42 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 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.

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.

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 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 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 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.

The embodiment of the invention provides a shale gas quantitative evaluation method, device and equipment based on tectonic deformation strength. The method comprises the steps of determining parameters, reflecting the tectonic deformation strength, of a target research area; constructing a deformation strength index according to the parameters; and according to the deformation strength index, carrying out shale gas step-by-step evaluation zoning on the target research area. According to the embodiment of the invention, quantitative evaluation of the reservoir favorable zone of the shale oil and gas area can be realized.