CN113222204B - Fracture-cavity type oil reservoir stable production well yield prediction method, device, equipment and storage medium - Google Patents
Fracture-cavity type oil reservoir stable production well yield prediction method, device, equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides a method, a device, equipment and a storage medium for predicting the stable yield of a fracture-cavity oil reservoir, wherein the method comprises the following steps: determining a stable production period interval of a target stable production well; taking the lower limit of the stable production period interval as a first stable production period, and calculating the yield per unit time under each well control reserve in the first stable production period; the upper limit of the stable production period interval is taken as a second stable production period, and the unit time yield of each well controlled reserve in the second stable production period is calculated; establishing a first curve according to the unit time yield of each well control reserve in the first stable production period, establishing a second curve according to the unit time yield of each well control reserve in the second stable production period, wherein the abscissa of the first curve and the second curve is the well control reserve, the ordinate is the unit time yield, and yield values in the first curve and the second curve form a yield interval; when the data point composed of the current production of the target stable production well and the current well control reserve is located in the production interval, the production interval is the predicted production interval of the target stable production well.
Description
Technical Field
The invention relates to the technical field of oil and gas reservoir development, in particular to a method, a device, equipment and a storage medium for predicting the stable well yield of a fracture-cavity oil reservoir.
Background
The fracture-cavity type carbonate reservoir is a special reservoir taking corrosion cavities, holes and cracks as main reservoir spaces and is mainly distributed in a Tarim basin, a Sichuan basin and a Bohai Bay basin. The fracture-cavity type oil reservoir has extremely strong heterogeneity, the physical properties of the matrix are generally poor, the internal connectivity of the corrosion cavity is good, the pipe flow characteristics are mainly used, when oil wells are drilled or communicated with the corrosion cavity through cracks, the scale of the cavity and the communicated holes determines the production condition of the oil well, when the scale is large, the oil well yield is expressed as long-term stable yield, and when the scale is small, the oil well yield is expressed as gradual decrease and rapid.
The development scale of the corrosion cavity and the hole of the reservoir layer of the fracture-cavity type carbonate reservoir of the Tarim basin is large, the proportion of the stable production well is large, but the research on the stable production well yield of the fracture-cavity type carbonate reservoir at home and abroad is relatively less, and the corresponding experience is lacking, so that the current adjustment of the production allocation and the working system of the oil wells is lacking.
Disclosure of Invention
The embodiment of the invention provides a method for predicting the stable well yield of a fracture-cavity type oil reservoir, which aims to solve the technical problem that the stable well yield of the fracture-cavity type carbonate oil reservoir cannot be predicted in the prior art. The method comprises the following steps:
determining a stable production period interval of a target stable production well;
taking the lower limit of the stable production period interval as a first stable production period, and calculating the yield per unit time under each well control reserve in the first stable production period; the upper limit of the stable production period interval is taken as a second stable production period, and the unit time yield of each well controlled reserve in the second stable production period is calculated;
establishing a first curve according to the unit time yield of each well control reserve in a first stable production period, and establishing a second curve according to the unit time yield of each well control reserve in a second stable production period, wherein the abscissa of the first curve and the second curve is the well control reserve, the ordinate is the unit time yield, and yield values in a section between the first curve and the second curve form a yield section;
and acquiring the current yield and the current well control reserve of the target stable yield well, and determining the yield interval as a predicted yield interval of the target stable yield well when data points consisting of the current yield and the current well control reserve are positioned in the yield interval.
