CN116070406A - Shale gas well residual potential evaluation method, shale gas well residual potential evaluation device, shale gas well residual potential evaluation electronic equipment and shale gas well residual potential evaluation medium - Google Patents
Shale gas well residual potential evaluation method, shale gas well residual potential evaluation device, shale gas well residual potential evaluation electronic equipment and shale gas well residual potential evaluation medium Download PDFInfo
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Abstract
The invention discloses a shale gas well residual potential evaluation method, a shale gas well residual potential evaluation device, electronic equipment and a shale gas well residual potential evaluation medium. The method comprises the following steps: respectively determining stratum energy basic information, substance basic information and diversion capacity basic information of a target shale gas well; determining residual potential information of the shale gas well based on stratum energy basic information, substance basic information and diversion capacity basic information; and evaluating the residual potential of the target shale gas well based on the residual potential information. By adopting the technical scheme, the problems of excessive basic data, excessive related fields, lack of uniform evaluation standards and the like are avoided, so that the expression of the residual potential of the target shale gas well is clearer. The data volume used is small, and the residual potential of the target shale gas well can be evaluated more stably. Finally, the whole system can effectively identify the residual potential of different shale gas wells, thereby achieving the purpose of improving the pertinence and the effectiveness of the diving measures and improving the development effect of the gas wells.
Description
Technical Field
The invention relates to the technical field of mineral deposit evaluation, in particular to a shale gas well residual potential evaluation method, a shale gas well residual potential evaluation device, electronic equipment and a shale gas well residual potential evaluation medium.
Background
With the development technology of shale gas wells in China, more shale gas wells are developed.
Then, due to different technical schemes at different times, residual potential in shale gas wells is different, and the traditional evaluation method is too much in basic data, too complex in evaluation process, and involves too many fields and lacks the same evaluation standard.
Disclosure of Invention
The invention provides a shale gas well residual potential evaluation method, a shale gas well residual potential evaluation device, electronic equipment and a shale gas well residual potential evaluation medium, and aims to solve the problems that basic data are more and evaluation standards are difficult to quantify when the shale gas well is evaluated.
According to an aspect of the invention, there is provided a method of assessing residual potential of a shale gas well, the method comprising:
respectively determining stratum energy basic information, substance basic information and diversion capacity basic information of a target shale gas well;
determining residual potential information of the shale gas well based on stratum energy basic information, substance basic information and diversion capacity basic information;
and evaluating the residual potential of the target shale gas well based on the residual potential information.
According to another aspect of the present invention, there is provided an apparatus for evaluating the residual potential of a shale gas well, the apparatus comprising:
the basic information acquisition module is used for respectively determining stratum energy basic information, material basic information and diversion capacity basic information of the target shale gas well;
the potential information determining module is used for determining residual potential information of the shale gas well based on stratum energy basic information, substance basic information and diversion capacity basic information;
a residual potential evaluation module for evaluating the residual potential of the target shale gas well based on the residual potential information
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of evaluating the residual potential of a shale gas well of any embodiment of the invention.
According to another aspect of the invention, there is provided a computer readable storage medium having stored thereon computer instructions for causing a processor to perform the method of evaluating the residual potential of a shale gas well of any embodiment of the invention when executed.
According to the technical scheme, the stratum energy basic information, the substance basic information and the diversion capacity basic information of the target shale gas well are determined, so that the problems of excessive basic data, excessive related fields, lack of unified evaluation standards and the like are avoided, and the residual potential information of the target shale gas well is determined through the stratum energy basic information, the substance basic information and the diversion capacity basic information, so that the expression of the residual potential of the target shale gas well is clear. The residual potential of the target shale gas well is evaluated through the residual potential information, so that the data volume used in the evaluation is small, and the residual potential of the target shale gas well can be evaluated more stably. Finally, the whole system can effectively identify the residual potential of different shale gas wells as much as possible, thereby achieving the aim of improving the pertinence and the effectiveness of the diving measures as much as possible and improving the development effect of the gas wells.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for evaluating the residual potential of a shale gas well provided in accordance with a first embodiment of the present invention;
FIG. 2 is a flow chart of another method for evaluating the residual potential of a shale gas well provided in accordance with a second embodiment of the invention;
fig. 3 is a schematic structural diagram of an evaluation device for residual potential of a shale gas well according to a third embodiment of the invention;
fig. 4 is a schematic structural diagram of an electronic device for implementing a method for evaluating residual potential of a shale gas well according to an embodiment of the invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a method for evaluating residual potential of a shale gas well according to an embodiment of the present invention, where the method may be implemented by a device for evaluating residual potential of a shale gas well, where the device for evaluating residual potential of a shale gas well may be implemented in hardware and/or software, and the device for evaluating residual potential of a shale gas well may be configured in an electronic device with data processing capability. As shown in fig. 1, the method includes:
s110, stratum energy basic information, material basic information and diversion capacity basic information of the target shale gas well are respectively determined.
