Production well control methods, systems, equipment, and media based on dual load values

Abstract

This invention relates to the field of offshore oil and gas extraction, providing a production well control method, system, equipment, and medium based on dual load values. The method includes acquiring initial production data of the production well; calculating the drainage height based on the initial production data, causing the production plunger to drop from its initial position, and collecting well environment data; calculating the gas column height and a well temperature correction value, correcting the gas column height using the well temperature correction value to obtain the target gas column height; acquiring the internal acceleration of the liquid, determining the liquid state based on the internal acceleration, and calculating the liquid depth; calculating distance judgment parameters based on the liquid depth and drainage height to control the expansion of the production plunger; collecting well shut-in production data, calculating a first load value, executing a well opening command based on the first load value, causing the production plunger to return to the initial position, collecting well opening production data, calculating a second load value, and executing a well shut-in command based on the second load value. This invention effectively improves the production output of production wells.

Description

Technical Field

[0001] This invention relates to the field of marine oil and gas extraction technology, and in particular to a production well control method, system, equipment and medium based on dual load values. Background Technology

[0002] Intermittent well opening technology is a common method for enhancing oil and gas production in offshore oil and gas exploration. The drainage production process based on intermittent wells typically consists of four steps: the follow-through production stage, the plunger descending stage, the shut-in and repressurization stage, and the plunger ascending stage. The wellhead state changes in these four steps are controlled by manual or electric needle valves. The opening and closing cycle of the surface needle valves determines the working time of each step in the overall drainage production process. The well opening time determines the follow-through production and plunger ascending stages, while the shut-in time determines the plunger descending and shut-in repressurization stages. The interaction and influence of well opening and closing times and durations jointly determine the final production of the oil and gas well. Therefore, adaptively adjusting the well opening and closing times and durations based on changes in different physical quantities within the well is a key factor in maximizing oil and gas well production.

[0003] The timing and duration of well shut-in are typically fixed values ​​selected based on the historical production curves of the oil and gas well. As production continues, the pressure in the oil and gas well decreases. For low-pressure production wells, fixed shut-in and shut-out times cannot adapt to the changing production conditions of the gas well. Furthermore, in offshore environments, seawater and salinity may enter the formation during extraction. In addition, as extraction time increases, the water content in the formation also increases. All of these factors lead to changes in the liquid state, thereby affecting the control process of the production plunger. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in related technologies. To this end, this invention provides a production well control method, system, equipment, and medium based on dual load values, realizing automatic control of the timing of well opening and closing and the expansion of the production plunger.

[0005] This invention provides a production well control method based on dual load values, comprising:

[0006] S1: Determine the production well, obtain the initial production data of the production well, calculate the drainage height based on the initial production data, set the production plunger in the initial position, let the production plunger fall into the production well from the initial position, and collect environmental data inside the well;

[0007] S2: Calculate the target gas column height based on the well environment data;

[0008] S3: Obtain the internal acceleration of the liquid, determine the liquid state based on the internal acceleration, calculate the pressure change rate based on the liquid state, and calculate the liquid depth based on the pressure change rate.

[0009] S4: Calculate distance judgment parameters based on liquid depth and drainage height, and control the expansion of the production plunger based on the distance judgment parameters and the target gas column height;

[0010] S5: Collect well shut-in production data, calculate a first load value based on the well shut-in production data, execute a well open command based on the first load value, and cause the production plunger to return to the initial position. Collect well open production data, calculate a second load value based on the well open production data, and execute a well shut-in command based on the second load value. Control the production of the production well through the well open command and the well shut-in command.

[0011] According to the production well control method based on dual load values ​​provided by the present invention, step S1 specifically includes:

[0012] S11: Identify the production well, instruct the production plunger to perform a production cycle, and obtain initial production data including the original casing pressure, the original tubing pressure, and the density of the fluid in the well.

[0013] S12: Calculate the drainage height using the original casing pressure, the original tubing pressure, and the density of the well fluid. Set the production plunger to the initial position and open the production valve to allow the production plunger to fall into the production well from the initial position. Collect the well environment data until the production plunger falls into the well fluid.

[0014] According to the production well control method based on dual load values ​​provided by the present invention, step S2 specifically includes:

[0015] S21: Calculate the gas column height using the original tubing pressure and the ambient temperature in the well environment data, and calculate the well temperature correction value using the water vapor pressure in the well environment data;

[0016] S22: Substitute the well temperature correction value into the gas column height to obtain the target gas column height.

