Quantitative Research Of Factors Affecting Clastic Reservoir Properties

Accumulation mechanism research of oil and gas include many reservoir elements. In the quantitative recovery process of hydrocarbon accumulation, resumption of reservoir changes in geological history, especially the period of accumulation, is of great importance and also is very difficult. The forming of reservoirs is a long and complex process, which is the product of the interaction of various geological factors. Lithology, sedimentary facies and diagenes are the three principal aspects to be considered in reservoir evolution research.The advanced equipment for petrology research is used in our experiment. First, experimental factors are proposed according to microscopic researches of corresponding reservoir samples (fan delta, delta, turbidite fan, river, etc.) in Jiyang sag, then ratio sand samples are used for experiment. Lithology factors of various deposition facies (sizes, sorting, frictional extent of grains) are based researches on more than 20 core wells and analysis of reservoirs in more than 500 wells. Some of the samples are from core, others are taken from Rizhao, Kenli section of the Yellow River, and Qingdao sedimentary area.On the basis of preliminary data analysis, eight different groups, a total of 40 experiments, are designed according to geological parameters (lithology, sedimentary type, temperature, geological time. fluid conditions), and 40 experimental curves are obtained.Through a series of simulation, the characteristics and influencing factors of reservoir evolution are finally confirmed. Research on the evolution of different types of reservoir will help restore the evolution of pore in geological history, and forecast favorable porosity belt, thus guiding the oil and gas exploration in Shengli oilfield.