A method, device, equipment and readable storage medium for determining ablation amount

Abstract

The present application provides a method, device, equipment and readable storage medium for determining the amount of denudation, which can determine the uniform temperature value and standard error of each sample collected in a geological vertical profile where an unconformity exists; then linearly fit the distribution of the uniform temperature values ​​of each sample of the upper geological layer and the lower geological layer located on the unconformity to obtain an upper temperature fitting line and a lower temperature fitting line; calculate the uniform temperature corresponding to the upper intersection of the upper temperature fitting line and the unconformity, and the uniform temperature corresponding to the lower intersection of the lower temperature fitting line and the unconformity; determine the geothermal gradient based on the upper temperature fitting line and the lower temperature fitting line; finally, determine the amount of denudation of the unconformity based on the difference between the uniform temperature corresponding to the upper intersection and the uniform temperature corresponding to the lower intersection, and the geothermal gradient, so as to provide important reference parameters for geologists to carry out geological research and explore for petroleum resources.

Description

Technical Field

[0001] The present application relates to the field of geological exploration technology, and in particular to a method, device, equipment and readable storage medium for determining the amount of erosion. Background Art

[0002] The thickness of the denudation of sedimentary discontinuities in sedimentary basins has always been an important parameter that geologists have been trying to explore. It is one of the essential key factors in the fields of geological research and oil exploration. Determining the thickness of the stratum denudation is an important basic work for studying the evolution history of basins and conducting quantitative evaluation of oil and gas resources. By calculating the denudation of the stratum to determine the maximum burial depth of the stratum, geologists can determine the oil generation period and gas generation period of the source rock below the Tertiary System, and then accurately evaluate the potential of oil and gas resources and select the optimal exploration targets. This is particularly important for the exploration of oil and gas resources below the Tertiary System.

[0003] Therefore, how to determine the erosion thickness of sedimentary discontinuities in sedimentary basins has always been a concern. Summary of the invention

[0004] The present application aims to solve at least one of the above-mentioned technical defects. In view of this, the present application provides a method, device, equipment and readable storage medium for determining the amount of erosion, which are used to solve the technical problem of determining the amount of erosion of sedimentary discontinuities in sedimentary basins.

[0005] A method for determining an amount of ablation, comprising:

[0006] Determine the mean temperature and standard error for each sample collected in a vertical section of the geology where an unconformity exists;

[0007] Based on the uniform temperature value and standard error of each sample, a linear fit is performed on the uniform temperature value distribution of each sample of the upper geological layer and the lower geological layer located on the unconformity surface to obtain an upper temperature fitting line and a lower temperature fitting line;

[0008] Calculating the uniform temperature corresponding to the intersection point of the upper temperature fitting line and the upper layer of the unconformity surface, and calculating the uniform temperature corresponding to the intersection point of the lower temperature fitting line and the lower layer of the unconformity surface;

[0009] Determining the geothermal gradient based on the upper temperature fitting line and the lower temperature fitting line;

[0010] The erosion amount of the unconformity surface is determined based on the difference between the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point, and the geothermal gradient.

[0011] Preferably, the determining of the uniform temperature value and standard error of each sample collected in the geological vertical section where the unconformity exists comprises:

[0012] Measuring the homogenization temperature of each primary fluid inclusion in each sample collected along a geological vertical section where an unconformity exists;

[0013] The average value and standard error of the homogenous temperature of each primary fluid inclusion of each sample are calculated as the homogenous temperature value and standard error of each sample.

[0014] Preferably, determining the geothermal gradient based on the upper temperature fitting line and the lower temperature fitting line comprises:

[0015] Calculating the slopes of the upper temperature fitting line and the lower temperature fitting line respectively;

[0016] The inverse of the slope of the upper temperature fitting line is taken as the overlying geothermal gradient;

[0017] The inverse of the slope of the underlying temperature fitting line is taken as the underlying geothermal gradient.

[0018] Preferably, the geothermal gradient includes an overlying geothermal gradient and an underlying geothermal gradient, and the determination of the erosion amount of the unconformity surface based on the difference between the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point and the geothermal gradient includes:

[0019] Determine the magnitude of the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point;

[0020] If there is an overlying stratum on the unconformity surface, and the uniform temperature corresponding to the intersection point of the upper stratum is lower than the uniform temperature corresponding to the intersection point of the lower stratum, then the amount of denudation of the unconformity surface is determined to be equal to the difference between the uniform temperature corresponding to the intersection point of the upper stratum and the uniform temperature corresponding to the intersection point of the lower stratum divided by the underlying geothermal gradient;

[0021] If the uniform temperature corresponding to the upper intersection is greater than the uniform temperature corresponding to the lower intersection, the erosion amount of the unconformity surface is determined to be equal to the difference between the uniform temperature corresponding to the lower intersection and the surface temperature divided by the overlying geothermal gradient.

[0022] Preferably, the determining the erosion amount of the unconformity surface based on the difference between the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point, and the geothermal gradient, further includes:

[0023] If there is no overlying stratum above the unconformity surface, and the uniform temperature corresponding to the upper intersection point is lower than the uniform temperature corresponding to the lower intersection point, then the erosion amount of the unconformity surface is determined to be equal to the difference between the uniform temperature corresponding to the lower intersection point and the surface temperature divided by the underlying geothermal gradient.

