CN116906304A - Control method and device of well cementation equipment, well cementation equipment and storage medium - Google Patents
Control method and device of well cementation equipment, well cementation equipment and storage medium Download PDFInfo
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- CN116906304A CN116906304A CN202310478263.2A CN202310478263A CN116906304A CN 116906304 A CN116906304 A CN 116906304A CN 202310478263 A CN202310478263 A CN 202310478263A CN 116906304 A CN116906304 A CN 116906304A
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000006073 displacement reaction Methods 0.000 claims abstract description 165
- 239000002002 slurry Substances 0.000 claims abstract description 95
- 238000004891 communication Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 90
- 230000001276 controlling effect Effects 0.000 description 23
- 239000010720 hydraulic oil Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000015654 memory Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
Abstract
The invention relates to the technical field of engineering machinery and discloses a control method and device of well cementation equipment, the well cementation equipment and a storage medium, wherein the method comprises the steps of obtaining first actual power of a power source and second actual power of a first pump body, wherein the power source is used for driving the first pump body and a second pump body, and the second pump body is used for driving a slurry pump to rotate; determining the maximum power of the second pump body based on the first actual power and the second actual power to obtain the maximum working current of the second pump body; acquiring the actual displacement of a slurry pump in well cementation equipment to obtain the differential displacement between the actual displacement and the target displacement of the slurry pump; and controlling the working current of the second pump body based on the differential displacement and the maximum working current of the second pump body. The working current of the slurry pump is adjusted by utilizing the difference between the actual flow and the target flow of the slurry pump, and the constraint of the maximum working current is combined during adjustment, so that the performance of the power source is exerted to the maximum extent.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a control method and device of well cementation equipment, the well cementation equipment and a storage medium.
Background
The power device of the well cementation equipment comprises a bench engine and a chassis engine, wherein the two engines respectively drive two hydraulic pumps, and the two hydraulic pumps enter a hydraulic motor after being converged, so that a slurry pump is driven to work. The cementing equipment will also typically be provided with two centrifugal pumps, namely a jet pump and a circulation pump. The jet pump is used for providing clear water for the slurry mixing system, and the circulating pump is used for providing slurry for the slurry pump. For example, the bench engine drives the oil pump 1 and the oil pump 4, the chassis engine drives the oil pump 2 and the oil pump 3, the oil pump 1 and the oil pump 2 are combined, oil enters the hydraulic motor, and the hydraulic motor drives the gearbox, so that the slurry pump is driven to rotate. The oil of the oil pump 3 enters the hydraulic motor to drive the centrifugal pump 01, and the centrifugal pump 01 is used for providing clean water for the slurry mixing system. The oil of the oil pump 4 enters the hydraulic motor to drive the centrifugal pump 02, and the centrifugal pump 02 conveys the mixed cement slurry to the stream mouth of the slurry pump.
Through the connection analysis of the power device, the situation that one engine drives two or more hydraulic oil pumps can be found. In order to ensure that the engine does not stall all the time, the power of the engine must be ensured to be completely greater than the sum of the powers of all the hydraulic oil pumps. Based on the above, a mode is often adopted in which a plurality of oil pumps are prohibited from working simultaneously, however, the well cementation equipment is difficult to meet a plurality of working conditions, and further the problem of limited application scenes is caused.
Disclosure of Invention
In view of the above, the invention provides a control method and device of well cementation equipment, well cementation equipment and a storage medium, so as to solve the problem of limited application scenes of the well cementation equipment.
In a first aspect, the present invention provides a method of controlling a well cementing apparatus, the method comprising:
acquiring a first actual power of a power source and a second actual power of a first pump body, wherein the power source is used for driving the first pump body and a second pump body, and the second pump body is used for driving the slurry pump to rotate;
determining the maximum power of the second pump body based on the first actual power and the second actual power to obtain the maximum working current of the second pump body;
acquiring the actual displacement of a slurry pump in the well cementation equipment to obtain the differential displacement between the actual displacement and the target displacement of the slurry pump;
and controlling the working current of the second pump body based on the differential displacement and the maximum working current of the second pump body.
According to the control method of the well cementation equipment, the power source drives the first pump body and the second pump body simultaneously, and the maximum power of the second pump body is obtained through obtaining the second actual power of the first pump body, so that the maximum working current of the second pump body is restrained. Meanwhile, as the second pump body is used for driving the rotation of the slurry pump, the working current of the slurry pump is adjusted by utilizing the difference between the actual flow and the target flow of the slurry pump, and the constraint of the maximum working current is combined during adjustment, the simultaneous working of the first pump body and the second pump body is ensured, and the performance of a power source is exerted to the greatest extent, so that the application range of the well cementation equipment is widened.
