36 results about "Fault block" patented technology

The invention relates to a prediction method for a small fault of a complex fault block oil reservoir, which calculates a structural gradient tensor seismic body, reflects the characteristics of curvature change of a seismic wave event structure, can finely identify the small fluctuation of the structure caused by the dislocation of the seismic event, has a good identification capability for small and medium faults, and can be used for predicting the small fault of the complex fault block oil reservoir. The method comprises the following steps: firstly, constructing a gradient tensor seismic body, then carrying out curvature change gradient attribute calculation on the constructed gradient tensor seismic body, reflecting the change gradients of the constructed curvature in X and Y directions in the data body and highlighting the discontinuity of an event, finally calculating a curvature change gradient variance body of multi-channel seismic data, and completing minor fault tracking according to the variance value by extracting a horizontal slice of a target layer; a visual basis is provided for interpretation of the small fault in the complex fault block oil reservoir, and the problem of complex fault block oil reservoir structure interpretation is solved.

The invention provides a time-depth conversion method and device for a hidden structure of a low-exploration-degree foreland thrust zone, and belongs to the technical field of geological exploration. The method comprises the steps of obtaining speed change characteristics of a research area; establishing a geologic structure model by using the seismic interpretation horizon and fault data of the time domain; converting the geologic structure model into an interval velocity model through an interval control breaking block velocity assignment method; establishing virtual well control points in the research area, and extracting an interval velocity curve at each virtual well control point from the interval velocity model; converting the interval velocity curve at the virtual well control point into an average velocity curve; constructing a three-dimensional average velocity body by using a layer control breaking block virtual well control point spatial interpolation method; and performing time-depth conversion on the target layer. The variable-speed mapping is performed based on the time-depth conversion method realized by the invention, and through the obtained depth domain structure map, the identification of the hidden structure of the low-exploration-degree foreland thrust zone can be realized, and reliable depth data is provided for fine description of entrapment.

The application provides a method for improving oil recovery by CO2 huff and puff after fracturing, which comprises the following steps: step 1, establishing a CO2 huff and puff model; step 2, determining a reasonable fracture length according to a geological condition; step 3, simulating a fracturing fracture parameter under the reasonable fracture length according to the geological condition and a construction condition; step 4, optimizing a CO2 huff and puff round and a CO2 huff and puff amount; and step 5, carrying out a field block application and implementing the CO2 huff and puff. The method for improving oil recovery by CO2 huff and puff after fracturing adopts a numerical simulation means to determine construction information such as a reasonable fracture length and a CO2 huff and puff amount, provides support for improving oil production of small fault blocks and small sand bodies, and improves the oil recovery effect of the small fault blocks and the small sand bodies by means of the combination of artificial fracturing and CO2 huff and puff.

The present invention relates to a method, device, medium and equipment for predicting the recovery rate of an offshore thin interbedded sandstone reservoir. The method comprises the following steps: determining whether the offshore sandstone reservoir is a thin interbedded sandstone reservoir; determining an interlayer interference correction coefficient E of the offshore sandstone reservoir based on the Lorentz coefficient; i ; Based on the density of small fault blocks and well pattern density, determine the fault block influence coefficient E f ; Determine the sand body correction coefficient E based on the well spacing and the median sand body size s ; Based on the interlayer interference correction coefficient E of offshore sandstone reservoirs i , block influence coefficient E f , sand body correction coefficient E s , determine the comprehensive calculation formula of recovery factor E R The prediction method of the present invention avoids the uncertainty of reservoir numerical simulation prediction caused by unclear reservoir knowledge, as well as the problems of complex numerical simulation process, high cost, long cycle, etc.