[0024] A device for determining an amount of ablation, comprising:

[0025] a temperature determination unit for determining the uniform temperature value and standard error of each sample collected in a geological vertical section where an unconformity exists;

[0026] A fitting unit is used to perform linear fitting on the uniform temperature value distribution of each sample of the upper geological layer and the lower geological layer located on the unconformity surface based on the uniform temperature value and standard error of each sample, so as to obtain an upper temperature fitting line and a lower temperature fitting line;

[0027] a calculation unit, used for calculating the uniform temperature corresponding to the intersection point between the upper temperature fitting line and the upper layer of the unconformity surface, and calculating the uniform temperature corresponding to the intersection point between the lower temperature fitting line and the lower layer of the unconformity surface;

[0028] A geothermal gradient determining unit, configured to determine a geothermal gradient based on the upper temperature fitting line and the lower temperature fitting line;

[0029] The erosion amount determination unit is used to determine the erosion amount of the unconformity surface based on the difference between the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point, and the geothermal gradient.

[0030] Preferably, the execution process of the temperature determination unit includes:

[0031] Measuring the homogenization temperature of each primary fluid inclusion in each sample collected along a geological vertical section where an unconformity exists;

[0032] The average value and standard error of the homogenous temperature of each primary fluid inclusion of each sample are calculated as the homogenous temperature value and standard error of each sample.

[0033] Preferably, the execution process of the geothermal gradient determination unit includes:

[0034] Calculating the slopes of the upper temperature fitting line and the lower temperature fitting line respectively;

[0035] The inverse of the slope of the upper temperature fitting line is taken as the overlying geothermal gradient;

[0036] The inverse of the slope of the underlying temperature fitting line is taken as the underlying geothermal gradient.

[0037] An ablation amount determination device includes: one or more processors, and a memory;

[0038] The memory stores computer-readable instructions, and when the computer-readable instructions are executed by the one or more processors, the steps of the method for determining the amount of erosion as described in any one of the above descriptions are implemented.

[0039] A readable storage medium stores computer-readable instructions. When the computer-readable instructions are executed by one or more processors, the one or more processors implement the steps of the method for determining the amount of erosion as described in any one of the above descriptions.

[0040] It can be seen from the above technical solutions that the embodiment of the present application can determine the uniform temperature value and standard error of each sample collected in the geological vertical section where the unconformity surface exists; based on the determined uniform temperature value and standard error of each sample, the uniform temperature value distribution of each sample of the upper geological layer and the lower geological layer located on the unconformity surface can be linearly fitted to obtain the upper temperature fitting line and the lower temperature fitting line; after obtaining the upper temperature fitting line and the lower temperature fitting line, the uniform temperature corresponding to the upper intersection of the upper temperature fitting line and the unconformity surface can be further calculated, and the uniform temperature corresponding to the lower intersection of the lower temperature fitting line and the unconformity surface can be calculated; the geothermal gradient is determined based on the upper temperature fitting line and the lower temperature fitting line; finally, the amount of erosion of the unconformity surface can be determined based on the difference between the uniform temperature corresponding to the upper intersection and the uniform temperature corresponding to the lower intersection, and the geothermal gradient, which can provide important reference parameters for geologists to carry out geological research and explore for oil resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0042] Figure 1 A flow chart of a method for determining the amount of erosion provided in an embodiment of the present application;

[0043] Figure 2 This is a fitting effect diagram of the uniform temperature of a primary fluid inclusion exemplified in an embodiment of the present application;

[0044] Figure 3 This is a fitting effect diagram of the uniform temperature of a primary fluid inclusion exemplified in an embodiment of the present application;

[0045] Figure 4 A schematic diagram of the structure of an apparatus for determining the amount of ablation as exemplified in an embodiment of the present application;

[0046] Figure 5 This is a hardware structure block diagram of an erosion amount determination device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] Combine the following Figure 1 , introduces the process of the method for determining the amount of erosion given in the embodiment of the present application, which may include the following steps:

[0049] Step S101, determining the uniform temperature value and standard error of each sample collected in a geological vertical section where an unconformity exists.

[0050] Specifically, if a set of rock layers is deposited in an area, and later the geology of the area rises to the surface and suffers erosion, resulting in a long period of sedimentation interruption, and then descends again to accept sedimentation, that is, a certain period of strata is missing between the strata deposited successively, resulting in discontinuity of the upper and lower strata. This contact relationship between the upper and lower strata is called unconformity contact. In geology, there is an erosion surface between the upper and lower strata of the geology with unconformity contact relationship, and this surface is called unconformity. Therefore, in order to determine the erosion of the unconformity, a vertical section can be selected in the geology with unconformity, and multiple samples can be collected at different heights of the overlying strata and underlying strata of the unconformity surface of the vertical section to analyze the erosion amount of the unconformity. There are multiple primary fluid inclusions in the geology with unconformity. It is a common phenomenon that primary fluid inclusions appear in mineral crystals. Primary fluid inclusions are almost formed at the same time as the main mineral and by the same substance. After the primary fluid is filled in the crystal defects, it can be immediately sealed by the main mineral that continues to grow, with basically no material leakage and the volume basically unchanged. Therefore, the primary fluid inclusion is a representative of the original mineralization, diagenetic solution or magma melt. As a sample of ore-forming fluid, the primary fluid inclusion is one of the most important typological characteristics of minerals. By studying the primary fluid inclusion, reliable data can be provided for solving some geological problems. For example, the uniform temperature of the primary fluid inclusion reflects the erosion of the unconformity surface.

