塔里木盆地北部地区地震地层学工作的几点认识

A GENERAL REVIEW OF SEISMIC STRATIGRAPHICAL EFFECT IN NORTHERN TARIM BASIN

1. 地矿部石油地质研究所;2. 地矿部第一物探大队

本文用地震地层学方法研究了塔里木盆地北部地区的地震资料,划分了塔北地区的地震层序。在划分地震层序的同时,对塔里木盆地的构造运动及现今的构造格局进行了概要分析。通过地震相和速度资料的分析,以及钻井和测井资料的综合应用,对V层序进行了沉积环境的讨论和沉积相带的划分;对塔北E区Ⅵ层序作了沉积环境的分析,并对其中一些特殊异常反射结构进行了针对性的研究,提出了可能的沉积环境模式。

Based on seismic strarigraphical technique, a judgement is made on the seismic section of northern Tarim Basin and the seismic sequence is established. While setting up the sequence, a brief description is made on the tectonic movement of Tarim Basin and present structural framework, By examining the seismic facies and velocity data and integrated with drilling and logging data, the sedimentary environment of sequence Ⅴ(Jura-ssic-Triassic) is discussed and sedimentary facies zone divided; the sedimentary environment analysis to sequence Ⅵ (Carboneferous-Permian) of northeastern part of Tarim Basin is made. Moreover, research aimmed at reflection configuration of some special anomalies is conducted. And possible sedimentary environmental patterns are suggested.