CN212656816U - Continuous measuring device for liquid production capacity of wellhead of oil pumping well - Google Patents
Continuous measuring device for liquid production capacity of wellhead of oil pumping well Download PDFInfo
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- CN212656816U CN212656816U CN202021169419.7U CN202021169419U CN212656816U CN 212656816 U CN212656816 U CN 212656816U CN 202021169419 U CN202021169419 U CN 202021169419U CN 212656816 U CN212656816 U CN 212656816U
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Abstract
The utility model discloses a continuous measuring device for the liquid production of a wellhead of an oil pumping well, which comprises a liquid flowing pressure sensor, an upper dead point and lower dead point position sensor, a digital processing circuit and a data calculating module; the liquid flowing pressure sensor probe is arranged in an oil outlet pipe of a wellhead of the oil pumping well and is used for detecting the liquid flowing pressure change condition in the pipeline; the upper dead point and lower dead point position sensors are arranged at the crank output end of the reduction gearbox of the oil pumping unit and used for detecting the stroke of the plunger pump; digital processing circuit turns into the signal of telecommunication with liquid flow pressure sensor's pressure change signal, sends for data calculation module to this record well head liquid begins to flow and stops the time of flowing, according to the time of beginning to flow and stopping the flow confirm the effective stroke of plunger, and data calculation module multiplies the effective stroke of plunger and plunger cross-sectional area and obtains the liquid production capacity of actual every stroke, the utility model discloses can make things convenient for practical low-cost continuous measurement well head liquid production capacity.
Description
Technical Field
The utility model belongs to the technical field of the oil field is retrieved, concretely relates to oil pumping motor-pumped well head liquid production volume continuous measurement device.
Background
At present, in domestic oil fields, along with the simplification of ground flow, the ground gathering and transportation mostly adopts an oil well series flow, a single-well liquid yield wellhead does not have metering equipment, most oil fields are popularized and applied with a diagram method metering technology to carry out single-well metering of an oil pumping well, the technology can also be used aiming at the calculation result of a normal diagram at present, but the error of the calculated yield of the diagram under special working conditions is larger, the metering result is also influenced by sensor signal drift, data transmission lost points and the like, and the requirement of wellhead metering cannot be ensured.
The document CN201410461091.9 discloses a daily liquid production measuring method for a pumping well based on load force, which combines and uses a series of methods to measure daily liquid production of a single well, but has the following three defects: (1) the measurement period is long, which results in high measurement cost; (2) the manual intervention is more, the manual workload is large, and the efficiency is low; (3) the operating parameters of the pumping unit are frequently adjusted, and the actual work of the pumping unit is influenced.
The file cn201410594739.x discloses a technique for measuring the liquid production capacity by using a power diagram method of a pumping unit, and the technical scheme has the following two defects that (1) the calculation method is simple, and the difference of the liquid production capacity of the pumping unit in different running states cannot be fully considered; (2) stroke loss caused by deformation of a rod column and the like, errors of a rod diagram and a pump diagram and loss in the conversion process are not considered in the calculation process, and therefore the calculation accuracy is low.
The document CN201410461027.0 discloses a daily liquid production measurement method for a pumping well based on electrical parameters, which can realize on-site continuous, automatic and practical measurement of daily liquid production of a single well on a pumping well, but has the following three defects: (1) errors exist in the acquisition of the electrical drawings, so that the calculation is wrong; (2) the operation parameters are frequently adjusted in the acquisition process, so that the manual operation amount is large, and huge cost expenditure is brought; (3) frequent adjustment of the parameters of the lifting equipment also affects the normal production activities of the oil field, which is difficult to achieve in actual work.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a liquid measure continuous measurement device is produced to beam-pumping unit well head, the mode that the flow that pressure sensor test liquid when the liquid that can pass through the beam-pumping unit well head flows combines software to calculate obtains single continuous measurement and the accumulative total metering value of liquid measure is produced to the well head, for oil field single well measurement provides a small, convenient and practical's liquid measure metering mode is produced to the well head.
Realize the technical scheme of the utility model as follows:
a continuous measuring device for the liquid production of a wellhead of an oil pumping well comprises a liquid flow pressure sensor, an upper dead point position sensor, a lower dead point position sensor, a digital processing circuit and a data calculation module;
the liquid flowing pressure sensor probe is arranged in an oil outlet pipe of a wellhead of the oil pumping well and is used for detecting the liquid flowing pressure change condition in the pipeline;
the upper dead point position sensor and the lower dead point position sensor are arranged at the crank output end of the reduction gearbox of the oil pumping unit and are used for detecting the stroke of the plunger pump;
the digital processing circuit converts a pressure change signal of the liquid flow pressure sensor into an electric signal and sends the electric signal to the data calculation module so as to record the time for starting and stopping the flow of liquid at a wellhead, the effective stroke of the plunger is determined according to the time for starting and stopping the flow, and the data calculation module multiplies the effective stroke of the plunger by the cross-sectional area of the plunger to obtain the actual liquid yield of each stroke.
