CN216922095U - Fracturing control equipment - Google Patents

Abstract

The application provides a fracturing control equipment relates to oil and gas exploitation technical field, solves the control of adding the chemical agent at present, for the manual control of operation scene manual work, can appear controlling untimely technical problem. In the fracturing control equipment, a first chemical agent storage tank is connected with a first conveying pump, and a material outlet of the first conveying pump is communicated with a first position of a first fracturing fluid conveying pipeline; an outlet of the first fracturing fluid conveying pipeline is communicated with an inlet of a fracturing pump, an outlet of the fracturing pump is communicated with an inlet of a second fracturing fluid conveying pipeline, and a first flow detection element is arranged at a second position of the second fracturing fluid conveying pipeline; the first delivery pump is connected with a first output interface of the controller, and the first flow detection element is connected with a first input interface of the controller. The fracturing control device provided by the application is used for adding a chemical agent into a fracturing fluid.

Description

Fracturing control equipment

Technical Field

The application relates to the technical field of oil and gas exploitation, in particular to fracturing control equipment.

Background

In the fracturing process, in order to meet the technological requirements and improve the fracturing effect, a chemical agent is generally required to be added into the fracturing fluid.

However, the control of the chemical agent addition in the related art is manually controlled in a working site, and the problem of untimely control inevitably occurs in the control mode.

SUMMERY OF THE UTILITY MODEL

The utility model provides fracturing control equipment which can be used for solving the technical problem that the existing control for adding a chemical agent is manual control in an operation field, and the control is not timely.

The embodiment of the application provides a fracturing control device, which comprises a first chemical agent storage tank, a first delivery pump, a fracturing pump, a first flow detection element, a first fracturing fluid delivery pipeline, a second fracturing fluid delivery pipeline and a controller, wherein the first chemical agent storage tank is connected with the first delivery pump;

the first chemical agent storage tank is connected with the first conveying pump, and a material outlet of the first conveying pump is communicated with a first position of the first fracturing fluid conveying pipeline; an outlet of the first fracturing fluid conveying pipeline is communicated with an inlet of the fracturing pump, an outlet of the fracturing pump is communicated with an inlet of the second fracturing fluid conveying pipeline, and the first flow detection element is arranged at a second position of the second fracturing fluid conveying pipeline; the first delivery pump is connected with a first output interface of the controller, and the first flow detection element is connected with a first input interface of the controller.

Optionally, in one embodiment, the fracturing control apparatus further comprises a display device having an input; the display device is connected with the second input interface of the controller, and the display device is connected with the second output interface of the controller.

Optionally, in an embodiment, the fracturing control equipment further comprises a control mode information acquisition device; the control mode information acquisition device is connected with a third input interface of the controller.

Optionally, in an embodiment, the fracturing control equipment further includes a fault information collecting device; and the fault information acquisition device is connected with a fourth input interface of the controller.

Optionally, in one embodiment, the fracture control apparatus further comprises an alarm device; and the alarm device is connected with a third output interface of the controller.

Optionally, in one embodiment, the fracture control apparatus further comprises a second flow detection element; and a material outlet of the first conveying pump is communicated with a first position of the first fracturing fluid conveying pipeline through the second flow detection element, and the second flow detection element is connected with a fifth input interface of the controller.

Optionally, in one embodiment, the fracturing control apparatus further comprises a first valve; the first chemical agent storage tank is connected with the first delivery pump through the first valve, and the first valve is connected with a fourth output interface of the controller.

Optionally, in one embodiment, the fracturing control apparatus further comprises a second chemical storage tank and a second delivery pump; the second chemical agent storage tank is connected with the second conveying pump, and a material outlet of the second conveying pump is communicated with a third position of the first fracturing fluid conveying pipeline; the second delivery pump is connected with a fifth output interface of the controller.

Optionally, in one embodiment, the fracturing control apparatus further comprises a third flow sensing element and a second valve; a material outlet of the second conveying pump is communicated with a third position of the first fracturing fluid conveying pipeline through a third flow detection element, and the third flow detection element is connected with a sixth input interface of the controller; the second chemical agent storage tank is connected with the second delivery pump through the second valve, and the second valve is connected with a sixth output interface of the controller.

Optionally, in one embodiment, the fracturing pump is interfaced with a seventh output of the controller.

