4 results about "Fracture face" patented technology

The application discloses a kind of based on microseismic crack face construction and seepage evaluation method, belong to geological analysis technical field.Use hydraulic fracturing to the detection area, the microseismic source position identification generated by rock mass rupture;Determine the best fitting crack plane from the clustered microseismic source position, extract the spatial orientation information of hydraulic fracturing induced crack;Reconstruct the spatial distribution range of hydraulic fracturing induced crack in the plane, obtain the induced crack geometry of limited scale;Discretize the geometry of induced crack face, construct a simplified hydraulic fracture plane at the perforation location and discretize, form the crack geometry set containing induced crack and hydraulic fracture;Embed the crack geometry set containing induced crack and hydraulic fracture into the rock geometry model, carry out reservoir seepage simulation under real working conditions, quantitative evaluation.It is simple in steps, convenient to use, and has good imaging effect.

The application belongs to the technical field of medical image processing, and particularly relates to a kind of bone fracture block automatic reduction methods based on medical image;Including: obtaining the three-dimensional medical image data and three-dimensional label data after fracture of the object to be processed, and pre-processing the three-dimensional medical image data after fracture;The three-dimensional medical image data after fracture is input into the fracture surface segmentation model trained, and the main bone surface area and fracture block surface area are obtained;Three-dimensional coordinates are extracted and main bone surface point cloud and fracture block surface point cloud are constructed;Iterative closest point registration is carried out on the two kinds, and the cumulative rigid body transformation parameter is obtained;The voxel coordinate set corresponding to the fracture block is determined, and the voxel coordinate set is subjected to spatial transformation using the cumulative rigid body transformation parameter, to obtain the three-dimensional label result after reduction;The application can simultaneously complete the problems of automatic identification of fracture section and automatic solution of fracture block reduction posture, improve the degree of automation, result stability and interpretability of fracture block reduction process.

The application discloses an experimental method and system for testing the dissolution degree of a fracture surface. A plurality of homologous core samples are obtained from the same geological unit and a standardized reaction surface is prepared; initial physical property parameters are obtained; at least two samples are placed in a closed reaction environment simulating reservoir temperature and pressure and fluid flow conditions for dynamic dissolution experiments; at a plurality of preset time nodes, the reacted samples are sequentially taken out for destructive testing under the premise of ensuring the continuity of the thermodynamic and hydrodynamic states of the reaction system, and morphology and mechanical property evolution data are obtained; meanwhile, the outflow is continuously collected according to the period to analyze the element content change; the initial physical property parameters, the time-series mechanical property evolution data and the time-series chemical element release data are integrated to establish a quantitative dynamic correlation model between the dissolution degree of the fracture surface and the mechanical property evolution. The application realizes high-fidelity comprehensive evaluation of the dissolution evolution law of the fracture surface, and provides key data support for the optimization of the fracturing process and the safety evaluation of CO2 storage.

The application discloses a hydraulic fracture face reproduction and combined proppant conductivity testing method, which comprises the following steps: preparing a cylindrical sample and a flow guide plate body from obtained downhole cores, pouring concrete outside the cylindrical sample to form a standard cubic sample, and performing a hydraulic fracturing experiment on the standard cubic sample; performing three-dimensional laser scanning on the fracture of the cylindrical sample to extract a hydraulic fracture face, and carving the upper flow guide plate fracture face or the lower flow guide plate fracture face according to the extracted hydraulic fracture face; installing the upper flow guide plate fracture face and the lower flow guide plate fracture face in a flow guide chamber to perform a flow guide test, and calculating a proppant embedding degree value and a proppant crushing rate according to the test result. The application extracts the fracture face after the hydraulic fracturing experiment through three-dimensional laser scanning, obtains a numerical fracture face, carves a plurality of groups of flow guide plates with the same hydraulic fracturing fracture face by using a carving machine, and can truly obtain the flow guide capacity and embedding degree of mixed proppants of different quality quartz sand and ceramsite in the well.