The formation energy basis information may be a percentage of the energy of the shale gas in the current shale gas well as compared to the shale gas energy in the shale gas well prior to production, wherein the energy includes, but is not limited to, shale gas pressure, kinetic energy, and the like. The material basis information may be a percentage of the current shale gas well residual amount of shale gas in the shale gas well to the total shale gas in the shale gas well prior to production. The conductivity base information may be the volume of unreturned fluid from the formation after injection of fluid into the current target shale gas well, as a percentage of the volume of unreturned fluid after injection of fluid into the target shale gas well prior to production. The target shale gas well may be a shale gas well for which residual potential evaluation of the shale gas well is to be performed.
With the continuous development of shale gas well development technologies, more and more shale gas wells are developed, but the residual potential of shale gas wells developed at different times is different due to the different shale gas well development technologies. In the continued exploitation of gas wells with low residual potential, the shale gas well yield is reduced, and the exploitation cost is higher than the exploitation shale gas amount price.
However, the current shale gas well evaluation often needs too much basic data, involves too much fields and lacks unified evaluation standards, so that an accurate and reasonable evaluation method needs to be determined to evaluate the residual potential of the shale gas well, thereby avoiding the problems.
Before the residual potential of the target shale gas well is evaluated, basic data related to the target shale gas well is acquired, the basic data of the shale gas well is analyzed, and stratum energy basic information, substance basic information and diversion capacity basic information in the target shale gas well are determined. The problems of extensive basic data and wide related fields of the target shale gas well are avoided as much as possible. Wherein the basis may be all data recorded from the production of the target shale gas well to the evaluation thereof, etc. The invention is not limited in this regard.
In one alternative, determining formation energy basis information for a target shale gas well may include steps A1-A3:
and A1, acquiring the current formation pressure and the initial formation pressure of the target shale gas well.
A2, determining a pressure difference coefficient of a target shale gas well based on the current formation pressure and the initial formation pressure; where the pressure difference coefficient = current formation pressure/initial formation pressure.
And A3, taking the pressure difference coefficient as stratum energy basic information of the target shale gas well.
The current formation pressure may be the pressure of shale gas in the target shale gas well as it is being evaluated. The initial formation pressure may be the pressure of shale gas in the target shale gas well before the target shale gas well is not mined.
When the formation energy basic information of the target shale gas well is determined, shale gas exists in the target shale gas well, and the shale gas in the target shale gas well is continuously collected in the exploitation process, so that the gas pressure of the shale gas in the target shale gas well gradually decreases along with exploitation of the target shale gas well, and the formation energy in the target shale gas well is gradually reduced.
Thus, when the formation energy basic information of the target shale gas well is determined, the current formation pressure is detected and recorded, and the initial formation pressure of the target shale gas well is obtained from the basic information of the target shale gas well.
In order to accurately acquire the difference coefficient between the current formation pressure and the initial formation pressure, after acquiring the initial formation pressure and the current formation pressure of the target shale gas well, the pressure difference coefficient can be calculated according to the current formation pressure and the initial formation pressure. The calculation method comprises the following steps:
pressure difference coefficient = current formation pressure/initial formation pressure
And determining the pressure difference coefficient as stratum energy basic information of the target shale gas well. The pressure difference coefficient is used to describe the difference between the current formation pressure and the initial formation pressure. And then obtain:
formation energy basis information = current formation pressure/initial formation pressure
Taking a Wifar shale gas well as an example, the stratum energy basic information calculation formula of the Wifar shale gas well is as follows:
wherein M is stratum energy basic information, P c C is the target shale gas well of the c-th target shale gas well in the Wifar shale gas well, and P is the current stratum pressure i For initial formation pressure, i is the i-th target shale gas well in the Wifar shale gas wells.
Formation energy basis information for a wilan shale gas well is recorded as described in table 1.
TABLE 1
In one alternative, determining the material basis information for the target shale gas well may include steps B1-B3:
and B1, acquiring the current actual cumulative yield and standard well yield of the target shale gas well.
