兴隆台潜山基岩油藏储层分类评价

基岩油藏储集空间以裂缝为主,裂缝发育段预测的准确程度决定了基岩油藏勘探开发的效果.针对基岩油藏储层非均质性强、裂缝发育主控因素多,导致储层预测难度大等问题,以辽河油田兴隆台潜山为例,综合分析钻井、录井、测井、地震等多种资料,识别裂缝发育段地质、地震、产能特征.结果表明,潜山内幕储层可划分为3类:酸性侵入岩、混合花岗岩为...

Classification and Evaluation of Bedrock Reservoirs in Xinglongtai Buried Hill

The reservoir space of bedrock oil reservoir is dominated by fractures, and the effect of exploration and development depends on the precision of fracture-developed interval prediction. In view of much difficulties in reservoir prediction and other problems due to strong heterogeneity of bedrock reservoirs and multiple main controlling factors of fracture development, based on a study case of Xinglongtai buried hill in Liaohe Oilfield, this paper briefly analyzed comprehensively the drilling, logging, testing and seismic data, to identify the geological, seismic and productivity characteristics of fracture-developed zones. The results showed that the reservoirs of inner buried hill were divided into three types: acid intrusive rock and migmatitic granite were the most dominant lithology in the inner buried hill, with the most developed fractures and a certain stratification, followed by migmatitic gneiss and neutral intrusive roc, and next by gneiss. Basic intrusive rocks and amphibole were non-reservoirs.On the basis of fracture identification, the three-dimensional distribution pattern of favorable reservoirs was accurately characterized, which could effectively improve the reservoir penetration rate and production effect of development wells. The study results are an important reference for the development of similar reservoirs at home and abroad.