Method, device and equipment for determining initial water in initial stage of reservoir diagenesis evolution and medium

Abstract

The invention discloses a method, device and equipment for determining initial water in the initial stage of reservoir diagenesis evolution and a medium. The method comprises the following steps: determining initial parameter information of a target reservoir at the initial stage of diagenesis evolution according to current reservoir information of the target reservoir; establishing a static reaction model of the initial mineral components and the initial water according to the initial parameter information, and performing iterative numerical simulation operation on the static reaction model according to the initial parameter information; determining reference initial water information according to a numerical simulation operation result; and performing diagenesis simulation according to the reference initial water information, and determining target initial water information according to a diagenesis simulation result. The method provides effective technical support for determination of initial water in reservoir diagenesis simulation, and mineral dissolution, conversion and precipitation reactions in the reservoir diagenesis process can be simulated more accurately, so that the accuracy and scientificity of diagenesis simulation are improved.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum geological exploration, and in particular to a method, device, equipment and medium for determining initial water in the early stage of reservoir diagenesis evolution. Background Art

[0002] Accurate restoration of reservoir diagenetic evolution helps reveal the reservoir development mechanism and is the key to improving reservoir evaluation. Diagenetic simulation can quantitatively reproduce the reservoir diagenetic evolution process during the geological history. It takes into account factors such as tectonic evolution, sedimentary diagenetic environment, temperature and pressure conditions, fluid system, rock-fluid interaction, etc. It is a method and technology for reshaping the diagenetic evolution history. It can solve the problem of diagenetic stage evolution at different diagenetic time spans and spatial scales, and become an effective technology for reservoir evaluation and prediction.

[0003] However, the restoration of diagenetic evolution is a work of present-day research. Through various testing techniques, only the current stratum-related data can be obtained, but the information of the initial diagenesis period cannot be accurately known. Whether it is physical simulation or numerical simulation, the composition and content of initial water in diagenetic simulation affect the subsequent evolution of sedimentary reservoirs, determine the type and degree of subsequent diagenesis, and determine the accuracy of diagenetic process restoration. Summary of the invention

[0004] The present invention provides a method, device, equipment and medium for determining initial water in the early stage of reservoir diagenesis evolution, so as to solve the problem that information in the initial stage of diagenesis cannot be accurately obtained.

[0005] According to one aspect of the present invention, a method for determining initial water in the early stage of reservoir diagenesis evolution is provided, comprising:

[0006] Determine the initial parameter information of the target reservoir at the early stage of diagenetic evolution according to the current reservoir information of the target reservoir;

[0007] A static reaction model of initial mineral components and initial water is established according to the initial parameter information, and an iterative numerical simulation operation is performed on the static reaction model according to the initial parameter information;

[0008] Determine reference initial water information according to numerical simulation results;

[0009] A diagenetic simulation is performed according to the reference initial water information, and the target initial water information is determined according to the diagenetic simulation result.

[0010] According to another aspect of the present invention, there is provided a device for determining initial water in the early stage of reservoir diagenesis evolution, comprising:

[0011] Initial parameter information determination module: used to determine the initial parameter information of the target reservoir at the early stage of diagenetic evolution according to the current reservoir information of the target reservoir;

[0012] Numerical simulation operation module: used to establish a static reaction model of initial mineral components and initial water according to the initial parameter information, and perform iterative numerical simulation operation on the static reaction model according to the initial parameter information;

[0013] Reference initial water information determination module: used to determine reference initial water information according to numerical simulation calculation results;

[0014] Initial water information determination module: used to perform diagenetic simulation based on reference initial water information, and determine target initial water information based on the diagenetic simulation results.

[0015] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for determining initial water in the early stage of reservoir diagenetic evolution described in any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for determining initial water in the early stage of reservoir diagenetic evolution as described in any embodiment of the present invention when executed.

