Carbon dioxide well reservoir pressure and temperature conversion method and device

Abstract

The invention provides a carbon dioxide well reservoir pressure and temperature conversion method and device, and relates to the field of carbon dioxide sequestration, and the method comprises the steps: obtaining well depth data, pressure data and temperature data of an actual measurement point at a measurement depth under a target shaft; processing the pressure data of the actual measurement point, the well depth data and the target depth to obtain initial pressure data of a target layer corresponding to the target depth; processing the temperature data of the actual measurement point, the well depth data and the target depth to obtain initial temperature data of a target layer corresponding to the target depth; and if verification of the initial pressure data and the initial temperature data is passed, determining the initial pressure data and the initial temperature data as target pressure data and target temperature data. The engineering risk can be remarkably reduced, and the carbon sequestration efficiency and safety are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of carbon dioxide storage, in particular, to a method and device for converting carbon dioxide well reservoir pressure and temperature. BACKGROUND

[0002] In the development process of CCUS (carbon capture, utilization and storage) technology, accurately grasping the reservoir pressure and temperature is crucial to ensure the safe and efficient operation of the system. Currently, there are many challenges in obtaining reservoir pressure and temperature data of CCUS wells. On the one hand, during actual measurement, due to the installation location and technical limitations of the measurement equipment, it is difficult to directly obtain the pressure and temperature data of the target layer; on the other hand, there is a deviation between the existing measurement data and the target layer data, and if used directly, it will lead to misjudgment of the reservoir state, affecting the design, construction and operation decision of the CCUS project.

[0003] Traditional pressure and temperature conversion methods often lack systematicness and accuracy, and cannot fully consider the properties of wellbore fluids and the differences between different depths. For example, for different fluids such as water, liquid carbon dioxide, supercritical carbon dioxide and their mixtures, there is a lack of unified and accurate algorithm for calculating the static pressure generated in the wellbore; the temperature conversion is not effectively corrected in combination with the actual well depth data. This makes the reservoir pressure and temperature data obtained by traditional methods unable to provide reliable support for CCUS projects, and difficult to ensure the safety of the wellbore and the effect of carbon storage. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a method and device for converting carbon dioxide well reservoir pressure and temperature, which can accurately convert reservoir temperature and pressure data and ensure the safety and efficiency of the CCUS project.

[0005] In a first aspect, a method for converting carbon dioxide well reservoir pressure and temperature is provided, which can include: obtaining well depth data, pressure data and temperature data of a measured point at a measured depth of a target wellbore; processing the pressure data, well depth data and target depth of the measured point to obtain initial pressure data of the target layer corresponding to the target depth; processing the temperature data, well depth data and target depth of the measured point to obtain initial temperature data of the target layer corresponding to the target depth; verifying the initial pressure data and the initial temperature data, and if the verification is passed, determining the initial pressure data and the initial temperature data as target pressure data and target temperature data.

[0006] In a possible implementation, the pressure data, the depth data of the measured point and the target depth are processed, and the initial pressure data of the target layer corresponding to the target depth comprises the following steps: determining the static pressure generated by the wellbore fluid column between the measured depth and the target depth; superimposing the static pressure on the pressure data corresponding to the measured depth to obtain the initial pressure data of the target layer corresponding to the target depth.

[0007] In a possible implementation, the static pressure generated by the wellbore fluid column between the measured depth and the target depth is determined, comprising the following steps: using a configured static pressure algorithm to calculate the measured depth, the target depth and the average density of the wellbore fluid to obtain the static pressure.

[0008] In a possible implementation, the static pressure algorithm is:

[0009] wherein, △P is the static pressure, ρ is the average density of the wellbore fluid, g is the acceleration of gravity, and ΔH is the vertical depth difference between the measured depth and the target depth.

[0010] In a possible implementation, the wellbore fluid is water, liquid carbon dioxide or supercritical carbon dioxide.

[0011] In a possible implementation, the initial pressure data is verified, comprising the following steps: comparing the initial pressure data with the known formation pressure data of the target layer, and if the difference is within a preset allowable range, the verification is passed.

[0012] In a possible implementation, the initial pressure data and the initial temperature data are verified, comprising the following steps: based on the initial pressure data and the initial temperature data, calculating the wellbore pressure profile, and checking whether the profile is within the wellbore pressure safety range, and if so, the verification is passed.

