Method for calculating liquid production capacity of gas well of gas storage

Abstract

The invention belongs to the technical field of underground gas storage dynamic analysis, and particularly relates to a gas storage gas well liquid production capacity calculation method. According to the method, production data (the daily gas production rate of each gas well of the gas storage, the total daily liquid production rate of the gas storage and the critical liquid carrying flow rate of the gas storage) and an electric measurement interpretation result are determined to serve as a calculation mode for calculating relevant parameters of liquid production weighting factors of each gas well of the gas storage; the data required by calculation can be obtained according to the data required in the well logging process, so that the daily fluid production capacity of each gas well can be obtained only by acquiring the production data and the electrical logging interpretation result for calculating the fluid production weighting factor and splitting the total daily gas production capacity of the gas storage; additional installation of metering devices and laboratory test analysis are not needed, so that the cost is effectively saved; and through creative analysis, the theoretical liquid supply coefficient is calculated through the electrical logging interpretation result of each gas well of the gas storage, the correlation between the water yield of the gas well of the gas storage and the electrical logging interpretation result is represented, and the accuracy of the calculation result is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of underground gas storage dynamic analysis, and in particular relates to a method for calculating the liquid production of a gas well in a gas storage. Background Art

[0002] Underground gas storage is responsible for the important mission of peak load regulation and supply guarantee in winter, and it is of great significance to ensure the efficient operation of gas storage. Since the liquid production of gas wells will reduce the injection and production capacity of gas storage and affect the peak load regulation and supply guarantee of gas storage, it is necessary to clarify the liquid production of each gas well in the gas storage, so as to provide a basis for analyzing the underground gas-water distribution of gas storage and formulating technical policies for liquid drainage and expansion, so as to maintain the efficient operation of gas storage. At present, some gas storages are limited by the surface gas production process, and can only obtain the overall liquid production of gas storage through the liquid storage tank in the injection and production station. However, there is no relevant equipment for measuring liquid production installed at the wellhead, which makes it impossible to measure the liquid production of each gas well separately. Therefore, in view of this actual situation, a method is needed to determine the liquid production of each gas well in the gas storage to guide the dynamic analysis of the gas storage and ensure the efficient operation of the gas storage.

[0003] A Chinese invention patent with application publication number CN105781521A discloses a method for determining the liquid production of a single gas well. This method connects all single wells in series to the same main pipe, installs a wellhead liquid collector and a wellbore liquid extraction tool on the main pipe and at the wellhead of each single well, installs a gas-liquid two-phase flowmeter on the main pipe, and then uses the wellhead liquid collector and the wellbore liquid extraction tool to collect water samples from the single well and the main pipe, performs water quality testing and analysis on the water samples, obtains the content of various ions per unit volume in the water samples of each single well and the main pipe, uses the gas-liquid two-phase flowmeter installed on the main pipe to measure the total liquid production, and finally uses the total liquid production combined with the content of various ions in the water sample to obtain the liquid production of each single well. However, this method requires the installation of metering devices on the pipeline and at the wellhead, and requires laboratory testing and analysis, which is costly and not suitable for the operation mode of the gas storage reservoir. Summary of the invention

[0004] The purpose of the present invention is to provide a method for calculating the liquid production of a gas well in a gas storage reservoir, which is used to solve the problem that in the prior art, when determining the liquid production of a single gas well, laboratory analysis is required, resulting in high costs.

[0005] In order to achieve the above object, the present invention provides a method for calculating the liquid production of a gas well in a gas storage reservoir, comprising the following steps:

[0006] Obtain the daily gas production of each gas well in the gas storage and the total daily liquid production of the gas storage;

[0007] According to the electrical measurement interpretation results and critical liquid carrying flow rate of each gas well in the gas storage, the real liquid supply coefficient of each gas well in the gas storage is obtained; according to the daily gas production of each gas well in the gas storage and the real liquid supply coefficient, the liquid production weighting factor of each gas well in the gas storage is obtained;

[0008] According to the liquid production weighting factor of each gas well in the gas storage reservoir, the total daily liquid production of the gas storage reservoir is split to obtain the daily liquid production of each gas well in the gas storage reservoir.