The invention discloses a horizontal well fracturing process for a shale oil directional well. The method comprises the following steps that S1, according to geological and engineering data of the fault block type shale oil reservoir, in combination with crack parameters of a block early-stage fractured well, three-dimensional layering and clustering and fracturing process main body parameters of a directional well are determined; s2, injecting an acid solution into the reservoir in a large-displacement manner to perform acid pretreatment; s3, low-viscosity fracturing fluid injection is switched, and the displacement is rapidly increased; s4, according to reverse design, different construction pressure windows serve as the core, a three-section type pressure control and displacement adjusting pressure stabilizing sand adding mode is adopted, and single-layer fracturing sand adding is completed; and S5, according to the steps, fracturing sand adding of the remaining interval of the single well is completed. The method has the advantages that the fracturing transformation seam length of the shale oil directional well is greatly increased, the seam net supporting effect and the seam net seam control reserve of the directional well are improved, the testing yield after fracturing is high, the stable production time is long, and high-benefit development of the directional well in a complex structure area is achieved.

The invention discloses a complex fault block geothermal field earth heat flow analysis method and related equipment, relates to the field of geothermal development, and mainly aims to solve the problem that a more accurate earth heat flow calculation method is lacked at present. The method comprises the steps that a radioactive heat generation rate formula is constructed based on radioactive elements of a target area, and the radioactive heat generation rate formula is used for determining radioactive heat generation data; based on the bed rock burial depth form of the target area, a thermal conductivity and burial depth relation graph is constructed, and the thermal conductivity and burial depth relation graph is used for determining deep conduction heat; and determining an earth heat flow value of the target area based on the radioactive heat generation data and the deep conduction heat. The method is used for the complex fault block geothermal field earth heat flow analysis process.

The application provides a method for determining the oil-water interface of a fault block reservoir based on the water breakthrough time of an oil well, which comprises the following steps: step 1, obtaining reservoir basic parameters; step 2, obtaining the properties of crude oil in the reservoir; step 3, obtaining oil well data; step 4, calculating the depth of the oil-water interface and determining the oil-water interface of the fault block reservoir. The method for determining the oil-water interface of a fault block reservoir based on the water breakthrough time of an oil well has the advantages that the oil-water interface is determined based on the water breakthrough time of the oil well, the required parameters are easy to obtain, the calculation is simple, fast and convenient, and the method has good guiding significance for the development scheme compilation, especially for a newly discovered reservoir, and has a wide application prospect.

The invention belongs to the technical field of oil and gas exploration and development, and relates to a complex fault block area ancient landform recovery method and system based on structural back-stripping, and the method comprises the steps: obtaining a structural map of a to-be-recovered target layer, recognizing faults in the structural map, and carrying out the sequential numbering of the faults according to a set direction, and obtaining a numbered structural map; recovering the vertical fault displacement of each fault according to the calculated vertical fault displacement breaking block of each fault in the numbering structure diagram, and recovering the horizontal fault displacement of each fault according to the measured horizontal fault displacement segmentation block of each fault in the numbering structure diagram; and setting a reference surface, respectively calculating a distance TR from the top surface structure map after fault displacement recovery to the reference surface and a distance BR from the bottom surface structure map after fault displacement recovery to the reference surface, and subtracting the distance TR from the distance BR to obtain a compacted ancient landform curved surface. The method quantitatively recovers the ancient landform of the target stratum in the deposition period, and can effectively know the prediction of the deposition system and the prediction of the hydrocarbon generation center.

The present invention provides a method for comprehensively determining the causes of fault seismic reflection blank zones using a geological-seismic approach, comprising: step 1, comparative analysis of seismic data collected from different periods and using different acquisition methods within a study area; step 2, theoretical analysis of the causes of fault seismic reflection blank zones; step 3, analysis of the fault structure and geological characteristics of the fault cementation-filled zone; step 4, forward modeling to demonstrate the influence of the fault cementation-filled zone on fault reflection characteristics; step 5, dialectical analysis of the relationship between geological phenomena and fault seismic reflection characteristics; and step 6, based on the above analysis, establishing a geological-seismic model to determine the causes of fault seismic reflection blank zones, determine interpretation schemes for such faults, and guide well placement. This method for comprehensively determining the causes of fault seismic reflection blank zones provides valuable support for the detailed characterization of narrow reservoir traps in complex fault blocks, facilitating further exploration of oil and gas potential.