[0020] The technical solution of the embodiment of the present invention, in the absence of initial water data, determines the initial water information by using forward simulation and inversion simulation to improve the accuracy and effectiveness of diagenetic simulation; inputs the obtained initial water information into the static reaction model for iterative numerical calculation to obtain the numerical simulation operation result, and judges whether the calculated initial water meets the conditions according to the judgment conditions of the initial water and the initial mineral components, and proposes the adjustment scheme of the initial water according to the specific situation, which is conducive to more accurate and effective determination of the initial water composition and content. Perform diagenetic simulation according to the obtained initial water information, compare the simulation results with the detection results, judge whether the calculated initial water information is correct, and adjust the collected data if it is not correct, which is conducive to improving the accuracy of determining the initial water composition and content of the target reservoir in the early stage of diagenesis. The method provides effective technical support for the determination of initial water in reservoir diagenesis simulation, and can more accurately simulate the mineral dissolution, transformation and precipitation reactions in the reservoir diagenesis process, thereby improving the accuracy and scientificity of diagenetic simulation.

[0021] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a flow chart of a method for determining initial water in the early stage of reservoir diagenetic evolution provided in accordance with the first embodiment of the present invention;

[0024] Figure 2 A schematic structural diagram of an initial water determination device in the early stage of reservoir diagenesis evolution provided by a second embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of an electronic device for a method for determining initial water in the early stage of reservoir diagenetic evolution according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "candidate", "target", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] Embodiment 1

[0029] Figure 1 A flowchart of a method for determining initial water in the early stage of reservoir diagenesis evolution is provided for the first embodiment of the present invention. This embodiment is applicable to the situation where it is necessary to determine the initial water composition and content in the early stage of reservoir diagenesis evolution recovery. The method can be executed by an initial water determination device in the early stage of reservoir diagenesis evolution. The initial water determination device in the early stage of reservoir diagenesis evolution can be implemented in the form of hardware and / or software. The initial water determination device in the early stage of reservoir diagenesis evolution can be configured in any electronic device with network communication function. Figure 1 As shown, the method includes:

[0030] S110. Determine initial parameter information of the target reservoir at an early stage of diagenetic evolution according to current reservoir information of the target reservoir.

[0031] The target reservoir may be a reservoir for which the initial water and its content in the early stage of the diagenetic evolution process need to be determined, such as the target reservoir may be all types of reservoirs such as clastic rock and carbonate.

[0032] The current reservoir information may be the current formation information of the target reservoir during simulation. The initial parameter information of the target reservoir at the initial stage of diagenesis evolution may be the formation parameter information of the formation at the initial stage of diagenesis evolution obtained by simulating the current reservoir information and capable of providing conditions for diagenesis.

[0033] Furthermore, the simulation method can be forward simulation and inversion simulation. Among them, forward simulation is a method of obtaining the theoretical value of the geological body by constructing a mathematical model or observing the numerical value of the geophysical effect produced by the model by constructing a physical model in geophysical exploration research based on the shape, occurrence and physical property data of the geological body. Inversion modeling is a method to help analyze and interpret empirical observations by determining the size and frequency of process parameters of the forward model whose output matches the observation.

[0034] In the above steps, in the absence of initial water data, the forward simulation and inversion model are combined to determine the initial parameter information and improve the accuracy and effectiveness of diagenetic simulation.

[0035] Optionally, determining the initial parameter information of the target reservoir at the early stage of diagenetic evolution according to the current reservoir information of the target reservoir includes steps A1-A2:

[0036] Step A1: determine the current formation water information, geochemical reaction and sedimentary environment of the target reservoir during diagenetic evolution as the current reservoir information of the target reservoir.

[0037] Formation water information can be a general term for oil layer water and external water. It mainly includes the types and concentrations of ions in formation water, mineralization, etc. Geochemical reactions in the process of diagenetic evolution can be chemical reactions caused by the movement and changes of the earth's crust during the process of diagenetic evolution, such as volcanic eruptions, tsunamis, etc., which cause crustal movement and thus chemical reactions, changing the physical properties of the strata in the crust. The chemical reactions of the earth can be obtained through methods such as mineral content testing or solar isotope testing. The sedimentary environment in the process of diagenetic evolution can be the initial environment of the reservoir before diagenetic evolution, such as acidic environment, alkaline environment, seawater environment, etc. The sedimentary environment in the process of diagenetic evolution can be obtained through geological testing.

