油气地质与采收率2011，Vol.18Issue(6)：6-8,13,4.
沾化凹陷仓储层的孔隙度和埋深对油气运聚的影响
摘要
Abstract
In order to reveal the connection between porosity and burial depth of storage layer and hydrocarbon migration-accumulation , the study of storage layer during pool-forming period in Zhanhua depression is developed without considering the episodic hydrocarbon expulsion. According to the study of basic characteristics of current storage layer, such as thickness, physical properties and burial depth, and by means of the analysis of depositional and burial history, the depth and porosity evolution function of storage layer is established to restore the paleoburial depth and paleoporosity of storage layer during pool-forming period, and the buoyancy force and capillary pressure that oil possessed could be calculated. The condition of storage layer can be categorized by difference between buoyancy force and capillary pressure, that is, the positive difference shows that oil in storage layer is primarily migrating, while the negative one shows that carpet-forming or pool-forming is the main condition. So, the function of current storage layer to hydrocarbon migration and accumulation can be revealed in the way of determining the present boundary, by which is deduced the porosity and depth boundary of oil migration and pool-forming in storage layer during pool-forming period. The threshold of porosity and depth are 34.5% and 1 300 m respectively during pool-forming period, and the present are 30.9% and 1789 m.关键词
仓储层/网毯式油气成藏体系/毛管压力/浮力/沾化凹陷Key words
storage layer/meshwork-carpet hydrocarbon accumulation/capillary pressure/buoyancy force/Zhanhua depression分类
能源科技引用本文复制引用
吕希学..沾化凹陷仓储层的孔隙度和埋深对油气运聚的影响[J].油气地质与采收率,2011,18(6):6-8,13,4.基金项目
中国石化股份有限公司项目“陆相断陷盆地油气成藏过程定量研究”(P06016). （P06016）