[0017] According to the production well control method based on dual load values ​​provided by the present invention, step S3 specifically includes:

[0018] S31: After the production plunger falls into the well liquid, the rate of change of acceleration of the liquid is obtained by the acceleration sensor, and the state of the liquid is determined based on the rate of change of acceleration.

[0019] S32: When the liquid is in a uniform state, obtain the pressure change rate with the liquid depth, and calculate the liquid depth using the pressure change rate and the liquid surface pressure in the well environment data.

[0020] When the liquid is in a stratified liquid state, the thickness of the first liquid layer is determined according to the rate of change of acceleration, and the pressure of the first liquid layer is determined by the thickness of the first liquid layer.

[0021] Obtain the pressure change rate with liquid depth, and calculate the liquid depth using the pressure change rate, the thickness of the first liquid layer, and the pressure of the first liquid layer.

[0022] According to the production well control method based on dual load values ​​provided by the present invention, in step S4, the ratio of the liquid depth to the drainage height is calculated to obtain the distance judgment parameter, and the distance judgment parameter threshold is determined according to the target gas column height. When the distance judgment parameter is greater than the distance judgment parameter threshold, the production plunger expands.

[0023] According to the production well control method based on dual load values ​​provided by the present invention, in step S5, after obtaining the first load value, a first load value threshold is obtained. When the first load value reaches the first load value threshold, a well opening command is executed, and the production plunger returns to the initial position. After obtaining the second load value, a second load value threshold is obtained. When the second load value reaches the second load value threshold, a well shut-in command is executed.

[0024] According to the production well control method based on dual load values ​​provided by the present invention, in step S5, the first load value threshold ranges from 40% to 50%, and the specific value of the first load value threshold is determined according to the shut-in casing pressure; the second load value threshold ranges from 90% to 100%, and the specific value of the second load value threshold is determined according to the rise rate of the shut-in casing pressure.

[0025] This invention also provides a production well control system based on dual load values, comprising:

[0026] Drainage height module: used to determine the production well, obtain the initial production data of the production well, calculate the drainage height through the initial production data, set the production plunger in the initial position, make the production plunger fall into the production well from the initial position, and collect environmental data inside the well;

[0027] Target gas column height module: Calculates the target gas column height based on the well environment data;

[0028] Liquid depth module: used to acquire the internal acceleration of the liquid, determine the liquid state based on the internal acceleration, calculate the pressure change rate based on the liquid state, and calculate the liquid depth based on the pressure change rate;

[0029] Distance judgment parameter module: used to calculate distance judgment parameters based on liquid depth and drainage height, and to control the expansion of the production plunger based on the distance judgment parameters and the target gas column height;

[0030] Production well production module: used to collect shut-in production data, calculate a first load value based on the shut-in production data, execute a well opening command based on the first load value, and cause the production plunger to return to the initial position, collect well opening production data, calculate a second load value based on the well opening production data, execute a well shut-in command based on the second load value, and control the production of the production well through the well opening command and well shut-in command.

[0031] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of any of the above-described production well control methods based on dual load values.

[0032] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the production well control method based on dual load values ​​as described above.

[0033] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0034] The present invention provides a production well control method, system, equipment, and medium based on dual load values. It calculates a first load value and a second load value using well shut-in production data and well opening production data, respectively, thereby automatically controlling the execution of well opening and shut-in commands. This makes the well opening and shut-in timing more aligned with actual production conditions. Furthermore, the load value threshold can be flexibly adjusted based on changes in casing pressure, effectively improving the production rate of low-pressure production wells. In addition, it can determine the liquid depth and control the expansion of the production plunger based on different liquid states, thereby overcoming changes in liquid state caused by seawater, salt infiltration, and water injection.

[0035] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a schematic flowchart of the production well control method based on dual load values ​​provided by the present invention.

[0038] Figure 2This is a schematic diagram of the production well control system based on dual load values ​​provided by the present invention.

[0039] Figure 3 This is a schematic diagram of the structure of the production well control device based on dual load values ​​provided by the present invention.

