CN112526874B - Method and device for controlling water blending amount of oil well - Google Patents
Method and device for controlling water blending amount of oil well Download PDFInfo
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- CN112526874B CN112526874B CN201910881890.4A CN201910881890A CN112526874B CN 112526874 B CN112526874 B CN 112526874B CN 201910881890 A CN201910881890 A CN 201910881890A CN 112526874 B CN112526874 B CN 112526874B
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- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
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Abstract
The invention provides a method for controlling the water mixing amount of an oil well, which comprises the steps of obtaining the back pressure and the outlet liquid temperature of the oil well corresponding to the oil well; determining the total liquid outlet amount corresponding to the oil well according to the oil well back pressure and the liquid outlet temperature; determining the total amount of the water blended corresponding to the oil well according to the outlet liquid temperature, the preset standard back pressure corresponding to the oil well and the outlet liquid total amount; determining valve opening information of a water mixing control valve corresponding to the oil well according to the total water mixing amount; and sending the opening information of the valve to the water mixing control valve so that the water mixing control valve can control the water mixing amount of the oil well according to the opening information of the valve. In the embodiment of the invention, the water blending amount of the oil well can be determined according to the oil well back pressure and the outlet liquid temperature corresponding to the oil well, and the water blending control valve is controlled to blend water according to the water blending amount, so that the accuracy of the water blending amount of the water in the crude oil is improved.
Description
Technical Field
The invention relates to the technical field of oil well exploitation, in particular to a method and a device for controlling the water doping amount of an oil well.
Background
Because the viscosity of crude oil in different oil wells or at different well depths of the same oil well is different due to different geological structures, the crude oil is difficult to transport due to high viscosity and poor fluidity of the crude oil during the transportation process of the crude oil, and therefore, water needs to be added into a circulation pipeline on the ground corresponding to each oil well according to the actual downhole condition of each oil well so as to reduce the viscosity of the crude oil.
In the prior art, water is collected and transported to a single well site through a pipeline by a collecting and transporting combined station, and the water passes through an installed water nozzle on the single well site and then is mixed into a crude oil transporting pipeline corresponding to the single well.
The inventor finds that at least the following problems exist in the prior art:
the water mixing amount is required to be adjusted because the required water amount is changed due to the difference of temperature and the viscosity of crude oil at the bottom of a well, but the water mixing amount cannot be determined and automatically adjusted according to parameters influencing crude oil transportation by the existing water nozzle with a single size installed on a single well site, so that the water mixing amount is inaccurate.
Disclosure of Invention
In view of this, the embodiment of the invention provides a method and a device for controlling the water doping amount of an oil well, and the accuracy of the water doping amount of crude oil is improved. The technical scheme is as follows:
the embodiment of the invention provides a method for controlling the water doping amount of an oil well, which comprises the following steps:
acquiring oil well back pressure and liquid outlet temperature corresponding to an oil well;
determining the total liquid output amount corresponding to the oil well according to the oil well back pressure and the liquid output temperature;
determining the total amount of the water blended corresponding to the oil well according to the outlet liquid temperature, the preset standard back pressure corresponding to the oil well and the outlet liquid total amount;
determining valve opening information of a water mixing control valve corresponding to the oil well according to the total water mixing amount;
and sending the opening information of the valve to the water mixing control valve so that the water mixing control valve can control the water mixing amount of the oil well according to the opening information of the valve.
Optionally, the determining the total effluent amount corresponding to the oil well according to the oil well back pressure and the effluent temperature includes:
and searching the total effluent amount corresponding to the oil well back pressure and the effluent temperature by using a target relation model, wherein the target relation model comprises the following steps: and the corresponding relation between the oil well back pressure and the total liquid output amount corresponding to the oil wells at different liquid output temperatures.
Optionally, the process of establishing the target relationship model includes:
obtaining the sample liquid outlet temperature of at least one oil well;
for each sample liquid outlet temperature in the sample liquid outlet temperatures of the at least one oil well, acquiring the total amount of a plurality of samples liquid outlet corresponding to the sample liquid outlet temperature;
for each sample liquid outlet total amount at each sample liquid outlet temperature, acquiring the oil well back pressure corresponding to the sample liquid outlet total amount according to the sample liquid outlet temperature and the sample liquid outlet total amount;
and correspondingly storing the total liquid output amount of each sample at the liquid output temperature of each sample and the corresponding back pressure of the oil well to obtain the target relation model.
Optionally, the obtaining, for each sample liquid output amount at each sample liquid output temperature, the oil well back pressure corresponding to the sample liquid output amount according to the sample liquid output temperature and the sample liquid output amount includes:
acquiring sample end pressure of a flowline of the oil well at each sample effluent temperature;
and determining the sample oil well back pressure corresponding to each sample liquid output total amount at each sample liquid output temperature of the oil well according to the sample tail end pressure, the corresponding sample liquid output temperature and each sample liquid output total amount at the sample liquid output temperature.