In some optional embodiments, the controlling the working current of the second pump body based on the differential displacement and the maximum working current of the second pump body includes:
acquiring the actual working current of the second pump body;
and if the actual working current is smaller than the maximum working current, controlling the working current of the second pump body based on the differential displacement.
According to the control method of the well cementation equipment, provided by the embodiment of the invention, the working current of the second pump body is restrained by utilizing the maximum working current, so that the power of the first pump body and the second pump body cannot exceed the actual power of the power source, and the flameout of the power source is prevented.
In some optional embodiments, the controlling the working current of the second pump body based on the differential displacement includes:
if the differential displacement is greater than zero, reducing the working current of the second pump body;
and if the differential displacement is smaller than zero, increasing the working current of the second pump body, wherein the increased working current is smaller than the maximum working current.
According to the control method of the well cementation equipment, provided by the embodiment of the invention, under the condition that the differential displacement is larger than zero, the current actual displacement is larger than the target displacement, and the actual displacement is reduced in a mode of reducing the working current of the second pump body. Under the condition that the differential displacement is smaller than zero, the current actual displacement is smaller than the target displacement, the actual displacement is increased by increasing the working current of the second pump body, and the constraint that the maximum working current is required to be combined in the process of increasing the working current is met, so that the displacement requirement of the slurry pump can be met under the condition that the power source can drive the first pump body and the second pump body simultaneously.
In some optional embodiments, the controlling the working current of the second pump body based on the differential displacement and the maximum working current of the second pump body includes:
and if the actual working current is greater than or equal to the maximum working current, adjusting the actual working current to the maximum working current.
According to the control method of the well cementation equipment, provided by the embodiment of the invention, the working current of the second pump body is restrained by the maximum working current, so that the sum of the power of the first pump body and the power of the second pump body is prevented from being larger than the actual power of the power source, and flameout of the power source can be avoided.
In some alternative embodiments, the obtaining the first actual power of the power source includes:
acquiring the actual rotation speed of the power source;
and inquiring external characteristic data based on the actual rotating speed, and determining the first actual power of the power source, wherein the external characteristic data is used for representing the relation between the power and the rotating speed of the power source.
According to the control method of the well cementation equipment, the external characteristic data represent the relation between the power and the rotating speed of the power source, and after the actual rotating speed is obtained, the first actual power of the power source can be obtained by utilizing the external characteristic data, so that the processing process is simplified, and the processing efficiency is improved.
In some alternative embodiments, the obtaining the actual displacement of the mud pump in the well cementing apparatus comprises:
acquiring the actual rotation speed of the slurry pump;
and determining the actual displacement by using the actual rotation speed.
According to the control method of the well cementation equipment, provided by the embodiment of the invention, a direct association relation exists between the rotating speed and the displacement of the slurry pump, the actual displacement of the slurry pump can be accurately represented through the detected actual rotating speed, and the accuracy of the determined actual displacement is improved.
In some alternative embodiments, the method further comprises:
acquiring a displacement input instruction, wherein the displacement input instruction is used for determining the target displacement;
determining an initial operating current of the second pump body based on the target displacement;
and controlling the operation of the second pump body based on the initial operation current.
According to the control method of the well cementation equipment, provided by the embodiment of the invention, the initial working current of the second pump body is obtained by utilizing the target displacement, and the initial working current is utilized to control the initial current of the second pump body, so that the initial displacement of the slurry pump is in the range of the target displacement, and the accuracy of initial control is improved.
In a second aspect, an embodiment of the present invention further provides a control device for a well cementing apparatus, the device including:
the power acquisition module is used for acquiring first actual power of a power source and second actual power of the first pump body, the power source is used for driving the first pump body and the second pump body, and the second pump body is used for driving the slurry pump to rotate;
the maximum power determining module is used for determining the maximum power of the second pump body based on the first actual power and the second actual power so as to obtain the maximum working current of the second pump body;
the actual displacement acquisition module is used for acquiring the actual displacement of the slurry pump in the well cementation equipment so as to obtain the differential displacement between the actual displacement and the target displacement of the slurry pump;
and the current control module is used for controlling the working current of the second pump body based on the differential displacement and the maximum working current of the second pump body.
In a third aspect, embodiments of the present invention also provide a well cementing apparatus, comprising:
the device comprises a power source, a first pump body, a second pump body and a slurry pump, wherein the power source is used for driving the first pump body and the second pump body, and the second pump body is used for driving the slurry pump to rotate;
and the controller is in communication connection with the power source, the first pump body, the second pump body and the slurry pump, and is used for executing the control method of the well cementation equipment in the first aspect or any implementation mode of the first aspect.
