Buried Hill Reservoir Capacity Evaluation Research

Carbonate reservoir in the global distribution of a wide range of statistics on the world’s 236 large-scale oil and gas fields, 96 for carbonate reservoir, accounting for about 40%, and the reserves are large in scale, high-yield oil and gas reservoirs of carbonate rocks for oil and gas possession, and its reserves total about 50% of reserves, production output accounts for about 65% of carbonate reservoir in more than 30% of the cracks- cave-type reservoir, of the reservoir’s main reservoir space to structure resulting from tectonic deformation and karst cracks formed hole, holes, joints mainly large cave which is the most important reservoir space, cracks in the reservoir is the main space, is the main flow channel. In our country, this type of reservoir has a wide range of distribution, since the 20 th century, since the 70 s, China in the Shengli Oilfield, Liaohe Oilfield, Huabei Oilfield and have discovered and developed more than 30 carbonate buried hill reservoir, the last century the late nineties Tahe Oilfield found. China’s oil and gas resources in marine carbonate rocks larger than 300 × 108 t of oil equivalent, oil resources of about 150 × 108 t, mainly located in the Tarim and North China, but only found the rate of 8%. Fractured-vuggy reservoir which proved reserves accounted for 2/3, is the future of the main areas of increased storage.Reservoir rock between the cracks and three-phase flow mechanism to improve the study and in-depth more and more people in the further study of the basis of the above-mentioned mechanism is also carried out a number of basic concepts of research, such as imbibition oil recovery, imbibition half-life, imbibition rate, the degree of block and recovery time, which has been in the laboratory, the mechanism has been mostly at the scene to verify the information and experience.The domestic front, with 70 since the early 20 th century domestic carbonate reservoir development, while the practice has experienced, while understanding the development side, while the adjustment process of development in the field have done a lot of work, accumulated a wealth of experience, especially in mountain fog Renqiu oil reservoir level has entered the development of similar foreign advanced oil field development.