CN111594106A - Method and device for automatically keeping pump body submergence of pumping unit and beam-pumping unit - Google Patents
Method and device for automatically keeping pump body submergence of pumping unit and beam-pumping unit Download PDFInfo
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- CN111594106A CN111594106A CN202010418973.2A CN202010418973A CN111594106A CN 111594106 A CN111594106 A CN 111594106A CN 202010418973 A CN202010418973 A CN 202010418973A CN 111594106 A CN111594106 A CN 111594106A
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- pumping unit
- depth
- oil
- sinking
- sinking depth
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
- E21B43/127—Adaptations of walking-beam pump systems
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
- E21B47/024—Determining slope or direction of devices in the borehole
Abstract
The application discloses a method and a device for automatically keeping the sinking degree of a pump body of an oil pumping unit and a beam-pumping unit. In the method, load data of each period of an oil pumping unit is obtained, and an indicator diagram of the corresponding period is determined; calculating and obtaining the working fluid level depth of the oil well according to the indicator diagram; determining the sinking depth of an oil pump of the oil pumping unit according to the pump descending depth of the oil pumping unit and the working fluid level depth of an oil well; and adjusting the stroke frequency of the oil pumping unit according to the sinking depth and the preset value of the sinking depth so as to keep the sinking depth of the oil pump within a reasonable range. In the traditional technology, the liquid level depth and the sinking depth need to be manually measured, and the stroke frequency of the oil pumping unit is manually adjusted, so that the time is prolonged, the reliability is low, and the production efficiency is low; by the method and the device, the liquid level depth of the oil well and the sinking depth of the oil pump are automatically calculated, so that the oil pumping unit is automatically adjusted according to the sinking depth of the oil pump, and the reliability and the production efficiency of a calculation result are improved.
Description
Technical Field
The application relates to the technical field of automatic control, in particular to a method and a device for automatically keeping the sinking degree of a pump body of a pumping unit and a beam-pumping unit.
Background
In the operation of the petroleum pumping unit, the pump body submergence degree is kept within a reasonable numerical range, which is a basic management work in the petroleum production process.
The basic structure of the oil pumping unit can be shown in fig. 1, wherein L represents the lower pump depth and is known data of the oil pumping unit; l is1The liquid level depth of oil in the oil well is represented and needs to be measured; l is2Showing the sinking depth of the oil pump of the pumping unit. In measuring the depth L of the oil well liquid level1Then, the well liquid level depth L is subtracted from the pump-down depth L1Then obtaining the sinking depth L of the oil pump2I.e. L2＝L-L1。
In the existing production management process, the work of analyzing, judging and adjusting the operating condition of the pumping unit after measuring the liquid level depth L1 of oil in an oil well is completed by manual operation. Because the means for measuring the liquid level depth of the oil well is very limited, especially for the pumping unit with a large pump depth, the accuracy of the result of manually measuring the liquid level depth is greatly reduced due to the influence of various factors in the underground. The result of the manual measurement has larger dispersibility, so that the accuracy of the production management personnel for adjusting the working condition of the pumping unit is influenced. This will significantly reduce the efficiency of oil production, resulting in unnecessary cost input for oil production.
Disclosure of Invention
The embodiment of the application provides an automatic maintaining method and device for the sinking degree of a pump body of a pumping unit and a beam pumping unit, which are used for automatically calculating the liquid level depth of an oil well and the sinking depth of an oil pump and automatically adjusting the pumping unit according to the sinking depth of the oil pump.
In a first aspect, an embodiment of the present application provides an automatic method for maintaining a pump body submergence of an oil pumping unit, including:
acquiring load data of each period of the oil pumping unit and determining an indicator diagram of the corresponding period;
determining the depth of the liquid level of the oil well according to the indicator diagram;
determining the sinking depth of the oil pump of the oil pumping unit according to the pump descending depth of the oil pumping unit and the liquid level depth of an oil well;
and adjusting the stroke frequency of the oil pumping unit according to the sinking depth and the preset value of the sinking depth.
