期刊文献+

阿尔金南斜坡东段鼻状构造带构造演化特征及找气方向 预览 被引量:5

Evolutional history and gas exploration direction of the nose-like structural belt in the eastern part of south Altun slope, Qaidam Basin
在线阅读 下载PDF
分享 导出
摘要 2011年,中国石油青海油田公司在东坪构造上钻探东坪1井,于古新统一始新统路乐河组砂砾岩中钻获工业气流,证实柴达木盆地阿尔金斜坡东段鼻状构造带存在油气资源。为寻找下一步的油气勘探重点区块,利用最新处理的地震资料及钻井数据,剖析了该区的地质结构,将鼻状构造带自造山带向盆地中央方向划分为4个部分(依次为山前高位断阶带,中部斜坡区,低位扭动隆起区和深部凹陷区),这4个部分彼此分开,却又相互关联。在此基础上,根据区域地质资料及构造应力场变化情况,将鼻状构造带自新生代以来的构造演化分为以下3期:①喜马拉雅早期(K—N1末),由于构造反转及右行压扭走滑运动,形成I期北西向断裂,控制了深凹陷与古隆起的展布;②喜马拉雅中期(N2^1-N2^3),阿尔金断裂转为左行压扭走滑运动,形成Ⅱ期北东向断裂,发育低位扭动隆起;③喜马拉雅晚期(N2^3末-Q),阿尔金断裂发生强烈逆冲推覆,形成Ⅲ期平行于山前的叠瓦逆冲断层,并产生高位断阶及中部斜坡。最后,通过对生储盖组合和成藏条件的分析,指出该区高位断阶带和低位扭动隆起区为下一步油气勘探的有利区带。 In 2011, industrial gas flow in the Paleocene-Eocene Lulehe Formation was obtained in the exploratory well Dongping-1 on the Dongping structure drilled by Petrochina Qinghai Oilfield Company, and this verifies the oil/gas potential of the nose-like structural belt in the eastern part of south Altun slope in the Qaidam Basin. In order to identify key target areas for future exploration, the newly processed seismic data and drilling information were used to analyze the geologic structure in this study area. The nose-like structure belt was divided into 4 zones from the orogenic belt to the center of this basin, namely piedmont high fault terrace zone, middle slope zone, low wrench uplift zone and deep depressed zone. Based on the regional geologic data and tectonic stress field variation, the evolution of the nose-like structure zone since the Cenozoic was divided into 3 periods. First, during the Early Himalayan Tectonic Period (from K to the end of N1 ), the tecton- ic inversion and right lateral compress shear strike slip resulted in the stage-I NW-trending fault, which controlled the distribution of deep sags and paleo-uplifts. Second, during the Middle Himalayan Tectonic Period (from Nz1 to N2 a), the activity of the Altun fault was trans- formed into left lateral compress-shear strike slip, resulting in the formation of the stage-lI NE-trending fault and development of low wrench uplift. Third, during the Irate Himalayan Tectonic Period (from the end of Nza to Q), the Altun fault experienced strong overthrusting, leading to the formation of the stage-]]I imbricated thrust in parallel to the piedmont as well as the high fault terrace and middle slope. In the end, the analysis of source reservoir cap combination and hydrocarbon accumulation conditions reveal that the high fault terrace zone and low wrench uplift zone are favorable target areas for future exploration.
作者 马新民 赵明君 石亚军 赵健 马峰 乐幸福 魏志福 Ma Xinmin1 , Zhao Mingjun2 , Shi Yajun1 , Zhao Jian2 , Ma Feng1 , Le Xingfu1 , Wei Zhifu1 Northwest Branch of Petroleum Exploration ~ Development Research Institute, PetroChina, Lanzhou, nsu 730020, China; 2. Research Institute of Petroleum Eacploration and Development, Qinghai Oil field mpany, PetroChina, Dunhuang, Gansu 736200, China)
出处 《天然气工业》 EI CAS CSCD 北大核心 2013年第5期19-23,共5页 Natural Gas Industry
基金 中国石油天然气股份有限公司重大科技项目“柴达木盆地石油勘探领域评价与目标优选”(编号:2011E-0301) 国家科技重大专项(编号:2011ZX05003006).
关键词 鼻状构造带 地质结构 构造演化 成藏条件 勘探方向 古近纪-新近纪 生储盖组合 阿尔金造山带 nose-like structure, geologic structure, structural evolution, hydrocarbon accumulation condition, exploration direction, Paleogene-Neogene, source reservoir cap combination, Altun orogenic zone, Qaidam Basin
作者简介 马新民,1980年生,工程师;从事含油气构造地质学研究工作。地址:(730020)甘肃省兰州市城关区雁儿湾路535号。电话:(0931)8686132。E-mail:mxm990030@163.com
  • 相关文献

参考文献20

二级参考文献365

共引文献236

同被引文献122

引证文献5

二级引证文献15

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