The invention discloses a method and device for quantitatively determining the damage effect of fracture on closure of a cover layer, and relates to the field of oil and gas field exploration, and the method comprises the steps: obtaining petroleum seismic exploration data of a to-be-predicted region; according to the petroleum seismic exploration data of the to-be-predicted area, determining a fault position information set which has a destructive effect on the cover layer after reservoir formation; constructing a three-dimensional fault and cover layer model, and coupling the three-dimensional fault and the cover layer model according to the position information of the damaged fault to obtain a cover layer and fault coupling structure model; based on the cover layer and fault coupling structure model, obtaining a cover layer damage index of the to-be-predicted region; and according to the cap layer damage index of the to-be-predicted area, determining the damage degree of the fracture in the to-be-predicted area on the cap layer sealing performance. According to the method, high-precision quantitative evaluation of the destructive effect of fracture on the closure of the cover layer is realized, the risk of cover layer evaluation in oil and gas exploration and development is effectively reduced, the accuracy of fault block oil and gas reservoir evaluation is improved, and powerful support is provided for formulation of a subsequent development strategy of an oil and gas field.

This invention discloses a method, system, electronic device, and computer-readable storage medium for evaluating the sidetracking potential of different types of reservoirs in complex fault blocks. The method includes: determining the reservoir type; selecting evaluation indicators affecting the sidetracking potential of different reservoir types; establishing the weights of each evaluation indicator; determining the distribution of evaluation levels and the corresponding evaluation classification standards for each evaluation indicator in each evaluation level; establishing an unknown single-indicator measurement function; statistically analyzing the actual values ​​of each evaluation indicator for the target reservoir; determining the quantitative value of a single indicator; classifying the sidetracking potential levels based on the comprehensive evaluation of multiple indicators; and calculating the comprehensive score based on the comprehensive evaluation vector of multiple indicators and the assignment of evaluation space. This invention proposes the concept of evaluating sidetracking potential by reservoir type, accurately characterizing the size of the sidetracking potential of the target area, and compensating for the inaccurate potential evaluation when using the same parameters for reservoirs with different conditions; it also establishes an unknown single-indicator measurement function, realizing the hierarchical and quantitative analysis of geological parameters in the target area.

The invention belongs to the field of fault block oil and gas field exploration and is suitable for sandstone reservoirs of delta sedimentary systems. The invention provides an effective reservoir evaluation method based on a physical property index for solving the problems existing in effective reservoir evaluation at present. The method comprises the steps that the relative porosity of a reservoir is calculated; calculating the relative permeability of the reservoir; calculating a physical property index to quantitatively characterize an effective reservoir; and classifying the reservoir based on the physical property index, and establishing a reservoir evaluation standard of the research area. According to the method, the physical index (PI) is adopted to evaluate the effectiveness of the reservoir, the influence of depth on the lower limit of the effective reservoir is eliminated, point-to-surface expansion of quantitative evaluation of the reservoir is promoted, and the method is beneficial supplement for reservoir evaluation, so that technical support is provided for effective reservoir evaluation and effective reservoir distribution prediction.

The invention discloses a method and device for predicting natural energy of an undeveloped fault block oil reservoir. The method comprises the steps that fault development characteristics, natural water body multiples, reservoir connectivity physical properties and scores of differences between original pressure and saturation pressure of the undeveloped fault block oil reservoir are determined according to related geological information of the undeveloped fault block oil reservoir; determining a natural energy comprehensive factor value of the undeveloped fault block oil reservoir by utilizing a weighting method; and determining the natural energy of the undeveloped fault block oil reservoir according to the natural energy comprehensive factor value.

