39 results about "Denudation" patented technology

The invention provides a method for quantitatively evaluating the storage condition of magma hydrothermal deposit based on thermochronology, which comprises the following steps: determining a sample sampling point based on field geological survey, collecting typical samples, picking out zircon and apatite monominerals, and preparing a U-Pb isotope test target and a fission track test optical slide; carrying out fission track dating on the zircon and the apatite to measure the U-Pb isotope age and (U-Th) / He isotope age of the zircon and the apatite; thermal history evolution process simulation is carried out by integrating test data, and finally, the deposit preservation condition is quantitatively calculated and evaluated according to simulation. According to the method, a scientific quantitative full-chain research scheme is provided for augmentation, denudation and thermal history evolution research of the magma hydrothermal deposit, and the technical problem of quantitative evaluation of the storage condition of the magma hydrothermal deposit is solved.

The invention relates to the technical field of petroleum geophysical exploration, and provides a reservoir forming period hydrocarbon source rock paleo-pressure quantitative prediction method and system, and the method comprises the steps: solving the stratum denudation thickness based on a mudstone compaction curve extrapolation method; obtaining the thickness of a terrain skeleton, constructing a binary function based on the stratum denudation thickness and the thickness of the terrain skeleton to analyze an approximate solution, and inverting the stratum paleo-burial depth for the logging paleo-burial depth; obtaining the total porosity of the hydrocarbon source rock according to the stratum paleo-burial depth; quantitatively predicting the single well paleo pressure of the hydrocarbon source rock according to the total porosity; the multi-well paleo pressure is obtained based on the single well paleo pressure, interpolation is performed according to the multi-well paleo pressure to obtain the plane paleo pressure, in this way, the accurate well logging compaction trend line is established, the accuracy and reliability of the prediction result are improved by considering the influence of the shear wave speed, and therefore the accuracy of predicting the paleo pressure of the hydrocarbon source rock in the reservoir forming period is improved.

The embodiment of the invention discloses a stratum denudation data determination method and device, equipment and a medium. The method comprises the following steps: determining a target layer, a Shanghai generic surface and a Shanghai generic surface of which stratum denudation data needs to be calculated; wherein the upper marine flooding surface is located above the top surface of the target layer and closest to the top surface of the target layer, and the lower marine flooding surface is located below the bottom surface of the target layer and closest to the bottom surface of the target layer; determining denudation points according to the target layer and the underlying stratum; wherein the underlying stratum is a stratum located between the bottom surface of a target stratum and a lower sea flooding surface; and determining the stratum denudation amount according to the thickness between an upper line extending upwards in the stratum direction from the denudation point and the bottom surface of the target stratum. According to the scheme, the stratum denudation amount can be determined more accurately and quickly according to the stratum characteristics and the seismic data which are easy to obtain, higher practicability is achieved, and basic data are provided for later-stage structural analysis, hydrocarbon source rock evolution, oil and gas accumulation condition analysis and the like.

The invention discloses a gas content prediction method and device, electronic equipment and a medium. The method comprises the following steps: establishing a rock physical model, and inverting model parameters through pre-stack AVO; on the basis of a rock physical model, TOC and porosity are calculated through model parameters; the formation pressure is predicted, and the gas content is obtained through TOC, porosity and formation pressure fitting. According to the method, the influence of formation pressure is considered, the method is suitable for shale gas dissipation caused by formation exposure, denudation, structural fracture and the like, the prediction result precision is remarkably improved, and the method better conforms to the actual underground geological condition.