[0040] Figure label:

[0041] 100. Drainage height module; 200. Target gas column height module; 300. Liquid depth module; 400. Distance judgment parameter module; 500. Production well production module; 810. Processor; 820. Communication interface; 830. Memory; 840. Communication bus. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention. The following embodiments are used to illustrate this invention but cannot be used to limit the scope of this invention.

[0043] In the description of the embodiments of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] The following is combined with Figures 1 to 3 Specific embodiments of the present invention are described below:

[0047] Figure 1 The flowchart of the production well control method based on dual load values ​​provided by the present invention is as follows: First, initial production data is acquired, the drainage height is calculated, the production plunger is lowered from the initial position, and well environment data is collected. Then, the target gas column height is calculated based on the well environment data. Subsequently, the liquid acceleration is acquired and the liquid state is determined, thereby calculating the pressure change rate and obtaining the liquid depth. Then, a distance judgment parameter is calculated based on the liquid depth and drainage height, and the expansion of the production plunger is controlled based on the distance judgment parameter. Finally, a first load value is calculated and a well opening command is executed based on the first load value, and a second load value is calculated and a well shut-in command is executed based on the second load value.

[0048] The specific implementation method for the above steps in this embodiment is as follows:

[0049] S1: Determine the production well, obtain the initial production data of the production well, calculate the drainage height based on the initial production data, set the production plunger in the initial position, let the production plunger fall into the production well from the initial position, and collect environmental data inside the well;

[0050] Furthermore, the objective of this stage is to obtain initial production data from the production well, thereby calculating the drainage height and causing the production plunger to descend from its initial position into the production well to collect environmental data within the well. Specifically, step S1 includes:

[0051] S11: Identify the production well, instruct the production plunger to perform a production cycle, and obtain initial production data including the original casing pressure, the original tubing pressure, and the density of the fluid in the well.

[0052] S12: Calculate the drainage height using the original casing pressure, the original tubing pressure, and the density of the well fluid. Set the production plunger to the initial position and open the production valve to allow the production plunger to fall into the production well from the initial position. Collect the well environment data until the production plunger falls into the well fluid.

[0053] The specific implementation method for the above steps in this embodiment is as follows:

[0054] First, the production well is identified. In this embodiment, the production well is a low-pressure offshore gas well located at sea with low formation pressure, and is equipped with production facilities such as a production plunger and an electric needle valve. Then, the production plunger is instructed to perform one production cycle, that is, to complete one cycle of falling from the initial position and rising back to the initial position. Initial production data, including the initial casing pressure, the initial tubing pressure, and the well fluid density before the plunger falls, can be obtained through sensors in the production plunger and the production well.

[0055] Then the original pressure of the casing can be used. Original pressure of the oil pipe and the density of the liquid in the well Calculate drainage height :

[0056]

[0057] Where g is the acceleration due to gravity. To avoid excessive drainage leading to failure of the final liquid lifting process, the drainage height is controlled to be no more than 300 meters. If the calculated drainage height is greater than 300 meters, it is always taken as 300 meters. To avoid insufficient drainage causing the production plunger to rise too quickly to the initial position and thus be damaged, if the calculated drainage height is less than 150 meters, it is always taken as 150 meters.

[0058] The production plunger is then positioned initially, and the production valve in the electric needle valve is opened while other valves are closed. This allows the production plunger to fall freely into the production well from its initial position. During this process, environmental data from inside the well is collected by built-in sensors until the plunger enters the well fluid. Because the acceleration of the production plunger changes drastically the instant it enters the well fluid, the abrupt change in the rate of acceleration can be used to determine whether the production plunger has entered the well fluid.

[0059] S2: Calculate the target gas column height based on the well environment data;

[0060] Furthermore, the objective of this stage is to calculate the gas column height based on the well environment data, thereby calculating the well temperature correction value, and correcting the gas column height to obtain the target gas column height. Specifically, step S2 includes:

[0061] S21: Calculate the gas column height using the original tubing pressure and the ambient temperature in the well environment data, and calculate the well temperature correction value using the water vapor pressure in the well environment data;

[0062] S22: Substitute the well temperature correction value into the gas column height to obtain the target gas column height.

[0063] The specific implementation method for the above steps in this embodiment is as follows:

[0064] First, the gas column height is calculated using the original tubing pressure and the ambient temperature T from the well environment data. :

[0065]

[0066] Where R is the gas constant, taken as 8.314 J / (mol·K) and K is the thermodynamic temperature unit, M is the molar mass of air, taken as 0.02896 kg / mol, and P1 is the liquid surface pressure of the production plunger at the instant it falls into the well, which is measured by the sensor built into the production plunger.