[0038] The current formation water information, geochemical reactions and sedimentary environment of the target reservoir detected through various geological detection methods will be used as the current reservoir information of the target reservoir.

[0039] Step A2: determining the initial diagenetic environment, diagenetic time, simulated initial mineral components and simulated initial water information of the target reservoir according to the current reservoir information of the target reservoir as initial parameter information.

[0040] The diagenetic environment may be the relative position of the geomorphic unit and the buried sediment during the diagenesis process of sediments turning into rocks, as well as the conditions of the diagenetic medium, physical, chemical, biological conditions, etc. The initial diagenetic environment may be the environment of the sedimentary rock before the sediments turn into rocks. The diagenetic time may be the time required to form the rock formation conditions of the target reservoir.

[0041] The initial mineral components may be the mineral components contained in the target reservoir at the initial stage of diagenesis, and the simulated initial mineral components may be the mineral components contained in the target reservoir at the initial stage of diagenesis and the corresponding contents obtained by analyzing the current reservoir information of the target reservoir.

[0042] The initial water information may be the chemical properties of the initial water in the early stage of diagenesis of the target reservoir. The initial water chemical properties are based on the formation water chemical properties of the study area, and determine the water chemical type or water chemical ion composition of the study area. The study area is the area where the target reservoir is located. The simulated initial water information may be the formation water chemical properties of the target reservoir in the early stage of diagenetic evolution obtained by simulation based on the current reservoir information of the target reservoir.

[0043] The current reservoir information of the target reservoir is simulated to obtain the initial diagenetic environment, diagenetic time, simulated initial mineral composition and simulated initial water information of the target reservoir as initial parameter information.

[0044] S120, establishing a static reaction model of initial mineral components and initial water according to the initial parameter information, and performing iterative numerical simulation operations on the static reaction model according to the initial parameter information.

[0045] The static reaction model can be an ecological environment that can simulate the natural reservoir diagenesis process. Iterative numerical simulation calculations can be performed using numerical simulation software such as TOUGHREACT.

[0046] A static reaction model of initial mineral components and initial water information in a diagenetic environment is established based on the initial parameter information, and some parameters in the initial parameter information are used as inputs of the static reaction model for iterative numerical simulation operations.

[0047] Furthermore, before establishing the static reaction model, it is also necessary to set the simulation initial water information. The setting of the simulation initial water information is based on the information overview of the study area. If the formation water ion composition of the study area has been determined, the simulation initial water information is set to the formation water ion composition; if the formation water ion composition of the study area is unknown, but it is determined that the formation water salinity of the study area is high, then the simulation initial water information is set to NaCl solution; if the formation water ion composition of the study area is unknown, but it is determined that the formation water salinity of the study area is low, then the simulation initial water information is set to deionized water solution.

[0048] Optionally, an iterative numerical simulation operation is performed on the static reaction model according to the initial parameter information, including step B1:

[0049] Step B1: Based on the initial diagenetic environment and diagenetic time, the simulated initial mineral composition and the simulated initial water information are input into the static reaction model as initial iteration values ​​to perform iterative numerical simulation operations.

[0050] The simulated initial mineral composition and the simulated initial water information are used as the initial iteration values ​​of the static reaction model, and the diagenetic process is numerically iterated according to the initial diagenetic environment and diagenetic time.

[0051] Optionally, the target reservoir includes at least two diagenetic stages, each diagenetic stage corresponding to a different diagenetic environment.

[0052] The diagenetic stage can be referred to as the diagenetic evolution period formed by the changes in factors such as burial depth, ground temperature, pressure, and the interaction with fluids such as formation water during the burial process of sedimentary rocks.

[0053] Accordingly, based on the initial diagenetic environment and diagenetic time, the simulated initial mineral composition and the simulated initial water information are input into the static reaction model as initial iteration values, and an iterative numerical simulation operation is performed, including steps C1-C2:

[0054] Step C1: Based on the initial diagenetic environment and diagenetic time, the simulated initial mineral composition and the simulated initial water information are input into the static reaction model as initial iteration values ​​to obtain the intermediate initial water information corresponding to the initial diagenetic environment.