The invention belongs to the technical field of geology, and discloses a regional hot bump identification and reconstruction method based on a stretching structure background. Through integration of time-temperature inversion of multi-thermal chronology constraint, main trace element and isotope geochemical analysis and structural evolution modeling, a path from deep mantle thinning, magma source area tracing and thermal history evolution to shallow earth crust cooling can be realized, and omnibearing description and quantitative recovery of regional thermal heave are realized. Based on a multi-temperature-stage coupling inversion technology, the denudation rate, the lifting height and the cooling time can be quantitatively evaluated; based on accurate thermal history reconstruction and thermal rise identification, the thermal maturity of high-quality hydrocarbon source rocks can be effectively predicted, and area selection and trap positioning of oil and gas reservoirs are optimized, so that the success rate and economic benefits of oil and gas exploration are remarkably improved, and the method has scientific research and industrialization application values.

A large-scale denudation depth thematic mapping method, which includes: creating a rule for arranging field work point and field work route, a sampling rule, a field observation and recording rule and a mineral processing rule of a research area. Analyzing a target mineral selected at each field work point by using a thermochronology research method and inputting analysis data into a Low-T Thermo software to perform thermal evolution history modeling and denudation depth calculation, so as to obtain a denudation depth at each of the field work points. Drawing a denudation depth isopleth map of the research area according to the denudation depth at each of the field work points; and setting a large-scale standard regional geological map of the research area as a base map. Superimposing the base map and the denudation depth isopleth map to obtain a denudation depth map of the research area.

The application discloses a stratum denudation amount recovery method and device, equipment and medium, and belongs to the technical field of petroleum geophysical exploration processing. The application corrects the trend surface method by using the acoustic travel time method, obtains the original stratum thickness of a target region, and realizes recovery of the stratum denudation amount. The application also provides a device, computer equipment and computer readable storage medium for realizing the above method. The application can accurately recover the stratum denudation amount and can be applied to petroleum geophysical exploration and oil and gas resource evaluation.

The invention belongs to the technical field of seismic data comprehensive interpretation, and particularly discloses a hydrocarbon source rock hydrocarbon generation potential evaluation method which comprises the following steps: S1, establishing a stratigraphic framework; s2, according to the denudation relationship, selecting a corresponding method to recover the denudation thickness, and adding the denudation thickness with the existing residual stratum topographic structure to obtain an ancient landform after denudation thickness recovery; s3, performing statistical fitting to obtain a relationship between depth and porosity, performing compaction recovery, and superimposing the topographic structure in the deposition period to obtain the ancient landform of the hydrocarbon source rock in the research area in the deposition period; s4, the hydrocarbon generation starting depth of the target type hydrocarbon source rock is obtained through statistics, and the range, larger than the hydrocarbon generation starting depth of the target type hydrocarbon source rock, in the ancient landform, obtained in the step S3, of the hydrocarbon source rock in the research area in the deposition period is the hydrocarbon generation stove of the target type hydrocarbon source rock and is the area where the hydrocarbon generation potential of the target type hydrocarbon source rock is large. According to the method, the recovery precision of the ancient landform is improved, and the accuracy of oil and gas reservoir exploration resource information is guaranteed. The method is suitable for oil-gas reservoir exploration and development.

The invention discloses a method for determining the longitudinal cut-through capability of a strike-slip fault zone, and the method comprises the steps: building a strike-slip fault zone cut-through capability index after precisely reading the thickness of each component of a layer, the total thickness of a stratum and the longitudinal cut-through depth of the strike-slip fault zone, building an evaluation standard of the strike-slip fault zone for the longitudinal cut-through capability of the stratum, and determining the longitudinal cut-through capability of the strike-slip fault zone. A space change mode of the longitudinal cut-through capability of the strike-slip fault zone is determined, a mathematical method of the longitudinal cut-through capability of the strike-slip fault zone to the stratum is accurately determined, and the difference of the longitudinal cut-through capability of different parts of the strike-slip fault zone can be objectively and quantitatively evaluated. The condition that the stratum thickness is obviously different in the same area due to the difference of the original stratum deposition degree or the difference of the later weathering denudation degree in the same area and different strike-slip fault zones in the same area and different parts of the same strike-slip fault zone can be reasonably avoided; and therefore, the defect that the longitudinal cut-through capability of the strike-slip fault zone cannot be evaluated according to the standard in a unified manner can be overcome.