Optionally, the obtaining of the sample effluent temperature of at least one of the oil wells includes:
acquiring a minimum sample liquid outlet temperature of a preset maximum sample liquid outlet temperature;
and determining the sample liquid outlet temperature of at least one oil well according to a preset interval between the maximum sample liquid outlet temperature and the minimum liquid outlet temperature.
Optionally, the obtaining, for each sample liquid outlet temperature in the sample liquid outlet temperatures of the at least one oil well, a total amount of a plurality of sample liquid outlets corresponding to the sample liquid outlet temperature includes:
acquiring the preset maximum sample liquid outlet total amount and the preset minimum sample liquid outlet total amount;
obtaining a plurality of sample liquid outlet amounts between the maximum sample liquid outlet amount and the minimum liquid outlet amount according to a preset interval;
and corresponding each sample liquid outlet temperature in the sample liquid outlet temperatures of the at least one oil well to the total amount of the plurality of sample liquid outlets to obtain the total amount of the plurality of sample liquid outlets corresponding to the sample liquid outlet temperature.
Optionally, the determining the total amount of the water blended corresponding to the oil well according to the effluent temperature, the preset standard back pressure corresponding to the oil well and the effluent total amount includes:
determining the standard total liquid output amount corresponding to the oil well according to the liquid output temperature and the preset standard back pressure corresponding to the oil well;
and (4) making a difference between the standard effluent total amount and the effluent total amount, and determining the water blending total amount corresponding to the oil well.
Optionally, the determining, according to the total water blending amount, valve opening information of the water blending control valve corresponding to the oil well includes:
determining a water mixing control valve corresponding to the oil well;
acquiring a corresponding relation table of the preset watering total amount and the valve opening information of the watering control valve;
and searching the valve opening information corresponding to the total watering amount in the corresponding relation table, and taking the valve opening information as the valve opening information of the watering control valve corresponding to the oil well.
The embodiment of the invention provides a device for controlling the water mixing amount of an oil well, which comprises:
the acquisition module is used for acquiring the oil well back pressure and the effluent temperature corresponding to the oil well;
the first determining module is used for determining the total liquid output amount corresponding to the oil well according to the oil well back pressure and the liquid output temperature;
the second determination module is used for determining the total water blending amount corresponding to the oil well according to the liquid outlet temperature, the preset standard back pressure corresponding to the oil well and the liquid outlet amount;
the third determining module is used for determining the valve opening information of the water mixing control valve corresponding to the oil well according to the total water mixing amount;
and the sending module is used for sending the opening information of the valve to the water mixing control valve so that the water mixing control valve can control the water mixing amount of the oil well according to the opening information of the valve.
Optionally, the first determining module is configured to:
and searching the total liquid output amount corresponding to the oil well back pressure and the liquid output temperature by using a target relation model, wherein the target relation model comprises the following steps: the corresponding relation between the oil well back pressure and the total liquid output amount corresponding to the oil wells at different liquid output temperatures.
Optionally, the apparatus further comprises:
an establishment module to: obtaining the sample liquid outlet temperature of at least one oil well;
for each sample liquid outlet temperature in the sample liquid outlet temperatures of at least one oil well, acquiring the total amount of a plurality of sample liquid outlets corresponding to the sample liquid outlet temperature;
for each sample liquid output total amount at each sample liquid output temperature, obtaining the oil well back pressure corresponding to the sample liquid output total amount according to the sample liquid output temperature and the sample liquid output total amount;
and correspondingly storing the total liquid output amount of each sample at the liquid output temperature of each sample and the corresponding back pressure of the oil well to obtain a target relation model.
Optionally, the establishing module is further configured to:
acquiring the sample tail end pressure of an oil outlet pipeline of the oil well at the liquid outlet temperature of each sample;
and determining the sample oil well back pressure corresponding to the total liquid outlet amount of each sample at the liquid outlet temperature of each sample of the oil well according to the tail end pressure of the sample, the corresponding sample liquid outlet temperature and the total liquid outlet amount of each sample at the liquid outlet temperature of the sample.
Optionally, the establishing module is further configured to:
acquiring a minimum sample liquid outlet temperature of a preset maximum sample liquid outlet temperature;
and determining the sample liquid outlet temperature of at least one oil well according to a preset interval between the maximum sample liquid outlet temperature and the minimum liquid outlet temperature.
Optionally, the establishing module is further configured to:
acquiring the preset maximum sample liquid outlet total amount and the preset minimum sample liquid outlet total amount;
obtaining a plurality of sample liquid outlet total amounts between the maximum sample liquid outlet total amount and the minimum liquid outlet total amount according to a preset interval;
and corresponding each sample liquid outlet temperature in the sample liquid outlet temperatures of at least one oil well to the total amount of the plurality of samples liquid outlet to obtain the total amount of the plurality of samples liquid outlet corresponding to the sample liquid outlet temperature.