In a fourth aspect, an embodiment of the present invention further provides a computer readable storage medium, where computer instructions are stored, where the computer instructions are configured to cause a computer to execute the information processing method described in the first aspect or any implementation manner of the first aspect.
It should be noted that, the control device of the well cementation device, the well cementation device and the computer readable storage medium provided in the embodiments of the present invention refer to the description of the corresponding beneficial effects of the control method of the well cementation device, and are not repeated here.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic hardware configuration of a cementing apparatus according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method of controlling a cementing apparatus according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method of controlling another cementing apparatus according to an embodiment of the present invention;
FIG. 4 is a control block diagram of a cementing apparatus according to an embodiment of the present invention;
FIG. 5 is a control block diagram of current adaptive control according to an embodiment of the present invention;
FIG. 6 is a flow chart of a method of controlling yet another cementing apparatus according to an embodiment of the present invention;
fig. 7 is a block diagram of a control device of a well cementing apparatus according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The control method of the well cementation equipment provided by the embodiment of the invention ensures that the pump bodies determined by the power source can work simultaneously, meets the requirement of the target displacement of the slurry pump, and controls the working current of the second pump body for driving the slurry pump.
The well cementation equipment provided by the embodiment of the invention comprises a power source, a first pump body, a second pump body, a slurry pump and a controller. The power source is used for driving the first pump body and the second pump body, for example, the power source is connected with the engine, and the engine is connected with shafts of the first pump body and the second pump body so as to drive the first pump body and the second pump body. The second pump body is used for driving the rotation of the slurry pump, and the first pump body can be used for driving the first centrifugal pump, for providing clean water for the slurry mixing system, or for driving the second centrifugal pump, for conveying mixed cement slurry to the suction port of the slurry pump.
The controller is in communication connection with the power source, the first pump body, the second pump body and the slurry pump and is used for controlling the actions of the power source, the first pump body, the second pump body and the slurry pump. Specifically, the power source controls the working current of the second pump body by executing the control method of the well cementation equipment, so that the power source of the well cementation equipment can drive the first pump body and the second pump body simultaneously and can meet the discharge capacity requirement of the slurry pump.
In some alternative embodiments, as shown in fig. 1, the power source comprises a chassis engine 20 and a bench engine 30, the first pump body comprises an oil pump 3 and an oil pump 4, the second pump body comprises an oil pump 1 and an oil pump 2, and oil enters the hydraulic motor after the oil pump 1 and the oil pump 2 are combined, so that the gearbox is driven to drive the slurry pump to rotate. The oil of the oil pump 3 enters the centrifugal pump 01 to provide clean water for the slurry mixing system. The oil of the oil pump 4 enters the centrifugal pump 02 and the mixed cement slurry is conveyed to the suction port of the slurry pump. The controller 10 controls the chassis engine 20, the bench engine 30, and the oil pumps 1 to 4, respectively.
It should be noted that fig. 1 is only an example of the well cementing apparatus, and does not limit the scope of the present invention. For example, the power sources are not limited to the chassis engine 20 and the bench engine 30 described above, and may include other types of power sources. The oil pump driven by the chassis engine 20 is not limited to the oil pump 2 and the oil pump 3 described above, and the oil pump driven by the bench engine is not limited to the oil pump 1 and the oil pump 4 described above. Since the chassis engine 20 drives the oil pump 2 and the oil pump 3 in a similar manner to the bench engine 30 drives the oil pump 1 and the oil pump 4. Therefore, only one of them will be described in detail hereinafter. In the practical application process, the chassis engine 20 and the bench engine 30 are controlled to ensure the normal operation of the well cementing equipment.
According to an embodiment of the present invention, there is provided a control method embodiment of a well cementing apparatus, it being noted that the steps shown in the flowchart of the drawings may be performed in a computer system, such as a set of computer executable instructions, and, although a logical sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than what is shown herein.
In this embodiment, a control method of a well cementing device is provided, which may be used in the controller of the well cementing device, and fig. 2 is a flowchart of the control method of the well cementing device according to an embodiment of the present invention, as shown in fig. 2, where the flowchart includes the following steps:
step S201, obtaining a first actual power of the power source and a second actual power of the first pump body.
The power source is used for driving the first pump body and the second pump body, and the second pump body is used for driving the slurry pump to rotate.
The first actual power of the power source is the power of the power source in the working process, and can be determined by measuring the voltage and the current of the power source respectively. Or, the external characteristic curve of the power source representing the rotation speed and the power is obtained by measuring the actual rotation speed of the power source and combining the external characteristic curve of the power source representing the rotation speed and the power.
The second actual power of the first pump body can be obtained by calculating by using a power calculation formula after detecting the actual working pressure, the working current and the rotating speed of the first pump body in real time. Alternatively, the working voltage and the working current of the first pump body can be detected.