The application provides a fault two-plate sand body connectivity evaluation method based on seismic data, comprising the following steps: step 1, carrying out structural interpretation of a fault plane based on three-dimensional seismic data to form a fault plane planar structure map; step 2, using three-dimensional seismic data to perform layer flattening with the fault plane as a target layer, and establishing a layer flattening seismic data body; step 3, using the layer flattening seismic data body to extract attributes of the upper and lower plates of the fault respectively, and calculating a difference ratio A of the attributes on both sides of the fault; step 4, using the A value of a known open fault to determine the A value range of the sand body connectivity of the two plates of the fault, and defining the A value range as a threshold B, and determining the sand body connectivity of the two plates of the whole fault according to the B and the attribute graph A. The method is based on three-dimensional seismic data, fully utilizes logging data and is relatively simple to apply. The fault two-plate sand body layering connectivity can be effectively carried out in a three-dimensional seismic data coverage area, and a new method is provided for evaluating the feasibility of layering water injection between fault block reservoirs.

The embodiment of the invention provides a fault block trap reservoir-forming potential evaluation method, a medium and equipment. The method comprises the following steps: acquiring geological parameters of a target layer of a fault block trap; classifying each fault corresponding to the target layer; based on the classification result of each fault in the corresponding fault block trap, standardizing the geological parameters to obtain standard geological parameters; calculating a standard fault parameter of a transport fault, and determining a transport capability index; calculating a standard fault parameter of the shielded fault, and determining a shielding capability index; calculating a standard trap parameter of the fault block trap, and determining a trap aggregation index; determining a reservoir forming potential index of the target layer according to the transport capability index, the shielding capability index and the trap aggregation index; and sorting the fault block traps according to the reservoir forming potential indexes of all the target layers of each fault block trap to obtain a reservoir forming potential sorting result of the fault block traps. Through a quantitative evaluation mode in the method, accurate evaluation of the reservoir forming potential of the fault block trap is realized.

This invention relates to the field of geological exploration and 3D geological modeling technology, specifically a method and system for 3D modeling of ore bodies based on multi-source exploration geological data. The method includes: acquiring multi-source spatial discrete data and spatial continuous gradient data within a preset 3D spatial range, and constructing a spatial voxel mesh based on the multi-source spatial discrete data and spatial continuous gradient data; calculating the spatial metric tensor matrix of each voxel node in the spatial voxel mesh to generate a spatial topological barrier field; using the source point of the target object as the initial zero-order jump set to generate an initial symbolic distance field; extracting the zero isosurface of the initial symbolic distance field to obtain the Euclidean deviation residual; if the Euclidean deviation residual exceeds a preset residual threshold, continuing until the Euclidean deviation residual does not exceed the residual threshold; when the Euclidean deviation residual does not exceed the residual threshold, generating a 3D triangular mesh of the target object. This invention achieves simultaneous continuous generation of the ore body surface and fault blocking.

The invention discloses a stratigraphic dip angle quantification method and system based on a gamma curve, belongs to the technical field of petroleum engineering hydrocarbon reservoir structure evaluation, and is suitable for structure evaluation of a complex fault block low-porosity low-permeability thin interbed. Two natural gamma curves with similar natural gamma curve shapes are selected, and the stratigraphic dip angle is obtained according to the drill bit size and the hole drift angle. The method for calculating the stratigraphic dip angle by adopting the gamma curve has the advantages of rapidness, quantification and accuracy, and can accurately calculate the stratigraphic dip angle in time, identify the structural form and reservoir distribution and guide optimization and adjustment while drilling.

The present application relates to the technical field of seismic data processing, and discloses a method for recovering global paleo-structural configuration by moving fault block data bodies, comprising: dividing the hanging wall fault block data body into a plurality of unit bodies along the direction perpendicular to the section; moving any unit body of the hanging wall fault block data body to the boundary of the section along the reverse direction of the sliding direction according to a step size; calculating the seismic feature similarity of the adjacent unit bodies on both sides of the section each time the unit body is moved, and selecting the position with the highest seismic feature similarity as the optimal position for moving the unit body; repeating the moving of the unit body until all the unit bodies of the hanging wall fault block data body are moved; and repeating the above steps until the fault block data body group in the multi-fault activity period is moved, so that the global paleo-structural configuration is obtained. The method can offset the changes caused by the rotational movement of the fault, and improve the accuracy and precision of the recovered paleo-structural configuration.