[0055] The simulated initial mineral composition and the simulated initial water information are used as the initial iteration values ​​of the static reaction model. The diagenetic process is numerically iterated according to the initial diagenetic environment and diagenetic time. The initial water information calculated according to the initial diagenetic environment is used as the intermediate initial water information.

[0056] Step C2: using the intermediate initial water information as the initial iteration value of the next diagenetic stage, and performing numerical simulation calculations of the static reaction model based on the diagenetic environment corresponding to the next diagenetic stage, until the numerical simulation calculations of all diagenetic stages are completed.

[0057] The calculated intermediate initial water information is used as the simulated initial water information for the next diagenetic stage calculation, and this information and the simulated initial mineral components corresponding to the diagenetic environment are used as the input values ​​of the static reaction model for numerical simulation. When there are multiple diagenetic stages, the above calculations are performed continuously until the numerical simulation of all diagenetic stages is completed.

[0058] S130. Determine reference initial water information according to the numerical simulation calculation results.

[0059] It is determined whether the reference initial water information meets the conditions according to the results of the numerical simulation operation.

[0060] Optionally, determining the reference initial water information according to the numerical simulation calculation results includes steps D1-D3:

[0061] Step D1: judging whether the initial mineral components and initial water in the static reaction model have reached equilibrium according to the ion concentration, mineral content change value and mineral dissolution and precipitation trend parameters in the numerical simulation calculation results.

[0062] The initial mineral composition may be the mineral composition information of the simulated initial mineral composition that changes continuously during the numerical simulation operation.

[0063] Mineral content change value = (simulation result mineral content - initial mineral content value) / initial mineral content value. The simulation result mineral content can be the mineral content calculated by numerical simulation operation. The initial mineral content can be the mineral content of the target reservoir in the initial stage of diagenesis.

[0064] The mineral dissolution and precipitation trend parameter log(Q / K) is used to indicate the dissolution or precipitation trend of the mineral. When log(Q / K)>0, the mineral is in a precipitation state; log(Q / K)<0, the mineral is in a dissolution state; log(Q / K=0, the mineral is neither dissolved nor precipitated.

[0065] The criteria for judging whether the initial mineral components and initial water have reached equilibrium are: the change values ​​of ion concentration and mineral content in the static reaction model results are 0, and the absolute value of the mineral dissolution and precipitation trend parameter log (Q / K) in the static reaction model results is close to 0.

[0066] Optionally, judging whether the initial mineral components and initial water in the static reaction model have reached equilibrium according to the ion concentration, mineral content change value and mineral dissolution and precipitation trend parameters in the numerical simulation calculation results includes step E1:

[0067] Step E1: If the change values ​​of the ion concentration and the mineral content are equal to 0, and the difference between the absolute value of the dissolution and precipitation trend parameter of the mineral and 0 is less than a preset threshold, it is determined that the initial mineral components and the initial water have reached equilibrium.

[0068] If the change value of ion concentration and mineral content is equal to 0, and the difference between the absolute value of the mineral dissolution and precipitation trend parameter log (Q / K) and 0 is smaller than the preset threshold, it is considered that the initial mineral component and the initial water have reached equilibrium; if the change value of ion concentration, mineral content, and the absolute value of the mineral dissolution and precipitation trend parameter log (Q / K) in the static reaction model results do not meet the conditions that the initial mineral component and the initial water have not reached equilibrium, it is considered that the initial mineral component and the initial water have not reached equilibrium, and the initial iteration value of the initial mineral component and the initial water information in the static reaction model needs to be adjusted.

[0069] Furthermore, the preset threshold is a pre-set parameter value used to judge the difference between the absolute value of the dissolution and precipitation trend parameter of the mineral and 0. If the difference between the absolute value of the dissolution and precipitation trend parameter of the mineral and 0 is less than the preset threshold, it is considered that it meets the judgment condition.

[0070] Accordingly, the initial iteration values ​​of the initial mineral components and initial water information in the static reaction model are adjusted, including steps F1-F2:

[0071] Step F1: If the change value of the ion concentration and the mineral content is equal to 0, and the difference between the absolute value of the dissolution and precipitation trend parameter of the mineral and 0 is greater than or equal to a preset threshold, the initial water ion concentration of the ions contained in the mineral is adjusted.