The power source drives the first pump body and the second pump body simultaneously, and the first pump body and the second pump body are only distinguished from each other in terms of functions, and the number of the pump bodies driven by the power source is not limited. Further, for ease of understanding, the pump body for driving the slurry pump is referred to as a first pump body, and the remaining pump bodies are referred to as first pump bodies. Correspondingly, the second actual power of the first pump body is the sum of the actual powers of all the other pump bodies.
The first pump body and the second pump body may be oil pumps, or may be other types of pump bodies, and the specific types of the pump bodies are not limited.
Step S202, determining the maximum power of the second pump body based on the first actual power and the second actual power to obtain the maximum working current of the second pump body.
As described above, the power of the first pump body and the power of the second pump body are both from the power source, and therefore, the sum of the power of the first pump body and the power of the second pump body should be smaller than the first actual power of the power source. Based on the above, after determining the first actual power of the power source and the second actual power of the first pump body, the maximum power of the second pump body is obtained using the constraint of the above powers. And converting the maximum power into working current of the second pump body to obtain the maximum working current. The calculation manner between the power and the working current of the second pump body is similar to the calculation manner for determining the first actual power, and will not be described herein.
Step S203, obtaining the actual displacement of the slurry pump in the well cementation equipment so as to obtain the differential displacement between the actual displacement and the target displacement of the slurry pump.
The function of the second pump body is described above, i.e. the second pump body is used to drive the rotation of the mud pump. Based on the speed, the speed of the second pump body influences the speed of the slurry pump, and the displacement of the slurry pump is further influenced. The larger the working current of the second pump body is, the faster the rotating speed of the second pump body is, and correspondingly, the faster the rotating speed of the slurry pump is, and the larger the actual displacement of the slurry pump is; the lower the working current of the second pump body, the slower the rotation speed of the second pump body, and correspondingly, the slower the rotation speed of the slurry pump, the smaller the actual displacement of the slurry pump.
The target displacement of the mud pump may be obtained by communication with a third party device, may be provided with man-machine interaction functionality, may be entered by a user through interaction with the cementing device, or may be determined in other ways. The determination method of the target displacement is not limited at all, and is specifically set according to actual requirements.
The actual displacement characterizes the actual operation of the mud pump, and the target displacement characterizes the target operation of the mud pump. And comparing the two to obtain differential displacement, and reflecting the difference between the actual working condition and the target working condition.
Step S204, controlling the working current of the second pump body based on the differential displacement and the maximum working current of the second pump body.
The differential displacement represents the adjustment direction of the rotation speed of the slurry pump, correspondingly, the adjustment direction of the rotation speed of the second pump body for driving the slurry pump is obtained, and then the adjustment direction of the working current of the second pump body is determined. And the working current of the second pump body needs to be constrained by the maximum working current, so that the control of the working current of the second pump body needs to be performed by combining the differential displacement and the maximum working current.
According to the control method of the well cementation equipment, the power source drives the first pump body and the second pump body simultaneously, and the maximum power of the second pump body is obtained by obtaining the second actual power of the first pump body, so that the maximum working current of the second pump body is restrained. Meanwhile, as the second pump body is used for driving the rotation of the slurry pump, the working current of the slurry pump is adjusted by utilizing the difference between the actual flow and the target flow of the slurry pump, and the constraint of the maximum working current is combined during adjustment, the simultaneous working of the first pump body and the second pump body is ensured, and the performance of a power source is exerted to the greatest extent, so that the application range of the well cementation equipment is widened.
In this embodiment, a control method of a well cementing device is provided, which may be used in the controller of the well cementing device, and fig. 3 is a flowchart of the control method of the well cementing device according to an embodiment of the present invention, as shown in fig. 3, where the flowchart includes the following steps:
step S301, obtaining a first actual power of the power source and a second actual power of the first pump body.
The power source is used for driving the first pump body and the second pump body, and the second pump body is used for driving the slurry pump to rotate. Please refer to the description of step S201 in the embodiment shown in fig. 2 in detail, which is not repeated here.
Step S302, determining the maximum power of the second pump body based on the first actual power and the second actual power to obtain the maximum working current of the second pump body.
Taking the cementing equipment shown in fig. 1 as an example, the power source comprises a chassis engine and a bench engine. Fig. 4 shows a chassis engine driven oil pump 2 and an oil pump 3, the oil pump 2 being used to drive the rotation of the slurry pump. The first actual power of the chassis engine is obtained by detecting the rotation speed of the chassis engine, and the second actual power of the oil pump 3 is obtained by detecting the working pressure, current and rotation speed of the oil pump 3. Because the chassis engine drives the oil pump 2 and the oil pump 3 at the same time, the sum of the power of the oil pump 2 and the power of the oil pump 3 is smaller than the first actual power, and the maximum power of the oil pump 2 is obtained by combining the second actual power of the oil pump 3. The maximum operating current of the oil pump 2 is obtained by using the maximum power of the oil pump 2 based on the relation between the power of the oil pump and the current.
