基于井震裂缝识别敏感性参数模型的碳酸盐岩储层裂缝预测方法  

A method for predicting fractures in carbonate reservoirs based on fracture identification-sensitive log-seismic parameter model

作　　者：王志伟[1,2] 张凯[1] 武群虎[2] 张本华[2] 于世娜[2] 张尊香[2] 吴彦佳 WANG Zhiwei;ZHANG Kai;WU Qunhu;ZHANG Benhua;YU Shina;ZHANG Zunxiang;WU Yanjia(School of Petroleum Engineering,China University of Petroleum(East China),Qingdao 266580,China;Haiyang Oil Production Plant,Shengli Oilfield Sub-Company,SINOPEC,Dongying 257237,China)

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]中国石化胜利油田分公司海洋采油厂,山东东营257237

出　　处：《煤田地质与勘探》2023年第6期163-174,共12页Coal Geology & Exploration

摘　　要：碳酸盐岩储层裂缝发育、非均质性强,单一测井或地震方法识别裂缝存在局限性,为此,提出了基于井震裂缝识别敏感性参数模型的碳酸盐岩储层裂缝预测方法。基于岩石物理分析,根据成像测井资料以及井点裂缝解释成果,建立了分层段测井井点裂缝识别敏感性参数(FISP)模型;以基于地质和测井多井解释结果划分的优质裂缝储层为判别依据,优选井旁道地震属性,以测井井点裂缝识别敏感性参数为参照,构建了基于井旁道地震属性的裂缝识别敏感性参数(FISPSA)模型;建立了基于测井、地震裂缝识别敏感性参数模型的储层裂缝预测技术路线和方法流程,实现了裂缝发育三维地震预测,形成了适用于潜山碳酸盐岩油藏的基于井震裂缝识别敏感性参数模型的三维地震裂缝预测方法。渤海湾盆地胜利油田埕岛潜山油藏实际应用取得了与实钻裂缝吻合一致的预测效果,表明了基于井震裂缝识别敏感性参数模型的三维地震裂缝预测方法的可行性。研究成果在同类地区裂缝性潜山油藏裂缝检测具有广泛的推广应用价值。Carbonate reservoirs show fractures and strong heterogeneity,leading to limited applications of a single logging or seismic method in fracture identification.Therefore,this study proposed a method for predicting fractures in carbonate reservoirs based on a fracture identification-sensitive log-seismic parameter(FISLSP)model,and the details are as follows:(1)Based on petrophysical analysis results,as well as formation micro-imaging(FMI)logs and the interpretations of fractures at well locations,this study established a segmental fracture identification-sensitive parameter(FISP)model for fractures at well locations;(2)Using the optimal seismic attributes of near-well seismic traces determined based on the high-quality fractured reservoirs classified according to geological and log interpretation results,this study constructed a FISP model based on the seismic attributes of near-well seismic traces(FISPSA);(3)Using logs combined with seismic attributes,this study established the technology roadmap,method,and procedure for reservoir fracture prediction based on a FISLSP model,achieved the 3D seismic prediction of fractures,and developed a FISLSP model-based 3D seismic fracture prediction method,which applies to buried-hill carbonate oil reservoirs.This method was applied to the prediction of fractures in the Chengdao buried-hill reservoirs of the Shengli Oilfield in the Bohai Bay Basin.The predicted results were consistent with fractures revealed through drilling,indicating that the new method is feasible.The results of this study warrant wide application to the fracture detection of similar buried-hill reservoirs.

关 键 词：裂缝识别敏感性参数 地震属性 井震结合 岩石物理分析 储层裂缝预测 

分 类 号：TE257[石油与天然气工程—油气井工程] P631[天文地球—地质矿产勘探]