The embodiment of the invention also provides a device for predicting the stable well yield of the fracture-cavity type oil reservoir, which aims to solve the technical problem that the stable well yield of the fracture-cavity type carbonate oil reservoir cannot be predicted in the prior art. The device comprises:
the stable production period determining module is used for determining a stable production period interval of the target stable production well;
the output calculation module is used for taking the lower limit of the stable production period interval as a first stable production period and calculating the output per unit time under each well control reserve in the first stable production period; the upper limit of the stable production period interval is taken as a second stable production period, and the unit time yield of each well controlled reserve in the second stable production period is calculated;
the production interval determining module is used for establishing a first curve according to the production per unit time of each well control reserve in the first stable production period and establishing a second curve according to the production per unit time of each well control reserve in the second stable production period, wherein the abscissa of the first curve and the second curve is the well control reserve, the ordinate is the production per unit time, and the production values in the interval between the first curve and the second curve form a production interval;
and the yield interval prediction module is used for acquiring the current yield and the current well control reserve of the target stable yield well, and determining the yield interval as a predicted yield interval of the target stable yield well when a data point consisting of the current yield and the current well control reserve is positioned in the yield interval.
The embodiment of the invention also provides computer equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the random fracture-cavity type oil reservoir stable production well yield prediction method when executing the computer program so as to solve the technical problem that the fracture-cavity type carbonate oil reservoir stable production well yield cannot be predicted in the prior art.
The embodiment of the invention also provides a computer readable storage medium which stores a computer program for executing the arbitrary fracture-cavity type oil reservoir stable well yield prediction method, so as to solve the technical problem that the fracture-cavity type carbonate oil reservoir stable well yield cannot be predicted in the prior art.
In the embodiment of the invention, the lower limit of the stable production period interval is further regarded as a first stable production period by determining the stable production period interval of the target stable production well, and the unit time yield under each well control reserve in the first stable production period is calculated; and finally, determining the yield interval as a predicted yield interval of the target stable yield well when the data point consisting of the current yield of the target stable yield well and the current well control reserve is positioned in the yield interval, and providing a basis for the adjustment of the production allocation and the working system of the stable yield well after the predicted yield interval of the target stable yield well is obtained, so that the adjustment of the production allocation and the working system of the stable yield well according to the predicted yield interval is realized, and the method has important significance for reasonable and efficient development of the oil reservoir.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a flow chart of a method for predicting the production rate of a stable production well of a fracture-cavity oil reservoir, which is provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of a reasonable yield versus well control reserve for a stable interval provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of a regression relationship between reasonable yield and nozzle size provided by an embodiment of the present invention;
FIG. 4 is a block diagram of a computer device according to an embodiment of the present invention;
fig. 5 is a structural block diagram of a device for predicting the yield of a stable production well of a fracture-cavity oil reservoir according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. The exemplary embodiments of the present invention and the descriptions thereof are used herein to explain the present invention, but are not intended to limit the invention.
In an embodiment of the present invention, a method for predicting a stable well yield of a fracture-cavity oil reservoir is provided, as shown in fig. 1, where the method includes:
step 102: determining a stable production period interval of a target stable production well;
step 104: taking the lower limit of the stable production period interval as a first stable production period, and calculating the yield per unit time under each well control reserve in the first stable production period; the upper limit of the stable production period interval is taken as a second stable production period, and the unit time yield of each well controlled reserve in the second stable production period is calculated;
step 106: establishing a first curve according to the unit time yield of each well control reserve in a first stable production period, and establishing a second curve according to the unit time yield of each well control reserve in a second stable production period, wherein the abscissa of the first curve and the second curve is the well control reserve, the ordinate is the unit time yield, and yield values in a section between the first curve and the second curve form a yield section;
step 108: and acquiring the current yield and the current well control reserve of the target stable yield well, and determining the yield interval as a predicted yield interval of the target stable yield well when data points consisting of the current yield and the current well control reserve are positioned in the yield interval.
As can be seen from the flow chart shown in fig. 1, in the embodiment of the present invention, by determining the stable production period interval of the target stable production well, further regarding the lower limit of the stable production period interval as the first stable production period, calculating the production per unit time under each well control reserve in the first stable production period; and finally, determining the yield interval as a predicted yield interval of the target stable yield well when the data point consisting of the current yield of the target stable yield well and the current well control reserve is positioned in the yield interval, and providing a basis for the adjustment of the production allocation and the working system of the stable yield well after the predicted yield interval of the target stable yield well is obtained, so that the adjustment of the production allocation and the working system of the stable yield well according to the predicted yield interval is realized, and the method has important significance for reasonable and efficient development of the oil reservoir.
