45results about How to "Fine characterization" patented technology

The invention discloses an interpretation and evaluation method for a downhole distributed temperature monitoring production profile of multilayer gas reservoir. The method comprises the following steps that downhole distributed temperature monitoring data under a target well are obtained; the downhole distributed temperature monitoring data are preprocessed; the temperature data are segmented according to the test curve characteristics and the well logging interpretation result of the target well; a numerical simulation method is adopted to calculate the temperature of each layer of the production profile of a target well rockshaft by using a seepage pressure field-temperature field model of the multi-layer gas reservoir; and the temperature of each layer of the production profile of therockshaft is compared with the segmented temperature data, and the optimal production flow of each layer is obtained through an optimization theory to obtain the production profile of the target well.Based on the gas state equation, the mass conservation and the energy law, the production profile evaluation method is proposed by coupling a seepage pressure field and a temperature field of the gasreservoir, the production profile of a gas well can be accurately obtained, and the method has important practical significance for fine description of the production of domestic high-temperature high-pressure multilayer gas reservoir and improvement of exploration and development benefits.

The invention provides a shale pore imaging method and a device, wherein the method comprises the steps: X-ray scanning is performed on a shale sample to obtain projection data of X-ray scanning; noise elimination correction processing is performed on the projection data; light intensity of X-ray and transport of intensity equation TIE are adopted to construct a phase interference model of the above projection data; discretization process is performed on the interference model based on a spatial domain, and a spatial domain discretization operator equation is obtained; the processed projection data serves as input data of the spatial domain discretization operator equation, and phase correction projection data is obtained; a filter back projection algorithm is utilized to process the above phase correction projection data, and an image of the shale sample is obtained. According to the invention, a method for solving the spatial domain is adopted, the interference of the phase information is reduced, resistance effect for noise is also presented, and meticulous expression can be performed on nanoscale pore throat and millimeter-scale and micron-scale pores of the shale sample.

The invention discloses a curve fitting method for duration of multiple voltage sags, and a voltage sag severity assessment method. The curve fitting method comprises the steps: obtaining the change rule of the voltage value of a power grid with time in a unit time, and obtaining a voltage change time sequence curve; obtaining the number of voltage sags of the voltage in the unit time and the data of each voltage sag according to the voltage change time sequence curve, wherein the data of each voltage sag comprises the time period of the voltage sag and the voltage value corresponding to the voltage sag; taking a plurality of voltage values Vi between the maximum voltage value Vst and the minimum voltage value Vmin of each voltage sag; calculating the time duration values corresponding to the plurality of voltage values Vi; superposing the time duration of all voltage sags corresponding to the same voltage value Vi, so as to obtain the total time duration under the same voltage value Vi, and to carry out the fitting of the total time duration curve according to the total time duration corresponding to the plurality of voltage values Vi.

Embodiments of the present invention provide a method, device, and electronic device for detecting abnormal IP addresses, wherein the method includes: if any piece of data of any IP address is detected to touch a given rule, then based on the given rule, Based on the risk level of the IP address, a basic score is given for multiple pieces of data on multiple website platforms under the IP address; based on the basic score under the IP address, an overall risk score is given to the IP address; based on the overall risk score and the type of the IP address, detecting whether the IP address is an abnormal IP address, and if the detection is yes, adding the IP address to the abnormal IP address database. The embodiments of the present invention can describe IP addresses more precisely, so that abnormal IP addresses can be detected and processed more comprehensively and accurately.

The invention discloses a method for depicting the relationship between horizontal well track and strata, comprising the following steps: (1) acquiring the position information of a horizontal well on an oil and gas reservoir structure to get a geological data body of an area where the horizontal well is located; (2) standardizing the well logging curve of vertical wells and pilot hole wells in the area where the horizontal well is located; (3) performing stratigraphic comparison to determine the top and bottom limits of a drilling target stratum of the horizontal well, and building a target stratum top and bottom structure model; (4) selecting a vertical well adjacent to the horizontal well, and conducting multi-well fine sand body comparison to form a sand body fence diagram; (5) building a 3D sand body model; (6) collecting sand body slices along the horizontal well track in the 3D sand body model to get an initial model of the relationship between horizontal well track and strata; and (7) correcting sand body slices around the horizontal well track to realize visual representation and fine depiction of the relationship between horizontal well track and strata. By using the method, fine depiction of the relationship between horizontal well track and strata is realized.

The embodiment of the present invention provides a method and device for forecasting a channel sand body based on sub-azimuth superimposition. The method comprises a step of determining a main sourcedirection of a target layer in a work area and fracture system features of the target layer and an upper strata, a step of obtaining an OVR-domain-based regularized offset gather of the target layer,a step of dividing the regularized offset gather into multiple groups of sub-orientation superposition gathers according to azimuths according to the main source direction and the fracture system features, and determining a sub-orientation superposition gather which is perpendicular to the main source direction, a step of carrying out wave impedance inversion on the sub-orientation superposition gather perpendicular to the main source direction and obtaining an inversion profile, and a step of extracting a plane in the inversion profile and obtaining plane distribution of the channel sand bodyin the target layer. According to the embodiment of the present invention, the recognition accuracy of river channel sand body forecasting can be improved.