[0013] In a second aspect, a device for converting carbon dioxide well reservoir pressure and temperature is provided, which can comprise: an acquisition unit configured to acquire the depth data, the pressure data and the temperature data of a measured point at a measured depth of a target wellbore; a processing unit configured to process the pressure data, the depth data of the measured point and the target depth to obtain the initial pressure data of the target layer corresponding to the target depth; and process the temperature data, the depth data of the measured point and the target depth to obtain the initial temperature data of the target layer corresponding to the target depth; The verification unit is configured to verify the initial pressure data and the initial temperature data, and if the verification is passed, the initial pressure data and the initial temperature data are determined as target pressure data and target temperature data.

[0014] In a third aspect, an electronic device is provided, which includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete mutual communication through the communication bus. The memory is configured to store a computer program. The processor is configured to execute the program stored on the memory to implement the method steps of any one of the first aspect.

[0015] In a fourth aspect, a computer readable storage medium is provided, which stores a computer program, and the computer program is executed by a processor to implement the method steps of any one of the first aspect.

[0016] The application provides a method and device for converting carbon dioxide well reservoir pressure and temperature, which comprises the following steps: obtaining well depth data, pressure data and temperature data of a measured point at a target wellbore lower measuring depth; processing the pressure data, well depth data and target depth of the measured point to obtain initial pressure data of a target layer corresponding to the target depth; processing the temperature data, well depth data and target depth of the measured point to obtain initial temperature data of the target layer corresponding to the target depth; verifying the initial pressure data and the initial temperature data, and if the verification is passed, the initial pressure data and the initial temperature data are determined as target pressure data and target temperature data. The application forms a complete technical chain from data collection to result determination. First, the well depth, pressure and temperature data at the measuring depth are obtained, and the static pressure algorithm is taken as the core to accurately calculate the initial pressure of the target layer by superimposing the static pressure of the fluid column between the measuring depth and the target depth, and the temperature data processing is completed synchronously. In the verification link, the initial pressure data is compared with the known formation pressure, and the pressure profile is calculated by combining the initial pressure and temperature data to check whether it is within the wellbore pressure safety range. Through multi-dimensional verification, the data error is controlled in a very small range, compared with the traditional method, the problem of large data deviation and single verification is effectively avoided, accurate and reliable reservoir parameters are provided for CCUS engineering design and operation, the engineering risk is significantly reduced, and the carbon sequestration efficiency and safety are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments of the application. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. Other related drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 A system architecture diagram for a method of converting pressure and temperature in carbon dioxide well reservoirs, provided for embodiments of this application; Figure 2 A flowchart illustrating a method for converting reservoir pressure and temperature in a carbon dioxide well, provided as an embodiment of this application; Figure 3 A schematic diagram of a device for converting pressure and temperature in a carbon dioxide well reservoir, provided for an embodiment of this application; Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] The method for converting carbon dioxide well reservoir pressure and temperature provided in this application embodiment can be applied to... Figure 1 In the system architecture shown, such as Figure 1 As shown, the system may include a server and a terminal. The server can be a physical server, a server cluster consisting of multiple physical servers, or a distributed system. It can also be a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks (CDNs), and big data and artificial intelligence platforms. The terminal and server can be connected directly or indirectly through wired or wireless communication methods; this application does not impose any limitations on this.

[0021] The terminal is used to acquire well depth data, pressure data, and temperature data at the measured point at the target wellbore depth, and to send the well depth data, pressure data, and temperature data at the measured point at the target wellbore depth to the server; The server is used to acquire well depth data, pressure data, and temperature data at the measured depth of the target wellbore, in order to execute the conversion method for carbon dioxide well reservoir pressure and temperature provided in this application.

[0022] In the development process of CCUS (carbon capture, utilization and storage) technology, accurately grasping the reservoir pressure and temperature is crucial to ensure the safe and efficient operation of the system. Currently, there are many challenges in obtaining reservoir pressure and temperature data of CCUS wells. On the one hand, during actual measurement, due to the installation location and technical limitations of the measurement equipment, it is difficult to directly obtain the pressure and temperature data of the target layer. On the other hand, the existing measurement data deviates from the target layer data, and if used directly, it will lead to misjudgment of the reservoir state and affect the design, construction and operation decision of CCUS engineering.