In a specific implementation, the stable production well may be a fracture-cavity oil reservoir well, where the stable production well is an oil well with a annual yield reduction rate lower than a preset value, and for example, the preset value may be 5%.
In specific implementation, in this embodiment, the production stability period interval of the target production stability well is determined by:
determining the minimum stable production period of the target stable production well according to the development scheme information, the production planning information and the single well life cycle information of the target stable production well, and determining the maximum stable production period of the target stable production well;
the minimum stable period is determined as the lower limit of the stable period, and the maximum stable period is determined as the upper limit of the stable period.
Specifically, the stable production period of the target stable production well is an annual value, for example, 5 years, 6 years or 10 years, and the like, for example, according to development scheme information, yield planning information, single well life cycle information and the like of the target stable production well, the minimum stable production period of the target stable production well can be comprehensively determined to be 5 years, the maximum stable production period of the target stable production well can be comprehensively determined to be 7 years, and then the stable production period interval of the target stable production well is 5 years to 7 years.
In specific implementation, the production per unit time under each well control reserve in the first stable production period and the second stable production period may be daily production, monthly production or annual production, and specifically, the daily production under each well control reserve may be calculated by the following formula:
wherein q h For daily yield, p i Is the original pressure of the oil reservoir, p f N is well control reserve, t is stable production age, C is the reservoir abandoned pressure t Is the comprehensive compression coefficient of the oil deposit, mu is the viscosity of crude oil, B is the volume coefficient of crude oil, K is the permeability of the oil deposit reservoir, h is the effective thickness of the oil deposit reservoir, r e For well control radius, r w Is the radius of the wellbore.
Specifically, well control reserves can be calculated by a material balance method and a modern yield decreasing analysis method.
For example, the target stable well is one oil well of a fracture-cavity oil reservoir, the yield is not decreased, and the well control reserve of the target stable well is 225 ten thousand tons. The original pressure of the oil deposit is 50 megapascals, the abandoned pressure of the oil deposit is 15 megapascals, the viscosity of crude oil is 1 millipascal per second, the volume coefficient of crude oil is 1.2, the permeability of the oil deposit is 50 millidarcy, and the comprehensive compression coefficient of the oil deposit is 0.003 (megapascal) -1 The reservoir thickness was 50 meters and the wellbore radius was 0.1 meters.
In specific implementation, after calculating the output per unit time under each well control reserve in the first stable production period and the second stable production period, respectively establishing a first curve and a second curve, and making the first curve and the second curve into a relation chart of the output and the well control reserve, wherein the abscissa is the well control reserve, the ordinate is the output per unit time, as shown in fig. 2 (taking the first stable production period as 5 years and the second stable production period as 7 years as an example), and the relation chart of the output and the well control reserve can determine that the output value in the interval between the first curve and the second curve forms the output interval.
In particular, to determine the predicted production interval of the target stable production well, in this embodiment, when the data point composed of the current production and the current well control reserves is not located in the production interval, as shown in fig. 2 (the production of the data point a composed of the current production and the current well control reserves is 60 square/day), the production per unit time under each well control reserve in the first stable production period and/or the second stable production period may be adjusted, for example, according to the composition of the formula (1), the stable production period t in the formula (1) is adjusted to achieve the purpose of adjusting the production per unit time under each well control reserve until the data point composed of the current production and the current well control reserves is located in the production interval. For example, the adjusted production interval is 90 to 124 square/day, and the production of data point a is 60 square/day, so that data point a is located in the production interval, and the predicted production interval for the target stable production well can be determined from 90 to 124 square/day.
