MODEL ANALYSIS AND DEVELOPMENT OF LOW-PERMEABILITY MASSIVE SANDSTONE RESERVOIRS——CASE STUDY OF M-RESERVOIR, LAOJUNMIAO OILFIELD, YUMEN, GANSU PROVINCE

The development of low-permeability massive sandstone reservoirs is a difficult problem unsolved around the world. M-layer of Laojunmiao Oilfield, Yumen, Gansu Province is typical of reservoirs of this kind. It is 60—70 m thick, bearing oil all through the layer. AI-