[0051] The homogenization temperature of primary fluid inclusions is the instantaneous temperature when the two-phase or multi-phase inclusions at room temperature are transformed into the original uniform single-phase fluid when the temperature rises to a certain degree after artificial heating. It is generally believed that the homogenization temperature of primary fluid inclusions is the lower limit of the mineral formation temperature. After pressure correction, the approximate mineral formation temperature, i.e., the capture temperature of the inclusions, can be obtained, which is the homogenization temperature of the primary fluid inclusions.

[0052] Therefore, the amount of erosion of the unconformity surface in geology can be analyzed by determining the uniform temperature value of each sample collected in the geological vertical section where the unconformity surface exists, so as to analyze the erosion of the unconformity surface.

[0053] It is understandable that in numerical analysis, the standard error can generally be used to illustrate the relative deviation between the actual value and its estimated value, and is mainly used to measure the representativeness of the regression equation. The smaller the value of the estimated standard error, the smaller the approximate error between the estimated value and its true value. Therefore, after determining the uniform temperature value of each sample collected in the geological vertical section where the unconformity exists, the standard error of the uniform temperature of each sample can be further combined to further analyze the erosion amount of the unconformity, so as to better analyze the erosion of the unconformity.

[0054] In particular, before determining the homogenous temperature of each primary fluid inclusion of each sample, each sample collected from different depths of the geology where the unconformity surface exists can be made into a thin section so as to determine the homogenous temperature of each primary fluid inclusion in each sample. In order to obtain a sufficient number of primary fluid inclusions for observation, a sample can be ground into multiple thin sections for observation.

[0055] Among them, a hot and cold stage can be used to perform a uniform measurement on the hydrocarbon and water components in the primary fluid inclusions and their phase change characteristics, and obtain the uniform temperature of each primary fluid inclusion in each sample.

[0056] Step S102, based on the uniform temperature value and standard error of each sample, linear fitting is performed on the uniform temperature value distribution of each sample of the upper geological layer and the lower geological layer located on the unconformity surface to obtain an upper temperature fitting line and a lower temperature fitting line.

[0057] Specifically, in various physical and statistical problems, some data sets are obtained by multiple observations or experiments on relevant variables. They are scattered, not only inconvenient to process, but also usually cannot accurately and fully reflect their inherent laws. In order to obtain the inherent laws between data or use current data to predict expected data, the functional relationship between the coordinates represented by discrete points on the plane can be approximately described or compared with continuous curves. The corresponding problems in high-dimensional space also belong to this category. In particular, when the standard error of the uniform temperature of each sample is relatively small, the least squares method can be used to linearly fit the distribution of the uniform temperature of each sample.

[0058] Therefore, after obtaining the uniform temperature value and standard error of each sample, a linear fit can be made to the uniform temperature value distribution of each sample of the upper geological layer and the lower geological layer located on the unconformity surface, thereby obtaining the uniform temperature distribution of each sample of the upper geological layer and the lower geological layer located on the unconformity surface, and finally forming the upper temperature fitting line and the lower temperature fitting line.

[0059] For example, the uniform temperature and stratigraphic depth of each sample collected from the geology with unconformity surfaces can be set as the observed variables, x is set as the uniform temperature of each sample, and y is the stratigraphic depth of each sample. y can be expressed as a function of x. Assuming that this functional relationship has been theoretically determined by the actual problem, y can be called a theoretical function, but it contains several unknown parameters x. In numerical analysis, curve fitting is the use of analytical expressions to approximate discrete data, that is, the formulation of discrete data. Linear fitting is a type of curve fitting. Therefore, linear fitting operations can be performed on the uniform temperatures of each sample collected from the geology with unconformity surfaces, and the upper temperature fitting line and the lower temperature fitting line in the geology can be obtained.

[0060] Step S103, calculating the uniform temperature corresponding to the intersection point of the upper temperature fitting line and the upper layer of the unconformity surface, and calculating the uniform temperature corresponding to the intersection point of the lower temperature fitting line and the lower layer of the unconformity surface.

[0061] Specifically, it can be seen from the above steps that after linear fitting of the uniform temperature distribution of each sample, the upper temperature fitting line and the lower temperature fitting line can be obtained. Then, the uniform temperature corresponding to the intersection of the unconformity surface and the upper temperature fitting line can be calculated, and the uniform temperature corresponding to the intersection of the lower temperature fitting line and the lower layer of the unconformity surface can be calculated, so as to analyze the erosion amount of the unconformity surface.

[0062] Step S104, determining the geothermal gradient based on the upper temperature fitting line and the lower temperature fitting line.

[0063] Specifically, it can be seen from the above steps that the geothermal gradient of the geology where the unconformity surface is located can be further determined by combining the distribution of the uniform temperature of the upper geology located at the unconformity surface and the uniform temperature of the lower geology located at the unconformity surface.

[0064] It is understandable that the geothermal gradient here is also called "geothermal gradient" and "geothermal warming rate". The geothermal gradient refers to the rate of increase in the temperature of the earth's strata that is not affected by the atmospheric temperature as the depth increases. The geothermal gradient is a parameter that can represent the degree of uneven temperature distribution inside the earth. Generally, the deeper the burial depth, the higher the temperature value, expressed as the value of ℃ increase per 100 meters of vertical depth. The geothermal gradient values ​​are different in different locations, usually (1-3) ℃ / 100 meters, and are higher in volcanic activity areas. The geothermal gradient is an important parameter for determining the erosion of geological unconformity surfaces.