Further, the liquid flow pressure sensor is composed of two semiconductor pressure strain devices.
Further, the device also comprises a control panel, wherein the control panel displays the wellhead liquid production amount calculated by the data calculation module, displays the liquid production amount of each stroke of the pumping well in a 20-glass-pipe liquid column mode, and displays liquid production amount contrast values of 24 hours, previous 7 days and previous 30 days and the accumulated value and liquid production amount curve of the wellhead liquid production amount in different time lengths in an accumulated mode.
Has the advantages that:
(1) the utility model discloses the scheme input cost is low, only needs well head pipeline forced induction flow sensor, crank upper and lower dead point sensor and software calculation circuit.
(2) The utility model discloses the scheme has confirmed plunger effective stroke displacement according to the time that well head liquid begins to flow and stops to flow to the error of invalid stroke to liquid production measurement brought has been avoided.
(3) The utility model discloses the scheme need not artificial intervention, reduces personnel's cost.
(4) The utility model discloses the scheme need not frequently to adjust operating parameter, does not influence actual production work.
(5) The utility model discloses the scheme will produce the liquid measure every day and refine the liquid measure of producing of every stroke, make the measurement of producing the liquid measure more accurate.
(6) The utility model discloses the scheme is because easy operation, input cost are low, need not artificial intervention, reliability height, therefore is fit for extensive the popularization, has the significance to actual production.
Drawings
Fig. 1 is an installation schematic diagram of the pressure sensor of the present invention.
Fig. 2 is an installation schematic diagram of the upper and lower dead point position sensors of the present invention.
Fig. 3 is a schematic view of the control panel of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of examples.
The utility model provides a continuous measuring device of liquid measure is produced to beam-pumping unit well head, including liquid flow pressure sensor, upper and lower dead point position sensor, digital processing circuit and data calculation module.
As shown in fig. 1, an electric signal is sent to a data calculation module through a liquid flow pressure sensor or a switch installed at the wellhead of the rod-pumped well, and time values of the start flow and the stop flow of liquid at the wellhead are recorded, as shown in fig. 2, suspension point position data acquired by a top dead center position sensor and a bottom dead center position sensor installed at the output end of a crank of the rod-pumped well correspond to background software, and accumulated data of liquid output per stroke is calculated for the flow start position to the stop position of the produced liquid of a downhole pump, so that the calculation method of the actual liquid output of the wellhead of the rod-pumped well is obtained.
The flow pressure sensor at the wellhead of the oil pumping well consists of two semiconductor pressure strain devices, and a switch capable of measuring gas is arranged in the process and can sense the flow change of liquid or gas in a pipeline.
The sensing principle of the flow pressure sensor is that a probe immersed in liquid has two devices for sensing the change of liquid pressure during flowing, and when the liquid in a pipeline does not flow, the components sense the liquid pressure of a local pipeline section to be the same, and then the sensor does not work.
When the liquid in the pipe flows, the pressure in the pipe is changed to generate a pressure difference, the control circuit of the sensor adjusts the change of the electrical parameter, and the process can lead the component to give an electrical signal to inform an operator that the liquid starts to flow.
The pressure difference change of the component during liquid flow is calibrated on a test bench, and when the component is in the working state, the component is installed on a test pipeline so as to judge the liquid flow. If a viscosity tester is arranged on the test bed according to the pipeline, the device can sense the gas flowing condition of the plug in the pipeline; therefore, the device can eliminate the error of metering the liquid when the slug gas flows in the pipeline.
The utility model discloses metering device's output calculation principle and method:
1) the device obtains the effective stroke of the plunger through the principle of plunger stroke change, wellhead liquid flow and effective stroke measurement of the plunger by a crank sensor.
2) The calculation principle of the yield of the device is that the working diameter of a plunger pump under a known pumping well and the theoretical stroke of a plunger are known, and the effective stroke of the plunger is obtained through testing and calculation of a crank output shaft sensor (the effective stroke is the theoretical stroke-stroke loss, and the stroke loss is the elongation of a sucker rod of more than 1 thousand meters when the sucker rod is loaded in an up stroke). The area of the plunger is multiplied by the effective stroke to calculate the actual liquid production per stroke.
3) The fluid flow in the wellhead flowline is the same as the effective travel time of the downhole plunger. The wellhead flow pressure sensor is a time signal for the electronic control circuit of the system to calculate the actual stroke of the plunger. The time is compared with the time tested by an output shaft sensor arranged on the speed reducer to determine the effective stroke value. Knowing the effective stroke of the downhole plunger, (which is done by software and control circuitry) the amount of fluid produced per stroke can be calculated according to the following formula;
4) plunger area effective stroke-liquid production per stroke (volume)
Software design of a human-computer interaction interface of a control panel:
1) the amount of fluid produced per stroke is designed.