In a possible implementation manner, the preset values of the submergence depth include a first preset value of the submergence depth and a second preset value of the submergence depth;
the adjusting the stroke frequency of the oil pumping unit according to the preset values of the sinking depth and the sinking depth comprises the following steps:
if the sinking depth is smaller than the first sinking depth preset value, reducing the stroke frequency of the oil pumping unit;
and if the sinking depth is greater than the second sinking depth preset value, increasing the stroke frequency of the oil pumping unit.
In a possible implementation manner, the adjusting the stroke frequency of the pumping unit according to the submergence depth and the submergence depth preset value includes:
if the sinking depth is smaller than the preset value of the sinking depth, reducing the frequency of stroke of the pumping unit;
and if the sinking depth is greater than the preset value of the sinking depth, increasing the stroke frequency of the oil pumping unit.
In one possible implementation, a load sensor is provided at the suspension point of the pumping unit:
the acquiring of the load data of the oil pumping unit in each period comprises the following steps:
and acquiring load data of the pumping unit in each period from the load sensor.
In a second aspect, an embodiment of the present application provides an automatic retaining device for pump body submergence of an oil pumping unit, including:
the acquisition module is used for acquiring load data of the pumping unit in each period;
the determining module is used for determining an indicator diagram of a corresponding period according to the load data, determining the depth of the liquid level of the oil well according to the indicator diagram, and determining the sinking depth of the oil pump of the oil pumping unit according to the depth of the lower pump of the oil pumping unit and the depth of the liquid level of the oil well;
and the adjusting module is used for adjusting the stroke frequency of the oil pumping unit according to the sinking depth and the preset value of the sinking depth.
In a possible implementation manner, the preset values of the submergence depth include a first preset value of the submergence depth and a second preset value of the submergence depth;
the adjusting module is specifically configured to:
if the sinking depth is smaller than the first sinking depth preset value, reducing the stroke frequency of the oil pumping unit;
and if the sinking depth is greater than the second sinking depth preset value, increasing the stroke frequency of the oil pumping unit.
In a possible implementation manner, the adjusting module is specifically configured to:
if the sinking depth is smaller than the preset value of the sinking depth, reducing the frequency of stroke of the pumping unit;
and if the sinking depth is greater than the preset value of the sinking depth, increasing the stroke frequency of the oil pumping unit.
In one possible implementation, a load sensor is arranged at a suspension point of the oil pumping unit;
the acquisition module is specifically configured to:
and acquiring load data of the pumping unit in each period from the load sensor.
In one possible implementation, the device is provided on the pumping unit.
In a third aspect, an embodiment of the present application provides a beam pumping unit, where the beam pumping unit includes an automatic pump body submergence maintaining device according to any one of the implementation manners of the second aspect.
In the traditional technology, the liquid level depth and the oil pump sinking depth need to be manually measured, and then the stroke frequency of the oil pumping unit is adjusted so as to keep the sinking depth of the oil pump within a proper range; and the time for manually calculating and adjusting the stroke frequency is prolonged, the reliability is low, and the production efficiency is low. By the method and the device, the liquid level depth of the oil well and the sinking depth of the oil pump can be automatically calculated, and then the stroke frequency of the oil pumping unit can be automatically adjusted according to the sinking depth of the oil pump, so that the sinking depth is kept within a reasonable range, and the reliability and the production efficiency of a calculation result are improved compared with manual adjustment.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a basic structure of a pumping unit provided in an embodiment of the present application;
fig. 2 is a schematic flow chart of a method for automatically maintaining the pump body submergence of the pumping unit according to the embodiment of the present application;
fig. 3 is an indicator diagram of an oil pumping unit provided in the embodiment of the present application;
FIG. 4 is a schematic view of an angle measurement provided by an embodiment of the present application;
FIG. 5 is a schematic diagram of a piston force applied to a pumping unit according to an embodiment of the present disclosure;
fig. 6 is one of schematic structural diagrams of an automatic pump body submergence maintaining device of a pumping unit according to an embodiment of the present application;
fig. 7 is a second schematic structural view of an automatic pump body submergence maintaining device of a pumping unit according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an automatic pump body submergence maintaining device of a pumping unit according to an embodiment of the present application.
