Analysis and Processing of the Results of Laboratory Experiments to Investigate Fracture Permeability Changes Under the Influence of Mechanochemical Effects of Water Injection into Carbonate Reservoir

摘要

The paper describes the results of laboratory experiments with fractured core samples. Fresh and distilled water was filtered through samples, and the samples were exposed to variable effective stresses. The experiments showed significant change of sample permeability caused by coupled mechanical and chemical (mechanochemical) effects. The results of studies were processed for determination of regularities in permeability variation in the process of water injection and the effective stress impact. As the result, the authors received the dependences of change of the fracture width on the fracture wall contact area, that can be used for prediction of change of the fractured reservoir permeability.