Method and device for determining the amount of oil and gas drilling cuttings returned

Abstract

The present invention discloses a method and device for determining the amount of oil and gas drilling cuttings returned, wherein the method comprises: obtaining historical cuttings flow parameters, weighing data before and after drying of wet cuttings samples, and clay mineral content data of drilling fluid; determining the cuttings flow value during the interruption period according to the historical cuttings flow parameters; determining the unit cuttings weight correction coefficient according to the weighing data before and after drying of the wet cuttings samples; determining the mass data of finely crushed cuttings that cannot be returned with the vibrating screen according to the clay mineral content data of the drilling fluid; determining the amount of oil and gas drilling cuttings returned according to the cuttings flow value during the interruption period, the unit cuttings weight correction coefficient, and the mass data of finely crushed cuttings that cannot be returned with the vibrating screen. The present invention can determine the amount of oil and gas drilling cuttings returned, improve data accuracy, and ensure wellbore cleaning efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas drilling, and in particular to a method and a device for determining the amount of returned cuttings from oil and gas drilling. Background Art

[0002] Horizontal wells have become an important way to develop oil and gas resources. Taking the Sichuan-Chongqing shale gas of PetroChina as an example, 401 wells were drilled in 2019, and the annual number of horizontal wells is expected to exceed 500 on average from 2020 to 2035. During the horizontal well drilling process, due to the gravity effect of the cuttings and the serious eccentricity of the drill pipe (the mud flow rate in the narrow gap is low or even zero, and the ability to suspend and carry cuttings is lost), the cuttings are very likely to form cuttings deposition beds in the high-angle well section and the horizontal well section. Excessive cuttings deposition in the borehole of horizontal wells and poor borehole cleanliness will cause many production problems: First, it will increase the concentration of cuttings in the drilling fluid, increase the equivalent of the drilling fluid annulus circulation, and easily leak the formation; second, the formation of cuttings bed will increase the friction and torque of the drill pipe, thereby increasing the risk of drill bit sticking; third, if the cuttings at the bottom of the well are not cleaned in time, the drill bit will repeatedly break the cuttings, reduce the mechanical drilling speed and wear the drill bit; fourth, the cuttings deposition affects the lifting and lowering of the drill tool, and the cuttings bed must be removed in time by short lifting and reaming, otherwise it will cause accidents such as drill bit sticking. At the same time, frequent reaming will cause the wellbore to be irregular, and it will also increase the drilling operation cycle and affect the benefits. Therefore, it is necessary to control the actual cuttings return volume in real time during the drilling process, and ensure the volume balance of the actual return and theoretically generated cuttings by adjusting reasonable drilling parameters and operating procedures to improve the wellbore cleaning efficiency.

[0003] The existing method for determining the amount of oil and gas drilling cuttings has the problem of low data accuracy, which in turn affects the efficiency of wellbore cleaning. Therefore, there is an urgent need for a solution for determining the amount of oil and gas drilling cuttings that can overcome the above problem. Summary of the invention

[0004] The embodiment of the present invention provides a method for determining the amount of oil and gas drilling cuttings returned, which is used to determine the amount of oil and gas drilling cuttings returned, improve data accuracy, and ensure wellbore cleaning efficiency. The method includes:

[0005] Obtain historical cuttings flow parameters, wet cuttings sample weight data before drying, weight data after drying and drilling fluid clay mineral content data;

[0006] Determining the value of the cuttings flow rate during the interruption period according to the historical cuttings flow rate parameters;

[0007] Determine a unit rock cutting weight correction coefficient according to the weighing data of the wet rock cutting sample before drying and the weighing data after drying;

[0008] Determine the quality data of the fine rock cuttings that cannot be returned with the vibrating screen based on the clay mineral content data of the drilling fluid;

[0009] The amount of cuttings returned from oil and gas drilling is determined based on the cuttings flow rate value during the interruption period, the unit cuttings weight correction factor and the quality data of fine cuttings that cannot be returned with the vibrating screen.