The invention relates to a method and device for recovering the uplift denudation amount of a petroliferous basin, equipment and a medium, and relates to the technical field of geological analys.The method comprises the steps that a reference well is selected in a research area, and the uplift denudation amount delta H0 and the time-depth conversion relation of a target layer of the reference well are obtained; a standard layer is selected, and the marker bed three-dimensional structure top interface depth Tn is reconstructed according to the time-depth conversion relation of the reference well; and calculating the uplift denudation amount Xn of the target stratum based on the uplift denudation amount delta H0 of the reference well and the marker bed paleostructural plane. According to the recovery method provided by the invention, the three-dimensional continuous space of the petroliferous basin scale is modeled by virtue of the matching of the reference well and the standard layer, so that the accurate recovery of the multi-curtain uplift denudation thickness three-dimensional space is realized, and a scientific basis is provided for the exploration and development of oil and gas.

The invention relates to a main reservoir-forming period sand body conduction coefficient logging and earthquake combined construction method and system. The main reservoir-forming period sand body conduction coefficient logging and earthquake combined construction method comprises the following steps that the plane stratum denudation amount is solved based on an obtained acoustic curve; calculating the stratum burial depth based on the binary function analysis approximate solution and the plane stratum denudation amount; considering diagenesis, and calculating the total plane porosity based on the stratum burial depth; calculating the residual paleopressure of the sandstone reservoir based on the total plane porosity; calculating an earthquake inclination angle body; and constructing a main reservoir forming period sand body conduction coefficient based on the seismic dip angle body and the stratum burial depth. On the basis of combination of logging paleo-burial depth inversion and sandstone reservoir paleo-porosity recovery, the main reservoir-forming period sand body conduction coefficient logging and earthquake combined construction method is constructed, the main reservoir-forming period sandstone conduction coefficient can be accurately and quantitatively predicted, and the method has important significance on research of an oil-gas rock conduction system.

The application discloses a method for determining the distribution range of a closed brine formation capable of storing CO2 underground, comprising the following steps: determining the development horizon and thickness of the brine formation according to drilling data; determining the planar distribution range of the brine formation capable of storing CO2 according to the development horizon and thickness in combination with seismic data; determining the distribution range of the open brine formation capable of exchanging with surface water in the denudation area; determining the distribution range of the open brine formation capable of exchanging with surface water in the central fault development area of the basin; and subtracting the distribution range of the two open brine formations from the planar distribution range of the brine formation capable of storing CO2 to obtain the distribution range of the closed brine formation. The method has the beneficial effect that the planar distribution range of the brine formation is determined first, then the interference range is removed, and finally the distribution range of the brine formation capable of storing CO2 is obtained, thereby providing a quick solution for determining the target area of the brine formation when carrying out the CO2 geological storage research in the sedimentary basin, and improving the work efficiency.

The invention discloses a stratum difference denudation amount recovery method, system and equipment and a medium, and belongs to the technical field of stratum denudation amount recovery. The recovery method comprises the following steps: analyzing seismic data, identifying well positions which are not denudated in a research area, and then performing stratigraphic division by combining a logging curve to determine a standard well; stratigraphic comparison and denudation surface identification are carried out on the standard well and other wells in the research area, and stratums which are not denudated under the denudation surfaces of the denudation wells are divided; the denudation thickness of the single well is obtained according to the stratum thickness difference value between the denudation well and the standard well; the denudation thickness of all single wells in the research area is counted, and a denudation thickness contour map is drawn. According to the method, seismic data and the logging curve can be combined, the denudation thickness of the denudation well is counted with the idea of sedimentary cycle and equal-thickness slicing as the core and stratigraphic contrast as the basis, and the denudation thickness contour map is drawn.