[0067] Next, the well temperature correction value is calculated using the water vapor pressure e from the well environment data. :

[0068]

[0069] Finally, substituting the well temperature correction value into the gas column height yields the target gas column height. :

[0070]

[0071] S3: Obtain the internal acceleration of the liquid, determine the liquid state based on the internal acceleration, calculate the pressure change rate based on the liquid state, and calculate the liquid depth based on the pressure change rate.

[0072] Furthermore, the objective of this stage is to determine the liquid state based on the internal acceleration, thereby calculating the pressure change rate and obtaining the liquid depth. Specifically, step S3 includes:

[0073] S31: After the production plunger falls into the well liquid, the rate of change of acceleration of the liquid is obtained by the acceleration sensor, and the state of the liquid is determined based on the rate of change of acceleration.

[0074] S32: When the liquid is in a uniform state, obtain the pressure change rate with the liquid depth, and calculate the liquid depth using the pressure change rate and the liquid surface pressure in the well environment data.

[0075] When the liquid is in a stratified liquid state, the thickness of the first liquid layer is determined according to the rate of change of acceleration, and the pressure of the first liquid layer is determined by the thickness of the first liquid layer.

[0076] Obtain the pressure change rate with liquid depth, and calculate the liquid depth using the pressure change rate, the thickness of the first liquid layer, and the pressure of the first liquid layer.

[0077] The specific implementation method for the above steps in this embodiment is as follows:

[0078] First, after the production plunger falls into the well fluid, the rate of change of acceleration of the production plunger within the fluid is obtained using an accelerometer, and the fluid state is determined based on this rate of change. Specifically, if the fluid is homogeneous, the absolute value of the plunger's acceleration will decrease relatively smoothly before it expands, and therefore the rate of change of acceleration will not change abruptly. In this case, the fluid state can be determined to be homogeneous.

[0079] Furthermore, since offshore production wells are located in a marine environment, seawater and salinity may enter the formation during production and drilling processes. For low-pressure gas wells with lower production pressures, there may also be significant amounts of water in the formation, potentially leading to fluid stratification within the production well. If the fluid is stratified, before the production plunger expands, as it passes through the interface between the stratified liquids, the absolute value of its acceleration will change abruptly due to the change in liquid density, resulting in a sudden change in the rate of acceleration change. This indicates that the fluid is stratified.

[0080] When the liquid is homogeneous, the pressure change rate k of the homogeneous liquid with liquid depth can be estimated based on the liquid density in the well. Furthermore, the pressure in the liquid obtained by the production plunger through a sensor can be used to determine the pressure. Therefore, the surface pressure h can be obtained from the difference between the water pressure and the surface pressure, as well as the surface pressure:

[0081]

[0082] When the liquid is in a stratified state, the upper layer is typically a light, alkanes-based liquid, and its volume is relatively small. The main component of the well fluid is the heavier lower layer liquid. Therefore, the density of the well fluid can be directly taken as the density of the lower layer liquid. In this case, the thickness of the upper layer liquid is taken as the thickness of the first liquid layer. Since the thickness of the first liquid layer is relatively low, it can be estimated as follows: the rate of change of acceleration before the abrupt change in the rate of change of acceleration is taken as the rate of change of acceleration in the upper layer liquid; the time from the entry of the production plunger into the well fluid to the abrupt change in the rate of change of acceleration is taken as the passage time of the upper layer liquid. Integrating the rate of change of acceleration over the passage time of the upper layer liquid yields the average acceleration in the upper layer liquid. Integrating the average acceleration over the passage time of the upper layer liquid yields the average velocity in the upper layer liquid. Finally, multiplying the passage time of the upper layer liquid by the average velocity yields the thickness of the first liquid layer. .

[0083] Subsequently, based on the thickness of the first liquid layer, the surface pressure of the liquid at the instant the production plunger falls into the well, and the density of the first liquid layer estimated empirically, the pressure of the first liquid layer at the interface between the liquid layers is obtained. Next, the pressure change rate k of the lower fluid layer with fluid depth is estimated based on the fluid density in the well. Then, the pressure in the lower fluid layer is obtained from the pressure of the production plunger via a sensor. The liquid depth h is calculated using the pressure change rate, the thickness of the first liquid layer, and the pressure of the first liquid layer.

