摘要
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。
Due to the variation of geologic environment reservoir is often invaded by external water, thus, resulting in the property difference between connate water and formation water. Nanyang depression is such a typical reservoir invaded by water at the later development stage. Its structure is quite complex, fault block well developed, lithology complex, formation water salinity variable and oil zones universally exhibit low resistivity. A study on lithology characteristics and the changing law of formation water salinity in this area proves that the salinity difference between connate water and formation water of water zone is the basic cause of low resistivity. A corresponding calculation method for the parameters of formation water is put forward here. In combination with fine log interpretation technique, a new interpretation method is given for the reservoir mentioned above in terms of a deep understanding of the effect of complex lithology on the reservoir saturation and permeability.
出处
《测井技术》
CAS
CSCD
北大核心
2000年第1期36-41,46,共7页
Well Logging Technology