The utility model has the following beneficial effects:

by adopting the fracturing control equipment provided by the embodiment of the application, the fracturing control equipment comprises a first chemical agent storage tank, a first delivery pump, a fracturing pump, a first flow detection element, a first fracturing fluid delivery pipeline, a second fracturing fluid delivery pipeline and a controller; the first chemical agent storage tank is connected with the first conveying pump, and a material outlet of the first conveying pump is communicated with a first position of the first fracturing fluid conveying pipeline; an outlet of the first fracturing fluid conveying pipeline is communicated with an inlet of the fracturing pump, an outlet of the fracturing pump is communicated with an inlet of the second fracturing fluid conveying pipeline, and the first flow detection element is arranged at a second position of the second fracturing fluid conveying pipeline; the first delivery pump is connected with a first output interface of the controller, and the first flow detection element is connected with a first input interface of the controller; make the controller can gather the fracturing fluid discharge capacity that the fracturing pump that first flow detection element detected and obtained pumped to control first delivery pump according to the fracturing fluid discharge capacity that the fracturing pump pumped, and then adjust the chemical agent flow of first delivery pump pumping, realize the adjustment to the chemical agent addition in the fracturing fluid, thereby can avoid the technical staff to go the operation scene and carry out artifical manual control, realize the timely control to the chemical agent addition.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts. In the drawings:

1-1 and 1-2 are schematic structural diagrams of a fracturing control device provided by an embodiment of the application;

fig. 2 is a schematic structural diagram of another fracturing control device provided by an embodiment of the present application;

fig. 3 is a schematic structural diagram of another fracturing control device provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of another fracturing control device provided by an embodiment of the present application;

fig. 5 is a schematic structural diagram of another fracturing control device provided by an embodiment of the present application;

6-1 and 6-2 are schematic structural diagrams of still another fracture control device provided by the embodiment of the application;

7-1 and 7-2 are schematic structural diagrams of still another fracture control device provided by the embodiment of the application;

8-1 and 8-2 are schematic structural diagrams of still another fracture control device provided by the embodiment of the application;

fig. 9 is a schematic structural diagram of another fracturing control device provided by an embodiment of the present application;

10-1 and 10-2 are schematic structural diagrams of still another fracture control device provided by the embodiment of the application;

fig. 11 is a schematic flowchart of a control method according to an embodiment of the present application;

fig. 12 is a schematic flowchart of another control method according to an embodiment of the present application.

Reference numerals:

10-a fracture control device; 101-a first chemical agent storage tank; 102 — a first delivery pump; 103-fracturing pump; 104 — a first flow sensing element; 105-a first fracturing fluid conveying pipeline; 106-a second fracturing fluid conveying pipeline; 107-a controller; 108 — a display device; 109-control mode information acquisition means; 110-fault information acquisition means; 111-an alarm device; 112 — a second flow sensing element; 113 — a first valve; 114-a second chemical agent storage tank; 115 — a second delivery pump; 116 — a third flow detection element; 117 — a second valve; 118-liquid supply means.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As described in the background of the present application, the control of chemical agent addition in the related art is manually performed in a working site, and the problem of untimely control inevitably occurs in such a control manner.

In view of the above, the present embodiment provides a fracturing control device 10, as shown in fig. 1-1 and fig. 1-2, the fracturing control device 10 includes a first chemical storage tank 101, a first delivery pump 102, a fracturing pump 103, a first flow rate detection element 104, a first fracturing fluid delivery line 105, a second fracturing fluid delivery line 106, and a controller 107; the first chemical agent storage tank 101 is connected with the first conveying pump 102, and a material outlet of the first conveying pump 102 is communicated with a first position A of the first fracturing fluid conveying pipeline 105; an outlet of the first fracturing fluid conveying pipeline 105 is communicated with an inlet of the fracturing pump 103, an outlet of the fracturing pump 103 is communicated with an inlet of the second fracturing fluid conveying pipeline 106, and the first flow detection element 104 is arranged at a second position B of the second fracturing fluid conveying pipeline 106; the first feed pump 102 is connected to a first output port Y1 of the controller 107, and the first flow rate detection element 104 is connected to a first input port X1 of the controller 107.

The first chemical agent storage tank 101 may store a chemical agent, which may be a thickener, a cross-linking agent, a fluid loss additive, a pH adjuster, or the like. The first chemical reservoir 101 is connected to a first delivery pump 102 and can be used to provide chemical feed to the first delivery pump 102.

The material outlet of the first delivery pump 102 is communicated with the first position a of the first fracturing fluid delivery pipe 105, and can provide power for delivering the chemical agent in the first chemical agent storage tank 101 into the first fracturing fluid delivery pipe 105, so that the chemical agent is mixed with the fracturing fluid delivered in the first fracturing fluid delivery pipe 105. The first feed pump 102 is connected to the first output interface Y1 of the controller 107, and specifically, a power element of the first feed pump 102 may be connected to the first output interface Y1 of the controller 107. The controller 107 may output commands to adjust the operating state of the power element to control the first delivery pump 102, and thus the flow rate of the chemical agent pumped by the first delivery pump 102 (for example, when the first delivery pump 102 is a rotor pump, the flow rate of the chemical agent pumped may be controlled by controlling the rotation speed). In practical applications, the first delivery pump 102 may be a plunger pump, a rotor pump, a centrifugal pump, etc., and the power element may be an engine, an electric motor, a hydraulic power takeoff, etc.