Step B2, determining a yield difference coefficient of the target shale gas well based on the current actual cumulative yield and the standard well yield; where the production difference coefficient= (standard well production-current actual cumulative production)/current actual cumulative production.
And B3, taking the yield difference coefficient as the material basis information of the target shale gas well.
The current actual cumulative amount may be the cumulative amount of shale gas produced from the target shale gas well as it proceeds to the residual potential evaluation of the target shale gas well. The standard well production may be a production calculated from the geographic location of the target shale gas well, the scale of the target shale gas well, and the total production of the shale gas well under the same conditions in the history. The invention is not limited in this regard.
Due to the fact that the shale gas content in the target shale gas well is gradually reduced due to continuous exploitation of the target shale gas well, when substance basic information of the target shale gas well is determined, the current actual accumulated shale gas yield and standard shale gas yield in the target shale gas well are detected.
In order to accurately acquire the shale gas content in the target shale gas well, the shale gas content in the current target shale gas well is calculated after the current actual cumulative yield and the standard well yield are acquired. The calculation method comprises the following steps:
shale gas content in currently targeted shale gas well = standard well production-currently actual cumulative production
After the shale gas content in the current target shale gas well is determined, calculating to obtain a yield difference coefficient of the shale gas content in the current target shale gas well and the standard well yield according to the shale gas content in the current target shale gas well and the standard well yield. The calculation method comprises the following steps:
yield coefficient of difference = shale gas content in current target shale gas well/standard well yield
The two calculation methods are arranged to obtain the following calculation method:
yield coefficient of difference = (standard well yield-current actual cumulative yield)/standard well yield
After determining the yield difference coefficient, determining the yield difference coefficient as material basis information of the target shale gas well, and further obtaining the following calculation method:
substance basis information = (standard well production-current actual cumulative production)/standard well production
Taking a Wifar shale gas well as an example, the calculation formula of the substance basis information of the Wifar shale gas well is as follows:
wherein Z is substance-based information; q (Q) 0 Representing standard well production; q (Q) c Representing the current actual cumulative yield.
As shown in table 2, the material basis information of the wile shale gas well was recorded.
TABLE 2
In one alternative, determining conductivity base information for a target shale gas well may include steps C1-C3:
and C1, acquiring the residual effective fracture volume and the initial effective fracture volume of the target shale gas well.
Step C2, determining the flow conductivity of the target shale gas well based on the residual effective fracture volume and the initial effective fracture volume; where, coefficient of conductivity = remaining effective fracture volume/initial effective fracture volume.
And C3, taking the flow conductivity coefficient as flow conductivity basic information of the target shale gas well.
The remaining effective fracture volume may be the volume of liquid not returned from the formation after injection of the liquid into the current target shale gas well. The initial effective fracture volume may be a volume where fluid is not returned from the formation after injection of fluid into the target shale gas well while the target shale gas well has not been mined. The invention is not limited in this regard.
When the target shale gas well is mined, a fracturing fluid is often required to be injected into the target shale gas well, so that a reservoir fracture network is expanded, and cracks are not closed after the fracturing fluid returns by taking sand grains or ceramic grains and the like in the fracturing fluid as propping agents, so that the fracture network of the reservoir is improved, and shale gas in the shale gas is continuously released and conveyed to the ground surface.
Therefore, the determination of the conductivity basic information can be achieved by calculating the residual effective fracture volume of the target shale gas well and obtaining the initial effective fracture volume, and the calculation method comprises the following steps:
coefficient of conductivity = remaining effective fracture volume/initial effective fracture volume
Taking the flow conductivity coefficient as flow conductivity basic information of the current target shale gas well, and further obtaining:
conductivity base information = remaining effective fracture volume/initial effective fracture volume
Taking a Wifar shale gas well as an example, the flow conductivity basic information calculation formula of the Wifar shale gas well is as follows:
wherein J is basic information of diversion capacity; v (V) 0 Is the initial effective fracture volume; v (V) f Is the effective fracture volume remaining.
As shown in table 3, conductivity base information for the wilson shale gas well is recorded.