In particular, after determining the predicted yield interval of the target stable yield well, in order to facilitate production allocation and the like of the stable yield well according to the predicted yield interval, in this embodiment, a corresponding size of the choke can be determined for each predicted yield value in the predicted yield interval, as shown in fig. 3, so that the size of the choke can be adjusted directly according to the size of the choke. For example, according to the yield data and the choke size data of the block capacity well test, establishing a relation equation of the yield and the choke size;
and substituting each predicted yield in the predicted yield interval of the target stable yield well into the relation equation respectively to obtain the size of the oil nozzle corresponding to each predicted yield of the target stable yield well in the stable yield period.
Specifically, the relational equation is as follows:
y＝0.0261×q h +0.8351 (2)
wherein y is the size of the oil nozzle, q h Is the yield.
For example, according to the predicted production interval of the target stable production well being 90 square/day to 124 square/day, the above relation equation (2) is brought, and the size interval of the oil nozzle corresponding to the predicted production interval of the target stable production well is calculated to be 3.5 mm to 4 mm.
In this embodiment, a regression method such as fitting correlation may be used to establish the above-described relational equation.
In this embodiment, a computer device is provided, as shown in fig. 4, including a memory 402, a processor 404, and a computer program stored in the memory and capable of running on the processor, where the processor implements any of the methods for predicting stable production well production of a fracture-cave oil reservoir when executing the computer program.
In particular, the computer device may be a computer terminal, a server or similar computing means.
In this embodiment, a computer readable storage medium is provided, in which a computer program for executing any of the above-described fracture-cave reservoir steady well production prediction methods is stored.
In particular, computer-readable storage media, including both permanent and non-permanent, removable and non-removable media, may be used to implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer-readable storage media include, but are not limited to, phase-change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Disks (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable storage media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
Based on the same inventive concept, the embodiment of the invention also provides a fracture-cavity type oil reservoir stable production well production prediction device, as described in the following embodiment. Because the principle of solving the problem of the fracture-cavity type oil reservoir stable yield prediction device is similar to that of the fracture-cavity type oil reservoir stable yield prediction method, the implementation of the fracture-cavity type oil reservoir stable yield prediction device can be referred to the implementation of the fracture-cavity type oil reservoir stable yield prediction method, and repeated parts are omitted. As used below, the term "unit" or "module" may be a combination of software and/or hardware that implements the intended function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
FIG. 5 is a block diagram of a device for predicting the production rate of a stable production well of a fracture-cavity oil reservoir according to an embodiment of the present invention, as shown in FIG. 5, the device includes:
the stable production period determining module 502 is configured to determine a stable production period interval of the target stable production well;
the output calculating module 504 is configured to calculate the output per unit time under each well control reserve in the first stable production period by regarding the lower limit of the stable production period interval as the first stable production period; the upper limit of the stable production period interval is taken as a second stable production period, and the unit time yield of each well controlled reserve in the second stable production period is calculated;
the production interval determining module 506 is configured to establish a first curve according to the production per unit time of each well control reserve in the first stable production period, and establish a second curve according to the production per unit time of each well control reserve in the second stable production period, where the abscissa of the first curve and the second curve is the well control reserve, the ordinate is the production per unit time, and the production values in the interval between the first curve and the second curve form a production interval;
and the yield interval prediction module 508 is configured to obtain a current yield and a current well control reserve of the target stable yield well, and determine the yield interval as a predicted yield interval of the target stable yield well when a data point formed by the current yield and the current well control reserve is located in the yield interval.
In one embodiment, the stable production period determining module 502 is configured to determine a minimum stable production period of the target stable production well and determine a maximum stable production period of the target stable production well according to the development scheme information, the production planning information, and the single well life cycle information of the target stable production well; the minimum stable period is determined as the lower limit of the stable period interval, and the maximum stable period is determined as the upper limit of the stable period interval.
