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符晓颖等 .后期水侵型复杂断块 /岩性油藏评价 .测井技术 ,2 0 0 0 ,2 4(1) :36～ 41油藏形成后 ,由于地质环境变化 ,储层往往会受到外部水系的侵入 ,从而造成原生水和水层地层水性质的差异。南阳凹陷是这种后期水侵现象的典型实例。其油藏结构复杂、断块发育、岩性与水性复杂多变 ,同时油层低阻现象普遍。通过对这一地区岩性特征和地层水变化规律研究 ,指出原生水和地层水差异是导致低阻储层的根本原因 ,提出了相应的计算方法。并结合精细测井解释技术 ,深入认识复杂岩性成份对储层饱和度和渗透性参数计算的影响 ,建立了适应于多断块、复杂岩性、复杂水性条件下的测井解释方法
Fu Xiaoying, et al. Evaluation of late-stage water-intrusion complex fault blocks / lithologic reservoirs. Logging Technology, 2000, 24 (1): 36-41 After the reservoir is formed, due to the geological environment changes, Intrusion of external water systems, resulting in differences in the nature of formation water between native and aquifer formations. Nanyang depression is a typical example of this late water intrusion. The reservoir structure is complex, fault block development, lithology and water complex and changeable, while low oil resistance phenomenon is widespread. Based on the study of the lithologic characteristics and the variation of formation water in this area, it is pointed out that the difference between primary water and formation water is the root cause of low resistivity reservoir, and the corresponding calculation method is proposed. In combination with the technique of fine log interpretation, the authors deeply understand the influence of complex lithologic components on the calculation of reservoir saturation and permeability parameters, and establish well logging interpretation methods suitable for multi-fault blocks, complex lithologies and complex water conditions