[0010] The embodiment of the present invention provides a device for determining the amount of oil and gas drilling cuttings returned, which is used to determine the amount of oil and gas drilling cuttings returned, improve data accuracy, and ensure wellbore cleaning efficiency. The device includes:

[0011] A data acquisition module is used to obtain historical cuttings flow parameters, cuttings wet sample weighing data before drying, weighing data after drying and drilling fluid clay mineral content data;

[0012] A flow value determination module, used to determine the cuttings flow value during the interruption period according to the historical cuttings flow parameters;

[0013] A coefficient determination module, used for determining a unit rock cutting weight correction coefficient according to the weighing data before and after drying of the wet rock cutting sample;

[0014] A quality determination module, used to determine the quality data of the fine rock cuttings that cannot be returned with the vibrating screen according to the clay mineral content data of the drilling fluid;

[0015] The return amount determination module is used to determine the return amount of rock cuttings according to the rock cutting flow value during the interruption period, the unit rock cutting weight correction coefficient and the quality data of fine rock cuttings that cannot be returned with the vibrating screen.

[0016] An embodiment of the present invention further provides a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the method for determining the amount of returned cuttings from oil and gas drilling.

[0017] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for executing the above-mentioned method for determining the amount of returned cuttings in oil and gas drilling.

[0018] The embodiment of the present invention obtains historical cuttings flow parameters, weighing data of wet cuttings samples before drying, weighing data after drying and clay mineral content data of drilling fluid; determines the cuttings flow value during the interruption period according to the historical cuttings flow parameters; determines the unit cuttings weight correction coefficient according to the weighing data of the wet cuttings samples before drying and after drying; determines the mass data of fine cuttings that cannot be returned with the vibrating screen according to the clay mineral content data of the drilling fluid; determines the amount of cuttings returned from oil and gas drilling according to the cuttings flow value during the interruption period, the unit cuttings weight correction coefficient and the mass data of fine cuttings that cannot be returned with the vibrating screen. In the process of determining the amount of returned cuttings in oil and gas drilling, the embodiment of the present invention takes into account the cuttings flow value during the interruption period, the unit cuttings weight correction coefficient and the quality data of fine cuttings that cannot be returned with the vibrating screen, thereby solving the problems of data monitoring interruption of the cuttings weighing device during operation, lack of depth marking, omission of small cuttings, conversion of wet and dry cuttings, etc., accurately calculating the amount of returned cuttings in oil and gas drilling, improving data accuracy, ensuring wellbore cleaning efficiency, and providing more precise guidance for on-site drilling parameter adjustment and process operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. 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. In the drawings:

[0020] Figure 1 Schematic diagram of a method for determining the amount of oil and gas drilling cuttings return in an embodiment of the present invention;

[0021] Figure 2 Schematic diagram of a method for determining the amount of oil and gas drilling cuttings return in an embodiment of the present invention;

[0022] Figure 3 This is a structural diagram of a device for determining the amount of returned cuttings from oil and gas drilling in an embodiment of the present invention;

[0023] Figure 4 This is a structural diagram of a device for determining the amount of returned cuttings from oil and gas drilling in an embodiment of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0026] As mentioned above, the method for determining the amount of oil and gas drilling cuttings returned in the prior art is to install a cuttings weighing device at the outlet of the vibrating screen to weigh the cuttings returned from the bottom of the well in real time to evaluate the degree of wellbore cleanliness. However, this technology has the following problems: (1) After a certain amount of cuttings is loaded, the cuttings weighing device must dump the cuttings, which will cause data monitoring interruption when the cuttings volume data is stored; (2) Since the cuttings flow data measured while drilling is the cuttings weight value measured using a timestamp mark, there is a lack of depth marks, and it is impossible to track the depth of cuttings returned while drilling; (3) When fine cuttings pass through the vibrating screen, they directly enter the liquid tank with the drilling fluid, but do not reach the weighing device, resulting in a problem of missing weight; (4) The weighed cuttings particles have a surface adsorbed with drilling fluid, and are not truly dry cuttings at the bottom of the well, which requires further verification.