The inlet of the fracturing pump 103 is communicated with the outlet of the first fracturing fluid conveying pipeline 105, and the outlet of the fracturing pump 103 is communicated with the inlet of the second fracturing fluid conveying pipeline 106, so that power for conveying the fracturing fluid (including the fracturing fluid without the chemical agent or the fracturing fluid with the chemical agent) conveyed in the first fracturing fluid conveying pipeline 105 to the second fracturing fluid conveying pipeline 106 can be provided, and power for pumping the fracturing fluid in the second fracturing fluid conveying pipeline 106 into a shaft for fracturing operation can be further provided. In practical applications, the fracturing pump 103 may be a plunger pump, a rotor pump, a centrifugal pump, or the like.

The first flow detecting element 104 is arranged at the second position B of the second fracturing fluid conveying pipeline 106, and it can be understood that the first flow detecting element 104 is arranged at the outlet of the fracturing pump 103 and can detect the displacement of the fracturing fluid pumped by the fracturing pump 103. The first flow detection element 104 is connected with the first input interface X1 of the controller 107, and the controller 107 can collect the displacement of the fracturing fluid pumped by the fracturing pump 103, which is detected by the first flow detection element 104. In practical applications, the first flow sensing element 104 may be a flow meter.

It can be understood that, according to the fracturing control device 10 provided in this embodiment of the present application, the first delivery pump 102 is connected to the first output interface Y1 of the controller 107, and the first flow detection element 104 is connected to the first input interface X1 of the controller 107, so that the controller 107 can collect the displacement of the fracturing fluid pumped by the fracturing pump 103 detected by the first flow detection element 104, and control the first delivery pump 102 according to the displacement of the fracturing fluid pumped by the fracturing pump 103, and further adjust the flow of the chemical agent pumped by the first delivery pump 102, so as to adjust the addition amount of the chemical agent in the fracturing fluid, thereby avoiding a technician going to a working site to perform manual control, and realizing timely control of the addition amount of the chemical agent.

Further, the controller 107 may include a memory, where the memory may store a proportional relationship between the chemical agent flow rate and the fracturing fluid displacement preset by a technician, for example, twenty percent, and the controller 107 may determine a target chemical agent flow rate corresponding to the current fracturing fluid displacement value according to the fracturing fluid displacement detected by the first flow detection element 104 in real time and the proportional relationship stored in the memory, so as to adjust the chemical agent flow rate pumped by the first delivery pump 102 in real time to the target chemical agent flow rate.

In practice, the controller 107 may be located at a location remote from the job site to facilitate remote control of the addition of the chemical agent and to avoid the risk of manual control at the job site to the personal safety of the operator. The connection of the controller 107 to other devices may be a wired connection or a wireless connection.

For flexible control of the first delivery pump 102, in one embodiment, the fracturing control apparatus 10 provided by the embodiments of the present application further includes a display device 108 having an input; as shown in fig. 2, the display device 108 is connected to the second input interface X2 of the controller 107, and the display device 108 is connected to the second output interface Y2 of the controller 107.

The display device 108 has an input end, which may be a keyboard, a mouse, or a touch display screen of the display device 108. The display device 108 is connected with the second input interface X2 of the controller 107, and the display device 108 is connected with the second output interface Y2 of the controller 107, the controller 107 can display the acquired data on the display device 108, a technician can input a control instruction through the display device 108 and send the control instruction to the controller 107, and the controller 107 can output an instruction to control other devices according to the control instruction. In the foregoing embodiment, the proportional relationship between the chemical agent flow and the fracturing fluid displacement stored in the memory of the controller 107 may be pre-input by the technician via the display device 108.

It can be understood that, by the above solution, the controller 107 controls the first delivery pump according to the displacement of the fracturing fluid pumped by the fracturing pump, which may be controlled according to the displacement of the fracturing fluid detected by the first flow detecting element 104 and the proportional relationship stored in the memory; or the displacement of the fracturing fluid may be transmitted to the display device 108 for display, a technician inputs a control instruction, such as increasing the addition amount of a chemical agent or decreasing the addition amount of the chemical agent, through the display device 108 according to the displayed displacement of the fracturing fluid, and then the controller 107 controls the first delivery pump 102 according to the control instruction; thereby enabling flexible control of the first delivery pump 102.

Further, in an implementation manner, the fracturing control apparatus 10 provided by the embodiment of the present application further includes a control mode information collecting device 109, as shown in fig. 3, where the control mode information collecting device 109 is connected to the third input interface X3 of the controller 107.

Wherein the control mode may include a manual control mode, an automatic control mode, and the like.

The control mode information acquiring device 109 may acquire a control mode input by a technician, and the control mode information acquiring device 109 may be specifically a key, a selector (such as an alternative selector), or the like. For example, when the control mode information acquisition device 109 is an alternative selector, a technician may select one of the manual control mode and the automatic control mode through the alternative selector.

