储层裂缝的测井识别及其地质建模研究  

Evaluating Fractures by Logging Data and Its Modeling Technology Studies

作　　者：李毓[1] 

机构地区：[1]中国石化西南油气分公司勘探开发研究院,四川成都610081

出　　处：《测井技术》2009年第6期575-578,共4页Well Logging Technology

基　　金：国家科技重大专项资助(2008ZX05002-004-001)

摘　　要：利用常规测井及非常规测井裂缝识别技术,结合岩心刻度测井,开展储层裂缝测井响应特征分析与裂缝测井的定性识别。通过储层裂缝特征参数如裂缝张开度、裂缝孔隙度、裂缝渗透率的计算,建立评价储层裂缝发育程度的裂缝特征参数分布范围。在此基础上进行裂缝相划分,通过岩相和构造曲率等影响储层裂缝发育的地质因素进行趋势控制。采用Co-kriging和Sequential Indicator Simulation等三维地质随机建模技术,提出2种裂缝模型优选方法,最终得到了气藏石炭系储层裂缝分布特征及规律。这一研究对后期气藏产能评价、储量评价和进行储层压裂及酸化等具有重要的指导意义。Analyzed and studied are the logging responses of fractures in reservoir by combining conventional and unconventional logging methods with cores.The parameters of logging responses about distinguishing fractures qualitatively and quantitatively are put forward.By calculating the parameters of charactering fractures（including width,porosity,permeability of fractures）,combined with actual observation of core and test,the growing of fractures is evaluated and the range of parameters charactering fractures is determined.And then,on the base of dividing fracture-facies,considering the tendency control of the geological factors including lithofacies and structure curvature,which influence the growing extent of fractures in reservoir,the 3D fracture-modeling methods including co-kriging and Sequential Indicator Simulation are finally used to establish fracture models and study the characteristics and laws of distribution of fractures existing in carboniferous gas reservoir of the east of Sichuan province after fracture-models optimization.The conclusions can be applied to evaluate production ability and reserves scale,or suggested to select one layer of reservoir to do hydraulic fracturing and acidulation.

关 键 词：测井解释 储层裂缝 协克里金 随机建模 模型优选 

分 类 号：TE122.2[石油与天然气工程—油气勘探]