An oil-gas total amount recovery method and device, electronic equipment and storage medium

Abstract

The application discloses an oil and gas content recovery method and device, electronic equipment and storage medium. The method comprises the following steps: determining a first time of a first drilling; determining a first relationship; determining an oil and gas content of a corresponding formation of the first drilling at a second time according to the first time and the first relationship. The technical scheme of the application determines the first time of the first drilling, determines the first relationship, and determines the oil and gas content of the corresponding formation of the first drilling at the second time according to the first time and the first relationship, so as to determine the oil and gas content of the formation cuttings of the first drilling at the first time, and further determine the actual situation of the first drilling, thereby providing data support for drilling exploitation and selection of exploitation methods.

Description

Technical Field

[0001] This invention relates to the field of petroleum exploration technology, and in particular to a method, apparatus, electronic device, and storage medium for restoring total oil and gas content. Background Technology

[0002] In the study of remaining oil, the evaluation of the potential of old wells is crucial. The evaluation of the potential of old wells mainly involves analyzing data such as the original reservoir reserves, regional production, and water injection status of adjacent wells to clarify the distribution of remaining oil in the study area and determine the remaining resource potential of old wells.

[0003] The total oil and gas content obtained from geochemical logging is an important parameter for evaluating the original reserves of a reservoir. However, due to the lack of geochemical logging data in many old wells and the influence of factors such as crude oil volatilization, the total oil and gas content obtained from re-analyzing the cuttings of old wells through geochemical logging cannot represent the original oil content of the formation, and cannot quantitatively calculate the original reserves of the reservoir, thus affecting the accuracy of the potential evaluation of old wells. Summary of the Invention

[0004] This invention provides a method, apparatus, electronic device, and storage medium for recovering total oil and gas content, in order to solve the problem that geochemical logging analysis of cuttings from old wells cannot quantitatively calculate the original reservoir reserves, thus affecting the accuracy of old well potential evaluation.

[0005] According to one aspect of the present invention, a method for restoring total oil and gas content is provided, the method comprising:

[0006] Determine the first moment of the first drilling operation; the first moment is the moment when the formation cuttings from the first drilling operation are obtained.

[0007] Determine the first relation; the first relation is used to describe the change in the total oil and gas content of the formation cuttings at different times in the first drilling formation.

[0008] Based on the first moment and the first relationship, determine the total amount of oil and gas in the formation corresponding to the first well at the second moment.

[0009] According to another aspect of the present invention, an oil and gas total content recovery device is provided, the device comprising:

[0010] The target parameter determination module is used to determine the first moment of the first drilling, which is the moment when the formation cuttings of the first drilling are obtained.

[0011] The first relation determination module is used to determine the first relation; the first relation is used to describe the change in the total amount of oil and gas in the formation of the first drilling formation cuttings at different times.

[0012] The total oil and gas volume determination module is used to determine the total oil and gas volume of the formation corresponding to the first well at the second time based on the first time point and the first relationship.

[0013] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0014] At least one processor; and

[0015] A memory that is communicatively connected to at least one processor; wherein,

[0016] The memory stores a computer program that can be executed by at least one processor, such that the at least one processor is able to perform the oil and gas recovery method according to any embodiment of the present invention.

[0017] According to another aspect of the present invention, a computer-readable storage medium is provided, which stores computer instructions for causing a processor to execute and implement the method for restoring the total oil and gas content of any embodiment of the present invention.

[0018] The technical solution of this invention involves determining a first moment in the first drilling operation; determining a first relationship; and, based on the first moment and the first relationship, determining the total amount of oil and gas in the formation corresponding to the first drilling operation at a second moment. This allows for the determination of the total amount of oil and gas in the formation at the first moment when the formation cuttings of the first drilling operation are present, thereby determining the actual situation of the first drilling operation and providing data support for the selection of drilling and mining methods.