The rest of the details refer to step S202 in the embodiment shown in fig. 2, and are not described herein.
Step S303, obtaining the actual displacement of the slurry pump in the well cementation equipment so as to obtain the differential displacement between the actual displacement and the target displacement of the slurry pump. Please refer to the description of step S203 in the embodiment shown in fig. 3 in detail, which is not repeated here.
And step S304, controlling the working current of the second pump body based on the differential displacement and the maximum working current of the second pump body.
Specifically, the step S304 includes:
step S3041, obtaining an actual working current of the second pump body.
The actual working current of the second pump body is detected by a current transformer or a current sensor. Of course, the actual working current of the second pump body may be measured in other manners, which is not limited in any way herein.
And step S3042, if the actual working current is smaller than the maximum working current, controlling the working current of the second pump body based on the differential displacement.
And (3) controlling the working current of the second pump body by combining the differential displacement after the measured actual working current and the maximum working current are smaller than the maximum working current, and indicating that the actual working current meets the constraint of the maximum working current at the moment.
In some alternative embodiments, step S3042 includes:
and a1, if the differential displacement is larger than zero, reducing the working current of the second pump body.
And a2, if the differential displacement is smaller than zero, increasing the working current of the second pump body, and the increased working current is smaller than the maximum working current.
And under the condition that the differential displacement is larger than zero, the current actual displacement is larger than the target displacement, and the actual displacement is reduced by reducing the working current of the second pump body. For example, the operating currents of the oil pump 1 and the oil pump 2 are synchronously reduced until the differential displacement reaches the allowable error range. In the case where the differential displacement is smaller than zero, which means that the current actual displacement is smaller than the target displacement, the actual displacement is increased by increasing the working current of the second pump body and the increasing process also requires a constraint in combination with the maximum working current, for example, the working currents of the oil pump 1 and the oil pump 2 are increased synchronously until the differential displacement reaches the allowable error range. The mode can also meet the discharge capacity requirement of the slurry pump under the condition that the power source can drive the first pump body and the second pump body simultaneously.
In step S3043, if the actual working current is greater than or equal to the maximum working current, the actual working current is adjusted to the maximum working current.
And under the condition that the actual working current is equal to or exceeds the maximum working current, directly taking the maximum working current as the actual working current of the second pump body, and controlling the current of the second pump body.
In some alternative embodiments, continuing with the example shown in fig. 1, the oil pump 1 merges with the oil pump 2, turning the mud pump. Accordingly, the actual displacement of the slurry pump is related to the oil pump 1 and the oil pump 2, and accordingly, the operating currents of the oil pump 1 and the oil pump 2 need to be controlled in combination with the differential displacement. As shown in fig. 5, after the target displacement of the slurry pump is obtained, the initial operating currents of the oil pump 2 and the oil pump 1 are obtained after signal conversion. The displacement deviation between the actual displacement of the mud pump and the target displacement of the mud pump controls the working current of the oil pump 2 and the oil pump 1 during the operation of the cementing device. If the maximum working current is smaller than the maximum working current (the maximum current for short), the working current is regulated by combining the maximum current and the displacement deviation, and if the maximum working current is larger than or equal to the maximum current, the maximum current is used as the working current.
According to the control method of the well cementation equipment, the maximum working current is utilized to restrain the working current of the second pump body, so that the power of the first pump body and the second pump body cannot exceed the actual power of the power source, and therefore flameout of the power source is prevented. The maximum working current is used for restraining the working current of the second pump body, so that the sum of the power of the first pump body and the power of the second pump body is prevented from being larger than the actual power of the power source, and flameout of the power source can be avoided.
In this embodiment, a control method of a well cementing device is provided, which may be used in the controller of the well cementing device, and fig. 6 is a flowchart of the control method of the well cementing device according to an embodiment of the present invention, as shown in fig. 6, where the flowchart includes the following steps:
in step S601, a first actual power of the power source and a second actual power of the first pump body are obtained.
The power source is used for driving the first pump body and the second pump body, and the second pump body is used for driving the slurry pump to rotate.
Specifically, the step S601 includes:
in step S6011, the actual rotation speed of the power source is obtained.
Step S6012, determining a first actual power of the power source based on the actual rotational speed query external characteristic data.
Wherein the external characteristic data is used for representing the relation between the power and the rotating speed of the power source.
