43 results about "Tectonic deformation" patented technology

A method for forming a prograde kinematic model allowing reproduction in 3D intermediate geometries of geologic objects of an underground zone such as a sedimentary basin, from an initial state to a current state. A representation of the current geometry of the geologic objects of the zone is formed by interpretation of acquired data obtained by seismic exploration, by in-situ measurements and by observations, then each geologic object is subdivided into layers separated by deformation interfaces. Each one of the layers is defined by means of a grid pattern into a series of hexahedral volume elements. Tectonic deformations are then applied separately and successively to each series of volume elements of a layer in relation to an underlying layer while conserving the thickness and the surface area of an intermediate neutral surface in each volume element. Then the tectonic deformations are iteratively modified until a geologic representation substantially in accordance with the known final state of the underground zone is obtained.

The invention provides a tectonic physical simulation method for a thrust belt. The method comprises the steps of (1) deformation analysis, (2) experimental modeling, (3) simulation experiment, and (4) loop optimization. In the first step, based on the tectonic setting of intra-continental deformation, deep deformation characteristics of a thrust belt are analyzed and a deformation field and a geologic model of segmented deformation are built. In the second step, a kinetic model is built in such a way that a first sand body and a second sand body are preset to form 70-degree angular contact, and an orogenic belt and a basin and an inclined compression and twisting process are simulated; the second sand body is inside provided with a silica gel layer to simulate the influence of a ductile bed on tectonic deformation; a single-side squeezing mode is employed as the acting force mode, so that the dive of the first sand body to the second sand body can be achieved. According to the method, the two block bodies with crosswise rheological difference are designed, so that the problem of thrust belt border deformation can be handled, the dive of an orogenic belt to a basin and the foldback thereof can be achieved, intra-continental thrust happening after splicing of ancient plates of different natures can be reflected and the method conforms to the unique rejuvenated foreland evolution and tectonic structure background of thrust belts.

A simulation test method for gas extraction from a tectonically-deformed coal seam in-situ by depressurizing a horizontal well cavity. A coal series stratum structure reconstruction and similar material simulation subsystem simulates a tectonically-deformed coal reservoir. A horizontal well drilling and reaming simulation subsystem constructs a U-shaped well in which a horizontal well adjoins a vertical well, and performs a reaming process on a horizontal section thereof. A horizontal well hole-collapse cavity-construction depressurization excitation simulation subsystem performs pressure-pulse excitation and stress release on the horizontal well, and hydraulically displaces a coal-liquid-gas mixture such that the mixture is conveyed towards a vertical well section. A product lifting simulation subsystem further pulverizes the coal and lifts the mixture. A gas-liquid-solid separation simulation subsystem separates the coal, liquid and gas. A monitoring and control subsystem detects and controls the operation and the execution processes of equipment in real time.

A simulation test system for gas extraction from a tectonically-deformed coal seam in-situ by depressurizing a horizontal well cavity. A coal series stratum structure reconstruction and similar material simulation subsystem simulates a tectonically-deformed coal reservoir. A horizontal well drilling and reaming simulation subsystem constructs a U-shaped well in which a horizontal well adjoins a vertical well, and performs a reaming process on a horizontal section thereof. A horizontal well hole-collapse cavity-construction depressurization excitation simulation subsystem performs pressure-pulse excitation and stress release on the horizontal well, and hydraulically displaces a coal-liquid-gas mixture such that the mixture is conveyed towards a vertical well section. A product lifting simulation subsystem further pulverizes the coal and lifts the mixture. A gas-liquid-solid separation simulation subsystem separates the coal, liquid and gas. A monitoring and control subsystem detects and controls the operation and the execution processes of equipment in real time.

A method and system provide the ability to modify a three-dimensional (3D) model in a shape editing system. The 3D model is obtained and faces of the model are selected as features (S). A subset (S′) of the model that are fixed are selected. Shape modification operations to be performed are prescribed. A deformation lattice is constructed by setting up a lattice structure with control points. Parametric space (u,v,w) is defined in terms of vertices of the lattice structure. Euclidean space (x,y,z) of the 3D model is mapped to the parametric space (u,v,w). The deformation lattice is evaluated by selecting control points, and either affine transformations are applied directly to the selected control points, or the deformation lattice is deformed based on a discrete fitting problem. The evaluated deformed model is then output.