[0009] The beneficial effects of the above technical solution are: a calculation method for determining production data (daily gas production of each gas well in the gas storage, total daily liquid production of the gas storage, and critical liquid carrying flow) and electrical logging interpretation results as relevant parameters for calculating the liquid production weighting factor of each gas well in the gas storage, so that the data required for the calculation can be obtained based on the data required in the well logging process. Therefore, when calculating the liquid production of the gas wells in the gas storage, it is only necessary to obtain production data and electrical logging interpretation results for calculating the liquid production weighting factor, and split the total daily gas production of the gas storage to obtain the daily liquid production of each gas well, without the need to install additional metering devices and laboratory testing and analysis, thereby effectively saving costs.

[0010] Furthermore, according to the electrical measurement interpretation results and critical liquid carrying flow rate of each gas well in the gas storage reservoir, the method of obtaining the true liquid supply coefficient of each gas well in the gas storage reservoir is as follows:

[0011] According to the theoretical liquid supply coefficient and liquid carrying factor of the gas wells in the gas storage, the actual liquid production and supply coefficient of each gas well in the gas storage is calculated;

[0012] The theoretical liquid supply coefficient of the gas well in the gas storage reservoir is obtained according to the calculation model of the liquid supply coefficient of the gas well in the gas storage reservoir and the electrical measurement interpretation results of each gas well in the gas storage reservoir;

[0013] The gas storage reservoir gas well liquid carrying factor is obtained according to the gas storage reservoir gas well liquid carrying factor calculation model, the critical liquid carrying flow rate of each gas well in the gas storage reservoir and the actual gas production of each gas well in the gas storage reservoir.

[0014] The beneficial effects of the above technical solution are as follows: the theoretical liquid supply coefficient of the gas wells in the gas storage reservoir is calculated by using the gas storage reservoir gas well liquid supply coefficient calculation model and the electrical measurement interpretation results of each gas well in the gas storage reservoir, the correlation between the water production of the gas wells in the gas storage reservoir and the electrical measurement interpretation results is characterized, and the accuracy of the calculation results of the liquid production of the gas wells in the gas storage reservoir is improved.

[0015] Furthermore, the calculation model of the gas storage well liquid supply coefficient is:

[0016]

[0017] Where L' iis the theoretical liquid supply coefficient of gas well i in the gas storage reservoir, in units of mD·m; n is the total number of water-bearing layers produced by gas well i in the gas storage reservoir, in units; k wj , H j , S Gj and S WCj These are the electrical logging interpretation results of each gas well in the gas storage reservoir, among which k wj H is the water phase permeability of a water-bearing layer produced by gas well i in the gas storage reservoir, in mD; j is the effective thickness of a water-bearing layer produced by gas well i in the gas storage reservoir, in meters; S Gj S is the gas saturation of a water-bearing layer produced by gas well i in the gas storage reservoir, dimensionless; WCj It is the irreducible water saturation of a certain aquifer produced by gas well i in the gas storage reservoir, and is dimensionless.

[0018] Furthermore, the calculation model of the liquid carrying factor of the gas well of the gas storage reservoir is:

[0019]

[0020] In the formula, α i is the liquid carrying factor of gas well i in the gas storage, dimensionless; q gi is the actual gas production of gas well i in the gas storage, in units of 10 4 m 3 / d;q cri is the critical liquid carrying rate of gas well i in the gas storage, in units of 10 4 m 3 / d.