The actual rotation speed of the power source can be measured through a set rotation speed sensor, and the first actual power corresponding to the actual rotation speed is obtained by combining the external characteristic data of the power source. For example, the external characteristic data represents a corresponding relation between the rotational speed and the power, and the corresponding points of the rotational speed and the power are subjected to curve fitting to obtain an external characteristic curve. And then inquiring the external characteristic curve by using the measured actual rotating speed to obtain the first actual power.
Step S6013, obtaining the second actual power of the first pump body.
The second actual power is obtained in the manner described above and will not be described in detail herein.
Step S602, determining the maximum power of the second pump body based on the first actual power and the second actual power to obtain the maximum working current of the second pump body. Please refer to the description of step S302 in the embodiment shown in fig. 3 in detail, which is not repeated here.
Step S603, obtaining the actual displacement of the slurry pump in the well cementation equipment so as to obtain the differential displacement between the actual displacement and the target displacement of the slurry pump.
Specifically, the step S603 includes:
in step S6031, the actual rotation speed of the slurry pump is acquired.
Step S6032, determining the actual displacement using the actual rotational speed.
The relation between the rotation speed and the displacement can be obtained through big data analysis or factory parameters of the slurry pump. And detecting the actual rotation speed of the slurry pump, and combining the relation between the rotation speed and the displacement to obtain the actual displacement corresponding to the actual rotation speed.
Step S6033, determining a differential displacement between the actual displacement and the target displacement of the mud pump.
And calculating the difference between the actual displacement and the target displacement to obtain the differential displacement. Of course, the differential displacement may also be the difference between the target displacement and the actual displacement. The specific calculation mode of the differential displacement is not limited at all, and is specifically set according to actual requirements.
Step S604, controlling the working current of the second pump body based on the differential displacement and the maximum working current of the second pump body. Please refer to the description of step S304 in the embodiment shown in fig. 3 in detail, which is not repeated here.
According to the control method of the well cementation equipment, the external characteristic data represent the relation between the power and the rotating speed of the power source, and after the actual rotating speed is obtained, the first actual power of the power source can be obtained by utilizing the external characteristic data, so that the processing process is simplified, and the processing efficiency is improved. The direct association relation exists between the rotating speed and the displacement of the slurry pump, the actual displacement of the slurry pump can be accurately represented through the detected actual rotating speed, and the accuracy of the determined actual displacement is improved.
In some alternative embodiments, the method of controlling a well cementing apparatus further comprises:
and b1, acquiring a displacement input command, wherein the displacement input command is used for determining a target displacement.
And b2, determining the initial working current of the second pump body based on the target displacement.
And b3, controlling the operation of the second pump body based on the initial operation current.
And the user interacts with the well cementation equipment to input the target displacement, and correspondingly, the controller of the well cementation equipment acquires a displacement input command to obtain the target displacement. The target displacement is used to determine the initial working current of the second pump body, and the conversion between displacement and current is described above, and will not be repeated here. When the well cementation equipment starts to work, the work of the second pump body is controlled by the initial working current.
And obtaining the initial working current of the second pump body by utilizing the target displacement, and performing initial current control on the second pump body by utilizing the initial working current, so that the initial displacement of the slurry pump is in the range of the target displacement, and the accuracy of initial control is improved.
As a specific application example of the embodiment of the present invention, description will be made with reference to the structure of the cementing apparatus shown in fig. 1. The well cementation equipment comprises a chassis, a slurry pump, a metering tank, a slurry mixing tank, a power system, an operation platform, a hydraulic system, a gas circuit system and an electric system. The hydraulic system consists of a large pump hydraulic system, an injection system, a circulation system, a slurry mixing system, a lubrication system, a fan system and the like. The power sources of the well cementation equipment are respectively a bench engine and a chassis engine. The transfer case is connected with the bench engine and provided with a plurality of power taking ports, and can drive a plurality of hydraulic oil pumps to work simultaneously and respectively provide power for a circulation system, a slurry mixing system, a lubrication system, a fan system and the like. A transfer case power take-off port of the bench engine drives an oil pump 1, a chassis engine drives an oil pump 2, and after the oil pump 1 and the oil pump 2 are combined, hydraulic oil enters a plurality of hydraulic motors connected in parallel, and the hydraulic motors drive a slurry pump to work. The chassis engine also drives an oil pump 3, hydraulic oil of the oil pump 3 drives a hydraulic motor to drive a centrifugal pump 01 to work, and the centrifugal pump 01 is a jet pump and is used for providing clean water for the slurry mixing system. The chassis engine driven oil pump 2 and the oil pump 3 both adopt electric proportional control variable pumps, and the actual displacement of the hydraulic oil pump can be controlled by changing the current value. The data acquisition system is provided with the well cementation equipment, stores external characteristic data of the chassis engine and the bench engine, and can determine the external characteristic power value of the engine by detecting the actual rotation speed of the chassis engine or the bench engine; the data acquisition system detects the actual working pressure, displacement control current value and rotating speed of the oil pump 3, determines the actual power of the current chassis engine and the actual power of the oil pump 3, further obtains the distributable maximum power of the oil pump 2, and converts the maximum power of the oil pump 2 into the maximum current of the oil pump 2. Within this maximum current range, the operating current of the oil pump 2 can still be varied as desired. The data acquisition system can detect and calculate the actual power of the oil pump 4, further obtain the maximum power which can be distributed by the oil pump 1, and convert the maximum power of the oil pump 1 into the maximum current of the oil pump 1, and the current of the oil pump 1 can still be changed as required within the upper limit range. The controller converts the displacement of the slurry pump into current signals of the oil pump 1 and the oil pump 2, and judges whether the signals are within an upper limit range, and if the signals are beyond the upper limit, the signals are executed according to the upper limit value. And meanwhile, the actual displacement of the slurry pump is detected and compared with the required displacement, and the generated deviation signals further adjust the working currents of the oil pump 1 and the oil pump 2.
