高精度层序地层格架内的地震沉积学应用——以哈萨克斯坦南图尔盖盆地A区为例  

Application of seismic sedimentology high-resolution sequence stratigraphic frameworks: Taking block A of South Turgay Basin,Kazakstan as an example

作　　者：毛治国[1,2] 樊太亮[3] 凌宗发 孙伟 李小江[6] 白斌[1,2] 沈武显[3] 蒋韧[3] 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]提高石油采收率国家重点实验室,北京100083 [3]中国地质大学(北京)能源学院,北京100083 [4]中国石油对外合作经理部,北京100007 [5]科麦奇中国有限公司,北京100016 [6]中国石化江汉石油管理局江汉分公司江汉采油厂,湖北潜江433124

出　　处：《中南大学学报（自然科学版）》2010年第6期2296-2304,共9页Journal of Central South University:Science and Technology

基　　金：国家重大科技专项(2008ZX0500102);国家重点基础研究发展计划项目(2009CB219304)

摘　　要：在高精度层序地层格架内,应用地震沉积学方法,通过90°相位转换、地层切片和分频处理,进行地震属性趋势和钻井综合分析,研究哈萨克斯坦南图尔盖盆地A区沉积岩岩性、沉积体系及其响应特征,确定沉积微相的边界与分布范围以及单砂体的体积、厚度与规模。研究结果表明：该区河流相发育,以河床滞留沉积、边滩、河漫滩、河漫湖泊等微相为主;不同频率对地震数据的相位等特性有不同响应,刻画地质体的横向不连续性能力也有所不同,频率为20~25 Hz时对河道砂体最敏感,在地层切片上完整清晰地刻画出河道边界、宽度、延伸长度及其平面几何形态。Using seismic sedimentology technologies,such as 90° phasing convertion,stratal slicing and frequency decomposition,lithology and facies of sedimentary rocks in block A of South Turgay Basin in Kazakstan were studied in the high-resolution sequence stratigraphic frameworks.And the boundary and distribution range of microfacies,even to the size,thickness and scale of single sand body were confirmed.The results show that the block A develops meandering river deposit,including four microfacies,i.e.,lag deposit,point bar deposit,flood-plain deposit and flood-lake deposit.And meanwhile,different frequency bands have different response features and different capabilities to characterize the horizontal discontinuity of geologic bodies in seimic data.The frequency decomposing stratal slicing（20-25 Hz） displays channel sand bodies clearly and characterizes channel boundary,width,extended length and plane geometric shape accurately.

关 键 词：高精度层序地层 地层切片 分频技术 南图尔盖盆地 

分 类 号：TE121.34[石油与天然气工程—油气勘探]