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 below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to reduce the complexity of manually measuring the liquid level depth of an oil well and manually adjusting the stroke frequency of the oil pumping unit so as to keep the submergence degree of an oil pumping unit in a preset range and avoid the problems of inaccuracy of a measuring result and reduction of production efficiency which are possibly caused by manual measurement, the embodiment of the application provides an automatic submergence depth keeping method and device for a pump body of the oil pumping unit, and the method and device are used for automatically measuring the liquid level depth of the oil well and automatically adjusting the submergence depth of the oil pump.
Referring to fig. 2, a schematic flow chart of a method for automatically maintaining the pump body submergence of an oil pumping unit provided in the embodiment of the present application is shown, where the method may include the following steps:
Optionally, a load sensor is arranged at a suspension point of the pumping unit, so as to conveniently measure real-time load data of each cycle (pumping rod reciprocates once) of the pumping unit.
And then, drawing a indicator diagram corresponding to a period according to the acquired load data of the period. The indicator diagram of the pumping unit is a graph depicting the relation between the suspension point load of the sucker rod and the displacement of the sucker rod of the pumping unit, and as shown in fig. 3, the abscissa represents the displacement of the sucker rod and the ordinate represents the load.
In order to facilitate drawing of the indicator diagram, a beam angle measuring instrument can be further installed at a supporting shaft of the beam of the pumping unit, and the measuring instrument can be used for measuring the angle of the beam of the pumping unit, as shown in fig. 4. According to the beam angle alpha at a certain moment obtained by measurement of the beam angle measuring instrument, the computer can determine the specific position X alpha of the pumping rod suspension point (load sensor) of the pumping unit in operation, and the position X alpha and the load sensor corresponding to the position are used for obtaining the load angle alpha through measurementThe load data combination can determine a certain point in the indicator diagram of the pumping unit. The highest point X in the whole stroke of the oil pumping unitH(corresponding to the beam angle aH) And the lowest point XL(corresponding to the beam angle aL) The load data of all the positions obtained in the above step are plotted into coordinates, so that the indicator diagram shown in fig. 3 can be conveniently obtained.
And step 202, determining the depth of the liquid level of the oil well according to the indicator diagram.
In the ascending process of the sucker rod of the oil pumping unit, the steady-state load F can be obtained by filtering the indicator diagramupThe following explains the steady-state power equation of the suspension point during the pumping unit ascending process with reference to fig. 5 and formula (1):
Fup＝Wg+Ww+f-ffcd(1)
wherein, WgThe total rod system weight (including pump weight) below the suspension point of the pumping unit; wwThe weight of the liquid in the oil pipe of the oil pumping unit; f. ofThe friction force is the sum of the friction force of the oil pumping unit during operation; f. offcdThe dynamic sinking pressure (lifting force to the piston of the pumping unit) below the liquid, which is applied to the piston of the pumping unit in the lifting process;
according to experience, f≈0.1Wg，ffcd≈0.8ffc. Wherein f isfcdIn order to consider the dynamic sinking pressure of the piston of the oil pumping pump after the viscous resistance generated by the fixed valve in the rising process of the oil pumping unit. And ffcThe sinking pressure (static lifting force) that the pumping unit piston receives in the static state can be expressed by the following formula (2):
ffc＝L2.Sb.ρy(2)
wherein S isbRepresenting the cross-sectional area of the piston of the pumping unit; rhoyThe expression is the density of the liquid in the tubing.
Substituting the above factors into equation (1) and arranging to obtain the following equation (3):
in the above formula, FupThe load data (obtained by the load sensor arranged at the suspension point) obtained by real-time measurement of each stroke of the pumping unit are constant. Thus, it can be deduced that:
L1＝k·Fup+C (4)
in the formula (4), the first and second groups,
that is, k and C are both constants.
Through the derivation process, the relation between the oil well liquid level depth and the load data can be determined, so that the oil well liquid level depth can be automatically calculated according to the load data of the pumping unit, and the oil well liquid level depth data does not need to be obtained through a manual measurement method.
It should be understood that the above method and formula for calculating the oil well liquid level depth according to the indicator diagram are only examples, and do not constitute a limitation to the present application, and based on the technical idea of the present application, the oil well liquid level depth may also be calculated by using the indicator diagram in other manners.
