the low-middle permeability formation protection

Abnormally low formation pressure

aquifer with low permeability

characteristics of low permeability and resistivit

characteristics of low permeability and resistivity reservoirs

clay shale with low permeability

coal reserve of low permeability gas

coal with low permeability

complicated lowpermeability media

DEEP LOW PERMEABILITY RESERVOIR

especially low permeability reservoir

Extra Low-Permeability

EXTRA-LOW PERMEABILITY

Extra-Low Permeability Reservoir

extra-low porosity and extra-low permeability re-servoir

extra-low-permeability reservoirs

Extremely Low Permeability

extremely low permeability oil reservoir

extremely low permeability reservoir with fracture