台北凹陷浅水三角洲沉积特征及勘探启示  

Sedimentary Features of Shallow-water Delta in Taipei Sag and Their Significant for Exploration

作　　者：肖冬生[1,2] 陈旋[2] 陈永慧[2] 何燕清[2] 张华[2] 

机构地区：[1]中油吐哈油田博士后科研工作站,新疆哈密839009 [2]中油吐哈油田分公司,新疆哈密839009

出　　处：《特种油气藏》2015年第2期48-51,153,共4页Special Oil & Gas Reservoirs

基　　金："十二五"国家科技重大专项"岩性地层油气藏成藏规律;关键技术及目标评价"(2011ZX05001-002-004);中国石油天然气股份有限公司"新疆大庆"重大科技专项"中小型叠合盆地石油地质条件整体评价及勘探技术研究"(2012E-34-04)

摘　　要：为加快台北凹陷岩性油气藏勘探,开展了主要含油层系三间房组沉积特征分析。综合研究古地形、古气候、沉积物供给、古水深及湖平面变化。结果表明,三间房组沉积期,凹陷西、南缘发育多个浅水辫状河三角洲。从鄯善弧形带勘探实践总结出浅水三角洲勘探启示:前陆盆地前缘斜坡区浅水三角洲树枝状"窄河道、薄砂体"决定了构造-岩性油藏为主要油藏类型,"满盆砂"为前渊区岩性油气藏提供储层条件,精细储层描述是勘探的核心工作。In order to accelerate the exploration of lithologic oil/gas reservoirs in Taipei Sag,the analysis on sedimentary features of Sanjianfang Formation in major oil-bearing layer series has been conducted. The comprehensive study on ancient landform,ancient weather,supply of sediments,water depth in ancient times and the change of water level of lakes has been made. The results indicate that,during the sedimentation of Sanjianfang Formation,multiple shallow-water braided river delta developed at the western and southern margins of the sag. The conclusion for the shallow-water delta exploration after the practice of arc-belt exploration in Shanshan is: 'narrow river channel and thin sand body'of dendrite of shallow-water delta in slope area,foreland basin front determines that structural-lithologic reservoir is the major type. 'Basin full of sand'provides the reservoir conditions for the gas/oil lithologic reservoir in front area. Fine interpretation of reservoir is the key work of exploration.

关 键 词：沉积特征 勘探启示 浅水三角洲 前陆盆地 台北凹陷 三间房组 鄯善弧形带 

分 类 号：TE122.31[石油与天然气工程—油气勘探]