The second determining module is further configured to:
determining the standard effluent total amount corresponding to the oil well according to the effluent temperature and the preset standard back pressure corresponding to the oil well;
and (4) making a difference between the standard effluent total amount and the effluent total amount to determine the corresponding water blending total amount of the oil well.
The third determining module is further configured to:
determining a water mixing control valve corresponding to the oil well;
acquiring a corresponding relation table of preset watering total amount and valve opening information of a watering control valve;
and searching valve opening information corresponding to the total water mixing amount in the corresponding relation table, and taking the valve opening information as the valve opening information of the water mixing control valve corresponding to the oil well.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the invention provides a method for controlling the water mixing amount of an oil well, which comprises the steps of obtaining the back pressure and the outlet liquid temperature of the oil well corresponding to the oil well; determining the total liquid output amount corresponding to the oil well according to the oil well back pressure and the liquid output temperature; determining the total amount of the doped water corresponding to the oil well according to the outlet liquid temperature, the preset standard back pressure corresponding to the oil well and the outlet liquid total amount; determining valve opening information of a water mixing control valve corresponding to the oil well according to the total water mixing amount; and sending the opening information of the valve to the water mixing control valve so that the water mixing control valve can control the water mixing amount of the oil well according to the opening information of the valve. In the embodiment of the invention, the water doping amount of the oil well can be determined according to the oil well back pressure and the outlet liquid temperature corresponding to the oil well, and the water doping control valve is controlled to dope water according to the water doping amount, so that the accuracy of the water doping amount of the water into the crude oil is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of an implementation environment related to a method for controlling water content in an oil well according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a method for controlling the water content in an oil well according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a method for controlling water entrainment in an oil well according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a method for building a target relationship model according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an embodiment of the present invention providing a well water cut control device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of an implementation environment related to a method for controlling water injection amount of an oil well according to an embodiment of the present invention, and referring to fig. 1, the implementation environment may include at least one pressure sensor 11, at least one temperature sensor 12, at least one remote terminal 13, a water injection amount remote adjusting platform 14, and at least one water injection control valve 15. The at least one pressure sensor 11 and the at least one temperature sensor 12 are respectively connected with a remote terminal 13 in a wireless or wired mode, and the remote terminal 13 is connected with the water mixing amount remote adjusting platform 14 in a wired or wireless mode.
At least one pressure sensor 11 is used for detecting the pressure of the oil well, and at least one temperature sensor 102 is used for detecting the output liquid temperature of the output liquid of the oil well.
And the remote terminal 13 is used for receiving data sent by the pressure sensor and the temperature sensor, receiving valve opening information sent by the water mixing amount remote adjusting platform 14 and sending the valve opening information to the water mixing control valve 15, wherein one remote terminal 13 can manage a plurality of oil wells.
The water-blending remote adjusting platform 14 is used for determining the total liquid outlet amount corresponding to the oil well according to the oil well back pressure and the liquid outlet temperature; determining the total amount of the doped water corresponding to the oil well according to the outlet liquid temperature, the preset standard back pressure corresponding to the oil well and the outlet liquid total amount; and determining the valve opening information of the water mixing control valve corresponding to the oil well according to the total water mixing amount.
And the water mixing control valve 15 is used for controlling the water mixing amount of the oil well according to the opening information of the valve.
An exemplary embodiment of the present invention provides a method for controlling water content in an oil well, as shown in fig. 2, the processing flow of the method may include the following steps:
s101, acquiring oil well back pressure and effluent temperature corresponding to an oil well;
s102, determining the total liquid output amount corresponding to the oil well according to the oil well back pressure and the liquid output temperature;
step S103, determining the total water blending amount corresponding to the oil well according to the liquid outlet temperature, the preset standard back pressure corresponding to the oil well and the liquid outlet amount;
step S104, determining the valve opening information of a water mixing control valve corresponding to the oil well according to the total water mixing amount;
and step S105, sending the opening information of the valve to a water mixing control valve so that the water mixing control valve can control the water mixing amount of the oil well according to the opening information of the valve.
The embodiment of the invention provides a method for controlling the water doping amount of an oil well, which comprises the steps of obtaining the back pressure and the effluent temperature of the oil well corresponding to the oil well; determining the total liquid output amount corresponding to the oil well according to the oil well back pressure and the liquid output temperature; determining the total amount of the water blended corresponding to the oil well according to the liquid outlet temperature, the preset standard back pressure corresponding to the oil well and the liquid outlet total amount; determining valve opening information of a water mixing control valve corresponding to the oil well according to the total water mixing amount; and sending the opening information of the valve to the water mixing control valve so that the water mixing control valve can control the water mixing amount of the oil well according to the opening information of the valve. In the embodiment of the invention, the water blending amount of the oil well can be determined according to the oil well back pressure and the outlet liquid temperature corresponding to the oil well, and the water blending control valve is controlled to blend water according to the water blending amount, so that the accuracy of the water blending amount of the water in the crude oil is improved.
