy of the determination result of the target sand concentration of the sand mixing equipment is ensured, thereby effectively meeting the requirement for sand concentration in the fracturing construction process.

[0063] In the example embodiment, the determination of the required sand delivery amount of the fracturing equipment based on the current delivery amount of each sand mixing equipment and the required sand concentration of the fracturing equipment comprises:

[0064] determining the current delivery amount of the fracturing equipment based on the current delivery amount of each sand mixing equipment;

[0065] determining the required sand delivery amount of the fracturing equipment based on a preset first corresponding relationship and the current delivery amount of the fracturing equipment, the required sand concentration of the fracturing equipment, and the sand density, wherein the first corresponding relationship is used to represent the corresponding relationship between the required sand delivery amount and the current delivery amount of the fracturing equipment, the required sand concentration of the fracturing equipment, and the sand density.

[0066] In the embodiment, the current delivery amount of the fracturing equipment can be obtained by summing the current delivery amount of each sand mixing equipment in the process of determining the current delivery amount of the fracturing equipment based on the current delivery amount of each sand mixing equipment. The current delivery amount of the fracturing equipment is the volume of the sand-carrying fluid discharged by the fracturing equipment in a unit of time at the current time during the fracturing construction.

[0067] The first corresponding relationship is used to represent the corresponding relationship between the required sand delivery amount of the fracturing equipment and the current delivery amount of the fracturing equipment, the required sand concentration of the fracturing equipment, and the sand density, which can be a mapping table or a mathematical model. The first corresponding relationship can be obtained and stored in advance so as to be called at any time during the determination of the required sand delivery amount of the fracturing equipment.

[0068] When the first corresponding relationship is a mapping table, the current delivery amount of the fracturing equipment, the required sand concentration of the fracturing equipment, and the sand density can be matched based on the first corresponding relationship to obtain the required sand delivery amount of the fracturing equipment. When the first corresponding relationship is a mathematical model, the current delivery amount of the fracturing equipment, the required sand concentration of the fracturing equipment, and the sand density can be input into the first corresponding relationship to calculate the required sand delivery amount of the fracturing equipment.

[0069] The embodiment determines the current displacement of the fracturing equipment based on the current displacement of the sand mixing equipment, and determines the required sand delivery amount of the fracturing equipment based on the preset first correspondence relationship and the current displacement of the fracturing equipment, the required sand concentration of the fracturing equipment and the sand density, so that the required sand delivery amount of the fracturing equipment can be quickly and accurately obtained, and the real-time and effectiveness of sand adding control are ensured.

[0070] In the example embodiment, the sand density includes apparent density and true density.

[0071] The first correspondence relationship is obtained by the following method:

[0072] The first correspondence relationship is determined based on the correspondence relationship among the required sand concentration of the fracturing equipment, the required sand weight of the fracturing equipment and the volume of the preset solvent.

[0073] The required sand weight is determined based on the required sand delivery amount and the apparent density, the volume of the preset solvent is determined based on the current displacement of the fracturing equipment and the sand volume, and the sand volume is determined based on the required sand weight and the true density.

[0074] In the embodiment, the sand density can include apparent density and true density. The apparent density is the ratio of the sand weight to the volume of the sand pile, where the volume of the sand pile includes the sum of the true volumes of all sand particles and the internal pore volume of the sand pile. The true density is the ratio of the sand weight to the sum of the true volumes of all sand particles.

[0075] When the first correspondence relationship is a mathematical model, the first correspondence relationship can be determined based on the correspondence relationship among the required sand concentration of the fracturing equipment, the required sand weight of the fracturing equipment and the volume of the preset solvent. The required sand concentration of the fracturing equipment can be the ratio of the required sand weight to the volume of the preset solvent. The required sand weight can be determined based on the required sand delivery amount and the apparent density, for example, the product of the required sand delivery amount and the apparent density can be taken as the required sand weight. The volume of the preset solvent can be determined based on the current displacement of the fracturing equipment and the sand volume. The sand volume is the sum of the true volumes of all sand particles in the required sand delivery amount, and the ratio of the required sand weight to the true density can be taken as the sand volume. After the sand volume is obtained, the difference between the current displacement of the fracturing equipment and the sand volume can be taken as the volume of the preset solvent.