The invention discloses a coal measure strata stress distribution simulation device under a multi-stage tectonic movement function. The coal measure strata stress distribution simulation device comprises a rock stratum simulating and fixing system, a tectonic power simulation system, a tectonic deformation control system, a pressurization system and an information collection testing and analyzing system, wherein multiple layers of rock strata are arranged in the rock stratum simulating and fixing system; the tectonic power simulation system applies longitudinal force and lateral force to the rock strata; the tectonic deformation control system is used for controlling the deformation of the rock strata to enable the rock strata to achieve an anticipative tectonic form; the pressurization system adopts a hydraulic system to provide power for the tectonic power simulation system and the tectonic deformation control system. The invention also discloses a coal measure strata stress distribution simulation method under the multi-stage tectonic movement function. Coal measure strata stress distribution characteristics and an evolution process thereof under an overlapping function of two-stage tectonic movement can be simulated, a scientific basis is provided for the stress distribution prediction of the coal measure strata of different tectonic positions. According to the device, the stresses of different tectonic positions above and below a fold neutral surface can be simulated.

The invention relates to a basin edge complex tectonic zone normal-pressure shale gas horizontal well integrated design method. In the design process, for the characteristics that such as the Southeast Chongqing basin edge transition zone is strong in tectonic deformation, and the geological condition is complex, through superposition evaluation of a structural figure, a burial depth figure, a porosity figure, a gas content figure, a pressure coefficient figure and a curvature figure, geology and engineering optimal dessert areas are optimized, well sites are deployed, the seismic attribute isused for predicting stratum seam hole development situation, interval intvl losing is avoided, the well drilling aging is improved, and through target window and horizontal well orientation optimization and curvature prediction, the reservoir stratum fracturing effect is improved, the reservoir stratum capacity is sufficiently released, the single well economic benefits are improved, the technical support is provided for efficient exploration and development of the basin edge transition zone shale gas, operation is high, and the application prospect is wide.

A method and system provide the ability to modify a three-dimensional (3D) model in a shape editing system. The 3D model is obtained and faces of the model are selected as features (S). A subset (S′) of the model that are fixed are selected. Shape modification operations to be performed are prescribed. A deformation lattice is constructed by setting up a lattice structure with control points. Parametric space (u,v,w) is defined in terms of vertices of the lattice structure. Euclidean space (x,y,z) of the 3D model is mapped to the parametric space (u,v,w). The deformation lattice is evaluated by selecting control points, and either affine transformations are applied directly to the selected control points, or the deformation lattice is deformed based on a discrete fitting problem. The evaluated deformed model is then output.

The invention discloses a structure physical simulation experiment device for pressing-pulling and shearing full-angle overlapping deformation, and relates to the field of tectonic geology research. The device comprises an experimental platform and a control mechanism, the experimental platform is provided with a supporting movement mechanism, the supporting movement mechanism is provided with a push-pull mechanism, a shearing mechanism is arranged below the push-pull mechanism, and the shearing mechanism is rotatably installed on the experimental platform; and the control mechanism is separately and electrically connected to the supporting movement mechanism, the shearing mechanism and the push-pull mechanism, and the control mechanism is used for regulating and controlling the supportingmovement mechanism and driving the shearing mechanism and the push-pull mechanism to move so as to simulate the processes of extrusion, tension, shearing, pressure torsion, tension torsion and the like of a structure. According to the invention, full-angle superposition among extrusion, tension deformation and shear deformation can be realized, and multi-angle and multi-stage pressure torsion, tension torsion and other structural deformation processes can be simulated.

The invention discloses a bi-directional dynamic physical simulation experiment device and an experiment method for a high-gravity environment. The experiment device comprises an experiment box and apower device. The experiment box is composed of a fixed plate located on the front and rear sides and a movable plate located on the left and right sides, wherein the fixed plate and the movable plateare vertically arranged, the test material is arranged in the test box, and the two side walls of the movable plate move back and forth along the fixed plate under the action of the power device, soas to squeeze the test material in the deformation test box. Under the condition of constant gravity, the experiment device of the invention completes the arrangement of the experiment materials in the deep-seated structure physical simulation experiment box; Under the condition of centrifugal force, the bi-directional dynamic device of the tectonic physics simulation experiment box is automatically controlled, so that the deep tectonic physics simulation experiment is completed in the tectonic physics simulation experiment box, and the physical simulation experiment process of the bi-directional dynamic tectonic deformation in the experiment box is studied, which provides the real-time geological tectonic evolution process model for the researchers.