[0072] If the change value of ion concentration and mineral content in the static reaction model result is 0, but the difference between the absolute value of the dissolution and precipitation trend parameter log (Q / K) of the mineral in the static reaction model result and 0 is greater than or equal to the preset threshold, the initial water ion concentration of the ions contained in the mineral is adjusted.

[0073] Step F2: If the change value of the ion concentration and / or mineral content is not equal to 0, the change value of the mineral content is less than the preset change threshold, and the difference between the absolute value of the dissolution and precipitation trend parameter of the mineral and 0 is less than the preset threshold, the current mineral content and ion concentration in the static reaction model result are used as the adjusted initial iteration value.

[0074] If the change value of the ion concentration and / or mineral content in the static reaction model result is not 0, but the difference between the dissolution and precipitation trend parameter log(Q / K) of some minerals in the static reaction model result and 0 is less than the preset threshold, and the change value of the mineral content is less than 1%, then the mineral content and ion concentration of the static reaction model result will be used as the new initial mineral component and initial water component, respectively.

[0075] Step D2: If equilibrium is reached, the current initial water information of the static reaction model is used as the reference initial water information.

[0076] The reference initial water information is the initial water information obtained by iterative simulation and calculation of the static reaction model based on the initial parameter information.

[0077] If the initial mineral components and initial water reach equilibrium, the current initial water information of the static reaction model is used as the reference initial water information.

[0078] Step D3: Otherwise, the initial iteration values ​​of the initial mineral components and the initial water information in the static reaction model are adjusted, and the iterative numerical simulation operation is re-performed according to the adjusted initial iteration values ​​until the initial mineral components and the initial water reach equilibrium.

[0079] If the initial mineral components and initial water are not in equilibrium, it indicates that the initial mineral components and initial water information obtained by simulating the current reservoir information of the target reservoir in the static reaction model are incorrect. Therefore, it is necessary to adjust the initial parameter information of the target reservoir and re-perform iterative numerical simulation operations according to the adjusted initial iteration values ​​until the initial mineral components and initial water are in equilibrium.

[0080] The above steps set the balance standard of initial water, which can be used to determine whether the initial water and initial minerals are balanced. An adjustment plan for initial water is proposed according to specific circumstances, which is conducive to more accurate and effective determination of the initial water composition and content.

[0081] S140, performing diagenetic simulation according to the reference initial water information, and determining target initial water information according to the diagenetic simulation result.

[0082] Target initial water information The initial water information of the target reservoir in the early stage of diagenetic evolution. The diagenetic simulation results include information such as mineral transformation and porosity.

[0083] Optionally, performing diagenetic simulation according to the reference initial water information, and determining target initial water information according to the diagenetic simulation result, comprises steps G1-G3:

[0084] Step G1: Perform diagenetic simulation based on the reference initial water information to determine whether the mineral transformation information and porosity change information in the diagenetic simulation results are consistent with the current results of the target reservoir.

[0085] Diagenetic simulation is performed based on the reference initial water information. The physical property parameters of the rock obtained from the diagenetic simulation results are compared with the physical property parameters of the rock obtained from the existing detection of the target reservoir to determine whether the mineral transformation information and porosity change information in the diagenetic simulation results are consistent with the current results of the target reservoir.

[0086] Step G2: If they are consistent, determine the reference initial water information as the target initial water information.

[0087] If the comparison results are consistent, the reference initial water information is used as the target initial water information.

[0088] Step G3: Otherwise, readjust the current reservoir information of the target reservoir, and re-determine the initial parameter information of the early stage of diagenetic evolution of the target reservoir according to the adjusted current reservoir information.

[0089] If the comparison results are inconsistent, it is considered that the current reservoir information of the target reservoir obtained by the detection is incorrect and needs to be re-detected. Based on the current reservoir information obtained by the re-detection, the initial parameter information is determined, and numerical simulation operations and diagenetic simulation are continued until the physical property parameters of the rock obtained in the diagenetic simulation results are consistent with the existing physical property parameters of the rock obtained by detecting the target reservoir.