The application discloses a buried volcanic mechanism phase zone denudation amount recovery method and belongs to the technical field of sedimentary basin denudation amount recovery. The method comprises six steps of establishing a denudation amount recovery foundation database, identifying a buried volcanic mechanism and dividing internal phase zones, distinguishing different phase zone denudation recovery methods, determining a regional denudation reference amount, near-source phase zone and middle-source phase zone denudation amount recovery and far-source phase zone denudation amount recovery. According to the morphological characteristics and weathering denudation differences of different phase zones of the buried volcanic mechanism, the method determines the denudation amount recovery methods of the near-source phase zone, the middle-source phase zone and the far-source phase zone, respectively, avoids the error caused by uniformly assigning the regional denudation amount to the whole volcanic mechanism, realizes the differentiated recovery of the denudation amounts of different phase zones of the buried volcanic mechanism, improves the rationality and the quantitative degree of the denudation amount recovery of the buried volcanic mechanism, and thus has good application value for deep-ultra deep oil and gas exploration.

The invention relates to the technical field of applied geology, and discloses a coverage area rock augmentation height quantitative recovery method based on big data, which comprises the following steps: S1, obtaining a clastic zircon sample in a sedimentary basin of a research area, measuring U-Pb age and trace element data of the clastic zircon sample, and constructing a multi-dimensional clastic zircon database; s2, screening the data in the step S1, and removing Th / Ult; 0.1, Legt; the zircon data is 1 ppm, and the zircon from the S-type granite source is excluded. According to the coverage area rock augmentation height quantitative recovery method based on the big data, a technical chain of earth crust thickness inversion-paleo-elevation reconstruction is constructed based on multi-dimensional chipping zircon geochemical data, the denudation preservation state and development potential of mineral resources can be quantitatively analyzed, the method has universal guiding significance for deep prospecting, and the method is suitable for large-scale popularization and application. In the aspects of resource economy evaluation and exploration decision making, direct correlation analysis of denudation amount and buried depth data is realized.

The invention relates to a tectonic evolution method and device for recovering denudation strata through trend-structure extrapolation of an extended fractured basin, and the method comprises the steps: collecting geology, earthquake and logging information of the extended fractured basin, and building a three-dimensional geologic model of the extended fractured basin; carrying out horizon interpretation on a two-dimensional earthquake and a three-dimensional earthquake in a research area through seismic event stratum tracking by combining seismic reflection characteristics and drilling data on the basis of a synthetic seismic record calibration stratum; carrying out unconformity interface and fracture interpretation on the stretching fault basin, establishing a construction model, dividing stratums corresponding to the unconformity interface of the stretching fault basin, and determining formation time, distribution and evolution of the stratums; establishing a typical structure style, and selecting a typical profile; the denudated syngenetic fault and / or boundary fault and the stratum are / is recovered; and extrapolating and recovering the denudation fault and the stratum through a trend-structure external technology, and recovering a structure evolution history diagram. According to the method, the denudated stratum can be reliably recovered.

The present application relates to a kind of construction methods suitable for denudation hilly land tunnel, comprising the following steps: making roof water interception gutter, layered excavation side slope from top to bottom, open cut excavation, making entrance large pipe shed support;Making tunnel body long pipe shed support, making advance small guide pipe support, burying monitoring survey point, taking advance geological forecast and geological verification work, tunnel excavation;Initial support, radial grouting, curtain grouting, laying waterproof layer, secondary lining, construction ditch cable trough, tunnel pavement.The present application carries out reinforcement treatment to surrounding rock by radial grouting and curtain grouting water plugging measures, ensures smooth passing through fault fracture zone;When construction through granite residual soil and completely weathered, strong weathered rock, tectonic fissure, rock broken section, do advance support well, control collapse, ensure construction safety;When construction, take advance geological forecast and geological verification work, and strengthen surrounding rock metamorphic monitoring, overcome the harm brought by adverse geological conditions.