[0076] As an optional implementation, the first correspondence relationship can be as shown in formula (1):

[0077]

[0078] In the formula, n is the number of sand mixing equipment; P i is the target sand delivery amount of the i-th sand mixing equipment, is the required sand delivery amount of the fracturing equipment; Fi is the current displacement of the i-th sand mixing device, is the current displacement of the fracturing device; ZC is the required sand concentration of the fracturing device; SM and TM are the apparent density and the true density of the sand, respectively.

[0079] The first correspondence is determined based on a correspondence between the required sand concentration of the fracturing device, the required sand weight of the fracturing device, and the volume of the preset solvent, which can effectively ensure the effectiveness of the determination result of the first correspondence, and further ensure the effectiveness of the required sand delivery amount obtained according to the first correspondence, thereby effectively meeting the requirement for sand concentration in the fracturing construction process.

[0080] In an example embodiment, the determining of the target sand delivery amount of each sand mixing device based on the required sand delivery amount of the fracturing device comprises:

[0081] The target sand delivery amount of each sand mixing device is determined based on a preset sand delivery ratio of the sand mixing device and the required sand delivery amount of the fracturing device, and the sum of the preset sand delivery ratios of all the sand mixing devices is 1.

[0082] In this embodiment, the preset sand delivery ratio of the sand mixing device is the ratio of the sand delivery amount of the sand mixing device to the required sand delivery amount of the fracturing device. The preset sand delivery ratio can be set by an operator in advance and input to the controller. For example, the sand delivery ratio of each sand mixing device can be determined based on the available sand amount of each sand mixing device, the device performance of each sand mixing device, and the like. After obtaining the required sand delivery amount of the fracturing device, the target sand delivery amount of any sand mixing device in the plurality of sand mixing devices can be determined based on the sand delivery ratio corresponding to the sand mixing device and the required sand delivery amount of the fracturing device. For example, the product of the sand delivery ratio corresponding to the sand mixing device and the required sand delivery amount of the fracturing device can be taken as the target sand delivery amount of the sand mixing device, so as to dynamically adjust the sand delivery amount of each sand mixing device according to the actual working condition of each sand mixing device, thereby ensuring the effectiveness of the work of each sand mixing device and having high flexibility.

[0083] It can be understood that the sum of the sand delivery ratios of all the sand mixing devices is 1, so that the sand-carrying fluid output by all the sand mixing devices can effectively meet the requirement for sand concentration in the fracturing construction process.

[0084] In this embodiment, the target sand delivery amount of each sand mixing device is determined based on the preset sand delivery ratio of the sand mixing device and the required sand delivery amount of the fracturing device, and the sum of the preset sand delivery ratios of all the sand mixing devices is 1, so as to effectively ensure the effectiveness of the work of each sand mixing device while meeting the requirement for sand concentration of the fracturing device, and having high flexibility.

[0085] In an example embodiment, the determining of the target sand concentration of the sand mixing device based on the target sand delivery amount of the sand mixing device and the current displacement of the sand mixing device comprises:

[0086] determine the target sand concentration of the sand mixing device based on the preset second correspondence relationship and the target sand delivery amount of the sand mixing device, the current discharge amount of the sand mixing device and the sand density.

[0087] In this embodiment, the second correspondence relationship is used to represent the correspondence between the target sand concentration of the sand mixing device and the target sand delivery amount of the sand mixing device, the current discharge amount of the sand mixing device and the sand density, which can be a mapping table or a mathematical model. The second correspondence relationship can be obtained and stored in advance, so that it can be called at any time during the determination of the target sand concentration of the sand mixing device.

[0088] When the second correspondence relationship is a mapping table, the target sand delivery amount of the sand mixing device, the current discharge amount of the sand mixing device and the sand density can be matched based on the second correspondence relationship to obtain the target sand concentration of the sand mixing device. When the second correspondence relationship is a mathematical model, the target sand delivery amount of the sand mixing device, the current discharge amount of the sand mixing device and the sand density can be input into the second correspondence relationship to calculate the target sand concentration of the sand mixing device.

[0089] As an optional embodiment, the second correspondence relationship can be as shown in formula (2):

[0090]

[0091] In the formula, C i is the target sand concentration of the i-th sand mixing device.