Optionally, determining the total effluent amount corresponding to the oil well according to the oil well back pressure and effluent temperature, including:
and searching the total liquid output amount corresponding to the oil well back pressure and the liquid output temperature by using a target relation model, wherein the target relation model comprises the following steps: and the corresponding relation between the back pressure of the oil well corresponding to the oil wells at different liquid outlet temperatures and the total liquid outlet amount.
Optionally, the process of establishing the target relationship model includes:
obtaining the sample effluent temperature of at least one oil well;
for each sample liquid outlet temperature in the sample liquid outlet temperatures of at least one oil well, acquiring the total amount of a plurality of sample liquid outlets corresponding to the sample liquid outlet temperature;
for each sample liquid outlet total amount at each sample liquid outlet temperature, acquiring the oil well back pressure corresponding to the sample liquid outlet total amount according to the sample liquid outlet temperature and the sample liquid outlet total amount;
and correspondingly storing the total liquid output amount of each sample at the liquid output temperature of each sample and the corresponding back pressure of the oil well to obtain a target relation model.
Optionally, for each sample liquid output amount at each sample liquid output temperature, obtaining the oil well back pressure corresponding to the sample liquid output amount according to the sample liquid output temperature and the sample liquid output amount, including:
acquiring the sample tail end pressure of an oil outlet pipeline of the oil well at the liquid outlet temperature of each sample;
and determining the sample oil well back pressure corresponding to the total liquid outlet amount of each sample at the liquid outlet temperature of each sample of the oil well according to the tail end pressure of the sample, the corresponding sample liquid outlet temperature and the total liquid outlet amount of each sample at the liquid outlet temperature of the sample.
Optionally, obtaining a sample fluid temperature of at least one oil well comprises:
acquiring a minimum sample liquid outlet temperature of a preset maximum sample liquid outlet temperature;
and determining the sample liquid outlet temperature of at least one oil well according to a preset interval between the maximum sample liquid outlet temperature and the minimum liquid outlet temperature.
Optionally, for each sample liquid outlet temperature in the sample liquid outlet temperatures of the at least one oil well, obtaining a total amount of the plurality of sample liquid outlets corresponding to the sample liquid outlet temperature, including:
acquiring the preset maximum sample liquid outlet total amount and the preset minimum sample liquid outlet total amount;
obtaining a plurality of sample liquid outlet total amounts between the maximum sample liquid outlet total amount and the minimum liquid outlet total amount according to a preset interval;
and corresponding each sample liquid outlet temperature in the sample liquid outlet temperatures of at least one oil well to the total amount of the plurality of sample liquid outlets to obtain the total amount of the plurality of sample liquid outlets corresponding to the sample liquid outlet temperature.
Optionally, the method for determining the total amount of the water blended corresponding to the oil well according to the standard back pressure and the total amount of the discharged liquid corresponding to the preset oil well comprises the following steps:
determining the standard effluent total amount corresponding to the oil well according to the effluent temperature and the preset standard back pressure corresponding to the oil well;
and (4) making a difference between the standard effluent total amount and the effluent total amount to determine the corresponding water blending total amount of the oil well.
Optionally, determining valve opening information of the water mixing control valve corresponding to the oil well according to the total water mixing amount includes:
determining a water mixing control valve corresponding to an oil well;
acquiring a corresponding relation table of preset watering total amount and valve opening information of a watering control valve;
and searching valve opening information corresponding to the total water mixing amount in the corresponding relation table, and taking the valve opening information as the valve opening information of the water mixing control valve corresponding to the oil well.
All the above-mentioned optional technical solutions can be combined arbitrarily to form the optional embodiments of the present invention, and are not described herein again.
An exemplary embodiment of the present invention provides a method for controlling water injection in an oil well, as shown in fig. 3, the process flow of the method may include the following steps:
and step S201, acquiring the back pressure and the effluent temperature of the oil well corresponding to the oil well.
It should be noted that the wellhead of the oil well is provided with a pressure sensor and a temperature sensor, the pressure sensor and the temperature sensor can collect data information every preset time, and in order to accurately control the water mixing control valve corresponding to the oil well, the corresponding relationship among the oil well identifier, the pressure sensor, the temperature sensor and the water mixing control valve corresponding to the oil well can be stored in advance, so that the water mixing control valve to be controlled can be accurately determined.
