准噶尔盆地大油气田的勘探方向

准噶尔盆地油气资源丰富，勘探程度低，勘探潜力巨大。南深北浅的楔形地质结构与区域单斜形态决定了盆地腹部中浅层侏罗-白墨系主要发育低幅度背斜、断裂-岩性体、地层-岩性等非构造油气藏，这是油气勘探的现实领域；南缘强烈的冲断活动与压扭作用形成的复杂叠加构造带是油气勘探的战略突破领域；被晚期深埋的腹部石炭系—三叠系大构造则是重要的战略接替领域。准噶尔盆地的油气勘探具有多个油气储量增长高峰的特点，近10年来非构造油气藏、中深层油气藏的储量发现大幅度攀升，非构造油气藏已成为勘探的主要对象。

Pays for Giant Oil Field Prospecting in Junggar Basin

Junggar basin is one with abundant hydrocarbon resources,low degree of exploration and great potentials for oil prospecting.For further petroleum exploration,its wedge-like structure with shallow or thin strata in the north and deep or thick strata in the south and regional monoclinal structure would be the realistic domains by their determinants for the fact that the subtle trapping oil-gas reservoirs such as low-amplitude anticline,faulting-lithologic and stratigraphic-lithologic types are primarily developed in middle-and shallow-buried Jurassic-Cretaceous in the hinterland of Junggar basin;its complex superimposed struc-tural belts shaped by intense thrusting and compresso-shear actions would be the strategic breakthrough domains;while the deep-buried large-scale structures of Carboniferous to Triassic in hinterland of the basin should be the important successive domains.In addition,Junggar basin has a characteristic of multiple incremental peaks in oil-gas reserves or OOIP/OGIP.In recent10years,much more reserves have been found out from the subtle reservoirs and the middle-deep reservoirs.Hence subtle reservoirs have become major targets for further hydrocarbon exploration in Junggar basin.