TABLE 3 Table 3
| Candidate well | Initial effective fracture volume | Residual effective fracture volume | Basic information of diversion capability |
| Candidate well 1 | 18000 | 6913 | 0.38 |
| Candidate well 2 | 14000 | 6153 | 0.44 |
| Candidate well 3 | 39000 | 25884 | 0.66 |
| Candidate well 4 | 36500 | 24508 | 0.67 |
| Candidate well 5 | 25000 | 10541 | 0.42 |
| Candidate well 6 | 25000 | 7831 | 0.31 |
| Candidate well 7 | 37000 | 14036 | 0.38 |
| Candidate well 8 | 39000 | 19155 | 0.49 |
| Candidate well 9 | 27500 | 12001 | 0.44 |
| Candidate well 10 | 17000 | 5518 | 0.32 |
| Candidate well 11 | 33500 | 11460 | 0.34 |
| Candidate well 12 | 32000 | 10241 | 0.32 |
| Candidate well 13 | 29000 | 12715 | 0.44 |
| Candidate well 14 | 38000 | 8485 | 0.22 |
| Candidate well 15 | 19500 | 6543 | 0.34 |
| Candidate well 16 | 15000 | 5967 | 0.4 |
| Candidate well 17 | 23000 | 9624 | 0.42 |
| Candidate well 18 | 32000 | 11008 | 0.34 |
| Candidate well 19 | 31000 | 6619 | 0.21 |
| Candidate well 20 | 31000 | 4633 | 0.15 |
| Candidate well 21 | 21000 | 3541 | 0.17 |
| Candidate well 22 | 37000 | 9695 | 0.26 |
| Candidate well 23 | 34000 | 2140 | 0.06 |
| Candidate well 24 | 29000 | 4246 | 0.15 |
And S120, determining residual potential information of the target shale gas well based on stratum energy basic information, substance basic information and diversion capacity basic information.
The residual potential information may be various types of parameter information about residual potential in the record target shale gas well.
Although the basic data has been refined and summarized in step 110, more data is generated, and the residual potential of the target shale gas well cannot be directly reflected. Therefore, after the stratum energy basic information, the material basic information and the diversion capacity basic information are obtained from the basic data through calculation, the stratum energy basic information, the material basic information and the diversion capacity basic information can be summarized, and the summarized result is determined to be residual potential information. And further, the expression of the residual potential of the target shale gas well is clearer.
And S130, evaluating the residual potential of the target shale gas well based on the residual potential information.
When the residual potential of the target shale gas well is estimated, besides the excessive data volume, the residual potential of the target shale gas well is difficult to be estimated stably in the traditional method, so that after the steps S110 and S120, residual potential information is acquired, and the data volume in the residual potential information is small, so that the residual potential of the target shale gas well is estimated by using the residual potential information, the data volume used in the estimation is small, and the residual potential of the target shale gas well can be estimated stably.
According to the technical scheme, the stratum energy basic information, the substance basic information and the diversion capacity basic information of the target shale gas well are determined, so that the problems of excessive basic data, excessive related fields, lack of unified evaluation standards and the like are avoided as far as possible, and the residual potential information of the target shale gas well is determined through the stratum energy basic information, the substance basic information and the diversion capacity basic information, so that the residual potential of the target shale gas well is expressed more clearly. The residual potential of the target shale gas well is evaluated through the residual potential information, so that the data volume used in the evaluation is small, and the residual potential of the target shale gas well can be evaluated more stably. Finally, the whole system can effectively identify the residual potential of different shale gas wells, thereby achieving the purpose of improving the pertinence and the effectiveness of the diving measures and improving the development effect of the gas wells.
Example two
Fig. 2 is a flowchart of another method for evaluating residual potential of a shale gas well according to the second embodiment of the present invention, where the process of determining residual potential information of a target shale gas well based on formation energy basis information, material basis information and conductivity basis information in the foregoing embodiment is further optimized on the basis of the foregoing embodiment, and the present embodiment may be combined with each of the alternatives in one or more embodiments. As shown in fig. 2, the method includes:
and S210, respectively determining stratum energy basic information, material basic information and diversion capacity basic information of the target shale gas well.
S220, determining residual potential information of the shale gas well according to the following formula:
residual potential information = a formation energy basis information + B material basis information + C conductivity basis information;
wherein A, B and C are predetermined constants, respectively.
Because the characteristics of different target shale gas wells are different, the influence of stratum energy basic information, material basic information and diversion capacity basic information on the target shale gas wells is different when the residual potential of the target shale gas wells is evaluated. Therefore, the specific gravity of stratum energy basic information, material basic information and diversion capacity basic information in the residual potential information needs to be determined in advance according to the characteristics of the target shale gas well, and the residual potential information which accords with the current target shale gas well is calculated. The calculation method comprises the following steps:
residual potential information = a formation energy basis + B material basis + C conductivity basis
Wherein A, B and C are predetermined constants, respectively.
