摘要
吐-哈盆地的油气藏在划分为构造、地层岩性与复合型三大基本类型的前提下,可根据油气移入与圈闭形成之间的关系将每类油气藏进一步划分为共成熟丰满型、准共成熟不丰满型、共成熟后期破坏型与非共成熟贫型油气藏。油气聚集受古隆起、古斜坡、断裂带与地层剥蚀尖灭带控制,具复式油气聚集的特点。
Abstract
Turpan-Hami Basin consists of Hami (in the east part) and Turpan (in the west part) Depressions which occupy an area of about 4.86?10km withdeposits over 8700m in the greatest thickness. In Turpan Depression, Jurassic is primary, Permia n and Triassic secondary; but the Hami Depression is contrary to the Turpan Depression. The Qiktim and Sinjinkou Oilfields were discovered in early years, and a number of medium or large size oilfields such as Qiuling, Shanshan, Wenjisang and Yilahu Oilfields were also discovered in recent years in the region. This paper summarized the basic pool types and divided them into co-matured plentiful type (Shanshan, Qiuling and Wenjisang), semi-comatured unplentiful type (Yilahu), destroied-comature type (Sinjin-kou, Qiktim) and uncomatured poor type, under the basic division of pools of structural,stratigraphic-lithologic and complex types. Hydrocarbon accumulation was controlled by fossil uplifts, slopes, fault belts, denudation and pinch-out belts.
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