[0065] Step S105, determining the erosion amount of the unconformity surface based on the difference between the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point, and the geothermal gradient.

[0066] Specifically, from the above introduction, it can be known that the present application can obtain the uniform temperature corresponding to the intersection of the unconformity surface and the upper temperature fitting line, and the uniform temperature corresponding to the intersection of the unconformity surface and the lower temperature fitting line. Further, the present application can also determine the difference between the uniform temperatures corresponding to the two intersections. After obtaining the difference between the uniform temperatures of the two intersections, the amount of erosion of the unconformity surface can be further determined in combination with the geothermal gradient.

[0067] It can be seen from the above technical solution that the embodiment of the present application can determine the erosion amount of the unconformity surface based on the uniform temperature of each sample collected from different geological depths where the unconformity surface exists, understand the erosion situation of the unconformity surface, and provide important reference parameters for geologists to conduct geological research and explore for oil resources.

[0068] It can be seen from the above technical solution that the embodiment of the present application can determine the uniform temperature value and standard error of each sample collected in the geological vertical section where the unconformity surface exists. The process is introduced below, and the process may include the following steps:

[0069] Step S11, measuring the uniform temperature of each primary fluid inclusion of each sample collected in the geological vertical section where the unconformity surface exists.

[0070] Specifically, as can be seen from the above introduction, the homogenous temperature of primary fluid inclusions in geology can reflect the erosion of unconformity surfaces in geology. Therefore, before analyzing the erosion amount of unconformity surfaces, the homogenous temperature of each primary fluid inclusion of each sample collected in the geological vertical section where the unconformity surfaces exist can be measured.

[0071] Step S12, calculating the average value and standard error of the homogenous temperature of each primary fluid inclusion of each sample as the homogenous temperature value and standard error of each sample.

[0072] Specifically, after measuring the homogeneous temperature of each primary fluid inclusion of each sample collected, since it may not be possible to collect comprehensive samples from all areas where the amount of erosion is to be determined when collecting samples, the distribution of the homogeneous temperature of each primary fluid inclusion of each sample can be further statistically analyzed, and the average value and standard error of the homogeneous temperature of each primary fluid inclusion of each sample can be calculated as the homogeneous temperature value and standard error of each sample, so as to analyze the distribution law of the homogeneous temperature of each primary fluid inclusion in the geology where the amount of erosion is to be determined.

[0073] Among them, in order to apply the least squares method to perform linear fitting on the uniform temperature distribution of each collected sample, the number of samples collected at different depths in the geology should be as large as possible to ensure that the number of primary fluid inclusion samples available for measuring the uniform temperature is large enough, and further ensure that the standard error of the uniform temperature of the primary fluid inclusions of the collected samples is small.

[0074] It can be seen from the above technical solution that the embodiment of the present application can determine the uniform temperature value and standard error of each sample collected in the geological vertical section where the unconformity exists. In order to analyze the distribution law of the uniform temperature of each primary fluid inclusion in the geology where the amount of erosion is to be determined. Further, it can be used to determine the amount of erosion of the unconformity in geology, providing important reference parameters for geologists to carry out geological research and explore petroleum resources.

[0075] As can be seen from the above technical solution, the geothermal gradient in geology can reflect the amount of erosion of the unconformity surface in geology. The embodiment of the present application can determine the geothermal gradient in geology based on the temperature fitting line of the upper geology located on the unconformity surface and the temperature fitting line of the lower geology located on the unconformity surface. The process is introduced below, and the process may include the following steps:

[0076] Step S21, respectively calculating the slopes of the upper temperature fitting line and the lower temperature fitting line.

[0077] Specifically, from the above introduction, it can be known that the upper temperature fitting line is formed by fitting the uniform temperature of each sample of the upper geological layer located on the unconformity surface in geology, and reflects the distribution of the uniform temperature of the primary fluid inclusions in the upper geological layer located on the unconformity surface in geology. Similarly, the lower temperature fitting line reflects the distribution of the uniform temperature of the primary fluid inclusions in the lower geological layer located on the unconformity surface in geology. Therefore, after obtaining the upper temperature fitting line and the lower temperature fitting line, the slopes of the upper temperature fitting line and the lower temperature fitting line can be calculated respectively, so as to be used to analyze the geothermal gradient of geology.

[0078] The unit of geothermal gradient is ℃ / km.

[0079] Step S22, taking the inverse of the slope of the upper temperature fitting line as the overlying geothermal gradient.

[0080] Specifically, after the slope of the upper temperature fitting line is calculated, the inverse of the slope of the upper temperature fitting line can be used as the overlying geothermal gradient.

[0081] Step S23, taking the inverse of the slope of the lower temperature fitting line as the underlying ground temperature gradient.

[0082] Specifically, after the slope of the lower temperature fitting line is calculated, the inverse of the slope of the lower temperature fitting line can be used as the underlying geothermal gradient.

[0083] In addition, the overlying geothermal gradient and the underlying geothermal gradient can be determined by determining the difference in burial depth and the difference in uniform temperature value corresponding to any two points on the upper temperature fitting line or the lower temperature fitting line.