When the control mode acquired by the control mode information acquisition device 109 is a manual control mode, a technician may input a control instruction through the display device 108 according to the fracturing fluid displacement displayed by the display device 108, for example, setting the chemical agent addition amount, the chemical agent flow rate pumped by the first delivery pump 102, and the like, and then the controller 107 controls the chemical agent flow rate pumped by the first delivery pump 102 according to the control instruction. In practical applications, a technician may directly rotate a flow adjusting knob to control the first delivery pump 102 according to the fracturing fluid displacement displayed by the display device 108, wherein the flow adjusting knob may be rotated to change the chemical agent flow pumped by the first delivery pump 102, and the flow adjusting knob may be remotely connected to the first delivery pump 102. When the control mode acquired by the control mode information acquisition device 109 is an automatic control mode, the controller 107 may determine the target chemical agent addition amount corresponding to the current fracturing fluid displacement value according to the fracturing fluid displacement detected by the first flow detection element 104 and the proportional relationship stored in the memory, and further adjust the chemical agent flow rate pumped by the first delivery pump 102 according to the target chemical agent addition amount.

It can be understood that, with the above-mentioned scheme, after the control mode acquired by the control mode information acquisition device 109 is acquired, the corresponding control process is performed, so that the error control on the first delivery pump 102 can be avoided. For example, in the automatic control mode, the technician mistakenly touches the display device 108 to input the control command, and in the above-mentioned scheme, after the technician selects the manual control mode, the controller 107 will respond to the control command input by the technician through the display device 108, so that, in the automatic control mode, the technician mistakenly touches the display device 108 to input the control command, and the misoperation of the first delivery pump 102 is not caused.

Further, the fracturing control equipment 10 provided by the embodiment of the present application further includes a fault information acquisition device 110; as shown in fig. 4, the fault information collecting device 110 is connected to a fourth input interface X4 of the controller 107.

The fault information collecting device 110 may collect fault information of each pipeline and each device, and may specifically collect fault information of pressure, temperature, speed, and components. For example, the fault information collecting device 110 may be a plurality of pressure detecting elements, which may be disposed in the pipeline, or disposed on the first delivery pump 102 or the fracturing pump 103, and when the pressure detecting elements detect that the pipeline, the first delivery pump 102 or the fracturing pump 103 is in overpressure, overpressure information may be sent to the controller 107. It should be understood that the pressure detecting element of the fault information collecting device 110 is only an example (a temperature detecting element and the like may also be used), and the embodiment of the present application does not specifically limit the type and the setting position of the fault information collecting device 110.

It can be understood that, by the above scheme, the fault information collection device 110 is provided, and the fault information collection device 110 is connected to the fourth input interface X4 of the controller 107, so that the controller 107 can obtain fault information, and after the fault is solved, the flow rate of the chemical agent pumped by the first delivery pump 102 is adjusted. Further, fault information may be displayed on the display device 108 to prompt the technician for a particular fault location, fault cause, etc.

Further, in one implementation, the fracturing control device 10 provided by the embodiment of the present application further includes an alarm device 111; as shown in fig. 5, the alarm device 111 is connected to the third output interface Y3 of the controller 107.

The alarm device 111 may be used to send information to warn technicians when the fault information is collected by the fault information collection device 110. The alarm device 111 may comprise a warning light and/or a buzzer.

It can be understood that, by the above scheme, the alarm device 111 is provided, and the alarm device 111 is connected to the third output interface Y3 of the controller 107, so that after the controller 107 obtains the fault information collected by the fault information collection device 110, the controller can further control the alarm device 111 to alarm, so as to remind a technician to eliminate the fault as soon as possible.

In order to further accurately adjust the adding amount of the chemical agent according to the displacement of the fracturing fluid pumped by the fracturing pump 103 detected by the first flow detection element 104, in one embodiment, the fracturing control device 10 provided by the embodiment of the present application further includes a second flow detection element 112; as shown in fig. 6-1 and 6-2, the material outlet of the first conveying pump 102 is communicated with the first position a of the first fracturing fluid conveying pipeline 105 through the second flow detection element 112, and the second flow detection element 112 is connected with the fifth input interface X5 of the controller 107.

Wherein the second flow detecting element 112 can be used for detecting the flow of the chemical agent delivered into the first fracturing fluid delivery pipe 105 by the first delivery pump 102. Further, the process that the controller 107 detects the displacement of the fracturing fluid pumped out by the fracturing pump 103 according to the first flow detection element 104 and the flow rate of the chemical agent delivered into the first fracturing fluid delivery pipe 105 by the first delivery pump 102 according to the second flow detection element 112, and adjusts the chemical agent addition according to the automatic control mode may be:

firstly, determining whether the flow of the chemical agent conveyed by the first conveying pump 102 is matched with the displacement of the fracturing fluid pumped by the fracturing pump 103 or not according to the displacement of the fracturing fluid pumped by the fracturing pump 103 detected by the first flow detection element 104, the flow of the chemical agent conveyed into the first fracturing fluid conveying pipeline 105 by the first conveying pump 102 detected by the second flow detection element 112 and the ratio of the flow of the chemical agent to the displacement of the fracturing fluid prestored in the controller 107, and if not, executing the second step; and if so, executing the third step.