[0090] The technical solution of this embodiment, in the absence of initial water data, determines the initial water information by using forward simulation and inversion simulation to improve the accuracy and effectiveness of diagenetic simulation; inputs the obtained initial water information into the static reaction model for iterative numerical calculation to obtain the numerical simulation operation results, and judges whether the calculated initial water meets the conditions according to the judgment conditions of the initial water and the initial mineral components, and proposes the adjustment scheme of the initial water according to the specific situation, which is conducive to more accurate and effective determination of the initial water composition and content. Perform diagenetic simulation according to the obtained initial water information, compare the simulation results with the detection results, judge whether the calculated initial water information is correct, and adjust the collected data if it is not correct, which is conducive to improving the accuracy of determining the initial water composition and content of the target reservoir in the early stage of diagenesis. This method provides effective technical support for the determination of initial water in reservoir diagenesis simulation, and can more accurately simulate the mineral dissolution, transformation and precipitation reactions in the reservoir diagenesis process, thereby improving the accuracy and scientificity of diagenetic simulation.

[0091] Embodiment 2

[0092] Figure 2 A schematic diagram of the structure of a device for determining initial water in the early stage of reservoir diagenesis evolution provided by the second embodiment of the present invention. Figure 2 As shown, the device comprises:

[0093] Initial parameter information determination module 210: used to determine initial parameter information of the target reservoir at the early stage of diagenetic evolution according to the current reservoir information of the target reservoir;

[0094] Numerical simulation operation module 220: used to establish a static reaction model of initial mineral components and initial water according to the initial parameter information, and perform iterative numerical simulation operation on the static reaction model according to the initial parameter information;

[0095] The reference initial water information determination module 230 is used to determine the reference initial water information according to the numerical simulation calculation result;

[0096] The initial water information determination module 240 is used to perform diagenetic simulation according to the reference initial water information, and determine the target initial water information according to the diagenetic simulation result.

[0097] Optionally, the initial parameter information determining module 210 includes:

[0098] Current reservoir information determination unit: used to determine the current formation water information, geochemical reaction and sedimentary environment in the diagenetic evolution process of the target reservoir as the current reservoir information of the target reservoir;

[0099] Initial parameter information determination unit: used to determine the initial diagenetic environment, diagenetic time, simulated initial mineral components and simulated initial water information of the target reservoir according to the current reservoir information of the target reservoir as the initial parameter information.

[0100] Optionally, the numerical simulation operation module 220 includes:

[0101] Numerical simulation operation unit: used to input the simulated initial mineral composition and simulated initial water information as initial iteration values ​​into the static reaction model based on the initial diagenetic environment and diagenetic time, and perform iterative numerical simulation operation.

[0102] Optionally, the target reservoir includes at least two diagenetic stages, each diagenetic stage corresponds to a different diagenetic environment, and the numerical simulation operation unit includes:

[0103] The intermediate initial water information determination subunit is used to input the simulated initial mineral composition and the simulated initial water information as initial iteration values ​​into the static reaction model based on the initial diagenetic environment and diagenetic time, so as to obtain the intermediate initial water information corresponding to the initial diagenetic environment;

[0104] Numerical simulation operation subunit: used to use the intermediate initial water information as the initial iteration value of the next diagenetic stage, and perform numerical simulation operation of the static reaction model based on the diagenetic environment corresponding to the next diagenetic stage, until the numerical simulation operation of all diagenetic stages is completed.

[0105] Optionally, the reference initial water information determination module 230 includes:

[0106] Balance judgment unit: used to judge whether the initial mineral components and initial water in the static reaction model have reached equilibrium according to the ion concentration, mineral content change value and mineral dissolution and precipitation trend parameters in the numerical simulation calculation results;

[0107] A reference initial water information determination unit: used for taking the current initial water information of the static reaction model as the reference initial water information if equilibrium is reached;

[0108] Initial iteration value adjustment unit: Otherwise, the initial iteration values ​​of the initial mineral components and initial water information in the static reaction model are adjusted, and the iterative numerical simulation operation is re-performed according to the adjusted initial iteration values ​​until the initial mineral components and initial water reach equilibrium.