[0023] Traditional pressure and temperature conversion methods often lack systematicness and accuracy, and cannot fully consider the properties of wellbore fluids and the differences between different depths. For example, for different fluids such as water, liquid carbon dioxide, supercritical carbon dioxide and their mixtures, there is no unified and accurate algorithm for calculating the static pressure generated in the wellbore. Temperature conversion is also not effectively corrected with actual well depth data. This makes the reservoir pressure and temperature data obtained by traditional methods unable to provide reliable support for CCUS engineering, and difficult to ensure wellbore safety and carbon storage effect.

[0024] Therefore, the present application provides a method for converting carbon dioxide well reservoir pressure and temperature, which solves the above problems existing in the prior art, and can accurately convert reservoir temperature and pressure data to ensure the safe and efficient operation of CCUS engineering.

[0025] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application, and the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0026] Figure 2 A flowchart of a method for converting carbon dioxide well reservoir pressure and temperature provided by an embodiment of the present application is shown. As shown in Figure 2 The method can include: Step S210, obtaining well depth data, pressure data and temperature data of a measured point at a measured depth of a target wellbore.

[0027] Specifically, the well depth data is measured with the wellhead as the reference point, and a depth measuring device is used to measure the vertical distance from the wellhead to the measured point at the measured depth along the wellbore; the pressure data is measured by an electronic pressure gauge, which is equipped with a high-precision pressure sensor that can accurately sense the pressure generated by the fluid in the wellbore; the temperature data is obtained by a thermometer, which can use thermocouples, resistance thermometers, etc., and can quickly respond to temperature changes in the wellbore and accurately measure. During the measurement process, the installation position of the measuring instrument needs to be ensured to be accurate, and the range, accuracy and other parameters of the measuring instrument meet the measurement requirements of the carbon dioxide well reservoir, so as to obtain reliable and accurate well depth data, pressure data and temperature data, and provide basic data support for the subsequent conversion of reservoir pressure and temperature at the target depth.

[0028] Step S220, processing the pressure data, well depth data and target depth of the measured point to obtain the initial pressure data of the target layer corresponding to the target depth.

[0029] Specifically, step S221, determining the static pressure generated by the fluid column in the wellbore between the measured depth and the target depth; Further, using the configured static pressure algorithm, the measured depth, the target depth and the average density of the wellbore fluid are calculated to obtain the static pressure.

[0030] The static pressure algorithm is:

[0031] Wherein, △P is the static pressure, p is the average density of the wellbore fluid, g is the acceleration of gravity, and ΔH is the vertical depth difference between the measured depth and the target depth.

[0032] Wherein, the wellbore fluid is water, liquid carbon dioxide, supercritical carbon dioxide or a mixture of at least two of the fluids. For different fluids or mixed fluids, their average density can be obtained through laboratory measurement, engineering empirical formula or real-time monitoring to ensure the accuracy of the calculation.

[0033] Step S222, superimposing the static pressure on the pressure data corresponding to the measured depth to obtain the initial pressure data of the target layer corresponding to the target depth.

[0034] It can also be understood that the static pressure calculated above is superimposed on the pressure data corresponding to the measured depth. Specifically, based on the measured pressure data at the measured depth received by the ground control system, the static pressure calculated in step S221 is combined to perform numerical superposition operation, so as to obtain the initial pressure data of the target layer corresponding to the target depth. During this process, the data is recorded, stored and analyzed in real time to ensure that the calculation process of the initial pressure data is traceable and the result is accurate and reliable, which provides effective data support for the subsequent verification of reservoir pressure and temperature and engineering decision-making.

[0035] Step S230, verifying the initial pressure data and the initial temperature data to obtain a verification result.