[0092] In this embodiment, the target sand concentration of the sand mixing device is determined based on the preset second correspondence relationship and the target sand delivery amount of the sand mixing device, the current discharge amount of the sand mixing device and the sand density, so that the target sand concentration of each sand mixing device can be quickly and accurately obtained, and the real-time performance and effectiveness of the sand adding control are further improved.

[0093] In an exemplary embodiment, as shown in Figure 3 the sand mixing device is adjusted in sand concentration by the following method:

[0094] S301, based on the current sand concentration and the target sand concentration of the sand mixing device, determine the change amount of the working parameter of the sand delivery device in the sand mixing device.

[0095] S302, based on the current value of the working parameter and the change amount of the working parameter, determine the target value of the working parameter.

[0096] S303, based on the target value of the working parameter, control the sand delivery device to perform parameter adjustment.

[0097] In this embodiment, for any sand mixing device in the plurality of sand mixing devices, after receiving the target sand concentration sent by the controller, the sand conveying device in the sand mixing device can be adjusted in parameter based on the target sand concentration, so that the sand-carrying fluid output by the sand mixing device meets the corresponding target sand concentration. The sand conveying device is a device for inputting sand in the sand mixing device, for example, it can be an auger, and the working parameter of the sand conveying device can be the rotating speed of the auger.

[0098] The current sand concentration of the sand mixing device is the sand concentration of the sand-carrying fluid output by the sand mixing device at the current time. After determining the current sand concentration and the target sand concentration of the sand mixing device, the change amount of the working parameter of the sand conveying device in the sand mixing device can be determined based on the current sand concentration and the target sand concentration of the sand mixing device. For example, the current sand concentration and the target sand concentration of the sand mixing device can be input into a PD (Proportional Differential) control module to output the change amount of the working parameter of the sand conveying device in real time through the PD control module.

[0099] The current value of the working parameter of the sand conveying device is the value of the working parameter of the sand conveying device at the current time. The target value of the working parameter of the sand conveying device can be determined based on the current value of the working parameter of the sand conveying device and the corresponding change amount of the working parameter, and the sand conveying device can be controlled in real time according to the target value of the working parameter to adjust the parameter, so that the sand-carrying fluid output by the sand mixing device meets the corresponding target sand concentration, thereby effectively meeting the demand for sand concentration in the fracturing construction process.

[0100] The sand adding control device provided by the present application is described below, and the sand adding control device described below can be referred to each other corresponding to the sand adding control method described above. As shown in Figure 4 The sand adding control device provided by the present application at least includes:

[0101] The data acquisition module 401 is configured to acquire the current discharge of each sand mixing device.

[0102] The data processing module 402 is configured to determine the target sand concentration of each sand mixing device based on the current discharge of each sand mixing device and the demand sand concentration of the fracturing device, wherein each sand mixing device is configured to add sand to the fracturing device.

[0103] The data sending module 403 is configured to send the target sand concentration to the corresponding sand mixing device for sand concentration adjustment.

[0104] In an exemplary embodiment, the data processing module 402 is specifically configured to:

[0105] determine the required sand delivery amount of the fracturing equipment based on the current delivery amount of each of the sand mixing equipment and the required sand concentration of the fracturing equipment;

[0106] determine the target sand delivery amount of each of the sand mixing equipment based on the required sand delivery amount of the fracturing equipment;

[0107] determine the target sand concentration of the sand mixing equipment based on the target sand delivery amount of the sand mixing equipment and the current delivery amount of the sand mixing equipment.

[0108] In an example embodiment, the data processing module 402 is specifically configured to:

[0109] determine the current delivery amount of the fracturing equipment based on the current delivery amount of each of the sand mixing equipment;

[0110] determine the required sand delivery amount of the fracturing equipment based on the first preset corresponding relationship, the current delivery amount of the fracturing equipment, the required sand concentration of the fracturing equipment and the sand density; wherein the first preset corresponding relationship is used to represent the corresponding relationship between the required sand delivery amount and the current delivery amount of the fracturing equipment, the required sand concentration and the sand density.