[0021] Furthermore, the critical liquid carrying flow rate of each gas well in the gas storage is calculated as follows:

[0022]

[0023] In the formula, q cri is the critical liquid carrying rate of gas well i in the gas storage, A is the cross-sectional area of ​​the oil pipe of gas well i in the gas storage, in m 2 ; P is the bottom hole flow pressure of gas well i in the gas storage reservoir, in MPa; σ is the interfacial tension between gas and water phases, in N / m; g is the constant coefficient, ρ L is the density of the liquid produced by gas well i in the gas storage, in kg / m 3 ρ g is the density of the gas produced by gas well i in the gas storage, in kg / m 3 ; Z is the compression factor of the gas produced by gas well i in the gas storage reservoir, which is dimensionless; T is the bottom hole temperature of gas well i in the gas storage reservoir, in K.

[0024] Furthermore, the density of gas produced by a gas well in a gas storage reservoir is calculated as follows:

[0025]

[0026] Wherein, P is the bottom hole flowing pressure of gas well i in the gas storage reservoir, in MPa; M is the relative molecular mass of the produced gas of gas well i in the gas storage reservoir, dimensionless; Z is the compressibility factor of the produced gas of gas well i in the gas storage reservoir, dimensionless; R is the gas constant, in kJ / (mol·K); T is the bottom hole temperature of gas well i in the gas storage reservoir, in K.

[0027] Furthermore, according to the daily gas production and the real liquid supply coefficient of each gas well in the gas storage, the liquid production weighting factor of each gas well in the gas storage is obtained as follows:

[0028]

[0029] In the formula, β i is the liquid production weighting factor of gas well i in the gas storage, in units of 10 -4 ·mD·m -2 ; L i is the actual liquid supply coefficient of gas well i in the gas storage, in mD·m; G i is the daily gas production of gas well i in the gas storage, in units of 10 4 m 3 .

[0030] Furthermore, the total daily liquid production of the gas storage is split to obtain the daily liquid production of each gas well in the gas storage as follows:

[0031]

[0032] In the formula, Q i is the liquid production of gas well i in the gas storage, in m 3 / d;Q a is the total daily liquid production of the gas storage facility, in m 3 / d; β i is the liquid production weighting factor of gas well i in the gas storage, in units of 10 -4 ·mD·m -2 ; m is the total number of gas wells in the gas storage, in units of wells.

[0033] Furthermore, the actual production and liquid supply coefficient of each gas well in the gas storage reservoir is the product of the theoretical liquid supply coefficient of the gas well in the gas storage reservoir and the liquid carrying factor.

[0034] Furthermore, the daily gas production of each gas well in the gas storage and the total daily liquid production of the gas storage are determined based on the production data of the gas storage.

[0035] The beneficial effect of the above technical solution is that it is easy to obtain the data required for calculating the liquid production of gas wells in the gas storage reservoir. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a flowchart of a method for calculating the liquid production of a gas well in a gas storage reservoir in an embodiment of the method for calculating the liquid production of a gas well in a gas storage reservoir of the present invention;

[0037] Figure 2 It is a schematic diagram of the relationship between the compression factor and pressure of the density of gas produced by a gas well in a gas storage reservoir in an embodiment of the method for calculating the liquid production of a gas well in a gas storage reservoir of the present invention. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0039] Example of a method for calculating liquid production of a gas well in a gas storage facility

[0040] This embodiment provides a technical solution for calculating the liquid production of a gas well in a gas storage reservoir. Figure 1 ; This embodiment takes a certain gas storage reservoir storage well 1 as an example to illustrate the method for calculating the liquid production of a gas well in an edge water gas reservoir type gas storage reservoir of the present invention; the gas storage reservoir is rebuilt from a certain gas reservoir block, the block has edge water, and the water body energy is relatively active, and the gas well begins to produce water in the later stage of development; the liquid production of the gas storage reservoir storage well 1 is calculated, including the following steps:

[0041] 1) Obtain the daily gas production of each gas well in the gas storage and the total daily liquid production of the gas storage;

[0042] In this embodiment, the daily gas production of each gas well of the gas storage and the total daily liquid production of the gas storage are determined according to the production data report of the gas storage (such as the content in Table 1):