[0019] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A flowchart of a method for restoring total oil and gas content is provided in Embodiment 1 of the present invention;

[0022] Figure 2 A flowchart of an example of a method for restoring total oil and gas content is provided in Embodiment 2 of the present invention;

[0023] Figure 3 This is a schematic diagram of a total oil and gas recovery device according to Embodiment 3 of the present invention;

[0024] Figure 4This is a schematic diagram of the structure of an electronic device for implementing the method for restoring total oil and gas content according to an embodiment of the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] Example 1

[0028] Figure 1 This invention provides a flowchart of a method for restoring the total oil and gas content in an embodiment of the present invention. This embodiment is applicable to situations where the total oil and gas content of old wells is determined. This method can be executed by an oil and gas content restoration device, which can be implemented in hardware and / or software and can be configured in an electronic device with data processing capabilities. Figure 1 As shown, the method includes:

[0029] S110, Determine the first moment of the first drilling.

[0030] The first moment refers to the moment when the first drilling formation cuttings are obtained.

[0031] For previously mined wells, the decision to re-exploit them and the selection of re-exploitation methods are closely related to the current total oil and gas content of the formation. The total oil and gas content in an old well is often determined by analyzing the oil and gas content in the cuttings. However, due to the volatility of crude oil, the crude oil content in oil-bearing cuttings varies at different times; the longer the cuttings are stored, the lower the residual crude oil content. This means that directly determining the total oil and gas content from cuttings can lead to significant deviations in the results, thus affecting the decision to re-exploit the well and the choice of extraction methods, ultimately impacting oil and gas production.

[0032] To ensure the accuracy of the results, this application proposes a method for recovering the total amount of oil and gas, which is used to determine the time of obtaining the cuttings from the first drilling formation.

[0033] S120, Determine the first relation.

[0034] The first relation is used to describe the change in the total amount of oil and gas in the formation of the first drilling cuttings at different times.

[0035] The primary relationship can be determined by observing the change in the total formation oil and gas content of the formation cuttings from the sample well over time. This primary relationship can be represented by functions or point plots.

[0036] To ensure the accuracy of the first relationship, it is necessary to first plot the total formation oil and gas content of the formation cuttings from the sample well and the corresponding time on the same coordinate graph, and then generate the first relationship based on the curve relationship between the total formation oil and gas content and the corresponding time.

[0037] In one alternative approach, determining the first relationship may include steps A1-A3:

[0038] Step A1: Determine the second relationship of the rock cuttings corresponding to the first drilling well.

[0039] The second relationship is the correspondence between the total amount of oil and gas in the formation cuttings of the corresponding formation in the sample well and the change over time.

[0040] Step A2: Determine the first function based on the second relation.

[0041] The first function is a function corresponding to time and the total amount of oil and gas in the formation. The degree to which the first function satisfies the second relationship is greater than the preset degree.

[0042] Step A3: Determine the first relationship based on the first function.

[0043] When determining the first relationship, we can first plot the curve of the total amount of formation oil and gas in the sample drilling cuttings over time, so as to obtain the second relationship of the approximate total amount of formation oil and gas in the cuttings over time. Based on the second relationship, we can determine the first function that satisfies the second relationship to a degree greater than the preset degree, and finally use the first function as the first relationship.

[0044] In one alternative approach, determining the first relationship based on the first function may include steps B1-B3:

[0045] Step B1: Determine the third relationship of the rock cuttings in the formation corresponding to the second well.

[0046] The third relationship is the correspondence between the total amount of oil and gas in the formation cuttings of the second well and the change over time; the distance between the second well and the first well is less than the preset distance.

[0047] Step B2: Adjust the first function according to the third relation to obtain the second function.

[0048] Step B3: Determine the first relationship based on the second function.

[0049] To ensure the accuracy of the first relationship, it can be further adjusted. This can be done by selecting a second well that is less than a preset distance from the first well, and adjusting the first relationship based on the third relationship of the second well. The purpose of selecting a second well that is less than a preset distance from the first well is to minimize the difference between the third relationship of the second well and the first relationship of the first well, thereby further improving the accuracy of the first relationship.

