关键词: 埕南断裂带, 有效储层, 砂砾岩, 物性下限, 控制因素

Abstract: Combining with the physical property data in the study area, logging interpretation results and field test data, the distribution function curve method and the method of oil are used to calculate the physical property lower limit and depth of the effective reservoir in the lower member of Sha 3 of Chengnan fault zone. The physical relationship between them is fitted by software. On this basis, the controlling effects of burial depth, lithology, sedimentary facies and diagenesis on the development of effective reservoirs in the study area are discussed. The results show that the effective reservoir property in the study area by the factors such as buried depth, sedimentation and diagenesis control together, effective reservoir physical property lower limit decreases with increasing of buried depth, advantage for fine breccia facies and conglomeratic sandstone, due to the deep compaction cut hole depth obviously later dissolution as the main mechanism of hole, which is the main control factors of sedimentary facies. The effective reservoir in the study area are mainly distributed in the nearshore submarine fan, sublacustrine fan and fan delta, fan delta deposition is the most favorable sedimentary facies.

Key words: Chengnan fault zone, Effective reservoir, Glutenite, Physical property lower limit, Control factors