[0036] Specifically, the initial pressure data is compared with known formation pressure data of the target layer, and if the difference is within a preset allowable range, the verification is passed. This mode can be understood as comparing the calculated initial pressure data with the known formation pressure data of the target layer. The corresponding system is configured with a dynamically updated formation pressure database, which integrates historical logging data, adjacent well pressure data and geomechanical model calculation results. In the comparison process, a dynamic threshold adaptive algorithm is used to automatically adjust the preset allowable difference range according to factors such as the geological structure complexity of the target layer and the fluid properties. For example, for a simple and homogeneous formation, the difference allowable range is set to ±5%; and for a complex fault zone, the threshold is dynamically adjusted to ±8%. If the difference between the initial pressure data and the historical data is within the corresponding threshold range, it is determined that the pressure data verification is passed.

[0037] And / or, based on the initial pressure data and the initial temperature data, the wellbore pressure profile is calculated, and it is checked whether the profile is within the wellbore pressure safety range, and if so, the verification is passed.

[0038] Based on the initial pressure data and the initial temperature data, combined with wellbore structure parameters (pipe diameter, wall thickness), fluid flow characteristics (flow rate, flow state), the wellbore pressure profile is calculated through a finite element fluid and structure coupling model. The model uses high-precision meshing technology to perform mesh densification on key parts such as the wellhead and the perforated section to ensure calculation accuracy. In the checking process, the pressure profile result is compared with a wellbore pressure safety threshold matrix, which takes into account factors such as pipe yield strength, corrosion allowance and safety factor to set hierarchical pressure safety limits. For example, for an N80 steel casing, the upper limit of the safety pressure at a well depth of 2000m is 35MPa. If all data points of the calculated pressure profile are below the corresponding safety limit, it is determined that the pressure data verification is passed.

[0039] In one embodiment, regional geothermal gradient data (obtained through geothermal flow measurement and geothermal field simulation) are used to establish a target layer theoretical temperature model. The initial temperature data is substituted into the model for calculation, and if the actual temperature variation trend deviates from the theoretical geothermal gradient curve by less than ±3℃, the temperature data is preliminarily verified to be reasonable. For example, when the regional geothermal gradient is 3℃ / 100m, if the calculated temperature at 2000m deviates from the theoretical value (wellhead temperature + 60℃) by no more than 3℃, the verification in this dimension is passed.

[0040] In another embodiment, based on the wellbore heat transfer theory, a three-dimensional unsteady heat conduction model is constructed, which includes fluid convection, wellbore wall heat conduction and formation heat diffusion. The model inputs initial temperature data, fluid specific heat capacity, wellbore insulation layer parameters, etc., and simulates the temperature distribution at different time scales. The model calculation results are compared with the real-time monitoring data of the distributed optical fiber temperature measurement system (DOFT), and the root mean square error (RMSE) evaluation algorithm is used. When the RMSE value is less than 2℃, it is determined that the temperature data is verified.

[0041] If the verification is passed, the initial pressure data and the initial temperature data are determined as the target pressure data and the target temperature data. If the above pressure data and temperature data pass any dimensional verification (or meet multiple verification conditions at the same time), the initial pressure data and the initial temperature data are automatically marked as the target pressure data and the target temperature data. The confirmed data is stored by blockchain storage technology encryption, generating an unalterable digital fingerprint. At the same time, the system generates a detailed verification report, recording the original data, calculation process, verification method and comparison results, providing authoritative data support for subsequent CCUS engineering design (such as injection volume optimization, wellbore integrity evaluation).

[0042] In summary, all the above steps significantly improve the accuracy and reliability of the data through a systematic process. First, accurately collect multi-dimensional data at the measurement point to provide a reliable basis for subsequent calculations; then, based on fluid mechanics and formation characteristics, process the data specifically to obtain the initial temperature and pressure data of the target layer; finally, use the multi-physical field coupling verification mechanism to evaluate the data reliability from multiple dimensions such as formation deformation and permeability change. The data verified by strict verification is determined as the target data, effectively avoiding the problem of large data deviation in traditional methods, providing key support for CCUS engineering design and operation, reducing engineering risks, and improving carbon sequestration efficiency and safety.

