摘要
为提高目的层段油藏测井解释和有利区域预测的精度,利用砂岩薄片、铸体薄片和扫描电镜等技术手段并结合测井资料对吴起—铁边城地区长6储层的"四性"关系进行研究,认为长6储层属于典型的中孔低渗油藏;储层岩性主要为细粒长石砂岩为主,成分和结构成熟度均中等;岩性、物性的差异控制了储层油藏的富集程度,确定了储层物性下限的标准:孔隙度为7.5%,渗透率为0.1×10-3μm2,电性下限电阻率为12Ω.m,声波时差为214μs/m。从而为长6油藏进一步开发评价和增储上产,提供了有力的依据。
In order to improve the accuracy of well logging interpretation of target layer reservoirs and favourable region prediction, this paper conducted research on ＂four property relations＂ of Chang6 reservoir in Wuqi-Tiebiancheng area by using technical means of sandstone thin slice, casting sheet and scanning electron microscope, and combined with logging information. It is deemed that Chang6 reservoir is typical medium-porosity and low-permeability oil layer. The reservoir lithology is dominated by moder- ate-fine grain arkosic sandstone with its ingredient and structure of medium maturity. The distinction of lithology and physical prop- erty controll hydrocarbon accumulation degree and determine the lower limits standard of physical property as follows： porosity is 7.5 %, permeability is 0. 1 × 10-3μm2, resistivity of the lower limits of electric property is 12 Ω·m, acoustic interval transit-time is 214 us/m. The results provided reliable references for further development evaluation and stimulation of Chang6 reservoir.
出处
《油气藏评价与开发》
2011年第6期52-56,共5页
Petroleum Reservoir Evaluation and Development
关键词
长6储层
四性关系
有效厚度下限
铁边城地区
Chang6 reservoir, four property relations, net pay cut-off thickness, Tiebiancheng area
