塔里木盆地轮南地区三叠系沉积相分析

塔里木盆地东部地区的三叠系巳证实是一个主要的含油层系。本文根据钻井及测井资料对轮南地区三叠系沉积特征和环境进行了研究。指出该区三叠系为一套内陆河湖三角洲相沉积,主要物源在轮南东北方。作者结合构造特征预测在桑塔木、吉拉克一带可能存在着岩性圈闭、构造圈闭及地层—构造圈闭型三类油气藏;在草湖凹陷周围、柯托尔地区以及巴楚隆起东南侧的三叠系中可能会找到原生或次生油气藏。

ANALYSIS OF SEDIMENTARY FACIES OF TRIASSIC STRATA IN LUNNAN AREA OF TARIM BASIN

It has been confirmed that the Triassic strata in easter?rea of Tarim Basin is a major oil-bearing sequenee.This paper presents the studies of sedimentary characteristics and environment of Triassic strate in Lunnan area, basedon the drilling records and well log data. It is recognized that the Triassic strata belongs to an inland river/lake/deltafacies sediments of which primary source could exist in northeast of Lunnan area. The author foretells by integratingthese with the structure features that three types of reservoir, i. e. lithologic trap, structural trap and stratigraphic-st?ctural trap reservoirs, probably occured in the Sangtamu - Jilake region. Primary and secondary petroliferousreservoirs could possibly be found from the Triassic strata around Caohu (Grass Lake) depression, Ketuoer area andsoutheast side of Bachu uplift.