[0027] In order to determine the amount of oil and gas drilling cuttings returned, improve data accuracy, and ensure wellbore cleaning efficiency, an embodiment of the present invention provides a method for determining the amount of oil and gas drilling cuttings returned, such as Figure 1 As shown, the method may include:

[0028] Step 101, obtaining historical cuttings flow parameters, cuttings wet sample weighing data before drying, weighing data after drying and drilling fluid clay mineral content data;

[0029] Step 102, determining the cuttings flow value during the interruption period according to the historical cuttings flow parameters;

[0030] Step 103, determining a unit rock cutting weight correction coefficient according to the weighing data before and after drying of the wet rock cutting sample;

[0031] Step 104, determining the quality data of the fine rock cuttings that cannot be returned with the vibrating screen according to the clay mineral content data of the drilling fluid;

[0032] Step 105: Determine the amount of oil and gas drilling cuttings returned based on the cuttings flow rate value during the interruption period, the unit cuttings weight correction coefficient and the quality data of fine cuttings that cannot be returned with the vibrating screen.

[0033] Depend on Figure 1As shown, it can be known that the embodiment of the present invention obtains historical cuttings flow parameters, weighing data of wet cuttings samples before drying, weighing data after drying and clay mineral content data of drilling fluid; determines the cuttings flow value during the interruption period according to the historical cuttings flow parameters; determines the unit cuttings weight correction coefficient according to the weighing data of the wet cuttings samples before drying and after drying; determines the mass data of fine cuttings that cannot be returned with the vibrating screen according to the clay mineral content data of the drilling fluid; determines the amount of cuttings returned from oil and gas drilling according to the cuttings flow value during the interruption period, the unit cuttings weight correction coefficient and the mass data of fine cuttings that cannot be returned with the vibrating screen. In the process of determining the amount of returned cuttings in oil and gas drilling, the embodiment of the present invention takes into account the cuttings flow value during the interruption period, the unit cuttings weight correction coefficient and the quality data of fine cuttings that cannot be returned with the vibrating screen, thereby solving the problems of data monitoring interruption of the cuttings weighing device during operation, lack of depth marking, omission of small cuttings, conversion of wet and dry cuttings, etc., accurately calculating the amount of returned cuttings in oil and gas drilling, improving data accuracy, ensuring wellbore cleaning efficiency, and providing more precise guidance for on-site drilling parameter adjustment and process operation.

[0034] In specific implementation, historical cuttings flow parameters, wet cuttings sample weighing data before drying, weighing data after drying and drilling fluid clay mineral content data are obtained, and the cuttings flow value during the interruption period is determined based on the historical cuttings flow parameters.

[0035] In an embodiment, determining the cuttings flow value during the interruption period according to the historical cuttings flow parameter includes: performing data fitting processing on the historical cuttings flow parameter using a polynomial or a least square method; and determining the cuttings flow value during the interruption period according to the fitting processing result. Thus, the error caused by the interruption of cuttings reception due to starting the scraping / dumping unit to remove the existing cuttings can be eliminated.

[0036] During specific implementation, the unit rock cutting weight correction coefficient is determined based on the weighing data of the wet rock cutting sample before drying and the weighing data after drying.

[0037] In an embodiment, a unit rock cutting weight correction coefficient is determined based on the weighing data before and after drying of the wet rock cutting sample, including: calculating the ratio of the weighing data after drying to the weighing data before drying of the wet rock cutting sample, and using the ratio as the unit rock cutting weight correction coefficient.

[0038] In this embodiment, according to the lithology of the formation encountered on site, the drilling fluid conditions and the drill bit type, when the drilling fluid properties and the formation change, the wet sample of the cuttings is taken out for indoor weighing to obtain the weighing data before drying W1, and the cuttings are cleaned and dried to obtain the weighing data after drying W2, and then the unit cuttings weight correction coefficient is determined according to the following formula:

[0039]

[0040] In a specific implementation, the quality data of the fine rock cuttings that cannot be returned with the vibrating screen is determined based on the clay mineral content data of the drilling fluid.