[0043] The application provides a method for converting carbon dioxide well reservoir pressure and temperature, which comprises the following steps: obtaining well depth data, pressure data and temperature data of a measured point at a measured depth under a target wellbore; processing the pressure data, well depth data and target depth of the measured point to obtain initial pressure data of a target layer corresponding to the target depth; processing the temperature data, well depth data and target depth of the measured point to obtain initial temperature data of the target layer corresponding to the target depth; and verifying the initial pressure data and the initial temperature data, and determining the initial pressure data and the initial temperature data as target pressure data and target temperature data if the verification is passed. The application forms a complete technical chain from data collection to result determination. The well depth, pressure and temperature data at the measured depth are obtained first, and the initial pressure of the target layer is accurately calculated by superimposing the static pressure of the fluid column between the measured depth and the target depth with the static pressure algorithm as the core, and the temperature data processing is completed synchronously. In the verification link, the initial pressure data is compared with the known formation pressure, and the pressure profile is calculated by combining the initial pressure and temperature data to check whether it is within the safe pressure bearing range of the wellbore. Through multi-dimensional verification, the data error is ensured to be controlled in a very small range, compared with the traditional method, the problem of large data deviation and single verification is effectively avoided, accurate and reliable reservoir parameters are provided for CCUS engineering design and operation, the engineering risk is significantly reduced, and the carbon sequestration efficiency and safety are improved.

[0044] Corresponding to the above method, the application also provides a carbon dioxide well reservoir pressure and temperature conversion device, as shown in Figure 3 The carbon dioxide well reservoir pressure and temperature conversion device comprises: An acquisition unit 310 is configured to acquire well depth data, pressure data and temperature data of a measured point at a measured depth under a target wellbore. A processing unit 320 is configured to process the pressure data, well depth data and target depth of the measured point to obtain initial pressure data of a target layer corresponding to the target depth. In addition, the processing unit 320 is configured to process the temperature data, well depth data and target depth of the measured point to obtain initial temperature data of the target layer corresponding to the target depth. A verification unit 330 is configured to verify the initial pressure data and the initial temperature data, and determine the initial pressure data and the initial temperature data as target pressure data and target temperature data if the verification is passed.

[0045] The functions of each functional unit of the carbon dioxide well reservoir pressure and temperature conversion device provided in the above embodiments of the application can be realized through the above method steps, and therefore, the specific working process and beneficial effects of each unit in the carbon dioxide well reservoir pressure and temperature conversion device provided in the embodiments of the application will not be described here.

[0046] The embodiment of the present application further provides an electronic device, such as Figure 4 As shown in the figure, the electronic device comprises a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 complete mutual communication through the communication bus 440.

[0047] The memory 430 is used for storing a computer program. The processor 410 is used for executing the program stored in the memory 430, and the following steps are realized. obtaining well depth data, pressure data and temperature data of a measured point at a target wellbore lower measuring depth; processing the pressure data, the well depth data and the target depth of the measured point to obtain initial pressure data of a target layer corresponding to the target depth; processing the temperature data, the well depth data and the target depth of the measured point to obtain initial temperature data of the target layer corresponding to the target depth; verifying the initial pressure data and the initial temperature data, and if the verification is passed, determining the initial pressure data and the initial temperature data as target pressure data and target temperature data.

[0048] The communication bus mentioned above can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or only one type of bus.

[0049] The communication interface is used for communication between the electronic device and other devices.

[0050] The memory can comprise a Random Access Memory (RAM) and can also comprise a Non-Volatile Memory (NVM), for example at least one disk memory. Optionally, the memory can also be at least one storage device located away from the aforementioned processor.

[0051] The processor described above can be a general processor, including a central processing unit (CPU), a network processor (NP), etc.; can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component.

[0052] The implementation manners and beneficial effects of the electronic device in the above embodiments can be achieved by referring to the implementation manners of each step in the above embodiments, and thus, the specific working process and beneficial effects of the electronic device provided by the embodiments of the present application are not repeated here. Figure 2 The implementation manners and beneficial effects of the electronic device in the above embodiments can be achieved by referring to the implementation manners of each step in the above embodiments, and thus, the specific working process and beneficial effects of the electronic device provided by the embodiments of the present application are not repeated here.

[0053] In another embodiment provided by the present application, a computer readable storage medium is provided, and the computer readable storage medium stores instructions, when the instructions are run on a computer, the computer executes the carbon dioxide well reservoir pressure and temperature conversion method in any one of the above embodiments.

