petrofysik

Petrofysik is the scientific discipline that studies the physical properties of rocks and their interaction with fluids. It is crucial in various fields, particularly in petroleum exploration and production, as well as in the study of groundwater resources, geothermal energy, and carbon sequestration. Petrophysical properties include porosity, permeability, saturation, density, resistivity, and acoustic velocity.

Porosity refers to the amount of void space within a rock, which can be filled with fluids like oil, gas, or water. Permeability measures the ability of a rock to allow fluids to flow through it, a critical factor for the economic extraction of hydrocarbons. Saturation describes the proportion of the pore space occupied by a specific fluid. Density is the mass per unit volume of the rock, and resistivity indicates how well the rock conducts electricity, which is influenced by the presence of conductive fluids like saline water. Acoustic velocity, the speed at which seismic waves travel through the rock, provides information about its mechanical properties and fluid content.

Petrophysical analysis typically involves both laboratory measurements on rock core samples and downhole logging techniques. Core analysis provides direct, high-resolution data, while well logs offer continuous measurements throughout the borehole. Understanding these properties allows geoscientists and engineers to assess the potential for hydrocarbon accumulation, estimate reservoir volumes, predict production rates, and optimize extraction strategies. In broader applications, petrophysics informs the understanding of aquifer behavior and the feasibility of underground storage.