A method of extracting gas from a tectonically-deformed coal seam in-situ by depressurizing a horizontal well cavity is provided. A horizontal well drilling and reaming subsystem constructs a U-shaped well in which a horizontal well adjoins a vertical well, and performs a reaming process on a horizontal section of the horizontal well to enlarge a hole diameter. A horizontal well hole-collapse cavity-construction depressurization excitation subsystem performs pressure-pulse excitation and stress release on the horizontal well of tectonically-deformed coal bed methane, and hydraulically displaces a coal-liquid-gas mixture such that the mixture is conveyed towards a vertical well section along a depressurizing space. A product lifting subsystem pulverizes the coal and lifts the mixture towards a wellhead of a vertical well. A gas-liquid-solid separation subsystem separates the coal, liquid and gas. A monitoring and control subsystem detects and controls the operation conditions and the execution processes of technical equipment in real time.

The invention discloses a three-dimensional crustal deformation conversion method based on monorail InSAR observation, and the method comprises the following steps: 1), carrying out the inversion of fault sliding distribution through employing monorail InSAR sight direction one-dimensional data and preliminary or simplified fault geometric parameters based on an elastic dislocation model; then performing orward modeling to obtain a continuous three-dimensional deformation direction of the earth surface space; and 2) taking the three-dimensional deformation direction obtained in the step 1) asa constraint, converting InSAR sight into one-dimensional deformation data to obtain N, E and U three-dimensional data, and further obtaining an earth crust deformation three-dimensional deformation field. According to the invention, the intrinsic physical significance of earth crust motion is reflected, the local detail characteristics of the fault deformation direction are reflected, very important boundary and constraint conditions are provided for inversion of earth internal structure deformation, and a new method is provided for acquisition of an inter-earthquake continuous surface three-dimensional deformation field and further analysis of crustal deformation characteristics.

The invention discloses a magmatic diapiric and extensional effect superimposed simulation device and analysis method, and belongs to the field of fault formation mechanism study. The magmatic diapiric and extensional effect superimposed simulation analysis method comprises the following steps of immersing a medium filled in a medium container into a sand box containing multiple layers of sand; then, starting a first engine and a second engine to stretch the sand box; cutting sand bodies to obtain a first slice; firstly starting the first engine and the second engine to stretch the sand box filled with the multiple layers of sand; then immersing the medium filled in the medium container into the sand box; cutting the sand bodies to obtain a second slice; obtaining a plurality of typical structure deformation styles according to the first slice and the second slice; comparing the typical structure deformation styles with a structure deformation style of a target region; and if the structure deformation style of the target region is similar to any one or a plurality of features in the typical structure deformation styles, determining the formation types of the structure deformation of the target region and the typical structure deformation styles. The seismic interpretation of the target region is favorably guided.

The invention discloses a thermal parameter identification method based on an optimum matching image of affine transformation. The thermal parameter identification method comprises the following steps: preparing a high-temperature speckle test piece, fixing a to-be-tested piece on a three-point bending test machine, and collecting a speckle image before deformation of the test piece; applying a heat load, and collecting the speckle image after deformation of the test piece; selecting a calibration area on the speckle image before deformation, and finishing the practical length calibration of a unit pixel; selecting a calculating area on the speckle image before deformation, and setting an iteration initial value by taking to-be-tested thermal parameters as to-be-optimized vectors; performing affine transformation on the speckle image after deformation, thereby acquiring an image before tectonic deformation; matching the image before tectonic deformation with the speckle image before deformation, and performing continuous iterative optimization on the to-be-tested thermal parameters; setting a termination iteration threshold value, terminating the iteration according to the termination iteration threshold value, and realizing the optimal matching of the image before tectonic deformation and the speckle image before deformation; measuring and eliminating the translation and rotation of a rigid body; and meanwhile, identifying the thermal parameters including elasticity modulus, Poisson ratio and thermal expansion coefficient.