[0050] In addition, in actual use, due to the possibility of data loss, the initial determination of the first relation may have a large error, or it may not be possible to directly establish the first relation. In this case, the third relation can be used as the first relation to generate the second function.

[0051] The expression for the first function is:

[0052] Rp = a × ln(Δt1+1) + 100;

[0053] Where Δt1=t1-t0; Rp is the percentage of the total remaining oil and gas content in the formation cuttings of the first well at time t1; a is an adjustment coefficient, dimensionless; Δt1 is the time difference between the oil-bearing cuttings analysis of the formation cuttings of the first well at time t1 and the cuttings return; t1 is the time when the geochemical logging analysis of the formation cuttings of the first well is performed; t0 is the time when the cuttings of the formation cuttings of the first well return during the drilling process of the first well.

[0054] The formula for calculating the adjustment coefficient in the second function expression is as follows:

[0055] a = (Rp² - 100) / ln(Δt² + 1);

[0056] Where Rp2 = Pg2 / Pg20 × 100; Δt2 = t2 - t20; Rp2 is the percentage of remaining total oil and gas in the second well at time t2, in %; Δt2 is the time difference between the oil cuttings analysis and the cuttings return at time t2 in the second well; Pg2 is the total oil and gas in the formation analyzed by geochemical logging at time t2 in the second well, in mg / g; Pg20 is the original total oil and gas in the formation analyzed by geochemical logging or laboratory analysis when the cuttings return in the second well, in mg / g; t2 is the time of geochemical logging analysis in the second well; t20 is the time of cuttings return during the second drilling process.

[0057] S130. Based on the first moment and the first relationship, determine the total amount of oil and gas in the formation corresponding to the first well at the second moment.

[0058] Once the primary relationship is established, the total amount of oil and gas in the formation corresponding to the first well at the second time can be calculated based on the first time point.

[0059] To estimate the total formation hydrocarbon content corresponding to the first drilling operation at the first moment, it is necessary to determine the specific formula for the estimation:

[0060] Pg10=Pg1 / Rp×100=Pg1 / (a×1n((t1-t0)+1)+100)×100;

[0061] Wherein, Pg10 represents the original total hydrocarbon content of the formation after geochemical logging recovery at the first moment of this well, in mg / g; Pg1 represents the total hydrocarbon content of the formation analyzed by geochemical logging at the first moment of this well, in mg / g.

[0062] According to the technical solution of the present invention, a first moment of drilling is determined; a first relationship is determined; based on the first moment and the first relationship, the total amount of oil and gas in the formation corresponding to the first drilling at a second moment is determined, thereby realizing the determination of the total amount of oil and gas in the formation of the first drilling at the first moment, and thus determining the actual situation of the first drilling, thereby providing data support for drilling and mining and the selection of mining methods.

[0063] Example 2

[0064] This invention provides an example of a method for restoring total oil and gas content. This embodiment can be combined with various optional solutions in one or more of the above embodiments. The specific method for restoring total oil and gas content in this embodiment may include the following steps:

[0065] See Figure 2 Taking well A (the first drilling well) as an example, the parameters of the adjacent well (the second drilling well) were substituted into the formula for calculating the adjustment coefficient 'a', resulting in an adjustment coefficient of -6.3861. Within the 2990m to 3116m well section of well A, geochemical logging analysis of seven samples yielded a maximum original total hydrocarbon content of 13.4422 mg / g, a minimum of 2.9456 mg / g, and an average of 7.3621 mg / g after secondary analysis. The analysis of the original total hydrocarbon content of the formation after cuttings return at the corresponding well depth in the secondary geochemical logging analysis showed a maximum original total hydrocarbon content of 12.2887 mg / g, a minimum of 3.0380 mg / g, and an average of 7.2740 mg / g. Comparing the original total hydrocarbon content calculated by the secondary geochemical logging analysis with the analysis after cuttings return, the positive relative error was a maximum of 9.75% and an average of 8.04%, while the negative error was a minimum of -8.50% and an average of -7.66%. Overall, the error remained within ±10%. The error between the original total oil and gas content of the formation calculated by this patent and the original total oil and gas content of the formation meets the production requirements and the overall trend is consistent. It can provide data support for the evaluation of the original total oil and gas content during the review of old wells.

