Practical interpretation of pressure tests of hydraulically fractured vertical wells with finite-conductivity in naturally fractured oil and gas formations

Abstract This paper presents a well test interpretation methodology using characteristic points and lines found on the pressure derivative versus time log–log plot for characterization of finite-conductivity fractured vertical hydrocarbon in double-porosity (heterogeneous) formation considering new practical analytical Laplacian model which require less computational have more accuracy than semi-analytical models. Some existing equations are to work model, expressions developed. The developed is successfully tested with synthetical examples.