Production Data Analysis and Practical Applications in the Sulige Tight Gas Reservoir, Ordos Basin, China

Successful exploitation of tight sandstone gas is one the important means to ensure “increasing reserves and production” oil initiative also ways national energy security. To further improve accuracy historical matching field data such as production bottom-hole pressure during process this type reservoir, in study, a new expression wellbore for uniform flow vertical fractured wells Laplace space based on point sink function model fractures reservoirs constructed. This innovation typical analysis plot Blasingame that uses numerical inversion decoupling mathematical equation. After analyzing derivative characteristics each stage curves, technique type-curve was proposed. In order verify correctness application value field, previous Sulige Gas Field China, set diagnostic chart reservoir formed. A case showed method diagnosis accurately evaluated development effect reservoirs, clarified scale effective sand bodies, provided technical support optimizing improving well pattern realizing efficient fields.