In one embodiment, the production calculation module 504 calculates daily production for each well control reserve by the following formula:
wherein q h For daily yield, p i Is the original pressure of the oil reservoir, p f N is well control reserve, t is stable production age, C is the reservoir abandoned pressure t Is an oil reservoir comprehensiveThe compression coefficient is combined, mu is the viscosity of crude oil, B is the volume coefficient of crude oil, K is the permeability of an oil reservoir, h is the effective thickness of the oil reservoir, r e For well control radius, r w Is the radius of the wellbore.
In one embodiment, the apparatus further comprises:
and the adjusting module is used for adjusting the unit time yield under each well control reserve in the first stable production period and/or the second stable production period until the data point formed by the current yield and the current well control reserve is positioned in the yield interval when the data point formed by the current yield and the current well control reserve is not positioned in the yield interval.
In one embodiment, the apparatus further comprises:
the equation building module is used for building a relation equation of the yield and the size of the oil nozzle according to the yield data and the size data of the oil nozzle of the block yield well test;
and the oil nozzle size calculation module is used for substituting each predicted yield in the predicted yield interval of the target stable yield well into the relation equation respectively to obtain the oil nozzle size corresponding to each predicted yield of the target stable yield well in the stable yield period.
In one embodiment, the relationship equation is as follows:
y＝0.0261×q h +0.8351
wherein y is the size of the oil nozzle, q h Is the yield.
The embodiment of the invention realizes the following technical effects: the method comprises the steps of determining a stable production period interval of a target stable production well, further regarding the lower limit of the stable production period interval as a first stable production period, and calculating the yield per unit time under each well control reserve in the first stable production period; and finally, determining the yield interval as a predicted yield interval of the target stable yield well when the data point consisting of the current yield of the target stable yield well and the current well control reserve is positioned in the yield interval, and providing a basis for the adjustment of the production allocation and the working system of the stable yield well after the predicted yield interval of the target stable yield well is obtained, so that the adjustment of the production allocation and the working system of the stable yield well according to the predicted yield interval is realized, and the method has important significance for reasonable and efficient development of the oil reservoir.
It will be apparent to those skilled in the art that the modules or steps of the embodiments of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a storage device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than what is shown or described, or they may be separately fabricated into individual integrated circuit modules, or a plurality of modules or steps in them may be fabricated into a single integrated circuit module. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations can be made to the embodiments of the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A fracture-cavity type oil reservoir stable production well yield prediction method is characterized by comprising the following steps:
determining a stable production period interval of a target stable production well;
taking the lower limit of the stable production period interval as a first stable production period, and calculating the yield per unit time under each well control reserve in the first stable production period; the upper limit of the stable production period interval is taken as a second stable production period, and the unit time yield of each well controlled reserve in the second stable production period is calculated;
establishing a first curve according to the unit time yield of each well control reserve in a first stable production period, and establishing a second curve according to the unit time yield of each well control reserve in a second stable production period, wherein the abscissa of the first curve and the second curve is the well control reserve, the ordinate is the unit time yield, and yield values in a section between the first curve and the second curve form a yield section;
acquiring the current yield and the current well control reserve of the target stable yield well, and determining the yield interval as a predicted yield interval of the target stable yield well when data points consisting of the current yield and the current well control reserve are positioned in the yield interval;
wherein determining a stable production interval of the target stable production well comprises:
determining the minimum stable production period of the target stable production well according to the development scheme information, the production planning information and the single well life cycle information of the target stable production well, and determining the maximum stable production period of the target stable production well;
determining the minimum stable period as the lower limit of the stable period interval, and determining the maximum stable period as the upper limit of the stable period interval; the production per unit time under each well control reserve in the first stable production period and the second stable production period is daily production;
daily production at each well control reserve was calculated by the following formula:
wherein q h For daily yield, p i Is the original pressure of the oil reservoir, p f N is well control reserve, t is stable production age, C is the reservoir abandoned pressure t Is the comprehensive compression coefficient of the oil deposit, mu is the viscosity of crude oil, B is the volume coefficient of crude oil, K is the permeability of the oil deposit reservoir, h is the effective thickness of the oil deposit reservoir, r e For well control radius, r w Is the radius of the shaft;
further comprises:
when the data point composed of the current yield and the current well control reserves is not located in the yield interval, the yield per unit time under each well control reserve in the first stable yield period and/or the second stable yield period is adjusted by adjusting the stable yield period t until the data point composed of the current yield and the current well control reserves is located in the yield interval.