2) The cumulative amount of liquid produced by pushing forward 24 hours while viewing the panel was designed.
3) The liquid production from starting up power supply to current accumulated production of the oil well is designed.
4) And designing a liquid production process curve formed by the production points of various conditions. And the underground geological change condition can be conveniently analyzed.
Example 1:
the device consists of a produced liquid flowing pressure component of a wellhead oil outlet pipe, a crank output shaft upper dead point and lower dead point position sensor, a digital processing circuit, a data calculation module and a control panel.
The operation and running process comprises the following steps:
1) the diameter of a plunger pump at the lower end of the oil well with the measured liquid amount and the stroke distance of a plunger are input on a control panel. Then inputting the set stroke/minute of the pumping unit.
2) And starting the pumping unit to run. The wellhead flowing pressure component can be switched on and off once when the polish rod of the oil pumping unit reciprocates up and down once each time. The signal from the switch is sent to a digital processing circuit to process the actual stroke time sensed by the crank sensor. The stroke loss is removed, the numerical value of the liquid production amount of each stroke obtained after calculation by using a volume formula is displayed in the liquid collection amount column of each time of the display panel. And meanwhile, calculating the percentage of the current liquid production amount which is the theoretical liquid production amount, and displaying the percentage in a corresponding tube of 20 glass tubes of the display panel.
3) All the calculated single liquid production amounts after the test are added into the 24-hour cumulative liquid production amount and the total liquid production amount from the start-up to the present are respectively displayed in the display fields of the 24-hour liquid production and the total liquid production of the display panel, as shown in fig. 3.
4) All calculated single liquid collection amounts can be taken out of liquid collection values at different times according to the requirements of operators to make a liquid collection amount change curve. The method is used for analyzing the movement trend and the dynamic of the produced fluid of the underground stratum.
The utility model discloses a mode that the pressure part that flows combines software to calculate obtains the measuring value of oil pumping motor-pumped well head liquid production volume to display mode through 20 glass pipes makes the operator can audio-visually obtain the every stroke liquid production volume data of oil pumping motor-pumped well, and provides the long accumulative measurement result when different. The device is suitable for continuous measurement of the liquid production amount of the single well mouth of the pumping well.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A continuous measuring device for the liquid production of a wellhead of an oil pumping well is characterized by comprising a liquid flow pressure sensor, an upper dead point position sensor, a lower dead point position sensor, a digital processing circuit and a data calculation module;
the liquid flowing pressure sensor probe is arranged in an oil outlet pipe of a wellhead of the oil pumping well and is used for detecting the liquid flowing pressure change condition in the pipeline;
the upper dead point position sensor and the lower dead point position sensor are arranged at the crank output end of the reduction gearbox of the oil pumping unit and are used for detecting the stroke of the plunger pump;
the digital processing circuit converts a pressure change signal of the liquid flow pressure sensor into an electric signal and sends the electric signal to the data calculation module so as to record the time for starting and stopping the flow of liquid at a wellhead, the effective stroke of the plunger is determined according to the time for starting and stopping the flow, and the data calculation module multiplies the effective stroke of the plunger by the cross-sectional area of the plunger to obtain the actual liquid yield of each stroke.
2. The apparatus of claim 1, wherein the fluid flow pressure sensor comprises two semiconductor pressure strain devices.
3. The apparatus according to claim 1, further comprising a control panel for displaying the amount of the wellhead fluid produced by the data calculating module, displaying the amount of the wellhead fluid produced per stroke of the rod pumped well in a manner of 20 glass tubing fluid columns, and displaying the comparison values of the amounts of the wellhead fluid produced for 24 hours, previous 7 days and previous 30 days and the accumulated values and the curves of the amounts of the wellhead fluid produced for different time periods in an accumulated manner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021169419.7U CN212656816U (en) | 2020-06-22 | 2020-06-22 | Continuous measuring device for liquid production capacity of wellhead of oil pumping well |
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| CN202021169419.7U CN212656816U (en) | 2020-06-22 | 2020-06-22 | Continuous measuring device for liquid production capacity of wellhead of oil pumping well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894549A (en) * | 2020-06-22 | 2020-11-06 | 哈尔滨市贝特汽车电子器材厂 | Continuous measuring device for liquid production capacity of wellhead of oil pumping well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894549A (en) * | 2020-06-22 | 2020-11-06 | 哈尔滨市贝特汽车电子器材厂 | Continuous measuring device for liquid production capacity of wellhead of oil pumping well |
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Address after: No. 473, xidazhi street, Nangang District, Harbin City, Heilongjiang Province Patentee after: Harbin Bolie Petroleum Technology Center Address before: No. 473, xidazhi street, Nangang District, Harbin City, Heilongjiang Province Patentee before: Harbin Beite automobile electronic equipment factory |
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