[0043] G i =q gi

[0044] In the formula, G i is the daily gas production of gas well i in the gas storage, in units of 10 4 m 3 ,q gi is the actual daily gas production of gas well i in the gas storage, in units of 10 4 m 3 , which can be obtained through the gas storage reservoir production data report (as shown in Table 1 below); the gas well i in the whole text of this embodiment refers to a gas well in the gas storage reservoir; the daily liquid production of the gas storage reservoir is similar:

[0045] Q a =q w

[0046] In the formula, q w is the total daily liquid production of the gas storage, in m 3 , which can also be obtained through the gas storage reservoir production data report (not shown in Table 1); in this embodiment, the total daily liquid production of the gas storage reservoir is 53m 3 .

[0047] Table 1 Gas storage production data

[0048]

[0049]

[0050] 2) According to the electrical measurement interpretation results and critical liquid carrying flow rate of each gas well in the gas storage reservoir, the actual liquid supply coefficient of each gas well in the gas storage reservoir is obtained, as follows:

[0051] According to the theoretical liquid supply coefficient and liquid carrying factor of the gas wells in the gas storage, the actual liquid production and supply coefficient of each gas well in the gas storage is calculated;

[0052] Among them, the theoretical liquid supply coefficient of the gas well in the gas storage reservoir is obtained according to the calculation model of the liquid supply coefficient of the gas well in the gas storage reservoir and the electrical measurement interpretation results of each gas well in the gas storage reservoir:

[0053] In case of gas-water two-phase flow, the water production equation of the gas well is:

[0054]

[0055] In the formula, q w is the water production of the gas well, in m 3 / s; r is the wellhead radius, in m; h is the reservoir thickness, in m; k w is the permeability of the water phase, in mD; S w is the reservoir water saturation, in %; μ w is the viscosity of the water phase, in mPa·s; p is the formation pressure, in MPa.

[0056] From the analysis of the water production equation of the gas well, it is found that the water production of the gas well is related to its wellhead radius, reservoir thickness, water phase permeability, reservoir water saturation, formation water viscosity and formation pressure. For a gas storage, the viscosity of its formation water is the same, the formation pressure tends to be consistent after the equilibrium period, and the wellhead radius of the gas well is the same. It can be obtained that the water production of the gas well of the gas storage is correlated with the water phase permeability, reservoir water saturation and reservoir thickness. Therefore, the liquid supply coefficient is used in the present invention to characterize this relationship, and the calculation model of the liquid supply coefficient of the gas well of the gas storage is obtained as follows:

[0057]

[0058] Where L' iis the theoretical liquid supply coefficient of gas well i in the gas storage reservoir, in units of mD·m; n is the total number of water-bearing layers produced by gas well i in the gas storage reservoir, in units; k wj , H j , S Gj and S WCj These are the electrical logging interpretation results of each gas well in the gas storage reservoir, among which k wj H is the water phase permeability of a water-bearing layer produced by gas well i in the gas storage reservoir, in mD; j is the effective thickness of a water-bearing layer produced by gas well i in the gas storage reservoir, in meters; S Gj S is the gas saturation of a water-bearing layer produced by gas well i in the gas storage reservoir, dimensionless; WCj It is the irreducible water saturation of a water-bearing layer produced by gas well i in the gas storage reservoir, which is dimensionless. According to the calculation model and the electrical measurement interpretation results of each gas well in the gas storage reservoir, the real liquid supply coefficient of each gas well in the gas storage reservoir can be calculated.

[0059] It can be seen that, through creative analysis, it is determined that the water production of the gas wells in the gas storage reservoir is correlated with the water phase permeability, reservoir water saturation and reservoir thickness, and this relationship is characterized by the liquid supply coefficient; therefore, in the process of calculating the liquid production of the gas wells in the gas storage reservoir, the theoretical liquid supply coefficient of the gas wells in the gas storage reservoir is calculated through the liquid supply coefficient calculation model of the gas wells in the gas storage reservoir and the electrical measurement interpretation results of each gas well in the gas storage reservoir, which characterizes the correlation between the water production of the gas wells in the gas storage reservoir and the electrical measurement interpretation results, thereby improving the accuracy of the calculation results of the liquid production of the gas wells in the gas storage reservoir.