[0066] Example 3

[0067] Figure 3 This invention provides a structural block diagram of an oil and gas total content recovery device, applicable to situations where the total oil and gas content of old wells is determined. This oil and gas total content recovery device can be implemented in hardware and / or software, and can be configured in an electronic device with data processing capabilities. Figure 3 As shown, the oil and gas total volume recovery device of this embodiment may include: a target parameter determination module 310, a first relationship determination module 320, and an oil and gas total volume determination module 330. Wherein:

[0068] The target parameter determination module 310 is used to determine the first moment of the first drilling, which is the moment when the formation cuttings of the first drilling are obtained.

[0069] The first relation determination module 320 is used to determine the first relation; the first relation is used to describe the change in the total amount of oil and gas in the formation of the first drilling formation cuttings at different times.

[0070] The total oil and gas volume determination module 330 is used to determine the total oil and gas volume of the formation corresponding to the first well at the second time based on the first time point and the first relationship.

[0071] Based on the above embodiments, optionally, the first relationship determination module 320 includes:

[0072] The second relationship determination module is used to determine the second relationship of the formation cuttings corresponding to the first well; the second relationship is the correspondence of the total oil and gas content of the formation in the formation cuttings corresponding to the sample well over time.

[0073] The first function determination module is used to determine the first function based on the second relationship; the first function is a correspondence function between time and total formation hydrocarbon content, and the degree to which the first function satisfies the second relationship is greater than a preset degree;

[0074] The first relation generation module is used to determine the first relation based on the first function.

[0075] Based on the above embodiments, optionally, the first relationship generation module includes:

[0076] Determine the third relationship of the formation cuttings corresponding to the second well; the third relationship is the correspondence of the total oil and gas content of the formation in the formation cuttings corresponding to the second well over time; the distance between the second well and the first well is less than the preset distance;

[0077] Based on the third relation, the first function is adjusted to obtain the second function;

[0078] The first relationship is determined based on the second function.

[0079] Based on the above embodiments, optionally, the first function is the natural logarithm function.

[0080] Based on the above embodiments, optionally, the expression of the first function is:

[0081] Rp = a × ln(Δt1+1) + 100;

[0082] Where Δt1=t1-t0; Rp is the percentage of the total remaining oil and gas content in the formation cuttings of the first well at time t1; a is an adjustment coefficient, dimensionless; Δt1 is the time difference between the oil-bearing cuttings analysis of the formation cuttings of the first well at time t1 and the cuttings return; t1 is the time when the geochemical logging analysis of the formation cuttings of the first well is performed; t0 is the time when the cuttings of the formation cuttings of the first well return during the drilling process of the first well.

[0083] Based on the above embodiments, optionally, the formula for calculating the adjustment coefficient in the second function expression is as follows:

[0084] a = (Rp² - 100) / ln(Δt² + 1);

[0085] Where Rp2 = Pg2 / Pg20 × 100; Δt2 = t2 - t20; Rp2 is the percentage of remaining total oil and gas in the second well at time t2, in %; Δt2 is the time difference between the oil cuttings analysis and the cuttings return at time t2 in the second well; Pg2 is the total oil and gas in the formation analyzed by geochemical logging at time t2 in the second well, in mg / g; Pg20 is the original total oil and gas in the formation analyzed by geochemical logging or laboratory analysis when the cuttings return in the second well, in mg / g; t2 is the time of geochemical logging analysis in the second well; t20 is the time of cuttings return during the second drilling process.

[0086] The oil and gas content recovery device provided in this embodiment of the invention can execute the oil and gas content recovery method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method.

[0087] Example 4

[0088] Figure 4 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, 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 processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0089] like Figure 4 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0090] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0091] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the total oil and gas recovery method.

[0092] In some embodiments, the oil and gas content recovery method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the oil and gas content recovery method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the oil and gas content recovery method by any other suitable means (e.g., by means of firmware).

