准噶尔盆地古隆起与油气勘探方向

Palaeohighs and Targets for Petroleum Exploration in Junggar Basin

准噶尔盆地古隆起经历了自晚古生代至新生代的多期次演化,发育了继承型、间断型、掀斜型和冲断带型等4种古隆起基本类型,通过构造沉积演化及油气成藏分析探讨了陆梁隆起、莫索湾凸起、车莫隆起的油气勘探领域和勘探方向。指出,陆架隆起区紧临凹陷的凸起区或断裂控制的继承性凸起带,莫索湾凸起上的石炭系-上二叠统夏子街组、下侏罗统西山窑组顶部和下二叠统佳木河组底部和车莫隆起的翼部是油气聚集的有利场所。

The palaeohigh in Junggar basin underwent multistage evolution from Neopaleozoic to Cenozoic, and four basic types such as successional, discontinuous, tilted and thrust ones were developed. This paper presents the tectonic and depositional evolutions and the hydrocarbon accumulations in this basin, and suggests the petroleum prospecting areas and targests in its Luliang uplift, Mosuowan swell and Che-Mo uplift. It is concluded that these places are all favorable for hydrocarbon accumulation such as swell area closely adjacent to the sag in Luliang uplift or inherited swell zone controlled by fault, Xiazijie formation of Upper Permian, top Xishanyao formation of Lower Jurassic and bottom Jiamuhe formation of Lower Permian as well as flank Che-Mo uplift.