2 results about "Intersection graph" patented technology

The application discloses a J function curve classification method and device for an oil reservoir well section, and the method comprises the following steps: obtaining J function values and water saturation values of a plurality of cores measured by experiments; obtaining a J function mathematical model of each core and a pseudo J function curve of each core; determining a J function curve type of each core according to the J function mathematical model of each core and the pseudo J function curve of each core; obtaining porosity values and permeability values of the plurality of cores measured by experiments, and combining the J function curve type of each core to draw a porosity-permeability intersection graph, and determining a demarcation line of J function curves of different types in the porosity-permeability intersection graph; further determining a division area of different J function curve types; drawing data points of porosity and permeability corresponding to a J function curve to be classified in the intersection graph, and determining the classification of the J function curve to be classified according to a division area where the data points are located, so that the J function curve can be accurately classified.

The invention provides a carbonate rock bursting pressure calculation method, system and equipment and a medium. The carbonate rock bursting pressure calculation method comprises the steps that the variable quantity of each physical property parameter and mechanical parameter of a rock core compared with the non-soaked rock core is obtained, and a relational expression that the variable quantity of each parameter changes along with the soaking duration is obtained through index fitting; drawing a cross plot according to the static Poisson's ratio and the static Young's modulus and the dynamic Poisson's ratio and the dynamic Young's modulus, and performing linear fitting to obtain a relational expression of dynamic and static conversion; for the target well, dynamic parameters obtained through logging calculation are converted into static parameters, and then physical property parameters and mechanical parameters are corrected to be in the non-soaked state according to the soaked time; and constructing a fracture pressure calculation model, introducing the corrected physical property parameters and mechanical parameters, and calculating the fracture pressure of the carbonate rock. According to the method, drilling fluid invasion dynamic conditions are considered, and the bursting pressure calculation is more accurate.