In the second step, the first delivery pump 102 is controlled to adjust the flow rate of the chemical agent pumped by the first delivery pump 102.

And thirdly, ending.

In addition, the process that the controller 107 adjusts the added chemical agent based on the displacement of the fracturing fluid pumped by the fracturing pump 103 detected by the first flow detection element 104 and the flow rate of the chemical agent delivered into the first fracturing fluid delivery pipeline 105 by the first delivery pump 102 detected by the second flow detection element 112, and based on the hand control mode, may be:

step 1, receiving chemical agent addition set flow input by technicians according to the displacement of the fracturing fluid pumped out by the fracturing pump 103.

Wherein the technician can input the chemical addition set flow rate through the display device 108.

In step 2, the first delivery pump 102 is controlled to adjust the flow rate of the chemical agent pumped by the first delivery pump 102.

Step 3, determining whether the flow rate of the chemical agent conveyed by the first conveying pump 102 is matched with the input chemical agent addition set flow rate, and if not, executing the step 2; if so, executing the step 4.

And 4, finishing.

It can be understood that, by the above scheme, the controller 107 is connected with the second flow detection element 112 for detecting the flow rate of the chemical agent conveyed into the first fracturing fluid conveying pipeline 105 by the first conveying pump 102, so that the controller 107 can accurately control the first conveying pump 102 according to the displacement of the fracturing fluid pumped by the fracturing pump 103 and the flow rate of the chemical agent conveyed into the first fracturing fluid conveying pipeline 105 by the first conveying pump 102, and further the addition amount of the chemical agent reaches the expected amount to meet the requirements of the fracturing operation.

To enable matching chemical flow rates with fracturing fluid displacement, in one embodiment, the fracturing control apparatus 10 provided by the embodiments of the present application further comprises a first valve 113; as shown in fig. 7-1 and 7-2, the first chemical reservoir 101 is connected to the first delivery pump 102 via the first valve 113, and the first valve 113 is connected to the fourth output port Y4 of the controller 107.

The first valve 113 is a valve with an adjustable opening degree, and may be a proportional valve. The greater the opening of the first valve 113, the more chemical is delivered from the first chemical storage tank 101 to the first delivery pump 102; conversely, the smaller the opening degree of the first valve 113, the less chemical is delivered from the first chemical storage tank 101 to the first delivery pump 102.

It can be understood that, by the above solution, the first valve 113 is connected to the fourth output interface Y4 of the controller 107, so that the controller 107 can control the opening degree of the first valve 113 according to the target flow rate of the chemical agent corresponding to the displacement of the fracturing fluid or according to the chemical agent addition set flow rate input by a technician, and further, the chemical agent flow rate can be matched with the displacement of the fracturing fluid.

In practical applications, more than one chemical agent may need to be added into the fracturing fluid, and in order to achieve timely control of the addition amount of each chemical agent, in one embodiment, the fracturing control apparatus 10 provided in the embodiment of the present application further includes a second chemical agent storage tank 114 and a second delivery pump 115; as shown in fig. 8-1 and 8-2, the second chemical storage tank 114 is connected with the second delivery pump 115, and a material outlet of the second delivery pump 115 is communicated with the third position C of the first fracturing fluid delivery pipeline 105; the second feed pump 115 is connected to a fifth output port Y5 of the controller 107.

Wherein the second chemical reservoir 114 may store a different chemical than the first chemical reservoir 101. The second chemical reservoir 114 is coupled to a second delivery pump 115 and may be used to provide chemical feed to the second delivery pump 115.

The material outlet of the second delivery pump 115 is communicated with the third position C of the first fracturing fluid delivery pipe 105, and can provide power for delivering the chemical agent in the second chemical agent storage tank 114 into the first fracturing fluid delivery pipe 105, so that the chemical agent is mixed with the fracturing fluid delivered in the first fracturing fluid delivery pipe 105. The third position C may be upstream of the first position a or downstream of the first position a. It should be noted that the terms "upstream" and "downstream" used in the embodiments of the present application refer to the flow direction of the liquid in the pipeline.

The second feed pump 115 is connected to the fifth output interface Y5 of the controller 107, and specifically, the power element of the second feed pump 115 may be connected to the fifth output interface Y5 of the controller 107. The controller 107 may output commands to adjust the operating state of the power elements to control the flow rate of the chemical pumped by the second delivery pump 115. In practical applications, the second delivery pump 115 may be a plunger pump, a rotor pump, a centrifugal pump, etc., and the power element may be an engine, an electric motor, a hydraulic power takeoff, etc.