And step 203, determining the sinking depth of the oil pump of the oil pumping unit according to the pump descending depth of the oil pumping unit and the liquid level depth of the oil well.
As shown in fig. 1, the pump-down depth represents the depth of the oil pump from the wellhead, which is a known parameter. For an already installed pumping unit, the lower pump depth can be considered as a known constant.
According to the obtained lower pump depth L and the oil well liquid level depth L1With reference to fig. 1, the sinking depth L of the oil pump can be determined2I.e. L2＝L-L1。
And 204, adjusting the stroke frequency of the oil pumping unit according to the sinking depth and the preset value of the sinking depth.
The reasonable range of the sinking depth can be preset according to experience, namely, a corresponding preset value of the sinking depth is determined, and then the stroke frequency of the pumping unit is adjusted according to the current sinking depth and the preset value of the sinking depth, so that the sinking depth is kept in the reasonable range.
The number of strokes represents the number of times the sucker rod of the pumping unit reciprocates up and down every minute. Generally, the larger the stroke frequency of the pumping unit, the more crude oil liquid is pumped; the smaller the number of times of stroke, the less crude oil liquid is extracted, and the more the oil pump is sunk, the key factor is. The stroke frequency of the oil pumping unit should ensure that the pumped oil quantity and the liquid supply quantity below the oil well reach a balanced state as much as possible, and the sinking depth of the oil pump tends to be stable at the moment.
In a possible implementation manner, the preset values of the sinking depth may include a first preset value of the sinking depth and a second preset value of the sinking depth, which respectively represent a lower limit and an upper limit of a reasonable range of the sinking depth, that is, if the current sinking depth is smaller than the first preset value of the sinking depth, the pumping capacity needs to be reduced to increase the sinking depth of the oil pump, that is, the frequency of stroke of the pumping unit is reduced (the rotation speed of the motor is reduced); if the current sinking depth is larger than the second preset depth value, the oil pumping amount needs to be increased so as to reduce the sinking depth of the oil pump, namely, the stroke frequency of the oil pumping unit is increased (the rotating speed of the motor is increased).
Alternatively, the sinking depth may be kept near a preset value, i.e. only one preset value of sinking depth is set. If the current sinking depth is smaller than the preset value of the sinking depth, reducing the stroke frequency of the oil pumping unit; and if the current sinking depth is larger than the preset value of the sinking depth, increasing the stroke frequency of the oil pumping unit.
In the traditional technology, the liquid level depth and the oil pump sinking depth need to be manually measured, and then the stroke frequency of the oil pumping unit is adjusted so as to keep the sinking depth of the oil pump within a proper range; and the time for manually calculating and adjusting the stroke frequency is prolonged, the reliability is low, and the production efficiency is low. By the method, the liquid level depth of the oil well and the sinking depth of the oil pump can be automatically calculated, and then the stroke frequency of the oil pumping unit can be automatically adjusted according to the sinking depth of the oil pump, so that the sinking depth is kept within a reasonable range, and the reliability and the production efficiency of a calculation result are improved compared with manual adjustment.
Based on the same technical concept, the embodiment of the present application further provides an automatic retaining device for the pump body submergence of an oil pumping unit, as shown in fig. 6, the device includes:
an obtaining module 601, configured to obtain load data of each cycle of the pumping unit;
a determining module 602, configured to determine an indicator diagram of a corresponding period according to the load data, and determine a depth of a liquid level of an oil well according to the indicator diagram; determining the sinking depth of an oil pump of the oil pumping unit according to the lower pump depth of the oil pumping unit and the liquid level depth of an oil well;
and an adjusting module 603, configured to adjust the frequency of stroke of the pumping unit according to the sinking depth and the preset value of the sinking depth.
In a possible implementation manner, the preset values of the submergence depth include a first preset value of the submergence depth and a second preset value of the submergence depth;
the adjusting module 603 is specifically configured to:
if the sinking depth is smaller than the first sinking depth preset value, reducing the stroke frequency of the oil pumping unit;
and if the sinking depth is greater than the second sinking depth preset value, increasing the stroke frequency of the oil pumping unit.