The invention discloses a method, a device, equipment and a medium for representing a sand body storage coefficient in a reservoir forming period by an earthquake, and relates to the technical field of geophysical exploration of petroleum, the stratum denudation thickness is solved by a mudstone compaction curve extrapolation method, and a binary function paleo-porosity calculation formula is constructed under the condition of considering the burial time and burial depth of the stratum; and inversing to obtain the ancient burial depth of the logging. A sandstone reservoir decreasing and increasing model is constructed under the diagenesis effect, and the method for representing the storage coefficient of the sand body in the reservoir forming period by the earthquake is provided based on sandstone reservoir pre-stack thickness prediction. The method can accurately predict the storage coefficient of the sandstone in the reservoir forming period, predicts the thickness and porosity of the sandstone reservoir before stacking, and is of great significance to research of an oil-gas rock transportation system.

The present application belongs to the technical field of seismic data comprehensive interpretation, and specifically discloses a method for evaluating hydrocarbon source rock hydrocarbon generation potential, comprising the following steps: S1, establishing a stratigraphic framework; S2, selecting a corresponding method according to the denudation relationship to restore the denudation thickness, adding the present residual stratigraphic structure to obtain the paleogeomorphology after the denudation thickness is restored; S3, obtaining the relationship between the depth and the porosity by statistical fitting, performing compaction recovery, and then superimposing the stratigraphic structure during the sedimentary period to obtain the paleogeomorphology of the hydrocarbon source rock in the study area during the sedimentary period; and S4, obtaining the depth at which the target type hydrocarbon source rock starts to generate hydrocarbon, and the range greater than the depth at which the target type hydrocarbon source rock starts to generate hydrocarbon in the paleogeomorphology of the hydrocarbon source rock in the study area during the sedimentary period obtained in step S3 is the hydrocarbon generation kitchen of the target type hydrocarbon source rock, which is a region with greater hydrocarbon generation potential of the target type hydrocarbon source rock. The present application improves the recovery accuracy of the paleogeomorphology and guarantees the accuracy of the oil and gas reservoir exploration resource information. The present application is suitable for oil and gas reservoir exploration and development.

The invention discloses an ancient landform restoration method and a storage medium. The method comprises the following steps: S1, acquiring data of a stratum top surface and a stratum bottom surface of a to-be-restored area; s2, acquiring a convergence surface and leveling the convergence surface to obtain data of the recovered stratum top surface and the recovered stratum bottom surface; and S3, determining a denudation area range according to the recovered data of the stratum top surface and the stratum bottom surface, and completing ancient landform recovery according to the denudation area range. According to the method, a more accurate denudation region is obtained through leveling treatment of the convergence surface, so that the error between ancient landform recovery and essence is reduced, and the ancient landform recovery is more reasonable.

The invention relates to the technical field of mineral resource exploration, in particular to a basic-super basic region prospecting method. The method comprises the following steps: determining test analysis elements, screening out a working area, high-resolution remote sensing data and an image extraction water system, drawing a water system distribution diagram, arranging sampling points of a primary water system or a micro-water system catchment water area, and collecting medium-coarse sand or rock debris samples according to a rock exposure condition and a weathering denudation degree; the method comprises the following steps: carrying out test analysis on collected samples, carrying out parameter statistics on results, determining main metallogenic elements and enrichment distribution characteristics of the main metallogenic elements, compiling geochemical measurement series maps, carrying out anomaly ranking, preferably delineating comprehensive anomalies, carrying out anomaly verification through scribed line chemical sample test and polished section identification, and finding out geologic bodies causing anomalies. And determining the scale and spatial distribution characteristics, and delineating a prospecting target area in combination with the metallogenic geological background of the working area. The mineral exploration range can be narrowed, the cost input is reduced, and the geological exploration efficiency is improved.