[0041] In an embodiment, the quality data of fine rock cuttings that cannot be returned with the vibrating screen is determined based on the clay mineral content data of the drilling fluid, including: obtaining data on drilling cycle time per meter, drilling fluid displacement data, drilling fluid density data and drilling fluid bentonite content data; determining the quality data of fine rock cuttings that cannot be returned with the vibrating screen based on the clay mineral content data of the drilling fluid, data on drilling cycle time per meter, drilling fluid displacement data, drilling fluid density data and drilling fluid bentonite content data.

[0042] In this embodiment, the clay mineral content in the drilling fluid is measured by the methylene blue test, and the mass of the fine rock cuttings that cannot be returned with the vibrating screen is calculated according to the following formula in combination with the drilling cycle time per meter, the drilling fluid displacement, the drilling fluid density, and the bentonite content of the drilling fluid:

[0043] M 细碎岩屑 =LGS×Q×t×ρ m -Q×t×MBT (2)

[0044] Among them, M 细碎岩屑 is the mass data of fine rock cuttings that cannot be returned with the vibrating screen, kg / m; LGS is the clay mineral content data of the drilling fluid, %; Q is the displacement data of the drilling fluid, m 3 / min; ρ m is the drilling fluid density data, kg / m 3 ; MBT is the bentonite content of drilling fluid, kg / m 3 ; t is the cycle time data per meter of drilling, min.

[0045] In a specific implementation, the amount of oil and gas drilling cuttings returned is determined based on the cuttings flow value during the interruption period, the unit cuttings weight correction coefficient and the quality data of fine cuttings that cannot be returned with the vibrating screen.

[0046] In the embodiment, the measured weight of rock cuttings per meter is converted into the volume of rock cuttings per meter by using the formation volume density of the corresponding layer measured by the adjacent well, and the mass of fine rock cuttings per meter not removed by the vibrating screen is converted into the volume of fine rock cuttings per meter not removed by the vibrating screen, and the amount of oil and gas drilling cuttings returned is calculated according to the following formula:

[0047]

[0048] Among them, v 实际 is the amount of oil and gas drilling cuttings returned (volume of dry cuttings returned per meter), m 3 ; φi is the cuttings flow value during the interruption period, m 3 ; h0 and h are the starting and ending well depths, m; η is the measured cuttings weight per meter, kg; ρ c and ρ b They are respectively the density of rock cuttings and the density of bentonite, kg / m 3 ; μ is the correction factor for unit cuttings weight.

[0049] In the embodiment, Figure 2 As shown, the method for determining the amount of oil and gas drilling cuttings return also includes: step 106, obtaining real-time parameters of engineering logging; determining late well depth data based on the real-time parameters of engineering logging; after determining the amount of oil and gas drilling cuttings return, integrating the amount of cuttings return with the late well depth data.

[0050] Based on the same inventive concept, the embodiment of the present invention also provides a device for determining the amount of oil and gas drilling cuttings returned, as described in the following embodiments. Since the principles of solving these problems are similar to the method for determining the amount of oil and gas drilling cuttings returned, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0051] Figure 3 FIG. 1 is a structural diagram of a device for determining the amount of oil and gas drilling cuttings returned in an embodiment of the present invention. Figure 3 As shown, the device comprises:

[0052] The data acquisition module 301 is used to obtain historical cuttings flow parameters, the weighing data of wet cuttings samples before drying, the weighing data after drying and the clay mineral content data of the drilling fluid;

[0053] A flow value determination module 302, for determining the value of the cuttings flow during the interruption period according to the historical cuttings flow parameters;

[0054] The coefficient determination module 303 is used to determine the unit rock cutting weight correction coefficient according to the weighing data before and after drying of the wet rock cutting sample;

[0055] The quality determination module 304 is used to determine the quality data of the fine rock cuttings that cannot be returned with the vibrating screen according to the clay mineral content data of the drilling fluid;

[0056] The return amount determination module 305 is used to determine the return amount of rock cuttings according to the rock cutting flow value during the interruption period, the unit rock cutting weight correction coefficient and the quality data of the fine rock cuttings that cannot be returned with the vibrating screen.