It can be understood that through the above scheme, the controller 107 can collect the displacement of the fracturing fluid pumped by the fracturing pump 103 detected by the first flow detection element 104, and adjust the chemical agent flow pumped by the first delivery pump 102 and the chemical agent flow pumped by the second delivery pump 115 according to the displacement of the fracturing fluid pumped by the fracturing pump 103, thereby realizing timely control of the addition amount of various chemical agents in the fracturing fluid. It should be understood that the embodiment of the present application includes the first chemical storage tank 101 and the second chemical storage tank 114, and includes the first delivery pump 102 and the second delivery pump 115, which are only an example and do not represent a limitation to the embodiment of the present application, and in practical applications, more chemical storage tanks and delivery pumps may be included to realize timely control of more chemical addition amounts. In the case of multiple chemical agent storage tanks and delivery pumps, the controller 107 may also start different delivery pumps according to the operation conditions, for example, in the early stage of the fracturing operation, only the chemical agent in the first chemical agent storage tank 101 needs to be added into the fracturing fluid, the first delivery pump 102 may be controlled to operate, and the second delivery pump 115 may stop operating; at the later stage of the fracturing operation, only the chemical agent in the second chemical agent storage tank 114 needs to be added into the fracturing fluid, and then the first delivery pump 102 can be controlled to stop working and the second delivery pump 115 can be controlled to work.

In order to further accurately adjust the adding amount of the chemical agent in the second chemical agent storage tank 114 according to the detected fracturing fluid displacement amount pumped by the fracturing pump 103 by the first flow detection element 104, in one embodiment, the fracturing control device 10 provided by the embodiment of the present application further includes a third flow detection element 116 and a second valve 117; as shown in fig. 8-1 and 8-2, the material outlet of the second delivery pump 115 is communicated with the third position C of the first fracturing fluid delivery pipeline 105 through the third flow detecting element 117, and the third flow detecting element 116 is connected with the sixth input interface X6 of the controller 107; the second chemical reservoir 114 is connected to the second delivery pump 115 via the second valve 117, and the second valve 117 is connected to the sixth output interface Y6 of the controller 107.

The third flow rate detection element 116 may be configured to detect a flow rate of the chemical agent delivered into the first fracturing fluid delivery pipe 105 by the second delivery pump 115. The controller 107 refers to the control process of the controller 107 on the first delivery pump 102 according to the displacement of the fracturing fluid pumped by the fracturing pump 103 detected by the first flow detection element 104 and the flow rate of the chemical agent delivered into the first fracturing fluid delivery pipeline 105 by the second delivery pump 115 detected by the third flow detection element 116, and the process of adjusting the chemical agent to be added based on the automatic control mode and the manual control mode respectively, and is not described herein again.

The second valve 117 is a valve with adjustable opening, and may be a proportional valve. The greater the opening of the second valve 117, the more chemical is delivered from the second chemical storage tank 114 to the second delivery pump 115; conversely, the smaller the opening of the second valve 117, the less chemical is delivered from the second chemical tank 114 to the second delivery pump 115.

It can be understood that, by the above scheme, the controller 107 is connected with the third flow rate detection element 116 for detecting the flow rate of the chemical agent delivered into the first fracturing fluid delivery pipeline 105 by the second delivery pump 115, and the controller 107 is connected with the second valve 117, so that the controller 107 can control the second delivery pump 115 and the second valve 117 according to the target flow rate of the chemical agent corresponding to the displacement of the fracturing fluid or according to the chemical agent addition set flow rate input by a technician, and further, the chemical agent addition amount reaches the expectation so as to meet the requirements of the fracturing operation.

In consideration of the fact that the remaining amount of the chemical agent in the first chemical agent storage tank 101 is too small, which may affect the first delivery pump 102 to continuously deliver the chemical agent into the first fracturing fluid delivery pipe 105, in an embodiment, the control device 10 provided in the embodiment of the present application further includes a first liquid level detection element, which is disposed on the first chemical agent storage tank 101 and is connected to the controller 107.

The first liquid level detection element may be used to detect the liquid level of the chemical in the first chemical tank 101, and specifically may be a differential pressure level meter. The first level detection element is connected to the controller 107, and specifically may be connected to an input interface of the controller 107, for sending the collected chemical level information in the first chemical tank 101 to the controller 107.

It can be understood that, by the above-mentioned solution, the controller 107 is connected to the first liquid level detection element, and the controller 107 can acquire the chemical level information in the first chemical storage tank 101 and further display the chemical level information in the display device 108, thereby implementing real-time monitoring on the chemical remaining in the first chemical storage tank 101. In the event that the remaining amount of chemical within first chemical reservoir 101 is too small, the technician may replenish first chemical reservoir 101 with chemical in a timely manner.

In order to adjust the displacement of the fracturing fluid pumped by the fracturing pump 103 in time to quickly reach the target displacement, in one embodiment, the fracturing pump 103 is connected to a seventh output interface Y7 of the controller 107, as shown in fig. 9.

