摘要
东营凹陷的沙四上亚段和沙三中下亚段烃源岩主要分布在超压封闭系统内,大多不与储集层直接接触。本文根据岩心和薄片观察,明确了东营凹陷存在裂缝输导体系。东营凹陷的泥岩裂缝受构造应力和异常压力控制,在二者的耦合区,易于形成裂缝和微裂缝。根据泥岩裂缝的主控因素和形成条件,建立了裂缝输导体系输导能力量化模型。利用该模型可以对岩性圈闭含油性进行钻前定量预测。该成果对于陆相断陷盆地的岩性油藏勘探有一定指导作用。
Source rocks of Es4 Uand Es3M-Lin Dongying depression are mainly distributed in the overpressure closed system,and are not in direct contact with the reservoir.Based on the core and thin section observation,we know fracture transportation systems exist in Dongying depression.Mudstone fractures in Dongying depression are controlled by tectonic stress and abnormal pressure.Fractures and microfractues are easily formed in the coupling area of tectonic stress and abnormal pressure.According to the main controlling factors and formation conditions of mudstone fracture,a quantitative model of transporting ability for fracture transportation system was established.Oil potential of lithologic trap is predicted before drilling by this model.The results have a certain guiding role for the lithologic reservoir exploration of continental rift basin.
出处
《新疆石油天然气》
CAS
2014年第4期14-19,1,共6页
Xinjiang Oil & Gas
基金
中国石油化工股份有限公司"输导体系及输导能力研究"项目(P08037)
关键词
泥岩裂缝
输导能力
量化模型
东营凹陷
mudstone fracture
transporting ability
quantitative model
Dongying depression