2. The method for predicting stable well production of a fracture-cavity oil reservoir of claim 1, further comprising:
establishing a relation equation of the yield and the size of the choke according to the yield data and the size data of the choke of the block yield well test;
substituting each predicted yield in the predicted yield interval of the target stable yield well into the relation equation respectively to obtain the size of the oil nozzle corresponding to each predicted yield of the target stable yield well in the stable yield period;
wherein the relational equation is as follows:
y＝0.0261×q h +0.8351
wherein y is the size of the oil nozzle, q h Is the yield.
3. The utility model provides a fracture-cavity type oil reservoir steady production well output prediction device which characterized in that includes:
the stable production period determining module is used for determining a stable production period interval of the target stable production well;
the output calculation module is used for taking the lower limit of the stable production period interval as a first stable production period and calculating the output per unit time under each well control reserve in the first stable production period; the upper limit of the stable production period interval is taken as a second stable production period, and the unit time yield of each well controlled reserve in the second stable production period is calculated;
the production interval determining module is used for establishing a first curve according to the production per unit time of each well control reserve in the first stable production period and establishing a second curve according to the production per unit time of each well control reserve in the second stable production period, wherein the abscissa of the first curve and the second curve is the well control reserve, the ordinate is the production per unit time, and the production values in the interval between the first curve and the second curve form a production interval;
the yield interval prediction module is used for acquiring the current yield and the current well control reserve of the target stable yield well, and determining the yield interval as a predicted yield interval of the target stable yield well when a data point consisting of the current yield and the current well control reserve is positioned in the yield interval;
the stable production period determining module is specifically used for determining the minimum stable production period of the target stable production well and determining the maximum stable production period of the target stable production well according to the development scheme information, the production planning information and the single well life cycle information of the target stable production well; determining the minimum stable period as the lower limit of the stable period interval, and determining the maximum stable period as the upper limit of the stable period interval; the production per unit time under each well control reserve in the first stable production period and the second stable production period is daily production;
the production calculation module calculates daily production for each well control reserve by the following formula:
wherein q h For daily yield, p i Is the original pressure of the oil reservoir, p f N is well control reserve, t is stable production age, C is the reservoir abandoned pressure t Is the comprehensive compression coefficient of the oil deposit, mu is the viscosity of crude oil, B is the volume coefficient of crude oil, K is the permeability of the oil deposit reservoir, h is the effective thickness of the oil deposit reservoir, r e For well control radius, r w Is the radius of the shaft;
further comprises:
and the adjusting module is used for adjusting the unit time yield under each well control reserve in the first stable production period and/or the second stable production period by adjusting the stable production period t when the data point formed by the current yield and the current well control reserve is not located in the yield interval until the data point formed by the current yield and the current well control reserve is located in the yield interval.
4. The fracture-cavity reservoir stable well production prediction apparatus of claim 3, further comprising:
the equation building module is used for building a relation equation of the yield and the size of the oil nozzle according to the yield data and the size data of the oil nozzle of the block yield well test;
the oil nozzle size calculation module is used for substituting each predicted yield in the predicted yield interval of the target stable yield well into the relation equation respectively to obtain the oil nozzle size corresponding to each predicted yield of the target stable yield well in the stable yield period;
wherein the relational equation is as follows:
y＝0.0261×q h +0.8351
wherein y is the size of the oil nozzle, q h Is the yield.
5. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the computer program, implements the fracture-cave reservoir steady well production prediction method of any one of claims 1 to 2.
6. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program which, when executed by a processor, implements the fracture-cave reservoir steady well production prediction method of any one of claims 1 to 2.
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