[0084] The calculation formula of geothermal gradient is:

[0085]

[0086] Wherein, T is the geothermal gradient, including the overlying geothermal gradient and the underlying geothermal gradient;

[0087] t 1 It can be the uniform temperature value corresponding to any point on the upper temperature fitting line or the lower temperature fitting line, t 2 It can be the uniform temperature value corresponding to any other point on the upper temperature fitting line or the lower temperature fitting line;

[0088] h 1 It can be the uniform temperature value t on the upper temperature fitting line or the lower temperature fitting line 1 The corresponding burial depth; h 2 It can be the uniform temperature value t on the upper temperature fitting line or the lower temperature fitting line 2 The corresponding burial depth.

[0089] It can be seen from the above technical solution that the embodiment of the present application can determine the geothermal gradient in geology based on the temperature fitting line of the upper geological layer located on the unconformity surface and the temperature fitting line of the lower geological layer located on the unconformity surface. In order to determine the amount of erosion of the unconformity surface in geology, it provides important reference parameters for geologists to carry out geological research and explore petroleum resources.

[0090] It can be seen from the above technical solution that the embodiment of the present application can determine the erosion amount of the unconformity surface based on the difference between the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point, and the geothermal gradient. The process is described below, and the process may include the following steps:

[0091] Step S31, determining the magnitude of the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point.

[0092] Specifically, it can be known from the above technical solution that the present application can calculate the uniform temperature corresponding to the upper intersection of the upper temperature fitting line and the unconformity surface, and calculate the uniform temperature corresponding to the lower intersection of the lower temperature fitting line and the unconformity surface based on the upper temperature fitting line and the lower temperature fitting line. On this basis, the present application can further determine the size of the uniform temperature corresponding to the upper intersection and the uniform temperature corresponding to the lower intersection, so as to determine the method used to calculate the erosion amount of the unconformity surface.

[0093] Further, when determining the method for calculating the erosion amount of the unconformity surface, if there is an overlying stratum on the unconformity surface, and the uniform temperature corresponding to the upper intersection is lower than the uniform temperature corresponding to the lower intersection, step S32 can be executed; if the uniform temperature corresponding to the upper intersection is higher than the uniform temperature corresponding to the lower intersection, step S33 can be executed; if there is no overlying stratum on the unconformity surface, and the uniform temperature corresponding to the upper intersection is lower than the uniform temperature corresponding to the lower intersection, step S34 can be executed.

[0094] Step S32, determining that the amount of erosion of the unconformity surface is equal to the difference between the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point divided by the underlying geothermal gradient.

[0095] Specifically, when there is an overlying stratum on the unconformity surface, and the uniform temperature corresponding to the upper intersection point is lower than the uniform temperature corresponding to the lower intersection point, it means that the underlying stratum located at the unconformity surface in geology was once buried to a greater depth than its current depth, and thus the unconformity surface in geology was eroded and buried until now. Assuming that the surface temperature remains constant over time, it can be determined that the erosion amount of the unconformity surface is equal to the difference between the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point divided by the underlying geothermal gradient.

[0096] Step S33, determining that the erosion amount of the unconformity surface is equal to the difference between the uniform temperature corresponding to the lower layer intersection point and the surface temperature divided by the overlying geothermal gradient.

[0097] Specifically, when the uniform temperature corresponding to the upper intersection is greater than the uniform temperature corresponding to the lower intersection, it means that although the underlying stratum located at the unconformity surface in geology was buried very deep before being eroded, it did not reach a depth greater than the current burial depth of the underlying stratum, and the current burial depth of the underlying stratum is the maximum depth it has experienced. Assuming that the surface temperature remains constant over time, and the geothermal gradient in the past is equal to the geothermal gradient at the current moment, it can be determined that the erosion amount of the unconformity surface is equal to the difference between the uniform temperature corresponding to the lower intersection and the surface temperature divided by the overlying geothermal gradient.

[0098] Among them, since the underlying strata located on the unconformity surface in geology were further compacted during the later burial process, the thickness of the underlying strata became smaller, and the fitted geothermal gradient became larger than the geothermal gradient before the actual erosion.

[0099] Step S34, determining that the erosion amount of the unconformity surface is equal to the difference between the uniform temperature corresponding to the lower layer intersection point and the surface temperature divided by the underlying geothermal gradient.

[0100] Specifically, if there is no overlying stratum above the unconformity surface, and the uniform temperature corresponding to the upper intersection point is lower than the uniform temperature corresponding to the lower intersection point, it can be determined that the amount of erosion of the unconformity surface is equal to the difference between the uniform temperature corresponding to the lower intersection point and the surface temperature divided by the underlying geothermal gradient.

[0101] It can be understood that, assuming that there is an unconformity surface between the overlying strata and the underlying strata in a geology. Collect multiple samples that can be used for temperature measurement at different depths of the overlying strata and the underlying strata in the geology. And measure the uniform temperature of each primary fluid inclusion of each sample of the overlying strata and the underlying strata respectively. Determine the average value and standard error of the uniform temperature of each primary fluid inclusion of each sample as the uniform temperature value and standard error of each sample. Then, based on the uniform temperature and standard error of each sample of the overlying strata and the underlying strata located at the unconformity surface in the geology, linear fitting can be performed to obtain the upper temperature fitting line and the lower temperature fitting line.