It will be appreciated that, with the above arrangement, the controller 107 may adjust the flow rate of fracturing fluid pumped by the fracturing pump 103 in time according to the target displacement, which may be input by the technician via the display device 108.

In practical applications, the fracturing control apparatus 10 provided by the embodiment of the present application further includes a liquid supply device 118, and a material outlet of the liquid supply device 118 is communicated with an inlet of the first fracturing fluid conveying pipeline 105, as shown in fig. 10-1; alternatively, the liquid supply device 118 is disposed at a fourth position D of the first fracturing fluid conveying pipeline 105, and the fourth position is located downstream of the first position, as shown in fig. 10-2.

Wherein the liquid supply device 118 may be a centrifugal pump. The position of the liquid supply device 118 may be specifically set according to the type of chemical agent to be added. For example, when the chemical agent added is an easily foaming chemical agent, the material outlet of the liquid supply device 118 may be communicated with the inlet of the first fracturing fluid conveying pipeline 105, that is, the liquid supply device 118 is disposed at the inlet of the first fracturing fluid conveying pipeline 105; when the added chemical agent is a chemical agent which is not easy to foam, a liquid supply device 118 can be arranged at the fourth position D of the first fracturing fluid conveying pipeline 105.

It can be appreciated that by the above solution, the liquid supply device 118 is added, so that more power can be provided to smoothly deliver the fracturing fluid to the wellbore for fracturing operation.

Based on the fracturing control device 10 provided in the embodiment of the present application, the embodiment of the present application further provides a method for controlling based on the fracturing control device 10, as shown in fig. 11, the method includes the following steps:

step 201, determining whether a fault exists, and if not, executing step 202; if so, go to step 201.

The determination of whether a fault exists can be performed by determining whether fault information is acquired by the fault information acquisition device, wherein the fault can be a fault in a pipeline or a fault in the device. When a fault exists, fault information can be displayed on the display device to prompt technicians to repair the fault as soon as possible, and step 201 is repeatedly executed until the fault is removed, and then step 202 is executed.

Step 202, determining whether the control mode is an automatic control mode, if so, executing step 203; if not, go to step 204.

The determination of whether the control mode is the automatic control mode may be performed according to the control mode acquired by the control mode information acquisition device, which may specifically refer to the foregoing embodiments and is not described herein again.

Step 203, determining whether the flow of the chemical agent is matched with the displacement of the fracturing fluid according to the displacement of the fracturing fluid pumped by the fracturing pump, the flow of the chemical agent conveyed into a first fracturing fluid conveying pipeline by the first conveying pump and a pre-stored ratio of the flow of the chemical agent to the displacement of the fracturing fluid, if not, executing step 205, and if so, executing step 208.

The displacement of the fracturing fluid pumped by the fracturing pump can be detected by the first flow detection element, the flow of the chemical agent conveyed into the first fracturing fluid conveying pipeline by the first conveying pump can be detected by the second flow detection element, and the pre-stored proportion of the flow of the chemical agent to the displacement of the fracturing fluid can be pre-input and stored by a technician through the display device.

Step 204, acquiring a chemical agent addition set flow rate, controlling the first delivery pump according to the chemical agent addition set flow rate to adjust the chemical agent flow rate pumped by the first delivery pump, and executing step 207.

The chemical agent addition set flow can be input by a technician according to the displacement of the fracturing fluid pumped by the fracturing pump, specifically, the chemical agent addition set flow can be input through a display device, and can also be input through a flow adjusting knob.

And 205, controlling the first delivery pump to adjust the flow rate of the chemical agent pumped by the first delivery pump.

The first conveying pump is controlled, and the rotating speed of the first conveying pump can be controlled; the rotating speed of the first conveying pump is increased, the chemical agent flow can be increased, and the rotating speed of the first conveying pump is decreased, so that the chemical agent flow can be reduced.

Step 206, determining whether the adjusted chemical agent flow rate is matched with the fracturing fluid displacement, if so, executing step 208, and if not, executing step 205.

It should be understood that the first flow detection element may detect the displacement of the fracturing fluid pumped by the fracturing pump in real time, the second flow detection element may detect the flow of the chemical agent conveyed by the first conveying pump into the first fracturing fluid conveying pipeline in real time, so that the controller may obtain real-time data, and after the first conveying pump is controlled, the controller may further determine whether the flow of the chemical agent conveyed by the first conveying pump matches with the displacement of the fracturing fluid again according to the displacement of the fracturing fluid pumped by the fracturing pump detected by the first flow detection element, the flow of the chemical agent conveyed by the first conveying pump into the first fracturing fluid conveying pipeline detected by the second flow detection element, and the ratio of the chemical agent flow and the fracturing fluid displacement pre-stored in the controller.

