迈陈凹陷三角洲地层地震沉积学解释  

Seismic Sedimentology Interpretation of Delta Strata in Maichen Depression

作　　者：刘宏宇[1,2] 张宪国[3] 林承焰[3] 张涛[4] 李帅[5] 

机构地区：[1]中国矿业大学(北京)地球科学与测绘工程学院,北京海淀100083 [2]中国石化江苏油田分公司地质科学研究院,江苏扬州225009 [3]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [4]山东科技大学地质科学与工程学院,山东青岛266590 [5]中国石化中原油田采油四厂,河南濮阳457000

出　　处：《西南石油大学学报（自然科学版）》2013年第3期31-38,共8页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家自然科学基金项目(41202092);中国博士后科学基金(2012M521366);中央高校基本科研业务费专项资金(11CX04008A)

摘　　要：以迈陈凹陷古近系流三段三角洲地层为例,探索适合滚动勘探阶段井震结合的地震沉积学研究方法。流三段为湖泊三角洲沉积环境,发育三角洲前缘水下分流河道、水下分流河口砂坝、席状砂等沉积微相类型。根据研究区单砂体厚度小、平面差异大的特点,构造新的地震属性类型,通过多属性优选和井点标定的属性定量分析预测砂岩分布,建立平面沉积微相的初步认识。利用相位转换剖面和地震相分析落实相边界位置,实现沉积微相的精细描述。该方法对其他地区滚动勘探阶段的沉积微相研究具有指导意义。Taking Paleogene delta strata of Liusan Formation in Maichen Depression as an example, this paper probes into seismic sedimentology study method suitable for progressive exploration stage. The sedimentary environment of the study strata is lacustrine delta with underwater distributary channel, distributary channel mouth bar, sand sheet and so on. A new seismic attribute is created due to the thin and lateral-instahle sand bodies, and sand distribution is predicted with multi-attributes selection and well-calculated quantitative seismic attributes analysis, and thus a preliminary understanding of the microfacies distribution is achieved. Then phase-rotating seismic profiles and classical seismic facies analysis are employed to get fine sedimentary facies distribution. This study builds a practical seismic sedimentology study method and workflow which can be used in microfacies study of progressive exoloration stage in other oil fields.

关 键 词：滚动勘探 地震沉积学 三角洲前缘 迈陈凹陷 流三段 

分 类 号：TE122[石油与天然气工程—油气勘探]