[0109] Optionally, the balance judgment unit is specifically used for:

[0110] If the change values ​​of ion concentration and mineral content are equal to 0, and the difference between the absolute value of the dissolution and precipitation trend parameter of the mineral and 0 is less than the preset threshold, it is determined that the initial mineral components and initial water have reached equilibrium;

[0111] Accordingly, the initial iteration values ​​of the initial mineral composition and initial water information in the static reaction model are adjusted, including:

[0112] If the change value of the ion concentration and the mineral content is equal to 0, and the difference between the absolute value of the dissolution and precipitation trend parameter of the mineral and 0 is greater than or equal to the preset threshold, the initial water ion concentration of the ions contained in the mineral is adjusted;

[0113] If the change value of the ion concentration and / or mineral content is not equal to 0, the change value of the mineral content is less than the preset change threshold, and the difference between the absolute value of the dissolution and precipitation trend parameter of the mineral and 0 is less than the preset threshold, the current mineral content and ion concentration in the static reaction model results are used as the adjusted initial iteration values.

[0114] Optionally, the initial water information determination module 240 is specifically configured to:

[0115] Conduct diagenetic simulation based on the reference initial water information to determine whether the mineral transformation information and porosity change information in the diagenetic simulation results are consistent with the current results of the target reservoir;

[0116] If they are consistent, the reference initial water information is determined as the target initial water information;

[0117] Otherwise, the current reservoir information of the target reservoir is readjusted, and the initial parameter information of the early stage of diagenetic evolution of the target reservoir is re-determined according to the adjusted current reservoir information.

[0118] The device for determining initial water in the early stage of reservoir diagenesis and evolution provided by the embodiment of the present invention can execute the method for determining initial water in the early stage of reservoir diagenesis and evolution provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0119] The acquisition, storage, use, and processing of data in the technical solution of this application comply with the relevant provisions of national laws and regulations and do not violate public order and good morals.

[0120] Embodiment 3

[0121] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device, a readable storage medium and a computer program product.

[0122] Figure 3 The schematic diagram of the structure of the electronic device of the method for determining the initial water in the early stage of reservoir diagenetic evolution of the embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0123] like Figure 3 As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can 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 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0124] A number of 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, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0125] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the initial water determination method in the early stage of reservoir diagenesis evolution.

[0126] In some embodiments, the method for determining initial water in the early stage of reservoir diagenetic evolution can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the method for determining initial water in the early stage of reservoir diagenetic evolution described above can be executed. Alternatively, in other embodiments, the processor 11 can be configured to execute the method for determining initial water in the early stage of reservoir diagenetic evolution in any other appropriate manner (for example, by means of firmware).

[0127] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific reference products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0128] Computer programs for implementing the 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, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0129] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, 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 disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0130] To provide interaction with a user, the systems and techniques described herein may 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 the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the 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, voice input, or tactile input).

[0131] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0132] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0133] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0134] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining initial water in the early stage of reservoir diagenesis evolution, characterized in that: The method includes: Determining initial parameter information of the target reservoir at an early stage of diagenetic evolution according to current reservoir information of the target reservoir; Establishing a static reaction model of initial mineral components and initial water according to the initial parameter information, and performing iterative numerical simulation calculations on the static reaction model according to the initial parameter information; Determine reference initial water information according to numerical simulation results; A diagenetic simulation is performed according to the reference initial water information, and target initial water information is determined according to the diagenetic simulation result.

2. The method according to claim 1, characterized in that: Determining initial parameter information of the target reservoir at the early stage of diagenetic evolution according to the current reservoir information of the target reservoir includes: Determine the current formation water information, geochemical reaction and sedimentary environment of the target reservoir during diagenetic evolution as the current reservoir information of the target reservoir; The initial diagenetic environment, diagenetic time, simulated initial mineral components and simulated initial water information of the target reservoir are determined according to the current reservoir information of the target reservoir as initial parameter information.

3. The method according to claim 2, characterized in that Performing iterative numerical simulation calculations on the static reaction model according to the initial parameter information includes: Based on the initial diagenetic environment and diagenetic time, the simulated initial mineral components and simulated initial water information are input into the static reaction model as initial iteration values ​​to perform iterative numerical simulation operations.