[0102] Indicatively, Figure 2 , Figure 3 As shown, Figure 2-Figure 3 This is a fitting line effect diagram of a uniform temperature of an example of an embodiment of the present application; wherein, Figure 2 The intersection of the upper temperature fitting line and the unconformity surface is illustrated. Figure 3 The intersection of the lower temperature fitting line and the unconformity surface is illustrated.

[0103] The inverse of the slope of the upper temperature fitting line is the overlying geothermal gradient G 1The inverse of the slope of the lower temperature fitting line is the underlying ground temperature gradient G 2 . Calculate the intersection coordinates of the upper temperature fitting line and the unconformity surface (T 1 , h), and the coordinates of the intersection of the lower temperature fitting line and the unconformity surface (T 2 , h), the uniform temperatures of the two intersection points correspond to T 1 、T 2 , where Ts represents the surface temperature.

[0104] When T 2 >T 1 When the erosion thickness of the unconformity surface = (T 2 -Ts) / G 2 (like Figure 2 shown).

[0105] When T 2 <T 1 When the geothermal gradient in the past is equal to the geothermal gradient at the current moment, the erosion thickness of the unconformity surface = (T 2 -Ts) / G 1 (like Figure 3 shown).

[0106] As can be seen from the above technical solution, the embodiment of the present application can determine the erosion amount of the unconformity surface based on the difference between the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point, and the geothermal gradient, so as to provide important reference parameters for geologists to carry out geological research and explore petroleum resources.

[0107] The following is a description of an ablation amount determination device provided in an embodiment of the present application. The ablation amount determination device described below and the ablation amount determination method described above can refer to each other.

[0108] See also Figure 4 , Figure 4 This is a schematic diagram of the structure of an erosion amount determination device disclosed in an embodiment of the present application.

[0109] like Figure 4 As shown, the ablation amount determining device may include:

[0110] The temperature determination unit 101 is used to determine the uniform temperature value and standard error of each sample collected in the geological vertical section where the unconformity surface exists;

[0111] The fitting unit 102 is used to perform linear fitting on the uniform temperature value distribution of each sample of the upper geological layer and the lower geological layer located on the unconformity surface based on the uniform temperature value and standard error of each sample, so as to obtain an upper temperature fitting line and a lower temperature fitting line;

[0112] A calculation unit 103 is used to calculate the uniform temperature corresponding to the intersection point of the upper temperature fitting line and the upper layer of the unconformity surface, and calculate the uniform temperature corresponding to the intersection point of the lower temperature fitting line and the lower layer of the unconformity surface;

[0113] A geothermal gradient determining unit 104, configured to determine a geothermal gradient based on the upper temperature fitting line and the lower temperature fitting line;

[0114] The erosion amount determination unit 105 is used to determine the erosion amount of the unconformity surface based on the difference between the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point, and the geothermal gradient.

[0115] It can be seen from the above technical solution that the device of the embodiment of the present application can use the temperature determination unit 101 to determine the uniform temperature value and standard error of each sample collected in the geological vertical section where the unconformity surface exists; then the fitting unit 102 can be used to perform linear fitting on the uniform temperature value distribution of each sample of the upper geological layer and the lower geological layer located on the unconformity surface based on the uniform temperature value and standard error of each sample. After obtaining the upper temperature fitting line and the lower temperature fitting line, the calculation unit 103 can be used to calculate the uniform temperature corresponding to the intersection point of the upper temperature fitting line and the upper layer of the unconformity surface, and calculate the uniform temperature corresponding to the intersection point of the lower temperature fitting line and the lower layer of the unconformity surface. After obtaining the uniform temperature corresponding to the two intersection points, the geothermal gradient unit 104 can be used to determine the geothermal gradient based on the upper temperature fitting line and the lower temperature fitting line; finally, the erosion amount determination unit 105 can be used to determine the erosion amount of the unconformity surface based on the difference between the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point, and the geothermal gradient, providing important reference parameters for geologists to conduct geological research and explore for oil resources.

[0116] Further optionally, the execution process of the temperature determination unit 101 may include:

[0117] Measuring the homogenization temperature of each primary fluid inclusion in each sample collected along a geological vertical section where an unconformity exists;

[0118] The average value and standard error of the homogenous temperature of each primary fluid inclusion of each sample are calculated as the homogenous temperature value and standard error of each sample.

[0119] Further optionally, the execution process of the geothermal gradient determining unit 104 may include:

[0120] Calculating the slopes of the upper temperature fitting line and the lower temperature fitting line respectively;

[0121] The inverse of the slope of the upper temperature fitting line is taken as the overlying geothermal gradient;

[0122] The inverse of the slope of the underlying temperature fitting line is taken as the underlying geothermal gradient.

[0123] Further optionally, the execution process of the above-mentioned erosion amount determination unit 105 may include:

[0124] Determine the magnitude of the uniform temperature corresponding to the upper intersection point and the uniform temperature corresponding to the lower intersection point;

[0125] If there is an overlying stratum on the unconformity surface, and the uniform temperature corresponding to the intersection point of the upper stratum is lower than the uniform temperature corresponding to the intersection point of the lower stratum, then the amount of denudation of the unconformity surface is determined to be equal to the difference between the uniform temperature corresponding to the intersection point of the upper stratum and the uniform temperature corresponding to the intersection point of the lower stratum divided by the underlying geothermal gradient;

[0126] If the uniform temperature corresponding to the upper intersection is greater than the uniform temperature corresponding to the lower intersection, the amount of erosion of the unconformity surface is determined to be equal to the difference between the uniform temperature corresponding to the lower intersection and the surface temperature divided by the overlying geothermal gradient;

[0127] If there is no overlying stratum above the unconformity surface, and the uniform temperature corresponding to the upper intersection point is lower than the uniform temperature corresponding to the lower intersection point, then the erosion amount of the unconformity surface is determined to be equal to the difference between the uniform temperature corresponding to the lower intersection point and the surface temperature divided by the underlying geothermal gradient.