In a possible implementation manner, the adjusting module 603 is specifically configured to:
if the sinking depth is smaller than the preset value of the sinking depth, reducing the frequency of stroke of the pumping unit;
and if the sinking depth is greater than the preset value of the sinking depth, increasing the stroke frequency of the oil pumping unit.
In one possible implementation, a load sensor is arranged at a suspension point of the oil pumping unit;
the obtaining module 601 is specifically configured to: and acquiring load data of the pumping unit in each period from the load sensor.
In one possible implementation, the device is arranged on the oil pumping unit to reduce the calculation amount and the calculation time of a remote computer.
It should be noted that the division of each module is only a division of a logic function, and all or part of the actual implementation may be integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in a mode of calling by the processing element through software, and part of the modules can be realized in a mode of hardware.
In an embodiment, a schematic structural diagram of an automatic pump body submergence maintaining device of a pumping unit can also be shown in fig. 7, and the device comprises a load sensor U1 installed on a suspension point of the pumping unit, a load data acquisition unit U2, a submergence comparator U3, a pumping unit controller U4, a pumping unit motor U5 and a walking beam angle measuring instrument U6.
Specifically, the load sensor U1 is used to collect load data of the pumping unit and send the collected load data to the load data collection unit U2.
And the walking beam angle measuring instrument U6 is used for collecting the angle of a walking beam of the oil pumping unit.
The load data acquisition unit U2 is used for drawing the indicator diagram of the oil pumping unit according to the load data and the angle data of the walking beam, calculating the depth of the liquid level of the oil well according to the indicator diagram, and then calculating the sinking depth of the oil pump according to the depth of the liquid level of the oil well and the depth of the lower pump.
The submergence degree comparator U3 is used for comparing the submergence depth with a preset value of the submergence depth (simply referred to as submergence degree), judging the size of the submergence depth, and inputting the comparison result to the oil pumping unit controller U4.
And the oil pumping machine controller U4 is used for adjusting the stroke frequency of the oil pumping machine according to the comparison result. Specifically, if the current sinking depth is smaller than the preset value of the sinking depth, the oil pumping unit controller U4 can reduce the rotating speed of the motor U5 to reduce the stroke frequency of the oil pumping unit, so as to increase the sinking depth; if the current sinking depth is larger than the preset value of the sinking depth, the rotating speed of the motor U5 can be increased by the oil pumping unit controller U4 so as to increase the stroke frequency of the oil pumping unit and further reduce the sinking depth.
In the traditional technology, the liquid level depth and the oil pump sinking depth need to be manually measured, and then the stroke frequency of the oil pumping unit is adjusted so as to keep the sinking depth of the oil pump within a proper range; and the time for manually calculating and adjusting the stroke frequency is prolonged, the reliability is low, and the production efficiency is low. And through the device that this application provided, need not artificial intervention, can realize the submergence degree of automatic calculation oil well liquid level degree of depth and oil pump, and then realize carrying out automatically regulated according to the submergence degree of depth of oil pump to the stroke frequency of beam-pumping unit to make the submergence degree keep in reasonable within range, compare in the reliability and the production efficiency that manual regulation has improved the calculated result.
Based on the same technical concept, the embodiment of the application also provides automatic sinking degree keeping equipment for the pump body of the oil pumping unit, and the equipment is used for realizing the method embodiment. As shown in fig. 7, the apparatus includes: a processor 701, a memory 702, and a communications interface 703.
Specifically, the communication interface is used for acquiring load data. The processor is used for calling a computer program stored in the memory and executing the automatic oil pumping unit pump body submergence degree keeping method in any one of the implementation modes.
In addition, this application embodiment still provides a beam-pumping unit, and this beam-pumping unit includes aforementioned beam-pumping unit pump body submergence degree automatic retaining device or beam-pumping unit pump body submergence degree automatic retaining equipment.
Based on the same technical concept, embodiments of the present application provide a computer-readable storage medium, where computer instructions are stored, and when the instructions are executed on a computer, the instructions cause the computer to execute the automatic oil pumping unit pump body submergence degree maintaining method according to any one of the above-mentioned implementation manners.
