Characterization of Depositional System Tract forExploration of Lithologic Pools——An example of Qaidan basin

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• 出版年：2004
• 作者：WU Yin-ye；JIANG Bo；GUO Bin-cheng；ZHANG Qi-quan；LI Jun
• 单位1：Research Institute of Petroleum Exploration and Development
• 出生年：1964
• 语种：中文
• 作者关键词：sequence strangraphy；nonmarine sediment；system tract； reservoir， petroleum exploration；Qaidam1 Characterization of System Tract
• 起始页：456
• 总页数：5
• 刊名：新疆石油地质
• 是否内版：否
• 刊频：双月刊
• 创刊时间：1980
• 主办单位：新疆石油学会；新疆油田公司；塔里木油田公司；吐哈油田公司；新星石油公司西北石油局
• 主编：夏明生
• 地址：新疆克拉玛依市准噶尔路32号
• 邮编：834000
• 电子信箱：xjpg@petrochina.com.cn
• 网址：http：//www.yjy.xj.cnpc.com.cn
• 卷：25
• 期：04
• 期刊索取号：P452.06724
• 核心期刊：中国核心期刊

摘要

System tract, a basic unit of II-grade sequence, is a combination of the same-term depositional systems controlled bywater level changes (lacustrine level or sea level). Petroleum tends to being accumulated in the depositional sand bodies of differ-ent system tracts. The type and distribution of lithologic pools could be predicted by characterization of system tracts and analysisof depodtional systems. In southwestern Qaidam basin, the characterization of system tracts shows that there exist developedtransgressive system tract (TST) and various types of reservoirs such as sand body of deltaic front, lacustrine beach and dam aswell as local turbidite of semideep lake. Based on synthetically geologic and seismic analyses, using digital seismic processingtechniques （Jasons reservoir inversion, etc.）, the sand body distribution could be described, hence predicting that in southwest-ern Qaidam basin mainly developed the lithologic pools of SB, TU, DT and SS types.