塔里木盆地北部石炭系盐体塑性形变与油气圈闭

周江羽; 林忠民; 周凌方; 罗传容; 王燮培; 肖朝晖

doi:10.11743/ogg19990308

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塔里木盆地北部石炭系盐体塑性形变与油气圈闭
PLASTIC DEFORMATION AND OIL GAS TRAPS OF CARBONIFEROUS SALT BODY IN NORTHERN TARIM BASIN
1999年20卷第3期页码：216-219
网络首发：1999-09-25，

纸质出版：1999
DOI： 10.11743/ogg19990308
稿件说明：

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周江羽, 林忠民, 周凌方, 等. 塔里木盆地北部石炭系盐体塑性形变与油气圈闭[J]. 石油与天然气地质, 1999,20(3):216-219. DOI： 10.11743/ogg19990308.

Zhou Jiangyu, Lin Zhongmin, Zhou Linfang, et al. PLASTIC DEFORMATION AND OIL GAS TRAPS OF CARBONIFEROUS SALT BODY IN NORTHERN TARIM BASIN[J]. 1999, 20(3): 216-219. DOI： 10.11743/ogg19990308.

摘要

构造沉积背景分析表明

塔里木盆地北部石炭系含盐层系主要形成于干旱炎热气候条件

受海平面变化控制的滨岸潮间蒸发泻湖环境

厚度为80～221 m.受区域性构造运动的影响

盐体在地史时期曾经历了三次较为明显的塑性流动:第一次发生在早二叠世末期

表现为盐体向南流动了2～2.8 km;第二次发生在晚三叠世-早侏罗世早期

盐体向南流动距离为1～2.8 km;第三次发生在晚第三纪末期

盐体向北回流

距离为0.5～1.2 km.因盐体塑性流动形成的构造圈闭类型主要有盐脊背斜、盐丘背斜、盐边向斜等。勘探实践证明

盐脊背斜是主要的含油气构造

盐丘背斜、盐边向斜也应给予足够重视。

Abstract

On the analysis of tectonic depositional setting

the Carboniferous salt bearing set in North Tarim Basin mainly formed in the hot and dry evaporating lagoon environment of beach intertidal zone controlled by sea level changes with the thickness of 80～221 m.Under the influence of regional tectogenesis

the salt body underwent three times of plastic fluxion in geological history.The first time was in the late stage of Early Permian

the salt flowed 2～2.8 km southwards;the second time was in Late Triassic Early Jurassic

the salt flowed 1～2.8 km southwards again;the third time was in the end of Tertiary

the salt turned to flow northwards for 0.5～1.2 km.The salt flow resulted in several kinds of structural traps mainly including salt ridge anticline

salt dome and salt edge syncline.It has been proved by facts that the salt ridges are major oil and gas bearing structures while the rest two kinds should also be taken into considerable account.