[0128] Among them, the specific processing flow of each unit included in the above-mentioned erosion amount determination device can refer to the relevant introduction of the erosion amount determination method part above, and will not be repeated here.

[0129] The apparatus for determining the amount of ablation provided in the embodiment of the present application can be applied to an apparatus for determining the amount of ablation, such as a terminal: a mobile phone, a computer, etc. Optionally, Figure 5 The hardware structure diagram of the device for determining the amount of erosion is shown in FIG. Figure 5 The hardware structure of the device for determining the amount of erosion may include: at least one processor 1 , at least one communication interface 2 , at least one memory 3 and at least one communication bus 4 .

[0130] In the embodiment of the present application, the number of the processor 1 , the communication interface 2 , the memory 3 , and the communication bus 4 is at least one, and the processor 1 , the communication interface 2 , and the memory 3 communicate with each other through the communication bus 4 .

[0131] The processor 1 may be a central processing unit CPU, or an application-specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application, etc.;

[0132] The memory 3 may include a high-speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory;

[0133] The memory stores a program, and the processor can call the program stored in the memory, wherein the program is used to implement various processing flows of the aforementioned terminal in the ablation amount determination scheme.

[0134] The embodiment of the present application further provides a readable storage medium, which can store a program suitable for execution by a processor, wherein the program is used to implement various processing flows of the aforementioned terminal in the ablation amount determination scheme.

[0135] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0136] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0137] The above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the present application. Various modifications to these embodiments will be apparent to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. The various embodiments can be combined with each other. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for determining the denudation amount, characterized in that, comprising: determining the homogenization temperature value and standard error of each sample collected from a geological vertical profile with an unconformity surface; respectively performing linear fitting on the distribution of the homogenization temperature values of the samples in the upper-layer geology and lower-layer geology located at the unconformity surface based on the homogenization temperature values and standard errors of the respective samples to obtain an upper-layer temperature fitting line and a lower-layer temperature fitting line; calculating the homogenization temperature corresponding to the upper intersection point of the upper-layer temperature fitting line and the unconformity surface, and calculating the homogenization temperature corresponding to the lower intersection point of the lower-layer temperature fitting line and the unconformity surface; determining the geothermal gradient based on the upper-layer temperature fitting line and the lower-layer temperature fitting line; the geothermal gradient includes an overlying geothermal gradient and an underlying geothermal gradient; determining the denudation amount of the unconformity surface based on the difference between the homogenization temperature corresponding to the upper intersection point and the homogenization temperature corresponding to the lower intersection point, and the geothermal gradient, including: judging the magnitude of the homogenization temperature corresponding to the upper intersection point and the homogenization temperature corresponding to the lower intersection point; if there is an overlying formation above the unconformity surface and the homogenization temperature corresponding to the upper intersection point is less than the homogenization temperature corresponding to the lower intersection point, then determining that the denudation amount of the unconformity surface is equal to the difference between the homogenization temperature corresponding to the upper intersection point and the homogenization temperature corresponding to the lower intersection point divided by the underlying geothermal gradient; if the homogenization temperature corresponding to the upper intersection point is greater than the homogenization temperature corresponding to the lower intersection point, then determining that the denudation amount of the unconformity surface is equal to the difference between the homogenization temperature corresponding to the lower intersection point and the surface temperature divided by the overlying geothermal gradient; if there is no overlying formation above the unconformity surface and the homogenization temperature corresponding to the upper intersection point is less than the homogenization temperature corresponding to the lower intersection point, then determining that the denudation amount of the unconformity surface is equal to the difference between the homogenization temperature corresponding to the lower intersection point and the surface temperature divided by the underlying geothermal gradient; the calculation formula for the geothermal gradient is: ， in, is the geothermal gradient, including the overlying geothermal gradient G1 and the underlying geothermal gradient G2; is the uniform temperature value corresponding to any point on the upper temperature fitting line or the lower temperature fitting line; The uniform temperature value corresponding to any other point on the upper temperature fitting line or the lower temperature fitting line; The uniform temperature value of the upper temperature fitting line or the lower temperature fitting line The corresponding burial depth; The uniform temperature value of the upper temperature fitting line or the lower temperature fitting line The corresponding burial depth; the coordinates of the intersection of the upper temperature fitting line and the unconformity surface are (T1, h), and the coordinates of the intersection of the lower temperature fitting line and the unconformity surface are (T2, h). The uniform temperatures of the two intersections correspond to T1 and T2 respectively, and the surface temperature is Ts; when T2>T1 and there is no overlying formation above the unconformity surface, the denudation amount of the unconformity surface = (T2 - Ts) / G2; when T2<T1, assuming that the past geothermal gradient is equal to the current geothermal gradient, the denudation amount of the unconformity surface = (T2 - Ts) / G1.

