风化壳古岩溶储层地震预测方法-以川东北元坝地区雷口坡组四段为例  

Seismic prediction of weathering crust palaeokarst reservoir: a study on the karst reservoir of the 4^(th) Leikoupo Formation of Yuanba area in Northeast Sichuan

作　　者：陈刚[1] 张玺华[2] 陈勇 林良彪[1,4] 文龙[2] 林凯 

机构地区：[1]成都理工大学沉积地质研究院,四川成都610059 [2]中国石油西南油气田分公司勘探开发研究院,四川成都610041 [3]中国石油化工集团南京物探研究院,江苏南京210000 [4]油气藏地质及开发工程国家重点实验室,四川成都610059

出　　处：《煤田地质与勘探》2015年第4期85-89,93,共6页Coal Geology & Exploration

基　　金：国家自然科学基金项目(40739901);国家科技重大专项课题(2011ZX05002-004);高等学校博士学科点专项科研基金项目(20115122110002)

摘　　要：川东北元坝地区雷口坡组四段古岩溶储层埋藏深、非均质性强,常规地震储层预测方法难以解释储层的分布发育情况。元坝地区位于岩溶古地貌的岩溶斜坡区,微地貌对岩溶储层分布起到控制作用,其中岩溶残丘是岩溶斜坡上最有利于岩溶储层形成的微地貌单元,且发育于岩溶残丘顶部的铝质泥岩有利于气藏的保存。运用"印模法"、地震反射结构分析等方法,利用三维地震资料进行古地貌分析,采用基于匹配追踪时频分析的低频能量增强油气检测技术,最终形成了一整套古岩溶储层地震预测方法,降低了勘探风险。The karst reservoir of the 4th Leikoupo Formation of Yuanba area in Northeast Sichuan has the deep buried depth and the strong heterogeneity character, conventional seismic reservoir prediction method is difficult to explain the distribution of reservoir development, and the prediction of distribution of reservoir is an important exploration difficulty. Yuanba area is located in the karst paleogeomorphology karst slope area, the landscape control the karst reservoir distri-bution, the karst monadnock in high slope is most beneficial to form karst reservoiration, and the aluminum shale in the top of the karst monadnock is conducive to the preservation of gas reservoir. In this paper, the " Impression method", seismic reflection structure analysis in the study area are integrated to make 3D seismic paleogeomorphology by using the oil and gas detection technology analysis, based on the time frequency analysis, finally a complete set of paleokarst reservoir prediction method was formed, thereby reducing the risk of exploration.

关 键 词：古岩溶 岩溶残丘 古地貌分析 低频能量增强 储层预测 

分 类 号：TU44[建筑科学—岩土工程]