[0060] In the calculation model of the gas well liquid supply coefficient of the gas storage reservoir, the electrical measurement interpretation results of each gas well of the gas storage reservoir (the total number of water-bearing sublayers produced by the gas wells of the gas storage reservoir, the water phase permeability of a certain water-bearing sublayer, the effective thickness of a certain water-bearing sublayer and the gas saturation of a certain water-bearing sublayer) can be determined from the electrical measurement interpretation results table of the gas wells of the gas storage reservoir (such as the content in Table 2). The irreducible water saturation of a certain sublayer can be measured experimentally. In this embodiment, the irreducible water saturation of each water-bearing sublayer is 30%.

[0061] Table 2 Calculation table of fluid supply coefficient of reservoir 1 well

[0062]

[0063]

[0064] The liquid carrying factor of the gas well in the gas storage reservoir is obtained based on the calculation model of the liquid carrying factor of the gas well in the gas storage reservoir, the critical liquid carrying flow rate of each gas well in the gas storage reservoir, and the daily gas production of each gas well in the gas storage reservoir;

[0065] The calculation model of the gas storage well liquid carrying factor is constructed using the formula of the critical liquid carrying flow rate of the gas well to measure the actual amount of liquid that each gas well can carry under the current production state. Specifically:

[0066]

[0067] In the formula, α i is the liquid carrying factor of gas well i in the gas storage, dimensionless; q gi is the actual gas production of gas well i in the gas storage, in units of 10 4 m 3 / d;q cri is the critical liquid carrying rate of gas well i in the gas storage, in units of 10 4 m 3 / d.

[0068] The actual gas production of the gas storage well in the gas storage well liquid carrying factor calculation model can be obtained from the daily production report (i.e., the gas storage production data report in Table 1); the critical liquid carrying flow rate of the gas storage well can be calculated using the Turner model:

[0069]

[0070] In the formula, q cri is the critical liquid carrying rate of gas well i in the gas storage, A is the cross-sectional area of ​​the oil pipe of gas well i in the gas storage, in m 2 ; P is the bottom hole flow pressure of gas well i in the gas storage reservoir, in MPa; σ is the interfacial tension between gas and water phases, in N / m; g is the constant coefficient, ρ L is the density of the liquid produced by gas well i in the gas storage, in kg / m 3 ρ g is the density of the gas produced by gas well i in the gas storage, in kg / m 3 ; Z is the compression factor of the gas produced by gas well i in the gas storage reservoir, which is dimensionless; T is the bottom hole temperature of gas well i in the gas storage reservoir, in K.

[0071] The cross-sectional area of ​​the oil pipe of the gas storage well in the above Turner model can be calculated by measuring the radius of the oil pipe of the gas storage well. In this embodiment, the cross-sectional area of ​​the oil pipe of the gas storage well is 0.00332m 2 ; The bottom hole flow pressure of the gas well of the gas storage reservoir can be obtained by pressure testing. In this embodiment, the bottom hole flow pressure of the gas well of the gas storage reservoir is 22.93MPa; The gas-water two-phase interfacial tension can be determined by experiment. In this embodiment, the gas-water two-phase interfacial tension is 0.072N / m; The density of the liquid produced by the gas well of the gas storage reservoir can be obtained by sampling experimental testing. In this embodiment, the density of the liquid produced by the gas well of the gas storage reservoir is 1044kg / m 3The compression factor of the gas density produced by the gas storage well changes with the pressure. The relationship curve between the gas compression factor and pressure (refer to Figure 2 ) It is determined that under the conditions of pressure 20MPa and temperature 91°C, the gas deviation coefficient is 0.87; the bottom temperature of a gas well in the gas storage reservoir can be obtained by testing, and the bottom temperature of the gas well in this embodiment is 91°C;