The invention provides a hydrocarbon source rock thickness prediction method. The method comprises the steps that target observation seismic data, logging data and auxiliary geological data in a research area are acquired; performing spectrum analysis on the target observation seismic data to obtain a near-well seismic channel spectrum, and performing TOC curve extraction on the logging data to obtain a logging TOC curve; constructing a TOC-seismic frequency response relation library according to the near-well seismic channel frequency spectrum and the logging TOC curve; dividing a research area into different sedimentary facies areas, calculating hydrocarbon source rock thickness at each position and generating a prior thickness distribution model; using the target observation seismic data, the logging data, the auxiliary geological data and the TOC-seismic frequency response relation library to continuously iteratively update to continuously reduce the target function to obtain an optimal thickness prediction model and output the hydrocarbon source rock prediction thickness; and carrying out compaction correction treatment and denudation recovery treatment on the predicted thickness of the hydrocarbon source rock to obtain the actual effective thickness of the hydrocarbon source rock. The method can more accurately predict the thickness of the hydrocarbon source rock.

The invention discloses a stratum denudation thickness calculation method, which comprises the following steps: acquiring different-depth ground temperature data of a target stratum through a thermal advection coupling ground temperature field inversion model, extracting paleo-temperature data of a fluid inclusion in a rock core sample by using a fluid inclusion paleo-temperature scale denudation model, and determining paleo-ground temperature gradient change characteristics; processing mudstone porosity data by adopting a mudstone compaction curve dynamic fitting algorithm, establishing a dynamic relationship between the porosity and the buried depth, and optimizing a compaction curve; the data are input into a three-dimensional stratum denudation modeling analysis platform, a target stratum three-dimensional space structure model is constructed, modeling parameters are adjusted in combination with ground temperature gradient change and ancient ground temperature evolution characteristics, and the stratum denudation process is simulated; and finally, according to a simulation result and mudstone compaction degree parameters, calculating denudation thicknesses of different positions of the target stratum. According to the method, through cooperative application of multiple models and an algorithm, the accuracy of stratum denudation thickness calculation is improved.

The invention relates to a sandstone reservoir porosity depth lower limit prediction method, device, equipment and medium, and relates to the field of oil and gas exploration and development, and the method comprises the steps: determining the tectonic uplift denudation amount of a main reservoir forming period of oil and gas reservoir forming in a target research area; obtaining the lower limit of the porosity depth of the sandstone reservoir by utilizing the constructed uplift denudation amount and by means of a coupling model of uplift denudation amount x-sandstone porosity critical burial depth y; wherein the coupling model of the uplift denudation amount x-sandstone porosity critical burial depth y is as follows: y = ax < 2 > + bx + c, in the formula, a is a denudation cumulative effect strength coefficient, b is a denudation dominant pore reduction effect coefficient, and c is a constant term. According to the prediction method provided by the invention, the specific main reservoir forming period is selected in the research area, and the coupling model of the denudation amount x-sandstone porosity critical burial depth y is combined, so that the critical depth corresponding to the economic exploitation lower limit of which the porosity is greater than or equal to 8% can be accurately determined, and efficient and accurate prediction of the reservoir porosity physical property depth lower limit is realized.

The present application relates to geological exploration evaluation and geological dating technical field, disclose a kind of carbonate rock U-Pb dating detection method, comprising: to be tested sample is carried out denudation test, determine the denudation laser first spot size suitable for to be tested sample;The first laser frequency when the denudation laser of to be tested sample is first spot size and the depth-width ratio of the denudation pit of to be tested sample is consistent with standard depth-width ratio is calculated;Test sequence is set, and to be tested sample is tested;Determine the age data and initial lead composition of the diagenetic mineral of to be tested sample.The present application is suitable for the way that carbonate rock U-Pb dating detection is determined by laser parameter first, then carries out U-Pb dating detection to carbonate rock, avoid the age deviation caused by the depth-width ratio of sample and standard sample denudation pit inconsistency, also can set different size spot and denudation frequency to standard sample and unknown sample in same sequence, both ensure that the depth-width ratio of denudation pit is consistent, also effectively save standard sample.