In the embodiment of the invention, the oil well back pressure of the wellhead of the oil well is collected through the pressure sensor, the liquid outlet temperature is collected through the temperature sensor, and the liquid outlet temperature refers to the temperature of the crude oil after water is blended.
Step S202, searching the total liquid outlet amount corresponding to the oil well back pressure and the liquid outlet temperature by using a target relation model, wherein the target relation model comprises the following steps: the corresponding relation between the oil well back pressure and the total liquid output amount corresponding to the oil wells at different liquid output temperatures.
In the embodiment of the invention, the corresponding relation among the oil well back pressure, the liquid outlet temperature and the liquid outlet total amount of the same oil well is stored in the target relation model, and when the oil well back pressure and the liquid outlet temperature corresponding to the oil well are obtained, the liquid outlet total amount corresponding to the oil well back pressure and the liquid outlet temperature can be searched in the target relation model.
It should be noted that when the oil well back pressure and the liquid outlet temperature corresponding to the oil well are obtained, and the same oil well back pressure or liquid outlet temperature cannot be found in the target relationship model, the liquid outlet total amount corresponding to the closest oil well back pressure and the closest liquid outlet temperature is found, and the liquid outlet total amount is used as the liquid outlet total amount corresponding to the oil well.
In the embodiment of the present invention, the control of the water blending control valve corresponding to one oil well is taken as an example, and when the control valves corresponding to a plurality of oil wells need to be controlled simultaneously, the corresponding relationship among the oil well back pressure, the effluent temperature, and the effluent total amount of each of the plurality of oil wells needs to be stored in the target relational model.
The process of establishing the target relationship model is shown in steps S301-S305.
And S203, determining the standard liquid output total amount corresponding to each oil well according to the liquid output temperature and the preset standard back pressure corresponding to each oil well.
In order to determine the standard back pressure corresponding to each oil well, the identification of the oil well is stored in correspondence with the preset standard back pressure corresponding to the oil well.
In the embodiment of the invention, after the standard back pressure and the effluent temperature corresponding to the oil well are obtained, the effluent total amount corresponding to the standard back pressure and the effluent temperature can be searched in the target relation model, and the searched corresponding effluent total amount is used as the standard effluent total amount.
The step of searching the total liquid outlet amount corresponding to the standard back pressure and the liquid outlet temperature is similar to the step of searching in the step S202, and is not repeated.
And step S204, determining the total amount of the water blended corresponding to the oil well by taking the difference between the standard total amount of the discharged liquid and the total amount of the discharged liquid.
It should be noted that the total amount of water is the total amount of water in a sampling period, the sampling period is the sampling period of the pressure sensor and the temperature sensor, and the sampling period may be set to 1 second.
And step S205, determining a water mixing control valve corresponding to the oil well.
In the embodiment of the invention, when the pressure sensor and the temperature sensor send the collected data, the identification information of the pressure sensor and the identification information of the temperature sensor are carried, and the water mixing control valve corresponding to the oil well can be determined by pre-storing the corresponding relation among the oil well identification, the pressure sensor, the temperature sensor and the water mixing control valve corresponding to the oil well.
And step S206, acquiring a corresponding relation table of the preset total watering amount and the valve opening information of the watering control valve.
In the embodiment of the invention, in order to determine the valve opening information of the watering control valve, the corresponding relation between the total watering amount and the valve opening information of the watering control valve is stored in the watering remote adjusting platform in advance, wherein the valve opening information refers to the size of the valve opening angle.
And step S207, searching valve opening information corresponding to the total watering amount in the corresponding relation table, and taking the valve opening information as the valve opening information of the watering control valve corresponding to the oil well.
In the embodiment of the invention, the same total amount of the water can be searched in the corresponding relation table, the valve opening information corresponding to the total amount of the water can be obtained,
when the same total amount of the doped water cannot be searched in the corresponding relation table, the closest doped water amount to the doped water amount can be searched, and the valve opening information corresponding to the closest doped water amount can be searched according to the closest doped water amount to the doped water amount.
And step S208, sending the opening information of the valve to a water mixing control valve so that the water mixing control valve can control the water mixing amount of the oil well according to the opening information of the valve.
It should be noted that, in order to avoid frequent adjustment of the water blending control valve, a back pressure threshold of the oil well may be preset, after step S201, when the difference between the collected back pressure of the oil well and the standard back pressure corresponding to the oil well is smaller than the back pressure threshold, step S201 is executed, and when the difference between the collected back pressure of the oil well and the standard back pressure corresponding to the oil well is larger than the back pressure threshold, step S202 is executed.