[0072] The gas density of the gas well produced by the gas storage reservoir can be calculated by the following gas state equation:

[0073]

[0074] Wherein, P is the bottom hole flowing pressure of gas well i in the gas storage reservoir, in MPa; M is the relative molecular mass of the output gas of gas well i in the gas storage reservoir, which is dimensionless and can be determined by experiment. In this embodiment, the relative molecular mass of the output gas of the gas well is taken as 17; Z is the compression factor of the output gas of gas well i in the gas storage reservoir, which is dimensionless; R is the gas constant, in kJ / (mol·K), in this embodiment, it is taken as 0.008314 kJ / (mol·K); T is the bottom hole temperature of gas well i in the gas storage reservoir, in K.

[0075] 3) According to the daily gas production and the real liquid supply coefficient of each gas well in the gas storage, the liquid production weighting factor of each gas well in the gas storage is obtained; in this embodiment, the real liquid production and supply coefficient of each gas well in the gas storage is the product of the theoretical liquid supply coefficient of the gas well in the gas storage and the liquid carrying factor, that is:

[0076] L i =α i ·L' i

[0077] Where, L i is the actual liquid supply coefficient of gas well i in the gas storage, mD·m; L' i is the theoretical liquid supply coefficient of gas well i in the gas storage, in mD·m; α i is the liquid carrying factor of gas well i in the gas storage, dimensionless. In this embodiment, the calculated actual production and supply coefficient table of each gas well in the gas storage is shown in Table 3 below:

[0078] Table 3 Actual liquid supply coefficient of gas wells in gas storage

[0079]

[0080] According to the daily gas production and true liquid supply coefficient of each gas well in the gas storage, the liquid production weighting factor of each gas well in the gas storage is obtained as follows:

[0081]

[0082] In the formula, β iis the liquid production weighting factor of gas well i in the gas storage, in units of 10 -4 ·mD·m -2 ; L i is the actual liquid supply coefficient of gas well i in the gas storage, in mD·m; G i is the daily gas production of gas well i in the gas storage, in units of 10 4 m 3 .

[0083] 4) According to the liquid production weighting factor of each gas well in the gas storage, the total daily liquid production of the gas storage is split to obtain the daily liquid production of each gas well in the gas storage, specifically:

[0084]

[0085] In the formula, Q i is the liquid production of gas well i in the gas storage, in m 3 / d;Q a is the total daily liquid production of the gas storage facility, in m 3 / d; β i is the liquid production weighting factor of gas well i in the gas storage, in units of 10 -4 ·mD·m -2 ; m is the total number of gas wells in the gas storage, in units of wells.

[0086] It can be seen that this embodiment determines the production data (daily gas production of each gas well of the gas storage, the total daily liquid production of the gas storage, and the critical liquid carrying flow) and the electrical logging interpretation results as the calculation method of the relevant parameters for calculating the liquid production weighting factor of each gas well of the gas storage, so that the data required for the calculation can be obtained according to the data required in the well logging process. Therefore, when calculating the liquid production of the gas wells of the gas storage, it is only necessary to obtain the production data and the electrical logging interpretation results for calculating the liquid production weighting factor, and the total daily gas production of the gas storage can be split to obtain the daily liquid production of each gas well, without the need to install additional metering devices and laboratory testing and analysis, thereby effectively saving costs.

[0087] In this embodiment, the total number of gas wells in the gas storage is 9, and the calculated daily liquid production of each gas well in the gas storage is shown in the following Table 4:

[0088] Table 4 Liquid production of gas wells in gas storage

[0089]

[0090] By opening a gas well in the gas storage reservoir separately on site, the liquid production of each gas well (storage 1, storage 5 and storage 9) in the gas storage reservoir was obtained. Compared with the calculated value, the relative error was within 10% (refer to Table 4), and the accuracy could meet the on-site requirements, indicating that the calculation method of the present invention can accurately calculate the liquid production of the gas wells in the gas storage reservoir.