The slurry pump and the centrifugal pump of the well cementation equipment are driven by a hydraulic transmission system, the hydraulic oil pump and the hydraulic motor are both in an electric proportional displacement control mode, and the actual power of each system can be detected and controlled in real time through a data acquisition system. The data acquisition system can adjust the actual power of each oil pump at any time by controlling the oil pump displacement to control the current, so that the power of each oil pump is ensured not to exceed the external characteristic power of the engine forever, and the engine is prevented from flameout. One engine can drive a plurality of oil pumps to work simultaneously, and the performance of the engine can be exerted to the greatest extent through power detection and self-adaptive distribution.
The embodiment also provides a control device of the well cementing equipment, which is used for realizing the embodiment and the preferred embodiment, and the description is omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
The present embodiment provides a control device for a well cementing apparatus, as shown in fig. 7, including:
the power obtaining module 701 is configured to obtain a first actual power of a power source and a second actual power of a first pump body, where the power source is configured to drive the first pump body and a second pump body, and the second pump body is configured to drive rotation of the slurry pump.
The maximum power determining module 702 is configured to determine the maximum power of the second pump body based on the first actual power and the second actual power, so as to obtain the maximum working current of the second pump body.
The actual displacement acquisition module 703 is configured to acquire an actual displacement of the mud pump in the well cementing device, so as to obtain a differential displacement between the actual displacement and a target displacement of the mud pump.
The current control module 704 is configured to control an operating current of the second pump body based on the differential displacement and the maximum operating current of the second pump body.
In some alternative embodiments, the current control module 704 includes:
and the current acquisition unit is used for acquiring the actual working current of the second pump body.
And the first control unit is used for controlling the working current of the second pump body based on the differential displacement if the actual working current is smaller than the maximum working current.
In some alternative embodiments, the first control unit includes:
and the current reducing subunit is used for reducing the working current of the second pump body if the differential displacement is larger than zero.
And the current increasing subunit is used for increasing the working current of the second pump body and the increased working current is smaller than the maximum working current if the differential displacement is smaller than zero.
In some alternative embodiments, the current control module 704 includes:
and the current determining unit is used for adjusting the actual working current to the maximum working current if the actual working current is larger than or equal to the maximum working current.
In some alternative embodiments, the power acquisition module 701 includes:
and the first rotation speed acquisition unit is used for acquiring the actual rotation speed of the power source.
And the power determining unit is used for inquiring external characteristic data based on the actual rotating speed, and determining the first actual power of the power source, wherein the external characteristic data is used for representing the relation between the power and the rotating speed of the power source.
In some alternative embodiments, the actual displacement acquisition module 703 includes:
and the second rotating speed acquisition unit is used for acquiring the actual rotating speed of the slurry pump.
And the displacement determining unit is used for determining the actual displacement by utilizing the actual rotating speed.
In some alternative embodiments, the apparatus further comprises:
the command acquisition module is used for acquiring a displacement input command, and the displacement input command is used for determining the target displacement.
And the initial working current determining module is used for determining the initial working current of the second pump body based on the target displacement.
And the control module is used for controlling the operation of the second pump body based on the initial operation current.
The control means of the cementing apparatus in this embodiment is presented in the form of functional units, herein referred to as ASIC circuits, processors and memories executing one or more software or fixed programs, and/or other devices that can provide the functionality described above.
Further functional descriptions of the above respective modules and units are the same as those of the above corresponding embodiments, and are not repeated here.