4. The method according to claim 3, characterized in that The target reservoir includes at least two diagenetic stages, each diagenetic stage corresponds to a different diagenetic environment; Accordingly, based on the initial diagenetic environment and diagenetic time, the simulated initial mineral composition and the simulated initial water information are input into the static reaction model as initial iteration values ​​to perform iterative numerical simulation operations, including: Based on the initial diagenetic environment and diagenetic time, the simulated initial mineral composition and the simulated initial water information are input into the static reaction model as initial iteration values ​​to obtain intermediate initial water information corresponding to the initial diagenetic environment; The intermediate initial water information is used as the initial iteration value of the next diagenetic stage, and the numerical simulation operation of the static reaction model is performed based on the diagenetic environment corresponding to the next diagenetic stage, until the numerical simulation operation of all diagenetic stages is completed.

5. The method according to claim 3, characterized in that: The reference initial water information is determined based on the numerical simulation results, including: According to the ion concentration, mineral content change value and mineral dissolution and precipitation trend parameters in the numerical simulation results, it is judged whether the initial mineral components and initial water in the static reaction model have reached equilibrium; If equilibrium is reached, the current initial water information of the static reaction model is used as the reference initial water information; Otherwise, the initial iteration values ​​of the initial mineral components and initial water information in the static reaction model are adjusted, and the iterative numerical simulation operation is re-performed according to the adjusted initial iteration values ​​until the initial mineral components and initial water reach equilibrium.

6. The method according to claim 5, characterized in that According to the ion concentration, mineral content change value and mineral dissolution and precipitation trend parameters in the numerical simulation results, it is judged whether the initial mineral components and initial water in the static reaction model have reached equilibrium, including: If the change values ​​of the ion concentration and the mineral content are equal to 0, and the difference between the absolute value of the dissolution and precipitation trend parameter of the mineral and 0 is less than a preset threshold, it is determined that the initial mineral component and the initial water are in equilibrium; Accordingly, the initial iteration values ​​of the initial mineral composition and initial water information in the static reaction model are adjusted, including: If the ion concentration and mineral content change value are equal to 0, and the difference between the absolute value of the dissolution and precipitation trend parameter of the mineral and 0 is greater than or equal to a preset threshold, the initial water ion concentration of the ions contained in the mineral is adjusted; If the change value of the ion concentration and / or mineral content is not equal to 0, the change value of the mineral content is less than the preset change threshold, and the difference between the absolute value of the dissolution and precipitation trend parameter of the mineral and 0 is less than the preset threshold, then the current mineral content and ion concentration in the static reaction model results are used as the adjusted initial iteration values.

7. The method according to claim 1, characterized in that Performing diagenetic simulation according to the reference initial water information, and determining target initial water information according to the diagenetic simulation result, including: Performing diagenetic simulation according to the reference initial water information, and determining whether the mineral transformation information and porosity change information in the diagenetic simulation result are consistent with the current result of the target reservoir; If they are consistent, determining the reference initial water information as the target initial water information; Otherwise, the current reservoir information of the target reservoir is readjusted, and the initial parameter information of the early stage of diagenetic evolution of the target reservoir is re-determined according to the adjusted current reservoir information.

8. A device for determining initial water in the early stage of reservoir diagenesis evolution, characterized in that: include: An initial parameter information determination module is used to determine the initial parameter information of the target reservoir at the initial stage of diagenetic evolution according to the current reservoir information of the target reservoir; Numerical simulation operation module: used for establishing a static reaction model of initial mineral components and initial water according to the initial parameter information, and performing iterative numerical simulation operation on the static reaction model according to the initial parameter information; Reference initial water information determination module: used to determine reference initial water information according to numerical simulation calculation results; The initial water information determination module is used to perform diagenetic simulation according to the reference initial water information, and determine the target initial water information according to the diagenetic simulation result.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively coupled to the at least one processor; Wherein, the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for determining initial water in the early stage of reservoir diagenetic evolution as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for determining initial water in the early stage of reservoir diagenetic evolution according to any one of claims 1 to 7 when executed.

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