The present invention provides a method and device for estimating the remaining oil distribution area near the fault of an oil well, comprising: S1, carrying out detailed reservoir description for multiple fault blocks covered by a target zone, and establishing multiple typical geological models representing the characteristics of the fault block reservoir in the target zone; S2, based on the geological model, using the reservoir numerical simulation method, performing reservoir numerical simulation calculation; S3, based on the reservoir numerical simulation calculation result, statistically analyzing the size of the remaining oil distribution area near the fault of the oil well when the water content of the oil well reaches a threshold value, and the oil well is an oil well in the extremely high water content period of the fault block reservoir; S4, establishing a remaining oil distribution area estimation model based on the geological model established in step S1 and the remaining oil distribution area obtained in step S3. The present application solves the problem of quantitatively estimating the remaining oil distribution area near the fault of an oil well in the extremely high water content period of a fault block reservoir; and achieves the purpose of rapid quantitative estimation of the remaining oil distribution area near the fault of an oil well in the extremely high water content period of a fault block reservoir.

The invention discloses a multi-layer-series multi-fault complex fault block edge-expanded well optimization design method, which comprises the following steps: according to a regional stratum layering mode, carrying out whole-region stratification comparative analysis, obtaining a well position deployment target layer, according to a target layer deposition cycle, obtaining an oil layer group, a sandstone group and a single sand body layering standard in combination with a 214 comparison method, finely calibrating earthquake and geologic horizon, and carrying out the optimization design of a multi-layer-series multi-fault complex fault block edge-expanded well. An isochronous stratigraphic framework is established, complex fault block boundary faults and internal inter-well minor faults are subjected to fine recognition, and meanwhile the up-and-down current situation of a target reservoir structure is obtained; the target sand body development condition of an unknown area is obtained, and then complex fault block target reservoir sand body distribution characteristics are obtained; on the basis of the obtained complex fault block oil reservoir data information, the design scheme of the well position in the oil reservoir is optimized; a slave well platform is planned on the ground, that is, three to five wells are drilled on one platform. According to the method, the most effective deployment well position can be determined, and efficient development of the complex fault block is ensured; and the reservoir drilling success rate and the new well utilization rate are improved.

The invention provides a numerical simulation method for a low-permeability fault block oil reservoir based on embedded discrete fractures, which comprises the following steps of: S1, constructing basic units of an angular point grid: establishing a three-dimensional rectangular coordinate system by taking a central point of a matrix grid as a circle center, and dividing each vertex of the matrix grid into eight different quadrants according to coordinate values of each vertex, determining the position of each grid block through the eight angular points; s2, crack definition and intersection point calculation: defining crack positions and shapes through coordinate points, and performing grid conductivity calculation; and S3, constructing a low-speed nonlinear seepage mathematical model of the low-permeability fault block oil reservoir, and solving the model to obtain simulation parameters. According to the method, the complex geological structure of the fault block oil reservoir can be accurately described, in addition, the nonlinear seepage characteristics of a low-permeability reservoir matrix and various complex mechanisms of oil reservoir dynamic development are considered, and dynamic development of the low-permeability fault block oil reservoir can be accurately and efficiently simulated.