It is to be understood that the terms "first," "second," and the like in the description of the present application are used for descriptive purposes only and not for purposes of indicating or implying relative importance, nor for purposes of indicating or implying order.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (10)
1. A method for automatically keeping the sinking degree of a pump body of an oil pumping unit is characterized by comprising the following steps:
acquiring load data of each period of the oil pumping unit and determining an indicator diagram of the corresponding period;
determining the depth of the liquid level of the oil well according to the indicator diagram;
determining the sinking depth of the oil pump of the oil pumping unit according to the pump descending depth of the oil pumping unit and the liquid level depth of an oil well;
and adjusting the stroke frequency of the oil pumping unit according to the sinking depth and the preset value of the sinking depth.
2. The method of claim 1, wherein the preset values of submergence depth comprise a first preset value of submergence depth and a second preset value of submergence depth;
the adjusting the stroke frequency of the oil pumping unit according to the preset values of the sinking depth and the sinking depth comprises the following steps:
if the sinking depth is smaller than the first sinking depth preset value, reducing the stroke frequency of the oil pumping unit;
and if the sinking depth is greater than the second sinking depth preset value, increasing the stroke frequency of the oil pumping unit.
3. The method of claim 1, wherein said adjusting the stroke frequency of the pumping unit according to the preset values of the submergence depth and submergence depth comprises:
if the sinking depth is smaller than the preset value of the sinking depth, reducing the frequency of stroke of the pumping unit;
and if the sinking depth is greater than the preset value of the sinking depth, increasing the stroke frequency of the oil pumping unit.
4. The method of claim 1, wherein a load sensor is provided at a suspension point of the pumping unit:
the acquiring of the load data of the oil pumping unit in each period comprises the following steps:
and acquiring load data of the pumping unit in each period from the load sensor.
5. The utility model provides an automatic holding device of pumping unit pump body submergence degree which characterized in that includes:
the acquisition module is used for acquiring load data of the pumping unit in each period;
the determining module is used for determining an indicator diagram of a corresponding period according to the load data, determining the depth of the liquid level of the oil well according to the indicator diagram, and determining the sinking depth of the oil pump of the oil pumping unit according to the depth of the lower pump of the oil pumping unit and the depth of the liquid level of the oil well;
and the adjusting module is used for adjusting the stroke frequency of the oil pumping unit according to the sinking depth and the preset value of the sinking depth.
6. The apparatus of claim 5, wherein the preset values of submergence depth comprise a first preset value of submergence depth and a second preset value of submergence depth;
the adjusting module is specifically configured to:
if the sinking depth is smaller than the first sinking depth preset value, reducing the stroke frequency of the oil pumping unit;
and if the sinking depth is greater than the second sinking depth preset value, increasing the stroke frequency of the oil pumping unit.
7. The apparatus of claim 5, wherein the adjustment module is specifically configured to:
if the sinking depth is smaller than the preset value of the sinking depth, reducing the frequency of stroke of the pumping unit;
and if the sinking depth is greater than the preset value of the sinking depth, increasing the stroke frequency of the oil pumping unit.
8. The apparatus of claim 5, wherein a load sensor is provided at a suspension point of the pumping unit:
the acquisition module is specifically configured to:
and acquiring load data of the pumping unit in each period from the load sensor.
9. The apparatus of claim 5, wherein the apparatus is disposed on the pumping unit.
10. A beam-pumping unit, characterized in that it comprises an automatic pump body submergence maintaining device according to any one of claims 5 to 9.
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| CN202010418973.2A CN111594106A (en) | 2020-05-18 | 2020-05-18 | Method and device for automatically keeping pump body submergence of pumping unit and beam-pumping unit |
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| CN202010418973.2A CN111594106A (en) | 2020-05-18 | 2020-05-18 | Method and device for automatically keeping pump body submergence of pumping unit and beam-pumping unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116838323B (en) * | 2023-08-04 | 2023-12-05 | 大庆石油管理局有限公司 | Tower type pumping unit safety protection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116838323B (en) * | 2023-08-04 | 2023-12-05 | 大庆石油管理局有限公司 | Tower type pumping unit safety protection method |
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