[0054] In another embodiment provided by the present application, a computer program product containing instructions is provided, when the instructions are run on a computer, the computer executes the carbon dioxide well reservoir pressure and temperature conversion method in any one of the above embodiments.

[0055] Those skilled in the art should understand that the embodiments in the embodiments of the present application can be provided as a method, a system or a computer program product. Therefore, the embodiments in the present application can be in the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware aspects. Moreover, the embodiments in the present application can be in the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program codes.

[0056] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks. Figure 1 one or more flow or blocks.

[0057] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. Figure 1 one or more flow or blocks. Figure 1 one or more flow or blocks.

[0058] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks. Figure 1 one or more flow or blocks.

[0059] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The words "first", "second", and similar words of degree express quantity or importance, but do not imply any order, quantity, or importance. The words "include", "contain", and similar words mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, and do not exclude other elements or objects. The words "connect", "couple", or "connect" do not mean physical or mechanical connection, but can include electrical connection, whether direct or indirect. The words "up", "down", "left", "right", and the like only express relative positional relationships, which may

[0060] While the preferred embodiments in the application have been described, additional modifications and changes can occur to those skilled in the art once they learn of the basic creative principles contained herein. Therefore, the present embodiments are to be regarded as including all modifications and variations that fall within the scope of the present embodiments.

[0061] Obviously, numerous modifications and variations of the embodiments in the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the embodiments in the present application, the embodiments can be practiced otherwise than as specifically described.

Claims

1. A method for converting carbon dioxide well reservoir pressure and temperature, characterized by, The method comprises: obtaining well depth data, pressure data and temperature data of a measured point at a measured depth under a target wellbore; processing the pressure data, well depth data and target depth of the measured point to obtain initial pressure data of a target layer corresponding to the target depth; processing the temperature data, well depth data and target depth of the measured point to obtain initial temperature data of the target layer corresponding to the target depth; verifying the initial pressure data and the initial temperature data, and if the verification is passed, determining the initial pressure data and the initial temperature data as target pressure data and target temperature data.

2. The method of claim 1, wherein, Processing the pressure data, well depth data and target depth of the measured point, the initial pressure data of the target layer corresponding to the target depth comprises: determining the static pressure generated by the fluid column of the wellbore between the measured depth and the target depth; superimposing the static pressure on the pressure data corresponding to the measured depth to obtain the initial pressure data of the target layer corresponding to the target depth.

3. The method of claim 2, wherein, Determining the static pressure generated by the fluid column of the wellbore between the measured depth and the target depth comprises: using a configured static pressure algorithm to calculate the measured depth, target depth and average density of the wellbore fluid to obtain the static pressure.

4. The method of claim 3, wherein, The static pressure algorithm is: wherein ΔP is the static pressure, ρ is the average density of the wellbore fluid, g is the acceleration of gravity, and ΔH is the vertical depth difference between the measured depth and the target depth.

5. The method of claim 4, wherein, The wellbore fluid is water, liquid carbon dioxide or supercritical carbon dioxide.

6. The method of claim 1, wherein, Verifying the initial pressure data comprises: comparing the initial pressure data with known formation pressure data of the target layer, and if the difference is within a preset allowable range, the verification is passed.

7. The method of claim 6, wherein, Verifying the initial pressure data and the initial temperature data comprises: based on the initial pressure data and the initial temperature data, calculating a wellbore pressure profile, and checking whether the profile is within a wellbore pressure safety range, and if so, the verification is passed.

8. A device for converting carbon dioxide well reservoir pressure and temperature, characterized by, The device comprises: an acquisition unit configured to acquire well depth data, pressure data and temperature data of a measured point at a measured depth under a target wellbore; a processing unit configured to process the pressure data, well depth data and target depth of the measured point to obtain initial pressure data of a target layer corresponding to the target depth; and process the temperature data, well depth data and target depth of the measured point to obtain initial temperature data of the target layer corresponding to the target depth; a verification unit configured to verify the initial pressure data and the initial temperature data, and if the verification is passed, determine the initial pressure data and the initial temperature data as target pressure data and target temperature data.

9. An electronic device, comprising: The electronic device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete mutual communication through the communication bus; the memory is used to store a computer program; the processor is used to execute the program stored on the memory to implement the method steps of any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the method steps in any one of claims 1-7.

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