Illustratively, taking a Wifar shale gas well, when the stratum energy basic information is more than or equal to 0.5, the residual stratum energy is high, when the substance basic information is more than or equal to 0.1, the substance basic information is high, and when the diversion capacity basic information is more than or equal to 0.3, the diversion capacity basic information is high as an example.
And determining the standard of the stratum energy basic information of the target shale gas well according to the geological conditions of the shale gas well in the Wifar region and the stratum energy basic information of the whole shale gas well in the Wifar region.
Referring to table 4, the formation energy basis information evaluation table of the wilms shale gas well is shown.
TABLE 4 Table 4
Where M represents formation energy basis information.
And determining the standard of the material basis information of the target shale gas well according to the yield decreasing curve rate of standard wells in different regions of the shale gas well in the Wifar region.
Referring to table 5, a matter basis information evaluation table for a wilan shale gas well.
TABLE 5
Wherein Z represents substance basis information.
And determining the standard of the diversion capability basic information of the target shale gas well according to the average injection liquid discharge ratio of different areas of the shale gas well in the Weifar area.
Referring to table 6, a table of evaluation of the flow conductivity basic information of the wilms shale gas well.
TABLE 6
Wherein J represents the basic information of the diversion capacity.
After the evaluation standards of the stratum energy basic information, the substance basic information and the diversion capacity basic information are determined, the standards are brought into a formula to obtain:
P＝0.5M+0.1Z+0.3J
where P represents the residual potential information.
And S230, evaluating the residual potential of the target shale gas well based on the residual potential information.
According to the technical scheme, the residual potential information of the shale gas well is determined through a formula, so that the residual potential of the shale gas well can be judged through stratum energy basic information, substance basic information and diversion capacity basic information, and the adaptability modification can be carried out according to the characteristics of the target shale gas well, so that the accuracy and stability of the whole system are ensured as much as possible.
Example III
Fig. 3 is a schematic structural diagram of an evaluation device for residual potential of a shale gas well according to a third embodiment of the present invention. The embodiment can be suitable for obtaining key parameters by extracting basic data, effectively identifying the residual potential of the shale gas well, and carrying out data expression on the residual potential, wherein the device for evaluating the residual potential of the shale gas well can be realized in a form of hardware and/or software, and can be configured in electronic equipment with data processing capability. As shown in fig. 3, the apparatus includes: a basic information acquisition module 310, a potential information determination module 320, and a residual potential assessment module 330. Wherein:
a basic information obtaining module 310, configured to determine stratum energy basic information, substance basic information and diversion capability basic information of the target shale gas well respectively;
the potential information determining module 320 is configured to determine remaining potential information of the shale gas well based on the formation energy basis information, the material basis information, and the conductivity basis information;
the residual potential evaluation module 330 is configured to evaluate the residual potential of the target shale gas well based on the residual potential information.
On the basis of the above embodiment, optionally, the basic information obtaining module 310 includes:
the stratum pressure obtaining unit is used for obtaining the current stratum pressure and the initial stratum pressure of the target shale gas well;
the pressure coefficient determining unit is used for determining a pressure difference coefficient of the target shale gas well based on the current stratum pressure and the initial stratum pressure; wherein, the pressure difference coefficient = current formation pressure/initial formation pressure;
and the stratum energy determining unit is used for taking the pressure difference coefficient as stratum energy basic information of the target shale gas well.
On the basis of the above embodiment, optionally, the basic information obtaining module 310 includes:
the well yield acquisition unit is used for acquiring the current actual cumulative yield of the target shale gas well and the standard well yield;
the production coefficient determining unit is used for determining a production difference coefficient of the target shale gas well based on the current actual cumulative production and the standard well production; wherein, the yield difference coefficient= (standard well yield-current actual cumulative yield)/current actual cumulative yield;
and the substance information determining unit is used for taking the yield difference coefficient as substance basis information of the target shale gas well.
On the basis of the above embodiment, optionally, the basic information obtaining module 310 includes:
the fracture volume acquisition unit is used for acquiring the residual effective fracture volume and the initial effective fracture volume of the target shale gas well;
the flow conductivity determining unit is used for determining the flow conductivity of the target shale gas well based on the residual effective fracture volume and the initial effective fracture volume; wherein, coefficient of flow = remaining effective fracture volume/initial effective fracture volume;
the diversion information determining unit is used for taking the diversion coefficient as diversion capability basic information of the target shale gas well.