[0111] In an example embodiment, the sand density includes apparent density and true density; and the model construction module is further configured to:

[0112] determine the first preset corresponding relationship based on the corresponding relationship between the required sand concentration of the fracturing equipment, the required sand weight of the fracturing equipment and the volume of the preset solvent;

[0113] wherein the required sand weight is determined based on the required sand delivery amount and the apparent density; the volume of the preset solvent is determined based on the current delivery amount of the fracturing equipment and the sand volume; and the sand volume is determined based on the required sand weight and the true density.

[0114] In an example embodiment, the data processing module 402 is specifically configured to:

[0115] determine the target sand delivery amount of each of the sand mixing equipment based on the preset sand adding ratio of each of the sand mixing equipment and the required sand delivery amount of the fracturing equipment; wherein the sum of the preset sand adding ratios of each of the sand mixing equipment is 1.

[0116] In an example embodiment, the data processing module 402 is specifically configured to:

[0117] determine a target sand concentration of the sand mixing device based on the second correspondence relationship and the target sand delivery amount, the current discharge amount of the sand mixing device and the sand density; wherein the second correspondence relationship is used to represent a corresponding relationship between the target sand concentration and the target sand delivery amount, the current discharge amount of the sand mixing device and the sand density.

[0118] In the example embodiment, the sand mixing device is specifically used for:

[0119] determine a change amount of a working parameter of a sand delivery device in the sand mixing device based on the current sand concentration and the target sand concentration of the sand mixing device;

[0120] determine a target value of the working parameter based on a current value of the working parameter and the change amount of the working parameter;

[0121] control the sand delivery device to perform parameter adjustment based on the target value of the working parameter.

[0122] Based on any one of the above embodiments, the present application further provides a petroleum machine, comprising a fracturing device, a plurality of sand mixing devices and the sand adding control device according to any one of the above embodiments; wherein each of the sand mixing devices is used to add sand for the fracturing device.

[0123] In the embodiment, the petroleum machine can be a fracturing truck, such as a truck-mounted fracturing truck, a semi-trailer fracturing truck or a skid-mounted fracturing truck.

[0124] Figure 5 An example of a schematic diagram of a physical structure of an electronic device is shown in Figure 5 The electronic device can include a processor 501, a communications interface 502, a memory 503 and a communications bus 504, wherein the processor 501, the communications interface 502 and the memory 503 complete mutual communication through the communications bus 504. The processor 501 can invoke a logical instruction in the memory 503 to execute a sand adding control method, which includes: acquiring a current discharge amount of each of a plurality of sand mixing devices respectively;

[0125] determine a target sand concentration of each of the sand mixing devices based on the current discharge amount of each of the sand mixing devices and a required sand concentration of the fracturing device; wherein each of the sand mixing devices is used to add sand for the fracturing device;

[0126] send the target sand concentration to the corresponding sand mixing device, so that the sand mixing device performs sand concentration adjustment.

[0127] Further, the logic instructions in the memory 503 described above can be implemented in the form of software functional units and sold or used as independent products, and can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0128] In another aspect, the present application also provides a computer program product, which comprises a computer program stored on a non-transitory computer readable storage medium, and the computer program comprises program instructions, when the program instructions are executed by a computer, the computer can execute the sand control method provided by the above-mentioned methods, and the method comprises: respectively acquiring current discharges of a plurality of sand mixing devices;

[0129] Based on the current discharges of the sand mixing devices and the required sand concentration of the fracturing device, target sand concentrations of the sand mixing devices are determined; wherein each of the sand mixing devices is used for sanding the fracturing device;

[0130] The target sand concentrations are sent to the corresponding sand mixing devices for sand concentration adjustment by the sand mixing devices.

[0131] In another aspect, the present application also provides a non-transitory computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the sand control method provided by the above-mentioned methods, and the method comprises: respectively acquiring current discharges of a plurality of sand mixing devices;

[0132] Based on the current discharges of the sand mixing devices and the required sand concentration of the fracturing device, target sand concentrations of the sand mixing devices are determined; wherein each of the sand mixing devices is used for sanding the fracturing device;

[0133] The target sand concentrations are sent to the corresponding sand mixing devices for sand concentration adjustment by the sand mixing devices.

