苏北盆地陈堡砂岩储层裂缝特征及模糊识别技术Fracture characteristics and fuzzy recognition techniques of Chenbao sand reservoir in Subei basin
邵先杰
SHAO Xian-jie (Yanshan University
摘要(Abstract)：
陈堡油田陈2断块砂岩储层裂缝以水平缝和低角度缝为主,裂缝发育密度受岩性、厚度、埋藏深度和构造位置影响比较明显。粉砂岩中裂缝密度最大,薄砂层中裂缝密度比厚砂层大,浅部地层裂缝密度比深部地层大,鼻状构造高点处裂缝最发育。水平缝和低角度缝在声波时差、微侧向和微电极曲线上具有一定响应,建立了响应模型,利用模糊数学方法建立了裂缝识别体系,初步实现了裂缝的定量解释。
Horizontal and low angle fractures are developed in sand reservoir of fault block Chen 2 in Chenbao oilfield.Fractures development density is mainly controlled by lithology,thickness,buried depth and structural location.The fracture density in siltstone is the biggest,the fracture density in thin sand layer is bigger than that in thick sand layer,that in shallow layer is bigger than that in deep formation and in nose structural high the fracture is the most developed.For horizontal fractures and low angle fractures there are certain response in acoustic travel time,micro sideway curve and microelectrode curve.The response model is built.A system of distinguishing fractures is established based on fuzzy mathematic method.With this method,the preliminary qualitative interpretation to fractures can be achived.
关键词(KeyWords)：
苏北盆地;裂缝;测井响应;模糊数学;砂岩储层
Subei basin;fracture;logging response;fuzzy mathematics;sand reservoir
基金项目(Foundation): 2001年中国石化集团总公司“十条龙”科技攻关项目“复杂断块油田提高采收率技术研究”(P98025)部分研究成果
作者(Author):
邵先杰
SHAO Xian-jie (Yanshan University
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