[0084]

[0085] S4: Calculate distance judgment parameters based on liquid depth and drainage height, and control the expansion of the production plunger based on the distance judgment parameters and the target gas column height;

[0086] Furthermore, the purpose of this stage is to calculate the distance judgment parameter and control the expansion of the production plunger through the distance judgment parameter. Specifically, in step S4, the ratio of the liquid depth to the drainage height is calculated to obtain the distance judgment parameter. The distance judgment parameter threshold is determined according to the target gas column height. When the distance judgment parameter is greater than the distance judgment parameter threshold, the production plunger expands.

[0087] The specific implementation method for the above steps in this embodiment is as follows:

[0088] After the production plunger has traveled a certain distance into the well fluid, it needs to hover in the fluid. This requires the production plunger to expand to increase its buoyancy, allowing it to decelerate and float in the well fluid. Therefore, the production plunger needs to expand when it approaches the empirically determined hovering depth. To control the timing of the production plunger expansion, the ratio of fluid depth to displacement height is calculated, thus obtaining the distance judgment parameter. :

[0089]

[0090] Subsequently, a distance judgment parameter threshold is determined based on the target air column height. In this embodiment, the distance judgment parameter threshold can be a value between 70% and 90%, and the specific value is determined according to the target air column height. The higher the target air column height, the longer the production plunger falls, and the more early the deceleration needs to begin, resulting in a smaller distance judgment parameter threshold. When the distance judgment parameter is greater than the distance judgment parameter threshold, the production plunger expands and begins to decelerate.

[0091] S5: Collect well shut-in production data, calculate a first load value based on the well shut-in production data, execute a well open command based on the first load value, and cause the production plunger to return to the initial position. Collect well open production data, calculate a second load value based on the well open production data, and execute a well shut-in command based on the second load value. Control the production of the production well through the well open command and the well shut-in command.

[0092] Furthermore, the purpose of this stage is to calculate the first load value to execute the well opening command, and to calculate the second load value to execute the well shut-in command, thereby controlling the production of the production well. Specifically, in step S5, after obtaining the first load value, a first load value threshold is obtained. When the first load value reaches the first load value threshold, the well opening command is executed, and the production plunger returns to the initial position. After obtaining the second load value, a second load value threshold is obtained. When the second load value reaches the second load value threshold, the well shut-in command is executed.

[0093] In step S5, the first load value threshold ranges from 40% to 50%, and the specific value of the first load value threshold is determined based on the shut-in casing pressure. The second load value threshold ranges from 90% to 100%, and the specific value of the second load value threshold is determined based on the rate of increase of the shut-in casing pressure.

[0094] The specific implementation method for the above steps in this embodiment is as follows:

[0095] After the production plunger expands, decelerates, and eventually floats in the well fluid, sensors within the production well and the production plunger collect data including oil and gas pressures during well shut-in. Shut-in casing pressure under shut-in conditions and pipeline pressure in the shut-in state The shut-in production data is used to calculate the first load value. :

[0096]

[0097] After obtaining the first load value, a first load value threshold is acquired. The first load value threshold ranges from 40% to 50%, and its specific value is determined based on the shut-in casing pressure; the higher the shut-in casing pressure, the higher the first load value threshold. When the first load value reaches the first load value threshold, the well opening command can be executed. After well opening, the production plunger will return to its initial position along with the rising oil and gas. At this time, sensors inside the production well and in the production plunger continue to collect oil and gas pressure data, including those under well opening conditions. Well opening casing pressure under open-well conditions and pipeline pressure during well opening The well production data is used to calculate the second load value. :

[0098]

[0099] After obtaining the second load value, a second load value threshold is acquired. The value of the second load value threshold ranges from 90% to 100%, and the specific value of the second load value threshold is determined based on the rate of increase of the shut-in casing pressure during the previous well shut-in. In this embodiment, since the production well is a low-pressure offshore gas well located at sea with low formation pressure, the shut-in casing pressure will continue to rise during well shut-in. The faster the rate of increase of the shut-in casing pressure, the higher the value of the second load threshold. When the second load value reaches the second load value threshold, a well shut-in command is executed. The production plunger then acquires initial production data again to calculate the drainage height and descends. This process of executing the well opening and shut-in commands is repeated to control the production of the production well.