2. The method for determining the denudation amount according to claim 1, characterized in that, the determining the homogenization temperature value and standard error of each sample collected from a geological vertical profile with an unconformity surface includes: measuring the homogenization temperature of each primary fluid inclusion of each sample collected from a geological vertical profile with an unconformity surface; calculating the average value and standard error of the homogenization temperatures of each primary fluid inclusion of each sample as the homogenization temperature value and standard error of each sample.

3. The method for determining the denudation amount according to claim 1, characterized in that, the determining the geothermal gradient based on the upper-layer temperature fitting line and the lower-layer temperature fitting line includes: respectively calculating the slopes of the upper-layer temperature fitting line and the lower-layer temperature fitting line; taking the reciprocal of the slope of the upper-layer temperature fitting line as the overlying geothermal gradient; taking the reciprocal of the slope of the lower-layer temperature fitting line as the underlying geothermal gradient.

4. An erosion amount determination device, characterized in that, comprising: a temperature determination unit for determining the homogeneous temperature value and standard error of each sample collected from a geological vertical profile with an unconformity surface; a fitting unit for respectively performing linear fitting on the distribution of the homogeneous temperature values of the samples in the upper geology and lower geology located at the unconformity surface based on the homogeneous temperature values and standard errors of the respective samples to obtain an upper temperature fitting line and a lower temperature fitting line; a calculation unit for calculating the homogeneous temperature corresponding to the upper intersection point of the upper temperature fitting line and the unconformity surface, and calculating the homogeneous temperature corresponding to the lower intersection point of the lower temperature fitting line and the unconformity surface; a geothermal gradient determination unit for determining the geothermal gradient based on the upper temperature fitting line and the lower temperature fitting line; the geothermal gradient includes an overlying geothermal gradient and an underlying geothermal gradient; an erosion amount determination unit for determining the erosion amount of the unconformity surface based on the difference between the homogeneous temperature corresponding to the upper intersection point and the homogeneous temperature corresponding to the lower intersection point, and the geothermal gradient, including: judging the magnitude of the homogeneous temperature corresponding to the upper intersection point and the homogeneous temperature corresponding to the lower intersection point; if there is an overlying formation above the unconformity surface and the homogeneous temperature corresponding to the upper intersection point is less than the homogeneous temperature corresponding to the lower intersection point, then determining that the erosion amount of the unconformity surface is equal to the difference between the homogeneous temperature corresponding to the upper intersection point and the homogeneous temperature corresponding to the lower intersection point divided by the underlying geothermal gradient; if the homogeneous temperature corresponding to the upper intersection point is greater than the homogeneous temperature corresponding to the lower intersection point, then determining that the erosion amount of the unconformity surface is equal to the difference between the homogeneous temperature corresponding to the lower intersection point and the surface temperature divided by the overlying geothermal gradient; if there is no overlying formation above the unconformity surface and the homogeneous temperature corresponding to the upper intersection point is less than the homogeneous temperature corresponding to the lower intersection point, then determining that the erosion amount of the unconformity surface is equal to the difference between the homogeneous temperature corresponding to the lower intersection point and the surface temperature divided by the underlying geothermal gradient; the calculation formula of the geothermal gradient is: ， in, is the geothermal gradient, including the overlying geothermal gradient G1 and the underlying geothermal gradient G2; is the uniform temperature value corresponding to any point on the upper temperature fitting line or the lower temperature fitting line, The uniform temperature value corresponding to any other point on the upper temperature fitting line or the lower temperature fitting line; The uniform temperature value of the upper temperature fitting line or the lower temperature fitting line The corresponding burial depth; The uniform temperature value of the upper temperature fitting line or the lower temperature fitting line The corresponding burial depth; the intersection coordinates of the upper temperature fitting line and the unconformity surface are (T1, h), the intersection coordinates of the lower temperature fitting line and the unconformity surface are (T2, h), the homogeneous temperatures of the two intersection points respectively correspond to T1 and T2, and the surface temperature is Ts; when T2 > T1 and there is no overlying formation above the unconformity surface, the erosion amount of the unconformity surface = (T2 - Ts) / G2; when T2 < T1, assuming that the past geothermal gradient is equal to the current geothermal gradient, the erosion amount of the unconformity surface = (T2 - Ts) / G1.

5. The erosion amount determination device according to claim 4, characterized in that, the execution process of the temperature determination unit includes: measuring the homogeneous temperature of each primary fluid inclusion of each sample collected from a geological vertical profile with an unconformity surface; calculating the average value and standard error of the homogeneous temperatures of each primary fluid inclusion of each sample as the homogeneous temperature value and standard error of each sample.

6. The erosion amount determination device according to claim 4, characterized in that, The execution process of the geothermal gradient determination unit includes: Calculating the slopes of the upper temperature fitting line and the lower temperature fitting line respectively; The inverse of the slope of the upper temperature fitting line is taken as the overlying geothermal gradient; The inverse of the slope of the underlying temperature fitting line is taken as the underlying geothermal gradient.

7. A device for determining the amount of ablation, It is characterized in that include: one or more processors, and memory; The memory stores computer-readable instructions, which, when executed by the one or more processors, implement the steps of the method for determining the amount of ablation as claimed in any one of claims 1 to 3.

8. A readable storage medium, Features: The readable storage medium stores computer-readable instructions, and when the computer-readable instructions are executed by one or more processors, the one or more processors implement the steps of the method for determining the amount of erosion as claimed in any one of claims 1 to 3.

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