[0093] Various embodiments 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 standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0094] Computer programs used to implement 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, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0095] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0096] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0097] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0098] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0099] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0100] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for restoring total oil and gas content, characterized in that, include: Determine the first moment of the first drilling operation, where the first moment is the moment when the formation cuttings from the first drilling operation are obtained; Determine the primary relationship; The first relationship is used to describe the change in the total amount of oil and gas in the formation of the first drilling cuttings at different times; Based on the first time point and the first relationship, determine the total amount of oil and gas in the formation corresponding to the first well at the second time point.

2. The method according to claim 1, characterized in that, Determine the first relation, including: Determine the second relationship of the formation cuttings corresponding to the first well; the second relationship is the correspondence of the total oil and gas content of the formation in the formation cuttings corresponding to the sample well over time. Based on the second relationship, a first function is determined; the first function is a function corresponding to time and total formation oil and gas content, and the degree to which the first function satisfies the second relationship is greater than a preset degree; Based on the first function, determine the first relationship.

3. The method according to claim 2, characterized in that, Based on the first function, the first relationship is determined, including: A third relationship is determined for the formation cuttings corresponding to the second well; the third relationship is the correspondence between the total amount of oil and gas in the formation cuttings corresponding to the second well and the change over time; the distance between the second well and the first well is less than a preset distance; Based on the third relationship, the first function is adjusted to obtain the second function; The first relationship is determined based on the second function.

4. The method according to claim 2, characterized in that, The first function is the natural logarithm function.

5. The method according to claim 2, characterized in that, The expression for the first function is: Rp=a×ln(Δt1+1)+100 Where Δt1=t1-t0; Rp is the percentage of the total remaining oil and gas content in the formation cuttings of the first well at time t1; a is an adjustment coefficient, dimensionless; Δt1 is the time difference between the oil-bearing cuttings analysis of the formation cuttings of the first well at time t1 and the cuttings return; t1 is the time when the geochemical logging analysis of the formation cuttings of the first well is performed; t0 is the time when the cuttings of the formation cuttings of the first well return during the drilling process of the first well.

6. The method according to claim 5, characterized in that, The formula for calculating the adjustment coefficient in the expression of the second function is: a = (Rp² - 100) / ln(Δt² + 1); Where Rp2 = Pg2 / Pg20 × 100; Δt2 = t2 - t20; Rp2 is the percentage of the remaining total oil and gas in the second well at time t2, in %; Δt2 is the time difference between the oil cuttings analysis and the cuttings return at time t2 in the second well; Pg2 is the total oil and gas in the formation analyzed by geochemical logging at time t2 in the second well, in mg / g; Pg20 is the original total oil and gas in the formation analyzed by geochemical logging or laboratory analysis when the cuttings return in the second well, in mg / g; t2 is the time of geochemical logging analysis in the second well; t20 is the time of cuttings return during the second drilling process.

7. A device for restoring total oil and gas content, characterized in that, include: The target parameter determination module is used to determine the first moment of the first drilling, which is the moment when the formation cuttings of the first drilling are obtained. The first relationship determination module is used to determine the first relationship; the first relationship is used to describe the change in the total amount of oil and gas in the formation of the first drilling formation cuttings at different times. The total oil and gas content determination module is used to determine the total oil and gas content of the formation corresponding to the first well at the second time point, based on the first time point and the first relationship.

8. The apparatus according to claim 7, characterized in that, The first relationship determination module includes: The second relationship determination module is used to determine the second relationship of the formation cuttings corresponding to the first well; the second relationship is the correspondence of the total amount of oil and gas in the formation cuttings corresponding to the sample well over time. The first function determination module is used to determine a first function based on the second relationship; the first function is a function corresponding to time and total formation oil and gas content, and the degree to which the first function satisfies the second relationship is greater than a preset degree; The first relation generation module is used to determine the first relation based on the first function.

9. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the method for restoring total oil and gas content as described in any one of claims 1-6.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the method for restoring the total amount of oil and gas as described in any one of claims 1-6.

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