Based on the above embodiment, optionally, the potential information determining module 320 is specifically configured to:
determining residual potential information of the shale gas well according to the following formula:
residual potential information = a formation energy basis information + B material basis information + C conductivity basis information;
wherein A, B and C are predetermined constants, respectively.
The shale gas well residual potential evaluation device provided by the embodiment of the invention can execute the shale gas well residual potential evaluation method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example IV
Fig. 4 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as a method of evaluating the residual potential of a shale gas well.
In some embodiments, the method of assessing the residual potential of a shale gas well may be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the shale gas well residual potential assessment method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the method of evaluating the residual potential of the shale gas well in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for evaluating the residual potential of a shale gas well, comprising:
respectively determining stratum energy basic information, substance basic information and diversion capacity basic information of a target shale gas well;
determining residual potential information of the target shale gas well based on the stratum energy basic information, the substance basic information and the diversion capacity basic information;
and evaluating the residual potential of the target shale gas well based on the residual potential information.
2. The method of claim 1, wherein determining formation energy basis information for the target shale gas well comprises:
acquiring the current formation pressure and the initial formation pressure of the target shale gas well;
determining a pressure difference coefficient of the target shale gas well based on the current formation pressure and the initial formation pressure; wherein the pressure difference coefficient = the current formation pressure/the initial formation pressure;
and taking the pressure difference coefficient as stratum energy basic information of the target shale gas well.
3. The method of claim 2, wherein determining material basis information for the target shale gas well comprises:
acquiring the current actual cumulative yield and standard well yield of the target shale gas well;
determining a production difference coefficient of the target shale gas well based on the current actual cumulative production and the standard well production; wherein the production difference coefficient= (the standard well production-the current actual cumulative production)/the current actual cumulative production;
and taking the yield difference coefficient as material basis information of the target shale gas well.
4. The method of claim 3, wherein determining conductivity base information for the target shale gas well comprises:
acquiring the residual effective fracture volume and the initial effective fracture volume of the target shale gas well;
determining a coefficient of conductivity of the target shale gas well based on the remaining effective fracture volume and the initial effective fracture volume; wherein the coefficient of conductivity = the remaining effective fracture volume/the initial effective fracture volume;
and taking the flow conductivity coefficient as flow conductivity basic information of the target shale gas well.
5. The method of any of claims 1-4, wherein determining remaining potential information for the shale gas well based on the formation energy basis information, the material basis information, and the conductivity basis information comprises:
determining residual potential information of the shale gas well according to the following formula:
the residual potential information=a×stratum energy basic information+b×the substance basic information+c×the conductivity basic information;
wherein A, B and C are predetermined constants, respectively.
6. An apparatus for evaluating the residual potential of a shale gas well, comprising:
the basic information acquisition module is used for respectively determining stratum energy basic information, material basic information and diversion capacity basic information of the target shale gas well;
the potential information determining module is used for determining residual potential information of the shale gas well based on the stratum energy basic information, the substance basic information and the diversion capacity basic information;
and the residual potential evaluation module is used for evaluating the residual potential of the target shale gas well based on the residual potential information.
7. The apparatus of claim 6, wherein the base information acquisition module comprises:
the stratum pressure obtaining unit is used for obtaining the current stratum pressure and the initial stratum pressure of the target shale gas well;
a pressure coefficient determining unit for determining a pressure difference coefficient of the target shale gas well based on the current stratum pressure and the initial stratum pressure; wherein the pressure difference coefficient = the current formation pressure/the initial formation pressure;
and the stratum energy determining unit is used for taking the pressure difference coefficient as stratum energy basic information of the target shale gas well.
8. The apparatus of claim 7, wherein the base information acquisition module comprises:
the well yield obtaining unit is used for obtaining the current actual cumulative yield of the target shale gas well and the standard well yield;
a production coefficient determining unit, configured to determine a production difference coefficient of the target shale gas well based on the current actual cumulative production and the standard well production; wherein the production difference coefficient= (the standard well production-the current actual cumulative production)/the current actual cumulative production;
and the substance information determining unit is used for taking the yield difference coefficient as substance basis information of the target shale gas well.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of evaluating the residual potential of a shale gas well of any of claims 1-5.
10. A computer readable storage medium storing computer instructions for causing a processor to perform the method of evaluating residual potential of a shale gas well of any of claims 1-5.
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