The invention provides a method for controlling the water mixing amount of an oil well, which comprises the steps of obtaining the back pressure and the outlet liquid temperature of the oil well corresponding to the oil well; determining the total liquid output amount corresponding to the oil well according to the oil well back pressure and the liquid output temperature; determining the total amount of the water blended corresponding to the oil well according to the liquid outlet temperature, the preset standard back pressure corresponding to the oil well and the liquid outlet total amount; determining valve opening information of a water mixing control valve corresponding to the oil well according to the total water mixing amount; and sending the opening information of the valve to the water mixing control valve so that the water mixing control valve controls the water mixing amount of the oil well according to the opening information of the valve. In the embodiment of the invention, the water blending amount of the oil well can be determined according to the oil well back pressure and the outlet liquid temperature corresponding to the oil well, and the water blending control valve is controlled to blend water according to the water blending amount, so that the accuracy of the water blending amount of the water in the crude oil is improved.
An exemplary embodiment of the present invention provides a method for establishing a target relationship model, as shown in fig. 4, a processing flow of the method may include the following steps:
step S301, obtaining the sample liquid outlet temperature of at least one oil well.
Wherein, obtain the sample play liquid temperature of at least one oil well, include:
acquiring a minimum sample liquid outlet temperature of a preset maximum sample liquid outlet temperature; and determining the sample liquid outlet temperature of at least one oil well according to a preset interval between the maximum sample liquid outlet temperature and the minimum liquid outlet temperature.
It should be noted that the maximum sample outlet temperature and the minimum sample outlet temperature are preset, and the sample outlet temperature of at least one oil well can be acquired at preset intervals within the range of the minimum sample outlet temperature and the maximum sample outlet temperature.
Step S302, for each sample liquid outlet temperature in the sample liquid outlet temperatures of at least one oil well, obtaining the total amount of a plurality of sample liquid outlets corresponding to the sample liquid outlet temperature.
Wherein, for each sample liquid outlet temperature in the sample liquid outlet temperatures of at least one oil well, obtaining the total amount of a plurality of sample liquid outlets corresponding to the sample liquid outlet temperature, comprises:
acquiring a preset maximum sample liquid outlet total amount and a preset minimum sample liquid outlet total amount; obtaining a plurality of sample liquid outlet amounts between the maximum sample liquid outlet amount and the minimum liquid outlet amount according to a preset interval; and corresponding each sample liquid outlet temperature in the sample liquid outlet temperatures of at least one oil well to the total amount of the plurality of samples liquid outlet to obtain the total amount of the plurality of samples liquid outlet corresponding to the sample liquid outlet temperature.
In the embodiment of the invention, the corresponding relation between the plurality of groups of sample liquid outlet temperatures and the total amount of the sample liquid outlet can be obtained through the method, and the corresponding relation comprises the sample liquid outlet amounts corresponding to different sample liquid outlet temperatures and also comprises the total amount of the sample liquid outlet corresponding to the same sample liquid outlet temperature.
Step S303, acquiring the sample end pressure of the oil outlet pipeline of the oil well at the liquid outlet temperature of each sample.
In the embodiment of the invention, the sample end pressure of the oil outlet line at each sample liquid outlet temperature is preset, the sample liquid outlet temperature and the sample end pressure of the oil outlet line are correspondingly stored, and the corresponding sample end pressure of the oil outlet line can be found through the sample liquid outlet temperature.
Step S304, determining the sample oil well back pressure corresponding to each sample liquid output total amount at each sample liquid output temperature of the oil well according to the sample end pressure, the corresponding sample liquid output temperature and each sample liquid output total amount at the sample liquid output temperature.
In the embodiment of the present invention, the density, viscosity, gasoline ratio, and length, pipe diameter, and heat transfer coefficient of the oil outlet line of the preset crude oil are obtained, and the first sample pressure is calculated according to the density, viscosity, gasoline ratio, and length, pipe diameter, and heat transfer coefficient of the oil outlet line, the sample liquid outlet temperature, and the total sample liquid outlet amount at the sample liquid outlet temperature, for example: and inputting the parameters into the Pipephase software to obtain a first sample pressure, and adding the first sample pressure and the sample tail end pressure to obtain the corresponding sample oil well back pressure.
And S305, correspondingly storing the total liquid output amount of each sample at the liquid output temperature of each sample and the corresponding oil well back pressure to obtain a target relation model.
Fig. 5 is a water mixing amount control device for an oil well, which is provided by an embodiment of the invention and comprises:
the acquiring module 401 is configured to acquire oil well back pressure and effluent temperature corresponding to an oil well;
the first determining module 402 is used for determining the total liquid output amount corresponding to the oil well according to the oil well back pressure and the liquid output temperature;
the second determining module 403 is configured to determine the total amount of water blended corresponding to the oil well according to the effluent temperature, the preset standard back pressure corresponding to the oil well, and the effluent total amount;
a third determining module 404, configured to determine valve opening information of a water blending control valve corresponding to the oil well according to the total amount of water blending;
and the sending module 405 is configured to send the valve opening information to the watering control valve, so that the watering control valve controls the watering amount of the oil well according to the valve opening information.
