二连盆地洪浩尔舒特凹陷洪10区块精细沉积学研究

doi:10.3969/j.issn.1673-8926.2017.02.002

岩性油气藏 ›› 2017, Vol. 29 ›› Issue (2): 10–18.doi: 10.3969/j.issn.1673-8926.2017.02.002

二连盆地洪浩尔舒特凹陷洪10区块精细沉积学研究

朱筱敏^1,2, 董艳蕾², 张明君², 潘荣², 梁官忠³, 张久强³

1. 长江大学地球科学学院, 武汉 430100;
2. 中国石油大学(北京)地球科学学院, 北京 102249;
3. 中国石油华北油田分公司地球物理勘探研究院, 河北任丘 062552

收稿日期:2016-11-18 修回日期:2017-01-20 出版日期:2017-03-21 发布日期:2017-03-21
第一作者:朱筱敏(1960-),男,博士,教授,主要从事沉积储层方面的教学与科研工作。地址:(102249)北京市昌平区府学路18号中国石油大学(北京)地球科学学院。Email:xmzhu@cup.edu.cn。
基金资助:
国家自然科学基金项目“陆相坳陷湖盆浅水三角洲地震沉积学模型”（编号：41272133）、国家科技部油气重大专项子专题“坳陷湖盆地三维沉积体系模式与有利砂体分布规律研究”（编号：2011ZX05001-002-03）及中国石油华北油田校企合作项目“洪浩尔舒特凹陷层序地层及沉积相研究”（编号：HBYT-WTY-2011-JS-467）联合资助

Fine sedimentology of Hong 10 block in Honghaoershute Sag,Erlian Basin

ZHU Xiaomin^1,2, DONG Yanlei², ZHANG Mingjun², PAN Rong², LIANG Guanzhong³, ZHANG Jiuqiang³

1. College of Geosciences, Yangtze University, Wuhan 430100, China;
2. College of Geosciences, China University of Petroleum(Beijing), Beijing 102249, China;
3. Geophysical Exploration Research Institute, PetroChina Huabei Oilfield Company, Renqiu 062552, Hebei, China

Received:2016-11-18 Revised:2017-01-20 Online:2017-03-21 Published:2017-03-21

摘要/Abstract

摘要： 为了阐明二连盆地洪浩尔舒特凹陷重点区块沉积砂体分布特征以及更好地指导油气精细勘探，在层序地层学和现代沉积学理论指导下，依据地震反射终止关系、岩性、沉积构造及其序列以及测井相特征，将二连盆地洪浩尔舒特凹陷白垩系阿尔善组划分为包含低位、湖侵及高位体系域的一个完整三级层序。高位体系域主力产油层段可划分为3 个准层序组（砂组）和10 个准层序（小层），且每个小层均发育了近岸水下扇和辫状河三角洲。近岸水下扇岩性为块状砂砾岩，发育块状和递变层理、叠覆冲刷，与暗色泥岩伴生构成间断正韵律；辫状河三角洲岩性为发育中型、大型楔状交错层理及冲刷面的砂岩，呈间断正韵律。随着湖平面升降，近岸水下扇和辫状河三角洲发生进积和退积，其中阿尔善组Ⅱ砂组沉积时期物源供给充足，形成规模较大的砂体，因此Ⅱ砂组可作为洪10 区块阿尔善组的重点勘探层段。

Abstract: In order to demonstrate the distribution of sedimentary sandbodies and guide fine hydrocarbon exploration in key areas in Honghaoershute Sag,Erlian Basin,under the guidance of the theories of sequence stratigraphy and sediemntology,based on the seismic reflection termination,lithology,sedimentary structure and well log facies,the Cretaceous A'ershan Formation was divided into one third-order sequence including lowstand systems tract(LST),transgressive systems tract(TST)and highstand systems tract(HST)in Honghaoershute Sag. The oil producing interval of HST could be divided into three parasequence sets(sand groups)and ten parasequences(sublayers),and nearshore subaqueous fan and braided delta are developed. The nearshore subaqueous fans are characterized by coarse sandy conglomerate with massive and grading beddings,scour,and interbeded with dark mudstone;while the braided deltas developed sandstone with middle-large wedge-shaped cross bedding, scour surface and discontinuous rhythm. The nearshore subaqueous fan and braided delta will prograde toward central lake or retrograde toward parent rock region following the lake level up or down. Large sandbodies are developed in sand group Ⅱ of A'ershan Formation because of sufficient source supply,therefore,sand group Ⅱ can be taken as key strata for further exploration in Hong 10 block of Honghaoershute Sag.

中图分类号:

P618.13

朱筱敏, 董艳蕾, 张明君, 潘荣, 梁官忠, 张久强. 二连盆地洪浩尔舒特凹陷洪10区块精细沉积学研究[J]. 岩性油气藏, 2017, 29(2): 10–18.

ZHU Xiaomin, DONG Yanlei, ZHANG Mingjun, PAN Rong, LIANG Guanzhong, ZHANG Jiuqiang. Fine sedimentology of Hong 10 block in Honghaoershute Sag,Erlian Basin[J]. Lithologic Reservoirs, 2017, 29(2): 10–18.

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二连盆地洪浩尔舒特凹陷洪10区块精细沉积学研究

Fine sedimentology of Hong 10 block in Honghaoershute Sag,Erlian Basin

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