METHOD TO DETECT PERMEABILITY OF TERRIGENOUS CONTAINER ROCKS Russian patent published in 2011 - IPC G01V11/00 

FIELD: mining.

SUBSTANCE: core is picked, permeability is identified in the core. Electric logging of wells is carried out, and relative amplitude of natural electric potentials (PS) is identified. Correlation dependence of the relative PS amplitude is built on the core permeability. Additionally radioactive logging is carried out; hydrogen content is measured in the solid phase of the core, as well as its diffusion-adsorption activity, which is used to calculate the relative PS amplitude. Then kaolin content is measured in the core, using which, groups of container rocks are identified. The ratio of the solid phase hydrogen content to the relative PS amplitude in the core is calculated for each identified group. The correlation relation of this ratio and kaolin content in the core is built, and the dependence α_nc=f(K_np) in the core is built for each identified group of containers. Then the solid phase hydrogen content ratio to the relative PS amplitude calculated based on the data of wells geophysical survey (GIS) is built, and using this ratio, groups of container rocks are identified. Permeability of container rocks is identified using values α_nc calculated by GIS data, using dependence α_nc=f(K_np) established in the core.

EFFECT: increased accuracy of terrigenous container rocks permeability detection.

4 dwg