The embodiments of the present invention also provide a computer readable storage medium, and the method according to the embodiments of the present invention described above may be implemented in hardware, firmware, or as a computer code which may be recorded on a storage medium, or as original stored in a remote storage medium or a non-transitory machine readable storage medium downloaded through a network and to be stored in a local storage medium, so that the method described herein may be stored on such software process on a storage medium using a general purpose computer, a special purpose processor, or programmable or special purpose hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, a solid state disk or the like; further, the storage medium may also comprise a combination of memories of the kind described above. It will be appreciated that a computer, processor, microprocessor controller or programmable hardware includes a storage element that can store or receive software or computer code that, when accessed and executed by the computer, processor or hardware, implements the methods illustrated by the above embodiments.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (10)
1. A method of controlling a well cementing apparatus, the method comprising:
acquiring a first actual power of a power source and a second actual power of a first pump body, wherein the power source is used for driving the first pump body and a second pump body, and the second pump body is used for driving the slurry pump to rotate;
determining the maximum power of the second pump body based on the first actual power and the second actual power to obtain the maximum working current of the second pump body;
acquiring the actual displacement of a slurry pump in the well cementation equipment to obtain the differential displacement between the actual displacement and the target displacement of the slurry pump;
and controlling the working current of the second pump body based on the differential displacement and the maximum working current of the second pump body.
2. The method of claim 1, wherein the controlling the operating current of the second pump body based on the differential displacement and a maximum operating current of the second pump body comprises:
acquiring the actual working current of the second pump body;
and if the actual working current is smaller than the maximum working current, controlling the working current of the second pump body based on the differential displacement.
3. The method of claim 2, wherein the controlling the operating current of the second pump body based on the differential displacement comprises:
if the differential displacement is greater than zero, reducing the working current of the second pump body;
and if the differential displacement is smaller than zero, increasing the working current of the second pump body, wherein the increased working current is smaller than the maximum working current.
4. The method of claim 2, wherein the controlling the operating current of the second pump body based on the differential displacement and a maximum operating current of the second pump body comprises:
and if the actual working current is greater than or equal to the maximum working current, adjusting the actual working current to the maximum working current.
5. The method of claim 1, wherein the obtaining the first actual power of the power source comprises:
acquiring the actual rotation speed of the power source;
and inquiring external characteristic data based on the actual rotating speed, and determining the first actual power of the power source, wherein the external characteristic data is used for representing the relation between the power and the rotating speed of the power source.
6. The method of claim 1, wherein the obtaining an actual displacement of a mud pump in the cementing apparatus comprises:
acquiring the actual rotation speed of the slurry pump;
and determining the actual displacement by using the actual rotation speed.
7. The method according to any one of claims 1 to 6, further comprising:
acquiring a displacement input instruction, wherein the displacement input instruction is used for determining the target displacement;
determining an initial operating current of the second pump body based on the target displacement;
and controlling the operation of the second pump body based on the initial operation current.
8. A control device for a well cementing apparatus, the device comprising:
the power acquisition module is used for acquiring first actual power of a power source and second actual power of the first pump body, the power source is used for driving the first pump body and the second pump body, and the second pump body is used for driving the slurry pump to rotate;
the maximum power determining module is used for determining the maximum power of the second pump body based on the first actual power and the second actual power so as to obtain the maximum working current of the second pump body;
the actual displacement acquisition module is used for acquiring the actual displacement of the slurry pump in the well cementation equipment so as to obtain the differential displacement between the actual displacement and the target displacement of the slurry pump;
and the current control module is used for controlling the working current of the second pump body based on the differential displacement and the maximum working current of the second pump body.
9. A cementing apparatus comprising:
the device comprises a power source, a first pump body, a second pump body and a slurry pump, wherein the power source is used for driving the first pump body and the second pump body, and the second pump body is used for driving the slurry pump to rotate;
a controller in communication with the power source, the first pump body, the second pump body, and the mud pump, the controller for performing the control method of the cementing apparatus of any one of claims 1 to 7.
10. A computer readable storage medium having stored thereon computer instructions for causing a computer to perform the method of controlling a cementing apparatus according to any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310478263.2A CN116906304A (en) | 2023-04-27 | 2023-04-27 | Control method and device of well cementation equipment, well cementation equipment and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310478263.2A CN116906304A (en) | 2023-04-27 | 2023-04-27 | Control method and device of well cementation equipment, well cementation equipment and storage medium |
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| CN116906304A true CN116906304A (en) | 2023-10-20 |
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| CN202310478263.2A Pending CN116906304A (en) | 2023-04-27 | 2023-04-27 | Control method and device of well cementation equipment, well cementation equipment and storage medium |
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| Country | Link |
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| CN (1) | CN116906304A (en) |
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