西部探区典型储层特征分析及物探技术思考

通过对西部新区各区块成藏条件和富集规律的分析认为!岩溶’深层白云岩’准噶尔盆地岩性油气藏’山前带复杂构造等是本区典型的储集体#首先从靶区的地质条件出发!对典型地质体的储层特征!特别是形成的地质条件进行了分析!在此基础上进行了物探技术思考#针对岩溶地质体的研究指出!高品质的三维叠前时间偏移地震资料是其识别的基础"深层白云岩储层成像应关注目的层以上地质体各向异性的影响"准噶尔盆地岩性油气藏勘探要求有较高的地震资料分辨率!储层预测识别中应加强各种物探’地质方法技术的综合应用"针对山前带复杂构造!应从高陡构造出发!探讨开展大面元三维地震勘探的可行性和必要性!同时在地震资料的解释过 程中!要加强应力机制探讨和地质建模分析!结合物探与地质开展高陡复杂构造区的地震资料解释

Characteristics analysis of typical reservoirs in west China and thinking on geophysical technology

From the analysis of reservoir forming conditions and hydrocarbon concentration laws,the author suggests that karst,deep dolomite,lithologic reservoir in Junggar Basin,and complex piedmont structures should be the typical reservoirs in the frontiers in west China.This paper discussed the characteristics of the typical reservoirs,and the geological conditions in which the reservoirs were formed.Based on the analysis,the author suggests some geophysical technologies applicable for these reservoirs.High quality 3-D prestack time migrated data are necessary to characterize karst geologic bodies.The anisotropy of overburden must be taken into account in imaging of deep dolomite reservoir.Seismic data of relatively high resolution is a necessity for exploration of lithological hydrocarbon reservoirs in Junggar Basin,and integrated geophysical and geological methods should be adopted in reservoir identification and prediction.For the complex piedmont structures,one should investigate the feasibility and necessity of large-bin-size 3-D seismic exploration.In seismic data interpretation,higher priority should be given to the analysis of stress mechanism and geological model building,and joint geophysical and geologic technologies should be adopted in interpretation of seismic data over areas of steep structures.