[0057] In one embodiment, the flow value determination module 302 is further used to:

[0058] Using polynomial or least square method, data fitting processing is performed on the historical cuttings flow parameters;

[0059] According to the result of the fitting process, the cuttings flow value during the interruption period is determined.

[0060] In one embodiment, the coefficient determination module 303 is further used to:

[0061] The ratio of the weighing data after drying and the weighing data before drying of the wet rock cuttings sample is calculated, and the ratio is used as the unit rock cuttings weight correction coefficient.

[0062] In one embodiment, the quality determination module 304 is further configured to:

[0063] Obtain data on drilling cycle time per meter, drilling fluid displacement, drilling fluid density and drilling fluid bentonite content;

[0064] The quality data of the fine rock cuttings that cannot be returned with the vibrating screen are determined based on the drilling fluid clay mineral content data, drilling per meter circulation time data, drilling fluid displacement data, drilling fluid density data and drilling fluid bentonite content data.

[0065] In one embodiment, if Figure 4 As shown, the data acquisition module 301 is also used to: obtain real-time parameters of engineering logging;

[0066] The rock cuttings return amount determination device also includes:

[0067] A well depth determination module 306, for determining the late well depth data according to the real-time parameters of the engineering logging;

[0068] The integration module 307 is used to integrate the oil and gas drilling cuttings return volume with the late well depth data after determining the oil and gas drilling cuttings return volume.

[0069] In summary, the embodiment of the present invention obtains historical cuttings flow parameters, weighing data of wet cuttings samples before drying, weighing data after drying and clay mineral content data of drilling fluid; determines the cuttings flow value during the interruption period according to the historical cuttings flow parameters; determines the unit cuttings weight correction coefficient according to the weighing data of the wet cuttings samples before drying and after drying; determines the mass data of fine cuttings that cannot be returned with the vibrating screen according to the clay mineral content data of the drilling fluid; determines the amount of cuttings returned from oil and gas drilling according to the cuttings flow value during the interruption period, the unit cuttings weight correction coefficient and the mass data of fine cuttings that cannot be returned with the vibrating screen. In the process of determining the amount of returned cuttings in oil and gas drilling, the embodiment of the present invention takes into account the cuttings flow value during the interruption period, the unit cuttings weight correction coefficient and the quality data of fine cuttings that cannot be returned with the vibrating screen, thereby solving the problems of data monitoring interruption of the cuttings weighing device during operation, lack of depth marking, omission of small cuttings, conversion of wet and dry cuttings, etc., accurately calculating the amount of returned cuttings in oil and gas drilling, improving data accuracy, ensuring wellbore cleaning efficiency, and providing more precise guidance for on-site drilling parameter adjustment and process operation.

[0070] Based on the above invention concept, Figure 5 As shown, the present invention also proposes a computer device 500, including a memory 510, a processor 520, and a computer program 530 stored in the memory 510 and executable on the processor 520, wherein the processor 520 implements the aforementioned method for determining the amount of oil and gas drilling cuttings returned when executing the computer program 530.

[0071] Based on the aforementioned inventive concept, the present invention proposes a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the aforementioned method for determining the amount of oil and gas drilling cuttings returned is implemented.

[0072] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take 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 code.