The invention provides a physical simulation method and device for salt rock stratum sealing performance after tectonic deformation and a medium. The method comprises the following steps of: executing tectonic deformation operation on an experimental model, and injecting oil; determining a data model according to the experimental model; determining the thickness of a salt rock layer, the overlying ground depth and oil injection distribution according to the data model; drawing a map of overlying ground pressure and the thickness of the salt rock layer according to the thickness of the salt rock layer and the depth of the overlying ground; marking the overlying ground pressure and salt rock layer thickness map according to the oil injection distribution, obtaining the sealing area, depicting the relation between the oil injection distribution and the overlying ground pressure and the relation between the oil injection distribution and the salt rock layer thickness quantitatively, and obtaining the area related to the salt rock layer sealing performance through the quantitative relation; and guiding actual oil and gas reservoir exploitation through the sealing area, and therefore, the probability of successful exploitation is greatly increased.

The invention discloses an ultrafine grain rolling method of a large-size 45 steel bar, and relates to the field of machining, particularly to the ultrafine grain rolling method of the large-size 45 steel bar. The ultrafine grain rolling method comprises the following steps of design of rolling tools, specifically comprising design of rollers and design of guide plates: setting the rollers as double-curved surface circular table rollers, specifically, forming generatrices of the rollers through connecting two curves, and setting one surfaces of the guide plates as curved surfaces; constructionof a deformation zone: oppositely placing the curved surfaces of the two guide plates, placing the two rollers between the guide plates, and setting a region refined by the two guide plates and the two rollers as the deformation zone; and selection of rolling feeding manner: selecting reverse feeding rolling manner, and constructing an even-ovality deformation zone. According to the ultrafine grain rolling method of the large-size 45 steel bar provided by the invention, the double-curved surface circular table rollers and the curved surface guide plates are designed, the even-ovality deformation zone is constructed, and severe plastic deformation under the precondition of the Mannesmann effect of a central part can be remarkably inhibited.

The invention provides a modeling method and system of a geologic model, and solves the problem that most of the geologic modeling work is guided by a fault-related fold theory, is mainly carried out for a thrust belt of thin belt development, and cannot be suitable for a mountain-front thrust belt of transition belt development. The modeling method of the geologic model comprises the following steps: selecting a seismic section, and converting the seismic section into a depth modeling seismic section; obtaining a surface geology actual measurement profile based on the seismic profile; obtaining a structure modeling interpretation scheme based on the depth modeling seismic section and the surface geology actual measurement section; modifying the structural modeling interpretation scheme based on a structural deformation mode to obtain a preliminary interpretation scheme of the modeling seismic section; and adjusting the preliminary interpretation scheme to obtain a geologic model.

The invention discloses a physical simulation experiment device and method for lithosphere tectonic deformation. The experiment device comprises a drum type centrifuge sealed cabin, a drum type centrifuge driving power cabin, a tectono deformation device control system and a motion control system, wherein hanging baskets are hung at the two ends of a cantilever of a centrifuge, tectono deformation experiment boxes are placed in the hanging baskets, and a tectono deformation control system accurately controls deformation of experiment materials in the experiment boxes and can simulate tectono deformation processes of various lithosphere scales; and the experiment device further comprises a real-time monitoring camera and a high-speed image acquisition device. According to the invention, when the centrifuge operates, the centrifugal force at the bottom of the hanging basket can reach 2500g, so that a lithosphere tectono deformation physical simulation experiment in a supergravity environment is realized; loose quartz sand can be used as an experiment material, so that the simulation experiment is more convenient; the experiment device is low in manufacturing cost, large in experimental space, high in bearing capacity, high in experimental material deformation control precision and capable of continuously monitoring data and recording tectonic deformation images in real time.

The invention discloses a discrete element-based cracked valley basin extension process simulation method, which gives a tough substrate construction method by fully considering geological characteristics of a stratum in a geological historical period, and establishes a discrete element model close to a cracked valley basin extension process. In the simulation process, the deposition or denudationprocess can be added, and the influence of the general geological phenomenon on the structural deformation of the area is researched. According to the method, a pre-existing fault does not need to beset, so that the model has a particle structure similar to a real rock mass. The discrete element simulation can supplement and replace a part of experiments, and the discrete element simulation-based structure evolution process and the structure deformation mechanism research method can obtain data which are not easy to measure in the experiments. The existing theory is improved to solve actualproblems, and theoretical support is provided for oil and gas exploration work of the cracked valley basin.

