古地理学报2011，Vol.13Issue(1)：55-74,20.
陆相断陷盆地相控油气特征及其基本模式
Characteristics and basic model of facies controlling oil and gas in continental fault basin
摘要
Abstract
Geofacies are the material expression of the conditions to form sediments (sedimentary rock ) in sedimentary formation. Geofacies are divided into four hierarchies from macro- to micro-perspectires, namely structural facies, sedimentary facies, lithologic facies and petrophysical facies. The hydrocarbon control function of the geofacies in different hierarchies exhibits differently. According to this research, different tectonic units and sedimentary facies in a terrestrial rifted basin control the formation and distribution of different types of hydrocarbon reservoir; the critical porosity and permeability of hydrocarbon reservoir of different tectonic units and sedimentary facies decrease as the buried depth increases; without considering the background conditions of tectonic and sedimentary facies, it is impossible to determine and evaluate the effective reservoirs according to the absolute conditions of porosity and permeability. Sand rock strata with well-sized sediment grain and favorable facies control the accumulation of oil and gas, while under the same conditions, reservoirs with relatively high porosity and permeability control the accumulation of oil and gas. Reservoir control with favorable facies and relatively high porosity and permeability is the basic control pattern of facies-controlled hydrocarbon accumulation, which can be used to forecast the favorable area for hydrocarbon accumulation.关键词
中国陆相盆地/断陷盆地/地质相/油气成藏/油气藏分布预测Key words
continental basin in China/ fault basin/ geofacies/ hydrocarbon generation and expulsion/ prediction of the oil and gas reservoir distribution分类
能源科技引用本文复制引用
庞雄奇,李丕龙,陈冬霞,张善文,张俊,于轶星..陆相断陷盆地相控油气特征及其基本模式[J].古地理学报,2011,13(1):55-74,20.基金项目
国家重大基础研究规划973项目(编号:2006CB202300)资助 （编号:2006CB202300）