Step 207, determining whether the adjusted flow rate of the chemical agent is matched with the chemical agent addition set flow rate, if so, executing step 208, and if not, executing step 204.

It should be understood that the second flow detection element may detect, in real time, the flow rate of the chemical agent conveyed by the first conveying pump into the first fracturing fluid conveying pipeline, so that the controller may obtain real-time data, and after controlling the first conveying pump, may further determine whether to match the chemical agent addition set flow rate again according to the flow rate of the chemical agent conveyed by the first conveying pump into the first fracturing fluid conveying pipeline, which is detected by the second flow detection element.

And step 208, ending.

By the aid of the scheme, the controller can collect the discharge capacity of the fracturing fluid pumped out by the fracturing pump detected by the first flow detection element, control the first delivery pump according to the discharge capacity of the fracturing fluid pumped out by the fracturing pump, further adjust the flow of the chemical agent pumped by the first delivery pump, and adjust the addition amount of the chemical agent in the fracturing fluid, so that a technician can be prevented from going to an operation site to perform manual control, and timely control over the addition amount of the chemical agent is realized.

Based on the fracturing control device 10 provided in the embodiment of the present application, the embodiment of the present application further provides a method for controlling based on the fracturing control device 10, as shown in fig. 12, the method includes the following steps:

step 301, determining whether a fault exists, and if not, executing step 302; if so, go to step 301.

Step 302, determining whether the fracturing fluid displacement is matched with the target displacement, if so, executing step 305, and if not, executing step 303.

Wherein the target displacement may be input by a technician via the display device.

And 303, controlling a fracturing pump to control the discharge capacity of the fracturing fluid.

And 304, determining whether the adjusted fracturing fluid displacement is matched with the target displacement, if so, executing a step 305, and if not, executing a step 303.

It should be understood that the first flow detection element may detect the displacement of the fracturing fluid pumped by the fracturing pump in real time, so that the controller may obtain real-time data, and after the fracturing pump is controlled, whether the displacement of the fracturing fluid pumped by the fracturing pump matches with the target displacement may be further determined according to the displacement of the fracturing fluid pumped by the fracturing pump detected by the first flow detection element.

And step 305, ending.

By the scheme, the controller can timely adjust the flow of the fracturing fluid pumped by the fracturing pump according to the target discharge capacity so as to meet the requirement of fracturing operation.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The fracturing control equipment is characterized by comprising a first chemical agent storage tank, a first delivery pump, a fracturing pump, a first flow detection element, a first fracturing fluid delivery pipeline, a second fracturing fluid delivery pipeline and a controller;

the first chemical agent storage tank is connected with the first conveying pump, and a material outlet of the first conveying pump is communicated with a first position of the first fracturing fluid conveying pipeline;

an outlet of the first fracturing fluid conveying pipeline is communicated with an inlet of the fracturing pump, an outlet of the fracturing pump is communicated with an inlet of the second fracturing fluid conveying pipeline, and the first flow detection element is arranged at a second position of the second fracturing fluid conveying pipeline;

the first delivery pump is connected with a first output interface of the controller, and the first flow detection element is connected with a first input interface of the controller.

2. The fracturing control device of claim 1, further comprising a display having an input;

the display device is connected with the second input interface of the controller, and the display device is connected with the second output interface of the controller.

3. The fracturing control device of claim 2, further comprising a control mode information acquisition device;

the control mode information acquisition device is connected with a third input interface of the controller.

4. The fracturing control device of claim 3, further comprising a fault information acquisition device;

and the fault information acquisition device is connected with a fourth input interface of the controller.

5. The fracturing control device of claim 4, further comprising an alarm device;

and the alarm device is connected with a third output interface of the controller.

6. The fracturing control apparatus of claim 1, further comprising a second flow sensing element;

and a material outlet of the first conveying pump is communicated with a first position of the first fracturing fluid conveying pipeline through the second flow detection element, and the second flow detection element is connected with a fifth input interface of the controller.

7. The fracturing control apparatus of claim 6, further comprising a first valve;

the first chemical agent storage tank is connected with the first delivery pump through the first valve, and the first valve is connected with a fourth output interface of the controller.

8. The fracturing control apparatus of claim 7, further comprising a second chemical storage tank and a second delivery pump;

the second chemical agent storage tank is connected with the second conveying pump, and a material outlet of the second conveying pump is communicated with a third position of the first fracturing fluid conveying pipeline; the second delivery pump is connected with a fifth output interface of the controller.

9. The fracturing control device of claim 8, further comprising a third flow sensing element and a second valve;

a material outlet of the second conveying pump is communicated with a third position of the first fracturing fluid conveying pipeline through a third flow detection element, and the third flow detection element is connected with a sixth input interface of the controller;

the second chemical agent storage tank is connected with the second delivery pump through the second valve, and the second valve is connected with a sixth output interface of the controller.

10. The fracturing control device of claim 1, wherein the fracturing pump is connected to a seventh output interface of the controller.

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