油气地质

鄂尔多斯盆地姬塬地区长8 油层组物源分析

  • 张敏 ,
  • 王正允 ,
  • 王丽云 ,
  • 张紫光 ,
  • 胥博文
展开
  • 1. 成都理工大学“油气藏地质及开发工程”国家重点实验室; 2.中国石油长庆油田分公司勘探开发研究院
王纹婷,1983 年生,女,成都理工大学在读硕士研究生,专业为沉积学和石油地质学。地址:(610059)四川省成都市成华区二仙桥 东三路1 号成都理工大学“油气藏地质及开发工程”国家重点实验室。E-mail:sweety431@sina.com.cn

网络出版日期: 2009-12-16

基金资助

国家重大专项“大型油气田及煤层气开发”(编号“2008ZX05000-003-01)部分成果。

Provenance analysis of the 8th oil-bearing member of Yanchang Formation,Upper Triassic,Jiyuan area,Ordos Basin

  • ZHANG Min ,
  • WANG Zhengyun ,
  • WANG Liyun ,
  • ZHANG Ziguang ,
  • XU Bowen
Expand
  • 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059,China; 2. Research Institute of Exploration and Development, Changqing Oilfield Company of CNPC, Xi’an 710021, China

Online published: 2009-12-16

摘要

位于鄂尔多斯盆地的姬塬地区上三叠统延长组长8 油层组,具有四周均发育三角洲沉积和多物源供给的岩相古地理特征。应用储集砂岩薄片鉴定和骨架碎屑组分、重矿物类型及其组合类型的分析结果,结合沉积构造、古生物及砂岩分布三次趋势面分析等技术方法,对姬塬地区长8 油层组物源特征进行了综合分析,并认为:①长8 油层组沉积期该区物源来自东北、西北及西南3 个方向,以西北和东北为主物源方向,不同物源方向的砂体于研究区中部的半深湖区发生汇集;②不同方向物源区的母岩性质有差别,西北方向的物源区母岩为火山岩、浅—中级变质岩组合,东北方向主要为火山岩-低级变质岩组合,西南方向主要为变质岩-沉积岩组合;③长8 油层组砂体和岩性油藏的展布都具有同物源方向延伸的特点。上述研究成果为姬塬地区长8 油层组砂体和岩性油藏预测提供了地质依据。

本文引用格式

张敏 , 王正允 , 王丽云 , 张紫光 , 胥博文 . 鄂尔多斯盆地姬塬地区长8 油层组物源分析[J]. 岩性油气藏, 2009 , 21(4) : 41 -46 . DOI: 10.3969/j.issn.1673-8926.2009.04.008

Abstract

During the deposition of the 8th oil-bearing member of Yanchang Formation, Upper Triassic, deltaic depositional systems were developed and muti-provenances were provided around Jiyuan area, which was located in the middle-western part ofOrdos Basin. Based on the analysis of thin sections,detrital framework grains and heavyminerals and their associations, and with the combination of sedimentary structures, paleontology and the tripartite trend surface analysis of sandbody distributions, the provenance of the 8th member in Yanchang Formation was studied, and the following results were concluded: ①The sources during the deposition of the 8th oil-bearing member of Yanchang Formation were fromnortheast, northwest and south.②There were certain differences in the nature of source rocks. The northwest source area was dominated by volcanic rocks and light tomiddle metamorphic rocks association, the northeast by volcanic rocks-lower metamorphic rocks association, and the southwest by metamorphic rocks-sedimentary rocks association.③The distribution directions of sand bodies were same to that of the lithologic reservoirs. The above results would provide important geological basis for the prediction of sand bodies and lithologic reservoirs in the 8th oil-bearing member ofYanchang Formation.

参考文献

[1] 罗建强,何忠明.鄂尔多斯盆地中生代构造演化特征及油气分布[J].地质与资源,2008,17(2):135-138.
[2] 黎民,余华琪,齐小平,等.利用非地震资料综合研究鄂尔多斯盆地姬塬地区油气有利区[J].中国石油勘探,2002,7(4):65-69.
[3] 罗顺社,银晓.鄂尔多斯盆地姬塬地区延长组长8 沉积相的研究[J].石油天然气学报,2008,30(4):5-9 .
[4] 聂永生,田景春,夏青松.鄂尔多斯盆地白豹—姬塬地区上三叠统延长组物源分析[J].油气地质与采收率,2004,11(5):4-7.
[5] 韩永林,王成玉,王海红,等.姬塬地区长8 油层组浅水三角洲沉积特征[J].沉积学报,2009,27(4):45-52.
[6] 张东阳.鄂尔多斯盆地三叠系延长组长8 油层组沉积相研究[D].西安:西北大学,2008.
[7] 银晓,罗顺社,李鑫,等.鄂尔多斯盆地姬塬地区延长组长8 时期物源分析[J].岩性油气藏,2008,20(3):59-63.
[8] 楼章华,卢庆梅,蔡希源,等.湖平面升降对浅水三角洲前缘砂体形态的影响[J].沉积学报,1998,16(4):27-31.
[9] 邹才能,赵文智,张兴阳,等.大型敞流坳陷湖盆浅水三角洲与湖盆中心砂体的形成与分布[J].地质学报,2008,82(6):813-825.
[10] 姚光庆,马正,赵彦超,等.浅水三角洲分流河道砂体储层特征[J].石油学报,1995,16(1):24-31.
[11] 文华国,郑荣才,陈志华,等.鄂尔多斯盆地耿湾地区长6 油层组古盐度计算与古环境分析[J].矿物岩石,2008,28(1):114-120.
[12] 赵澄林, 朱筱敏.沉积岩石学[M].北京:石油工业出版社,2001:91-92.
[13] 史建南,郑荣才,韩永林,等.鄂尔多斯盆地姬塬地区长8 油层组岩性油藏成藏机理研究[J].岩性油气藏,2009,21(3):129-133.
文章导航

/