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塔中地区古生界石油地质特征及勘探方向

断块油气田

2004年 11卷第02期

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Title

Petroleum Geologic Characteristics and the Exploration Strategy in Tazhong Low Uplif t of Tarim Basin

作者

孙金山李匡时2 黎祖汉张　慧

单位

1. 中原油田分公司工程监督中心　2.中原石油勘探局地质录井处

摘要

塔中低凸起古生界地层良好的烃源岩条件、盖层条件,优质的储集性能和成藏条件表明该地区有巨大的油气资源潜力。塔中Ⅰ、Ⅱ号断裂形成早,直接与寒武、奥陶系烃源岩相连,既是重要的油气运移通道又是改善储集层性能的主要因素。塔中低凸起的油气勘探应同时注重石炭系、志留系和中、下奥陶统;砂岩和碳酸盐岩油气藏并重。二叠系火山活动对塔中地区油气聚集不构成影响。沿塔中Ⅰ、Ⅱ号断裂构造带及塔中10 井构造带西北部是塔中地区最有利的勘探区域之一。寒武—奥陶系地层- 岩性圈闭原生油藏、与火成岩上拱和遮挡有关的圈闭也是塔中地区勘探的重要目标。

Abstract

Paleozoic formation of Tazhong low uplift has good

source rocks and cap condition , favourable reservoirs and

condition for hydrocarbon accumulation and pooling. It shows

that Tazhong low uplift has huge resources potential for oil

and gas exploration. Tazhong No. 1 and No. 2 fault were

generated at early stage and connected with the Cambrian

and Ordovian source rocks. They are important pathways for

hydrocarbon migration and one of main factors improving the

quality of reservoir rocks. The hydrocarbon exploration in

Tazhong low uplift attaches importance to low Paleozoic

multi2targets such as S , O2 and O3 and pays attention to

sandstone pool and carbonite pool of carboniferous at the

same time. Block2buried hills along Tazhong No. 1 fault

should be important exploration targets. Northwest in

Tazhong 10 well zone of structures is the favourable

exploring area. The primary oil pools accumulating in the

stratigraphic or lithologic traps and those migrated to and

accumulation in the traps controlled by volcanic rock upper

bend and shelter are further exploration fields in the central

Tarim basin.

关键词：

塔中低凸起; 古生界; Ⅰ号断裂构造带; 石油地质特征; 寒武—奥陶系; 勘探方向;

Keywords:

Tazhong low uplift , Paleozoic , Structural zone of No. 1 fault , Petroleum geologic characteristics ,Cambrian2ordovician , Exploration strategy

;

基金项目

DOI