Abstract: An apparatus for evaluating a dried crystal error in a CO2 drying experiment comprises a heating jacket, a visual container, a weighing device, a transparent cover, a control apparatus, a vacuum pump, a damping table and a heating apparatus, and can accurately dry and weigh a rock sample subjected to a carbon dioxide drying effect experiment in the visual container, so that the crystal error caused by evaporation of a solution in the rock sample in the process is calculated. This apparatus provided by the present invention has high precision and simple operation, can well evaluate the crystal error caused by the saline solution retaining in the rock sample when the rock sample is directly dried in the carbon dioxide drying effect experiment, and can correct the results of the carbon dioxide drying effect experiment compared with the prior art, thereby obtaining accurate experiment results.

Abstract: The present invention discloses a method, equipment, and readable storage medium for tracking and evaluating the life cycle EUR of horizontal wells, and relates to the field of oil and gas development technology. The present invention divides the life cycle stages of fractured horizontal wells in unconventional oil and gas reservoirs, provides corresponding EUR evaluation steps for different life cycle stages based on the production performance characteristics of fractured horizontal wells in unconventional oil and gas reservoirs in the drilling and fracturing stage, extraction and testing stage, rapid production decline stage, and low pressure and small volume production stage, and establishes the EUR tracking and evaluation process of fractured horizontal wells in unconventional oil and gas reservoirs throughout their life cycle from drilling to abandonment.

Abstract: Provided is a three-dimensional measurement device, including an illumination system (I) and an imaging system (II). The illumination system includes, along an illumination light path, a light source (8), a light beam shaping apparatus (8), a pattern modulation apparatus (6), and a projection lens (2). The pattern modulation apparatus is configured to form a coded pattern. The light beam shaping apparatus is configured to shape light emitted by the light source into near-parallel light. The projection lens is configured to project the coded pattern onto a target object. The imaging system includes an imaging lens (3), a first beam-splitting system (12, 13), and an image sensor group including N image sensors (9, 10, 11). The first beam-splitting system is configured to transmit the coded pattern received by the imaging lens and projected onto the target object to the N image sensors of the image sensor group.

Abstract: The invention discloses a full wellbore pressure calculation method, device and computer-readable storage medium for fracturing horizontal wells, includes steps: collect basic parameters, establish fully implicit numerical model of formation flow; solve the full implicit numerical model under an inner boundary condition of a constant gas production rate; calculate wellbore pressure change of each fracturing section of horizontal well; calculate the bottom-hole pressure of each fracture initiation point; repeat steps until the variables converge, the bottom-hole flow pressure and the bottom-hole pressure at each fracture initiation point are obtained at this time step; the wellbore pressure and wellhead casing pressure are calculated at this time step.

Abstract: The invention discloses a full wellbore pressure calculation method, device and computer-readable storage medium for fracturing horizontal wells, includes steps: collect basic parameters, establish fully implicit numerical model of formation flow; solve the full implicit numerical model under an inner boundary condition of a constant gas production rate; calculate wellbore pressure change of each fracturing section of horizontal well; calculate the bottom-hole pressure of each fracture initiation point; repeat steps until the variables converge, the bottom-hole flow pressure and the bottom-hole pressure at each fracture initiation point are obtained at this time step; the wellbore pressure and wellhead casing pressure are calculated at this time step.

Abstract: A method for coupling hydraulic fracture network extension and production performance of a horizontal well in an unconventional oil and gas reservoir includes: establishing a complex hydraulic fracture network model of a fractured horizontal well in an unconventional oil and gas reservoir based on a fracture extension theory; constructing three-dimensional three-phase mathematical models of seepage for the fractured horizontal well based on an embedded discrete fracture model; and constructing a fully implicit numerical calculation model by a finite difference method through three-dimensional orthogonal grids, and solving iteratively, thereby accurately predicting a production performance characteristic of the fractured horizontal well in the unconventional oil and gas reservoir.

Abstract: Provided is a three-dimensional measurement device, including an illumination system (I) and an imaging system (II). The illumination system includes, along an illumination light path, a light source (8), a light beam shaping apparatus (8), a pattern modulation apparatus (6), and a projection lens (2). The pattern modulation apparatus is configured to form a coded pattern. The light beam shaping apparatus is configured to shape light emitted by the light source into near-parallel light. The projection lens is configured to project the coded pattern onto a target object. The imaging system includes an imaging lens (3), a first beam-splitting system (12, 13), and an image sensor group including N image sensors (9, 10, 11). The first beam-splitting system is configured to transmit the coded pattern received by the imaging lens and projected onto the target object to the N image sensors of the image sensor group.