Optionally, the first determining module 402 is configured to:
and searching the total liquid output amount corresponding to the oil well back pressure and the liquid output temperature by using a target relation model, wherein the target relation model comprises the following steps: and the corresponding relation between the back pressure of the oil well corresponding to the oil wells at different liquid outlet temperatures and the total liquid outlet amount.
Optionally, the apparatus further comprises:
a setup module 406 configured to: obtaining the sample liquid outlet temperature of at least one oil well;
for each sample liquid outlet temperature in the sample liquid outlet temperatures of at least one oil well, acquiring the total amount of a plurality of sample liquid outlets corresponding to the sample liquid outlet temperature;
for each sample liquid output total amount at each sample liquid output temperature, obtaining the oil well back pressure corresponding to the sample liquid output total amount according to the sample liquid output temperature and the sample liquid output total amount;
and correspondingly storing the total liquid output amount of each sample at the liquid output temperature of each sample and the corresponding oil well back pressure to obtain a target relation model.
Optionally, the establishing module 406 is further configured to:
acquiring the sample tail end pressure of an oil outlet pipeline of the oil well at the liquid outlet temperature of each sample;
and determining the sample oil well back pressure corresponding to the total liquid outlet amount of each sample at the liquid outlet temperature of each sample of the oil well according to the tail end pressure of the sample, the corresponding sample liquid outlet temperature and the total liquid outlet amount of each sample at the liquid outlet temperature of the sample.
Optionally, the establishing module 406 is further configured to:
acquiring a minimum sample liquid outlet temperature of a preset maximum sample liquid outlet temperature;
and determining the sample liquid outlet temperature of at least one oil well according to a preset interval between the maximum sample liquid outlet temperature and the minimum liquid outlet temperature.
Optionally, the establishing module 406 is further configured to:
acquiring a preset maximum sample liquid outlet total amount and a preset minimum sample liquid outlet total amount;
obtaining a plurality of sample liquid outlet amounts between the maximum sample liquid outlet amount and the minimum liquid outlet amount according to a preset interval;
and corresponding each sample liquid outlet temperature in the sample liquid outlet temperatures of at least one oil well to the total amount of the plurality of sample liquid outlets to obtain the total amount of the plurality of sample liquid outlets corresponding to the sample liquid outlet temperature.
The second determining module 403 is further configured to:
determining the standard total liquid output amount corresponding to the oil well according to the liquid output temperature and the preset standard back pressure corresponding to the oil well;
and (4) making a difference between the standard effluent total amount and the effluent total amount to determine the corresponding water blending total amount of the oil well.
The third determining module 404 is further configured to:
determining a water mixing control valve corresponding to an oil well;
acquiring a corresponding relation table of preset watering total amount and valve opening information of a watering control valve;
and searching valve opening information corresponding to the total water mixing amount in the corresponding relation table, and taking the valve opening information as the valve opening information of the water mixing control valve corresponding to the oil well.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the computer-readable storage medium may be a read-only memory, a magnetic or optical disk, and the like.
The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit 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 method for controlling water entrainment in an oil well, said method comprising:
acquiring oil well back pressure and liquid outlet temperature corresponding to an oil well;
determining the total liquid output amount corresponding to the oil well according to the oil well back pressure and the liquid output temperature, wherein the step of determining the total liquid output amount corresponding to the oil well comprises the following steps: and searching the total effluent amount corresponding to the oil well back pressure and the effluent temperature by using a target relation model, wherein the target relation model comprises the following steps: the corresponding relation between the oil well back pressure and the total liquid output amount corresponding to the oil wells at different liquid output temperatures;
determining the total water blending amount corresponding to the oil well according to the outlet liquid temperature, the preset standard back pressure corresponding to the oil well and the outlet liquid total amount, wherein the method comprises the following steps: according to the effluent temperature and the preset standard back pressure corresponding to the oil well, the effluent total amount corresponding to the standard back pressure and the effluent temperature is searched in the target relation model, and the searched effluent total amount is determined as the standard effluent total amount corresponding to the oil well; making a difference between the standard effluent total amount and the effluent total amount, and determining the total water blending amount corresponding to the oil well, wherein the total water blending amount refers to the total water blending amount in a sampling period, the sampling period is the sampling period of a pressure sensor and a temperature sensor, the pressure sensor is used for detecting the back pressure of the oil well, and the temperature sensor is used for detecting the effluent temperature;
determining valve opening information of a water mixing control valve corresponding to the oil well according to the total water mixing amount;
sending the opening information of the valve to the water mixing control valve so that the water mixing control valve can control the water mixing amount of the oil well according to the opening information of the valve;
the establishing process of the target relation model comprises the following steps:
acquiring a preset maximum sample liquid outlet temperature and a preset minimum sample liquid outlet temperature;
determining the sample liquid outlet temperature of at least one oil well according to a preset interval between the maximum sample liquid outlet temperature and the minimum sample liquid outlet temperature;
acquiring a preset maximum sample liquid outlet total amount and a preset minimum sample liquid outlet total amount for each sample liquid outlet temperature in the sample liquid outlet temperatures of the at least one oil well; obtaining a plurality of sample liquid outlet total amounts between the maximum sample liquid outlet total amount and the minimum sample liquid outlet total amount according to a preset interval; corresponding each sample liquid outlet temperature in the sample liquid outlet temperatures of the at least one oil well to the total amount of the plurality of sample liquid outlets to obtain the total amount of the plurality of sample liquid outlets corresponding to each sample liquid outlet temperature;
acquiring sample end pressure of a flowline of the oil well at each sample effluent temperature;
determining sample oil well back pressure corresponding to each sample liquid output amount at each sample liquid output temperature of the oil well according to the sample tail end pressure, the corresponding sample liquid output temperature and each sample liquid output amount at the sample liquid output temperature;
and correspondingly storing the total liquid output amount of each sample at the liquid output temperature of each sample and the corresponding back pressure of the oil well to obtain the target relation model.