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.

The invention provides a method and application for evaluating thermal evolution of Hulu series hydrocarbon source rocks by utilizing a ground temperature gradient, and belongs to the technical field of geological analysis, and the method comprises the following steps: S1, determining residual stratum thickness distribution and stratum accumulated thickness of each period; s2, determining a drilling thermal evolution history; s3, in combination with the ground temperature gradient in the tectonic period, the denudation amount, calculated in the step S1, of the stratum in each period and the drilling thermal evolution history determined in the step S2, evaluating the thermal evolution condition of the Kuhu hydrocarbon source rocks by adopting the hydrocarbon source rock hydrocarbon generation chart; the invention further provides application of the method in oil and gas resource exploration. Compared with the prior art, the invention provides a method for constraining and evaluating the thermal evolution stage of the source rock by using reliable stratum thickness, relatively reliable denudation thickness, paleo-ground temperature gradient and change thereof, and solves the problem of lack of reliable temperature scale in identification of the maturity of the paleo-life source rock under macroscopic constraint. And the analyzed maturity and evolution stage credibility are higher.

The invention provides a quantitative evaluation method for contribution of coal-series hydrocarbon source rock exhaust to a gas reservoir under a lifting denudation background, and the quantitative evaluation method comprises the following steps: measuring the methane content and the methane carbon isotope ratio of the coal-series hydrocarbon source rock exhaust; respectively determining the methane content and the methane carbon isotope ratio of the original gas reservoir and the current gas reservoir of the target gas reservoir; and according to the balance principle of methane carbon isotopes in the gas reservoir, establishing a calculation formula of the contribution of the coal hydrocarbon source rock exhaust to the gas reservoir based on the methane content and the carbon isotope mixing ratio, and calculating to obtain the contribution ratio of the hydrocarbon source rock exhaust to the gas reservoir. According to the quantitative evaluation method provided by the invention, the contribution proportion of coal series hydrocarbon source rock exhaust to the gas reservoir under the lifting denudation background is solved based on a material balance principle, quantitative evaluation of gas reservoir contribution is realized, scientific exhaust parameters are provided for large-scale gas gathering basin resource evaluation under the lifting denudation effect, and the method is suitable for large-scale gas gathering basin resource evaluation. The method has important application value in natural gas geology research and exploration.

The invention discloses a denudation method, a denudation device, denudation equipment and a medium in a structural physical simulation experiment. The denudation method in the tectonic physical simulation experiment comprises the steps that an initial experiment model is determined according to geological information of a target tectonic area, and tectonic deformation parameters are determined according to the geological information; determining a three-dimensional elevation map of the target tectonic area according to the geological information; determining denudation parameters according to the three-dimensional elevation map; according to the denudation parameters and the tectonic deformation parameters, the initial experiment model is experimented, and a final experiment result is obtained. According to the scheme, the tectonic deformation parameters are determined according to the denudation parameters and the geological information determined according to the three-dimensional elevation map, automatic denudation is performed on the initial experiment model of the target tectonic area in the denudation experiment process, the denudation experiment result is closer to the finally expected experiment result, and the efficiency and the accuracy of the tectonic physical simulation experiment are improved.

The application discloses an anticline structure three-dimensional modeling method based on a plane geological map, belongs to the geological field, and is used for solving the problem that the spatial form of an anticline can be presented only by collecting data and conducting field investigation manually for a long time, the method is time-consuming and laborious, and the topographic features on the anticline cannot be presented one by one. The anticline structure three-dimensional modeling method specifically comprises the following steps: grid data processing, intelligent determination of anticline folds, entity space subdivision and modeling, and calculation of denudation amount. The application can quickly and accurately present the spatial form of the anticline structure and the topographic features on the anticline.