The invention discloses an extrusion structure deformation measurement method based on residual stratum deposition analysis, which solves the problem of accurate calculation of extrusion deformation of a complex structure area, and can accurately calculate the deformation of a complex extrusion structure, wherein the deformation of the extrusion structure is divided into two parts, one part is thecalculation of the extrusion deformation of the stratum with continuous residual distribution; the other part is the calculation of the extrusion deformation of the stratum with no residue. For the calculation of the extrusion deformation of the residue-free stratum distribution area, the distance between the gravel and the current deposition boundary is subtracted from the gravel carrying distance in the residual stratum close to the stratum-residue-free area to obtain the structural deformation of the stratum-residue-free area; and the extrusion deformation of the continuous distribution area of the residual stratum and the structural deformation of the approximately stratum-residue-free area to obtain the total deformation amount of the extrusion structure. According to the method, theextrusion deformation of the stratum-residue-free area is quantitatively calculated from unrecoverable; and the method is of great significance to ascertaining the structural deformation process andrecovering the residual stratum prototype basin.

The invention provides a method for recovering a paleo-lava flow direction and an original form of a volcano mechanism based on electric imaging logging. The method comprises the steps: 1, determiningthe occurrence of a volcano lava layer interface based on electric imaging logging; 2, determining the occurrence of tuff or tuff mudstone based on electric imaging logging; 3, eliminating structuralinformation of the lava layer; and 4, recovering the original form of the volcano mechanism based on multi-well rock stratum comparison. The occurrence of the volcano lava layer is determined based on a flow pattern structure and a blocky lava unit interface; the structural deformation degree is determined based on the occurrence of tuff and tuff mudstone; lava stratum occurrence structure correction and paleo-lava flow orientation judgment are carried out based on the occurrence of the tuff and tuff mudstone; and the original form of the ancient volcano mechanism is determined based on the well spacing, the paleo-lava flow orientation, the lithofacies and the rock stratum thickness change. According to the scheme provided by the invention, the operation is simple, and the purpose can bedirectly achieved only through electric imaging logging data.

The invention belongs to the technical field of lithosphere stretching deformation simulation, and discloses a sand box model, a stretching deformation physical simulation method and system and application. A first layer (bottommost layer) of the sand box model is a simulation material layer of mantle on a lithosphere, a second layer is a simulation material of tough earth crust, and a third layer is a brittle earth crust simulation material. The first layer is silicone, the second layer is wet clay, and the third layer is quartz sand. The simulation material of the mantle on the lithosphere can also be honey, paraffin or plasticized rosin and the like; the simulation material of the tough earth crust can also be plasticine, kaolin and the like; the brittle earth crust simulation material can also be clay, gypsum or talcum powder and the like. According to the invention, the limitation that the existing physical simulation experiment method can only simulate the stretching brittle deformation of the superficial layer of the earth crust is made up, so that the structure physical simulation experiment can simulate the deformation characteristics of the whole lithosphere stretching structure.

The invention provides an analysis method of a geological tectonic evolution and deformation process. The method of the invention includes the following steps that: the current formation information and geological characteristics of a target area are acquired; a tectonic evolution process and historical formation information are obtained through inversion according to the current formation information and geological characteristics; an initial discrete element model is generated according to the historical formation information of the target area, wherein the initial discrete element model is composed of randomly-generated particles of different radiuses; tectonic deformation is performed on the initial discrete element model according to the tectonic evolution process, so that a tectonic model can be obtained; whether the geological characteristics of the tectonic model and the geological characteristics of the current formation information satisfy preset similarity is judged; and if the geological characteristics of the tectonic model and the geological characteristics of the current formation information do not satisfy the preset similarity, the material parameters of the particles of various historical formations in the initial discrete element model are adjusted, tectonic deformation is performed on the parameter-adjusted initial discrete element model until the geological characteristics of a tectonic model which is obtained through the deformation of the parameter-adjusted initial discrete element model and the geological characteristics of the current formation information satisfy the preset similarity.

The invention discloses a geologic body model updating method and device, equipment and a storage medium. The method comprises the following steps: converting newly acquired geological record data into a control line and a control point; carrying out feature-preserving implicit reconstruction on the to-be-updated geologic body model based on feature detection, and obtaining a corresponding grid model; constructing a deformation constraint condition on the grid model based on the control points on the control lines; determining and adjusting a local update deformation neighborhood based on a deformation constraint condition; and performing local updating on the to-be-updated geologic body model based on the local updating deformation neighborhood to obtain a locally updated geologic body model. In this way, the geologic body model can be locally and dynamically updated based on the geological record data, and then the updating efficiency of mine digital design is improved.