2. The method as claimed in claim 1, wherein said determining valve opening information of the water mixing control valve corresponding to the oil well according to the water mixing total amount comprises:
determining a water mixing control valve corresponding to the oil well;
acquiring a corresponding relation table of the preset watering total amount and the valve opening information of the watering control valve;
and searching the valve opening information corresponding to the total watering amount in the corresponding relation table, and taking the valve opening information as the valve opening information of the watering control valve corresponding to the oil well.
3. An oil well water dosage control apparatus, the apparatus comprising:
the acquisition module is used for acquiring the oil well back pressure and the liquid outlet temperature corresponding to the oil well;
the first determining module is used for determining the total liquid output amount corresponding to the oil well according to the oil well back pressure and the liquid output temperature, and comprises: and searching the total liquid output amount corresponding to the oil well back pressure and the liquid output temperature by using a target relation model, wherein the target relation model comprises the following steps: the corresponding relation between the oil well back pressure and the total liquid output amount corresponding to the oil wells at different liquid output temperatures;
the second determining module is used for determining the total water blending amount corresponding to the oil well according to the liquid outlet temperature, the preset standard back pressure corresponding to the oil well and the liquid outlet amount, and comprises: according to the effluent temperature and a preset standard back pressure corresponding to the oil well, the effluent total amount corresponding to the standard back pressure and the effluent temperature is searched in the target relation model, and the searched effluent total amount is determined as the standard effluent total amount corresponding to the oil well; making a difference between the standard effluent total amount and the effluent total amount, and determining the total water blending amount corresponding to the oil well, wherein the total water blending amount refers to the total water blending amount in a sampling period, the sampling period is the sampling period of a pressure sensor and a temperature sensor, the pressure sensor is used for detecting the back pressure of the oil well, and the temperature sensor is used for detecting the effluent temperature;
the third determining module is used for determining the valve opening information of the water mixing control valve corresponding to the oil well according to the total water mixing amount;
the sending module is used for sending the opening information of the valve to the water mixing control valve so that the water mixing control valve can control the water mixing amount of the oil well according to the opening information of the valve;
wherein, the establishing process of the target relation model comprises the following steps:
acquiring a preset maximum sample liquid outlet temperature and a preset minimum sample liquid outlet temperature;
determining the sample liquid outlet temperature of at least one oil well according to a preset interval between the maximum sample liquid outlet temperature and the minimum sample liquid outlet temperature;
acquiring a preset maximum sample liquid outlet total amount and a preset minimum sample liquid outlet total amount for each sample liquid outlet temperature in the sample liquid outlet temperatures of the at least one oil well; obtaining a plurality of sample liquid outlet total amounts between the maximum sample liquid outlet total amount and the minimum sample liquid outlet total amount according to a preset interval; corresponding each sample liquid outlet temperature in the sample liquid outlet temperatures of the at least one oil well to the total amount of the plurality of sample liquid outlets to obtain the total amount of the plurality of sample liquid outlets corresponding to each sample liquid outlet temperature;
acquiring sample end pressure of a flowline of the oil well at each sample effluent temperature;
determining sample oil well back pressure corresponding to each sample liquid output total amount at each sample liquid output temperature of the oil well according to the sample tail end pressure, the corresponding sample liquid output temperature and each sample liquid output total amount at the sample liquid output temperature;
and correspondingly storing the total liquid output amount of each sample at the liquid output temperature of each sample and the corresponding oil well back pressure to obtain the target relation model.
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| CN102436237B (en) * | 2011-11-02 | 2014-12-10 | 北京必创科技有限公司 | Watering heat tracing control method |
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