[0100] This invention takes into account the impact of special environments such as the ocean on production wells by considering the liquid state, calculates the liquid depth more accurately, and controls the production of production wells by using first load values ​​and second load values, which effectively improves the production control efficiency of offshore production wells and thus increases their yield.

[0101] The production well control device based on dual load values ​​provided by the present invention is described below. The production well control device based on dual load values ​​described below can be referred to in correspondence with the production well control method based on dual load values ​​described above.

[0102] Figure 2 This is a schematic diagram of a production well control system based on dual load values, as shown below. Figure 2 As shown, the method for implementing the production well control method based on dual load values ​​as described above includes:

[0103] Drainage height module 100: used to determine the production well, obtain the initial production data of the production well, calculate the drainage height through the initial production data, set the production plunger in the initial position, make the production plunger fall into the production well from the initial position, and collect environmental data in the well.

[0104] Target gas column height module 200: Calculates the target gas column height based on the well environment data;

[0105] Liquid depth module 300: Used to acquire the internal acceleration of the liquid, determine the liquid state based on the internal acceleration, calculate the pressure change rate based on the liquid state, and calculate the liquid depth based on the pressure change rate;

[0106] Distance judgment parameter module 400: used to calculate distance judgment parameters based on liquid depth and drainage height, and to control the expansion of the production plunger based on the distance judgment parameters and the target gas column height;

[0107] Production well production module 500: Used to collect well shut-in production data, calculate a first load value based on the well shut-in production data, execute a well opening command based on the first load value, and cause the production plunger to return to the initial position, collect well opening production data, calculate a second load value based on the well opening production data, execute a well shut-in command based on the second load value, and control the production of the production well through the well opening command and the well shut-in command.

[0108] on the other hand, Figure 3 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 3 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 can call logic instructions in the memory 830 to execute a production well control method based on dual load values, the method including:

[0109] S1: Determine the production well, obtain the initial production data of the production well, calculate the drainage height based on the initial production data, set the production plunger in the initial position, let the production plunger fall into the production well from the initial position, and collect environmental data inside the well;

[0110] S2: Calculate the target gas column height based on the well environment data;

[0111] S3: Obtain the internal acceleration of the liquid, determine the liquid state based on the internal acceleration, calculate the pressure change rate based on the liquid state, and calculate the liquid depth based on the pressure change rate.

[0112] S4: Calculate distance judgment parameters based on liquid depth and drainage height, and control the expansion of the production plunger based on the distance judgment parameters and the target gas column height;

[0113] S5: Collect well shut-in production data, calculate a first load value based on the well shut-in production data, execute a well open command based on the first load value, and cause the production plunger to return to the initial position. Collect well open production data, calculate a second load value based on the well open production data, and execute a well shut-in command based on the second load value. Control the production of the production well through the well open command and the well shut-in command.

[0114] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0115] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the production well control method based on dual load values ​​provided by the methods described above, the method comprising:

[0116] S1: Determine the production well, obtain the initial production data of the production well, calculate the drainage height based on the initial production data, set the production plunger in the initial position, let the production plunger fall into the production well from the initial position, and collect environmental data inside the well;

[0117] S2: Calculate the target gas column height based on the well environment data;

[0118] S3: Obtain the internal acceleration of the liquid, determine the liquid state based on the internal acceleration, calculate the pressure change rate based on the liquid state, and calculate the liquid depth based on the pressure change rate.

[0119] S4: Calculate distance judgment parameters based on liquid depth and drainage height, and control the expansion of the production plunger based on the distance judgment parameters and the target gas column height;

[0120] S5: Collect well shut-in production data, calculate a first load value based on the well shut-in production data, execute a well open command based on the first load value, and cause the production plunger to return to the initial position. Collect well open production data, calculate a second load value based on the well open production data, and execute a well shut-in command based on the second load value. Control the production of the production well through the well open command and the well shut-in command.