[0091] The present invention has the following characteristics:

[0092] 1) The production data (daily gas production of each gas well in the gas storage, the total daily liquid production of the gas storage, and the critical liquid carrying flow rate) and the electrical logging interpretation results are determined as the calculation method for the relevant parameters of the liquid production weighting factor of each gas well in the gas storage, so that the data required for the calculation can be obtained based on the data required in the logging process. Therefore, when calculating the liquid production of the gas wells in the gas storage, it is only necessary to obtain the production data and the electrical logging interpretation results to calculate the liquid production weighting factor, and the total daily gas production of the gas storage can be split to obtain the daily liquid production of each gas well, without the need to install additional metering devices and laboratory testing and analysis, thereby effectively saving costs.

[0093] 2) Through creative analysis, it is determined that the water production of gas wells in gas storage reservoirs is correlated with water phase permeability, reservoir water saturation and reservoir thickness, and this relationship is characterized by the liquid supply coefficient; therefore, in the process of calculating the liquid production of gas wells in gas storage reservoirs, the theoretical liquid supply coefficient of gas wells in gas storage reservoirs is calculated through the calculation model of the liquid supply coefficient of gas wells in gas storage reservoirs and the electrical measurement interpretation results of each gas well in gas storage reservoirs, which characterizes the correlation between the water production of gas wells in gas storage reservoirs and the electrical measurement interpretation results, thereby improving the accuracy of the calculation results of the liquid production of gas wells in gas storage reservoirs.

[0094] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, but do not constitute a limitation to the present invention.

Claims

1. A method for calculating the liquid production of a gas well in a gas storage reservoir, characterized in that: The steps include: Obtain the daily gas production of each gas well in the gas storage and the total daily liquid production of the gas storage; According to the electrical measurement interpretation results and critical liquid carrying flow rate of each gas well in the gas storage reservoir, the real liquid supply coefficient of each gas well in the gas storage reservoir is obtained; According to the daily gas production and real liquid supply coefficient of each gas well in the gas storage, the liquid production weighting factor of each gas well in the gas storage is obtained; According to the liquid production weighting factor of each gas well in the gas storage reservoir, the total daily liquid production of the gas storage reservoir is split to obtain the daily liquid production of each gas well in the gas storage reservoir.

2. The method for calculating liquid production of a gas well in a gas storage facility according to claim 1, characterized in that: According to the electrical measurement interpretation results of each gas well in the gas storage reservoir and the critical liquid carrying flow rate, the method to obtain the true liquid supply coefficient of each gas well in the gas storage reservoir is: According to the theoretical liquid supply coefficient and liquid carrying factor of the gas wells in the gas storage, the actual liquid production and supply coefficient of each gas well in the gas storage is calculated; The theoretical liquid supply coefficient of the gas well in the gas storage reservoir is obtained according to the calculation model of the liquid supply coefficient of the gas well in the gas storage reservoir and the electrical measurement interpretation results of each gas well in the gas storage reservoir; The gas storage reservoir gas well liquid carrying factor is obtained according to the gas storage reservoir gas well liquid carrying factor calculation model, the critical liquid carrying flow rate of each gas well in the gas storage reservoir and the actual gas production of each gas well in the gas storage reservoir.

3. The method for calculating liquid production of a gas well in a gas storage facility according to claim 2, characterized in that: The calculation model of the gas storage well liquid supply coefficient is: In the formula, L′ i is the theoretical liquid supply coefficient of gas well i in the gas storage reservoir, in units of mD·m; n is the total number of water-bearing layers produced by gas well i in the gas storage reservoir, in units; k wj , H j , S Gj and S WCj These are the electrical logging interpretation results of each gas well in the gas storage reservoir, among which k wj H is the water phase permeability of a water-bearing layer produced by gas well i in the gas storage reservoir, in mD; j is the effective thickness of a water-bearing layer produced by gas well i in the gas storage reservoir, in meters; S Gj S is the gas saturation of a water-bearing layer produced by gas well i in the gas storage reservoir, dimensionless; WCj It is the irreducible water saturation of a certain aquifer produced by gas well i in the gas storage reservoir, and is dimensionless.