The present invention discloses a method for optimizing the design of well expansion in complex fault blocks with multiple layers and multiple faults. The method includes: conducting a regional stratum comparative analysis based on the regional stratigraphic stratification model to obtain the target stratum for well location deployment; obtaining the stratum for oil layer groups, sandstone groups, and single sand bodies based on the sedimentary cycles of the target stratum in combination with the "214" comparison method; finely calibrating seismic and geological horizons; establishing an isochronous stratigraphic framework; finely identifying the boundary faults and internal inter-well small faults of the complex fault block; and simultaneously obtaining the structural ups and downs of the target reservoir; obtaining the development of target sand bodies in unknown areas, and then obtaining the distribution characteristics of the sand bodies in the target reservoir of the complex fault block; optimizing the design of well locations in the reservoir based on the obtained complex fault block reservoir data; and ground planning of slave well platforms, i.e., drilling three to five wells on one platform. This method can determine the most effective well location, ensure the efficient development of complex fault blocks, and improve the success rate of reservoir drilling and the utilization rate of new wells.

The invention discloses a fault block oil reservoir large fault footwall seismic time section structure illusion identification method. The method comprises the following steps that (1) a fault distribution rule is clarified by a coherent slice; (2) carrying out horizon calibration and low-speed layer bottom surface whole-area tracking interpretation; (3) large fault section interpretation; (4) forward modeling of large fault models in different forms and identification of illustrations in different types; the method is suitable for the technical field of seismic data structure artifact recognition, more actual geological conditions are considered, different types of false structures are simulated, the forming conditions and characteristics of different structure artifacts are clarified, judgment of true and false structures in structure interpretation is effectively guided, and the method has the advantages of being high in practicability and easy to popularize. And the method for recovering the false structure by utilizing low-speed zone bottom surface seismic interpretation horizon trend control is simple and efficient, and finally, real structural morphological characteristics can be displayed.

The invention discloses a fault block sand shale thin interbed type oil and gas reservoir potential layer determination method and device. The method comprises the steps that a first target potential layer list is determined; determining sensitive parameters by combining geological knowledge of the fault block sand shale thin interbed type oil and gas reservoir and sensitivity analysis on the reservoir in numerical simulation, and determining a first potential layer analysis parameter from the sensitive parameters; calculating a comprehensive screening value of each target potential layer according to the analysis parameter value of the first potential layer, the remaining reserves of the well layer and the current pressure maintaining level; adding the target potential layers of which the comprehensive screening values are greater than a preset threshold value into a second target potential layer list; analyzing a second potential analysis parameter for a target potential layer in the second target potential layer list, and performing potential comprehensive calculation in combination with the comprehensive screening value to obtain a comprehensive potential value; and querying a potential layer level corresponding to the comprehensive potential value from a preset potential layer division table. The productivity of the target oil and gas field can be quantitatively analyzed and estimated, and the target potential layer is optimized.

The invention relates to the technical field of seismic data processing, and discloses a method for moving a fault block data body to restore a global paleostructural form, which comprises the following steps of: dividing a hanging wall fault block data body into a plurality of unit bodies along a direction vertical to a section; and moving any unit body of the hanging wall fault block data body to the boundary of the section along the reverse direction of the sliding direction according to the step length, respectively calculating the seismic feature similarity of adjacent unit bodies on two sides of the section during each moving, and selecting the position with the highest seismic feature similarity as the optimal moving position of the unit body. And repeatedly moving the unit bodies until all the unit bodies of the loading broken block data body are moved. And repeating the steps until the fault block data body group in the multi-fracture active period is moved, and obtaining a global paleostructure form. According to the method, the change caused by the rotation motion of the fault can be offset, and the precision and accuracy of the recovered paleotectonic form are improved.

The invention belongs to the field of seismic data processing, and particularly relates to a fracture identification method based on spectrum variance coherence. The fracture identification method comprises the following steps: (1) selecting a data point from a three-dimensional seismic data volume, and constructing a seismic data sub-volume by taking the data point as a center; (2) calculating an amplitude spectrum of the seismic data sub-body through a time-frequency analysis method, and solving a variance attribute to obtain a spectrum variance attribute body; (3) solving an amplitude spectrum of the spectral variance attribute body; and (4) constructing a covariance matrix by using the amplitude spectrum obtained in the step (3), solving a characteristic value of the covariance matrix, calculating a coherence class attribute, solving a coherence class attribute body of the whole data body, and then carrying out fracture identification. The fracture identification method based on spectrum variance coherence provided by the invention can effectively suppress interference caused by inclined formation factors, improves the identification precision of a fracture system, and plays an important guiding role in exploration and development of fault block fractured oil and gas reservoirs.