[0134] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed to multiple network units. Part or all of the modules can be selected to achieve the purposes of the embodiments according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0135] Through the description of the above embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software and the necessary general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0136] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for controlling sand addition, characterized in that, include: Obtain the current discharge volume of multiple sand mixing devices respectively; Based on the current discharge rate of each sand mixing device and the required sand concentration of the fracturing equipment, the target sand concentration of each sand mixing device is determined; wherein, each sand mixing device is used to add sand to the fracturing equipment; Sending the target sand concentration to the corresponding sand mixing equipment for sand concentration adjustment, wherein determining the target sand concentration for each sand mixing equipment based on the current discharge rate of each sand mixing equipment and the required sand concentration of the fracturing equipment includes: The required sand delivery rate of the fracturing equipment is determined based on the current discharge rate of each of the sand mixing devices and the required sand concentration of the fracturing equipment. The target sand delivery rate of each sand mixing device is determined based on the required sand delivery rate of the fracturing equipment. The target sand concentration of the sand mixing equipment is determined based on the target sand delivery rate and the current discharge rate of the sand mixing equipment; the determination of the target sand concentration of the sand mixing equipment based on the target sand delivery rate and the current discharge rate of the sand mixing equipment includes: Based on the preset second correspondence and the target sand delivery rate of the sand mixing equipment, the current discharge rate of the sand mixing equipment, and the sand density, the target sand concentration of the sand mixing equipment is determined; wherein, the second correspondence is used to characterize the correspondence between the target sand concentration and the target sand delivery rate, the current discharge rate of the sand mixing equipment, and the sand density.

2. The sand addition control method according to claim 1, characterized in that, The determination of the required sand delivery rate of the fracturing equipment based on the current discharge rate of each of the sand mixing devices and the required sand concentration of the fracturing equipment includes: The current discharge rate of the fracturing equipment is determined based on the current discharge rate of each of the sand mixing equipment. Based on a preset first correspondence and the current discharge rate of the fracturing equipment, the required sand concentration and sand density of the fracturing equipment, the required sand delivery rate of the fracturing equipment is determined; wherein, the first correspondence is used to characterize the correspondence between the required sand delivery rate and the current discharge rate of the fracturing equipment, the required sand concentration and the sand density.

3. The sand addition control method according to claim 2, characterized in that, The sand density includes apparent density and true density; The first correspondence was obtained through the following method: The first correspondence is determined based on the correspondence between the required sand concentration of the fracturing equipment, the required sand weight of the fracturing equipment, and the volume of the preset solvent; Wherein, the required sand weight is determined based on the required sand delivery rate and the apparent density; the preset solvent volume is determined based on the current discharge rate of the fracturing equipment and the sand volume; and the sand volume is determined based on the required sand weight and the true density.

4. The sand addition control method according to claim 1, characterized in that, The determination of the target sand delivery rate for each sand mixing device based on the required sand delivery rate of the fracturing equipment includes: Based on the preset sand addition ratio of the sand mixing equipment and the required sand delivery rate of the fracturing equipment, the target sand delivery rate of the sand mixing equipment is determined; wherein, the sum of the preset sand addition ratios of each sand mixing equipment is 1.

5. The sand addition control method according to any one of claims 1 to 4, characterized in that, The sand mixing equipment adjusts the sand concentration using the following method: Based on the current sand concentration and target sand concentration of the sand mixing equipment, determine the change in the operating parameters of the sand conveying device in the sand mixing equipment; Based on the current value of the operating parameter and the amount of change of the operating parameter, determine the target value of the operating parameter; The sand conveying device is controlled to adjust its parameters based on the target values ​​of the operating parameters.

6. A sand-addition control device for the method of claim 1, characterized in that, include: The data acquisition module is used to acquire the current discharge volume of multiple sand mixing devices. The data processing module is used to determine the target sand concentration of each sand mixing device based on the current discharge rate of each sand mixing device and the required sand concentration of the fracturing equipment; wherein each sand mixing device is used to add sand to the fracturing equipment. The data transmission module is used to send the target sand concentration to the corresponding sand mixing equipment so that the sand mixing equipment can adjust the sand concentration.

7. A type of petroleum machinery, characterized in that, include: The fracturing equipment, multiple sand mixing equipment, and the sand addition control device as described in claim 6; wherein each of the sand mixing equipment is used to add sand to the fracturing equipment.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the sand-addition control method as described in any one of claims 1 to 5.

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