4. The method for calculating liquid production of a gas well in a gas storage facility according to claim 2, characterized in that: The calculation model of the liquid carrying factor of the gas well in the gas storage reservoir is: In the formula, α i is the liquid carrying factor of gas well i in the gas storage, dimensionless; q gi is the actual gas production of gas well i in the gas storage, in units of 10 4 m 3 / d;q cri is the critical liquid carrying rate of gas well i in the gas storage, in units of 10 4 m 3 / d.

5. The method for calculating liquid production of a gas well in a gas storage facility according to claim 2 or 3, characterized in that: The critical liquid carrying flow rate of each gas well in the gas storage is calculated as follows: In the formula, q cri is the critical liquid carrying rate of gas well i in the gas storage, A is the cross-sectional area of ​​the oil pipe of gas well i in the gas storage, in m 2 ; P is the bottom hole flow pressure of gas well i in the gas storage reservoir, in MPa; σ is the interfacial tension between gas and water phases, in N / m; g is the constant coefficient, ρ L is the density of the liquid produced by gas well i in the gas storage, in kg / m 3 ; ρ g is the density of the gas produced by gas well i in the gas storage, in kg / m 3 ; Z is the compression factor of the gas produced by gas well i in the gas storage reservoir, which is dimensionless; T is the bottom hole temperature of gas well i in the gas storage reservoir, in K.

6. The method for calculating liquid production of a gas well in a gas storage facility according to claim 5, characterized in that: The density of gas produced by a gas well in a gas storage reservoir is calculated as follows: Wherein, P is the bottom hole flowing pressure of gas well i in the gas storage reservoir, in MPa; M is the relative molecular mass of the produced gas of gas well i in the gas storage reservoir, dimensionless; Z is the compressibility factor of the produced gas of gas well i in the gas storage reservoir, dimensionless; R is the gas constant, in kJ / (mol·K); T is the bottom hole temperature of gas well i in the gas storage reservoir, in K.

7. The method for calculating the liquid production of a gas well in a gas storage facility according to any one of claims 1 to 4, characterized in that: According to the daily gas production and true liquid supply coefficient of each gas well in the gas storage, the liquid production weighting factor of each gas well in the gas storage is obtained as follows: In the formula, β i is the liquid production weighting factor of gas well i in the gas storage, in units of 10 -4 ·mD·m -2 ; L i is the actual liquid supply coefficient of gas well i in the gas storage, in mD·m; G i is the daily gas production of gas well i in the gas storage, in units of 10 4 m 3 .

8. The method for calculating the liquid production of a gas well in a gas storage facility according to any one of claims 1 to 4, characterized in that: The total daily liquid production of the gas storage is split to obtain the daily liquid production of each gas well in the gas storage as follows: In the formula, Q i is the liquid production of gas well i in the gas storage, in m 3 / d;Q a is the total daily liquid production of the gas storage, in m 3 / d; β i is the liquid production weighting factor of gas well i in the gas storage, in units of 10 -4 ·mD·m -2 ; m is the total number of gas wells in the gas storage, in units of wells.

9. The method for calculating the liquid production of a gas well in a gas storage facility according to any one of claims 2 to 4, characterized in that: The actual production and liquid supply coefficient of each gas well in the gas storage reservoir is the product of the theoretical liquid supply coefficient of the gas well in the gas storage reservoir and the liquid carrying factor.

10. The method for calculating liquid production of a gas well in a gas storage facility according to any one of claims 1 to 4, characterized in that: The daily gas production of each gas well in the gas storage reservoir and the total daily liquid production of the gas storage reservoir are determined based on the production data of the gas storage reservoir.

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