[0121] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0122] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling a production well based on dual load values, characterized by, Comprise: S1: determine the production well, obtain the initial production data of the production well, calculate the drainage height through the initial production data, set the production plunger at the initial position, make the production plunger fall into the production well from the initial position, and collect the well environment data; S2: calculate the target gas column height according to the well environment data; S3: obtain the liquid acceleration, judge the liquid state according to the liquid acceleration, calculate the pressure change rate through the liquid state, and calculate the liquid depth according to the pressure change rate; Step S3 specifically comprises: S31: when the production plunger falls into the liquid in the well, the acceleration change rate of the liquid acceleration is obtained through the acceleration sensor, and the liquid state is judged according to the acceleration change rate; S32: when the liquid state is uniform liquid, the pressure change rate of the pressure with the liquid depth is obtained, and the liquid depth is calculated through the pressure change rate and the liquid level pressure in the well environment data; When the liquid state is stratified liquid, the first liquid layer thickness is determined according to the acceleration change rate, and the first liquid layer pressure is determined through the first liquid layer thickness; The pressure change rate of the pressure with the liquid depth is obtained, and the liquid depth is calculated through the pressure change rate, the first liquid layer thickness and the first liquid layer pressure; S4: calculate the distance judgment parameter through the liquid depth and the drainage height, control the expansion of the production plunger through the distance judgment parameter and the target gas column height; S5: collect the shut-in production data, calculate the first load value through the shut-in production data, execute the open well command according to the first load value, and make the production plunger return to the initial position, collect the open well production data, calculate the second load value through the open well production data, and execute the shut-in command according to the second load value, control the production of the production well through the open well command and the shut-in command.

2. The dual load value based production well control method of claim 1, wherein, Step S1 specifically comprises: S11: determine the production well, make the production plunger execute the production cycle, and obtain the initial production data including the casing original pressure, the tubing original pressure and the well liquid density; S12: calculate the drainage height through the casing original pressure, the tubing original pressure and the well liquid density, set the production plunger at the initial position and open the production valve, make the production plunger fall into the production well from the initial position, and collect the well environment data until the production plunger falls into the liquid in the well.

3. The dual load value based production well control method of claim 1, wherein, Step S2 specifically comprises: S21: calculate the gas column height through the tubing original pressure and the environmental temperature in the well environment data, and calculate the well temperature correction value through the water vapor pressure in the well environment data; S22: substitute the well temperature correction value into the gas column height to obtain the target gas column height.

4. The dual load value based production well control method of claim 1, wherein, In step S4, the ratio of the liquid depth to the drainage height is calculated to obtain the distance judgment parameter, the distance judgment parameter threshold is determined according to the target gas column height, and the production plunger expands when the distance judgment parameter is greater than the distance judgment parameter threshold.

5. The dual load value based production well control method of claim 1, wherein, In step S5, after the first load value is obtained, a first load value threshold is acquired, and an opening command is executed when the first load value reaches the first load value threshold, and the production plunger is returned to the initial position; after the second load value is obtained, a second load value threshold is acquired, and a closing command is executed when the second load value reaches the second load value threshold.

6. The dual load value based production well control method of claim 5, wherein, In step S5, the first load value threshold has a value range of 40% to 50%, and the specific value of the first load value threshold is determined according to the casing pressure of the closed well, and the second load value threshold has a value range of 90% to 100%, and the specific value of the second load value threshold is determined according to the rising speed of the casing pressure of the closed well.

7. A dual load value based production well control system for performing a dual load value based production well control method as claimed in any one of the claims 1 to 6, characterized by Comprise: A drainage height module for determining a production well, acquiring initial production data of the production well, calculating a drainage height through the initial production data, setting a production plunger at an initial position, making the production plunger drop from the initial position into the production well, and collecting well environment data; A target gas column height module for calculating a target gas column height according to the well environment data; A liquid depth module for acquiring liquid internal acceleration, judging liquid state according to the liquid internal acceleration, and calculating a pressure change rate through the liquid state, and calculating a liquid depth according to the pressure change rate; A distance judgment parameter module for calculating a distance judgment parameter through the liquid depth and the drainage height, and controlling expansion of the production plunger through the distance judgment parameter and the target gas column height; A production well production module for collecting closed well production data, calculating a first load value through the closed well production data, executing an opening command according to the first load value, and making the production plunger return to the initial position, collecting open well production data, calculating a second load value through the open well production data, and executing a closing command according to the second load value, and controlling production of the production well through the opening command and the closing command.

8. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the computer program to realize the steps of the production well control method based on double load values according to any one of claims 1 to 6. 9.A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to realize the steps of the production well control method based on double load values according to any one of claims 1 to 6.

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