[0073] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0074] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0075] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0076] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for determining the amount of oil and gas drilling cuttings return, characterized in that: include: Obtain historical cuttings flow parameters, wet cuttings sample weight data before drying, weight data after drying and drilling fluid clay mineral content data; Determining the value of the cuttings flow rate during the interruption period according to the historical cuttings flow rate parameters; Determine a unit rock cutting weight correction coefficient according to the weighing data of the wet rock cutting sample before drying and the weighing data after drying; Determine the quality data of the fine rock cuttings that cannot be returned with the vibrating screen based on the clay mineral content data of the drilling fluid; Determine the amount of cuttings returned from oil and gas drilling according to the cuttings flow rate value during the interruption period, the unit cuttings weight correction factor and the quality data of fine cuttings that cannot be returned with the vibrating screen; According to the clay mineral content data of the drilling fluid, the quality data of the fine rock cuttings that cannot be returned with the vibrating screen is determined, including: obtaining the data of the drilling circulation time per meter, the drilling fluid displacement data, the drilling fluid density data and the drilling fluid bentonite content data; according to the clay mineral content data of the drilling fluid, the data of the drilling circulation time per meter, the drilling fluid displacement data, the drilling fluid density data and the drilling fluid bentonite content data, the quality data of the fine rock cuttings that cannot be returned with the vibrating screen is determined.

2. The method for determining the amount of oil and gas drilling cuttings return according to claim 1, characterized in that: Determining the cuttings flow value during the interruption period according to the historical cuttings flow parameters includes: Using polynomial or least square method, data fitting processing is performed on the historical cuttings flow parameters; According to the result of the fitting process, the cuttings flow value during the interruption period is determined.

3. The method for determining the amount of oil and gas drilling cuttings return according to claim 1, characterized in that: According to the weighing data of the wet rock cuttings sample before drying and after drying, the unit rock cuttings weight correction factor is determined, including: The ratio of the weighing data after drying and the weighing data before drying of the wet rock cuttings sample is calculated, and the ratio is used as the unit rock cuttings weight correction coefficient.

4. The method for determining the amount of oil and gas drilling cuttings return according to claim 1, characterized in that: Also includes: Obtain real-time parameters of engineering logging; Determining the late well depth data according to the real-time parameters of the engineering logging; After determining the oil and gas drilling cuttings return volume, the cuttings return volume is integrated with the late well depth data.

5. A device for determining the amount of oil and gas drilling cuttings return, characterized in that: include: A data acquisition module is used to obtain historical cuttings flow parameters, cuttings wet sample weighing data before drying, weighing data after drying and drilling fluid clay mineral content data; A flow value determination module, used to determine the cuttings flow value during the interruption period according to the historical cuttings flow parameters; A coefficient determination module, used for determining a unit rock cutting weight correction coefficient according to the weighing data before and after drying of the wet rock cutting sample; A quality determination module, used to determine the quality data of the fine rock cuttings that cannot be returned with the vibrating screen according to the clay mineral content data of the drilling fluid; A return amount determination module is used to determine the return amount of rock cuttings according to the rock cutting flow value during the interruption period, the unit rock cutting weight correction coefficient and the quality data of the fine rock cuttings that cannot be returned with the vibrating screen; The quality determination module is specifically used to obtain the data of drilling cycle time per meter, drilling fluid displacement data, drilling fluid density data and drilling fluid bentonite content data; according to the drilling fluid clay mineral content data, drilling cycle time per meter, drilling fluid displacement data, drilling fluid density data and drilling fluid bentonite content data, determine the quality data of fine rock cuttings that cannot be returned with the vibrating screen.

6. The device for determining the amount of oil and gas drilling cuttings return according to claim 5, characterized in that: The flow value determination module is further used for: Using polynomial or least square method, data fitting processing is performed on the historical cuttings flow parameters; According to the result of the fitting process, the cuttings flow value during the interruption period is determined.

7. The device for determining the amount of oil and gas drilling cuttings return according to claim 5, characterized in that: The coefficient determination module is further used for: The ratio of the weighing data after drying and the weighing data before drying of the wet rock cuttings sample is calculated, and the ratio is used as the unit rock cuttings weight correction coefficient.

8. The device for determining the amount of returned oil and gas drilling cuttings according to claim 5, characterized in that: The data acquisition module is also used to: obtain real-time parameters of engineering logging; The rock cuttings return amount determination device also includes: A well depth determination module, used to determine the late well depth data according to the real-time parameters of the engineering logging; The integration module is used to integrate the cuttings return volume with the late well depth data after determining the cuttings return volume of oil and gas drilling.

9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 4 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 4 is implemented.

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