The present invention provides a provincial-level 1:500,000 three-dimensional geological modeling method and system. The present invention proposes a complete and feasible provincial-level 1:500,000 three-dimensional geological modeling process at an altitude of less than 2,500 meters. Based on the provincial 1:500,000 longitudinal modeling stratigraphic units, drilling data and basic geological maps, cross-sections at an altitude of less than 2,500 meters and an interval of 10 kilometers are pushed deep, and the provincial-level geological modeling area is covered by a series of cross-sections; a pseudo-fault block method is adopted, and based on the fault system, the modeling area is divided into different modeling blocks on the basis of following the structural occurrence; the three-dimensional geological body structure model of each modeling block is established by driving the geological knowledge within the block and reasoning with geological elements, and the provincial-level 1:500,000 three-dimensional geological body framework modeling at an altitude of less than 2,500 meters is completed; combined with the three-dimensional geological body attribute modeling, the attribute model is coupled with the framework model to form a three-dimensional geological body model integrating the framework and the attribute to realize the provincial-level ultra-deep and ultra-large-scale geological body modeling.

The present application belongs to the technical field of oil and gas exploration and development, and relates to a complex fault block area paleogeomorphology recovery method and system based on structure backstripping, the method steps being: obtaining a structure map of a target layer to be recovered, identifying faults in the structure map, and sequentially numbering the faults according to a set direction to obtain a numbered structure map; dividing the vertical fault throw of each fault according to the calculated vertical fault throw of each fault in the numbered structure map, and dividing the horizontal fault throw of each fault according to the measured horizontal fault throw of each fault in the numbered structure map; setting a reference surface, respectively calculating the distance TR from the top surface structure map after fault throw recovery to the reference surface and the distance BR from the bottom surface structure map after fault throw recovery to the reference surface, and obtaining the compacted paleogeomorphology surface by subtracting the distance TR from the distance BR. The present application quantitatively recovers the paleogeomorphology of the target layer during the sedimentary period, and can effectively predict the sedimentary system and the hydrocarbon generation center.

The invention discloses a complex fault block thin oil reservoir drilling trajectory optimization method and device. The method comprises the steps that geological data and a three-dimensional geological model of a complex fault block reservoir are obtained; inputting the geological data into a pre-trained recognition model, and outputting a recognition result; determining a well position optimization target position; evaluating the well wall stability, high pressure and leakage risk of each position in the three-dimensional geologic model to generate an evaluation result; according to the well position optimization target position, the evaluation result and the preset trajectory parameters, the optimal drilling trajectory is generated, complex distribution characteristics and variable reservoir conditions of the underground thin oil layer can be fully considered, the well position and drilling trajectory determination efficiency is effectively improved, the determined well position and drilling trajectory can improve the drilling success rate, and the drilling efficiency is improved. The exploitation efficiency and yield of an oil field are obviously improved.

The embodiment of the application provides an evaluation method, device and equipment for complex fault block developed dynamic loss geological reserves, and belongs to the technical field of reservoir development. The evaluation method comprises the following steps: obtaining the injection-production relationship of oil-water wells of each layer in an oil-bearing area region, and performing single-well grid division on the oil-bearing area region according to the injection-production relationship of the oil-water wells, to obtain a plurality of single-well grids; determining the loss reserve type of each single-well grid based on the dynamic loss reserve causes of the oil-bearing area region; determining the loss reserve of each single-well grid according to the loss reserve type of each single-well grid; and determining the total loss reserve of each type of loss reserve type based on the loss reserve of each single-well grid. The application aims to more accurately obtain the loss reserve of a complex fault block reservoir.