Abstract:

The Triassic-Jurassic source rocks are widely developed in Kuqa Foreland Basin and have sufficient oil and gas supplies. The thick gyp-salt rock of the Tertiary widely developed provided the favorable sealing conditions. The high-quality sandstone reservoir of the Tertiary-Cretaceous Bashijiqike Formation is well developed,and the large-scale structural traps forming several structural belts are distributed extensively. The conditions for forming oil and gas reservoirs are excellent. So the basin possesses of the petroleum geological conditions to form medium or large-scale oil and gas fields. In order to make a good foundation for re-evaluating the resource potential,the studies on the key influencing factors for resource assessment,such as confirmation of hydrocarbon production rate,the division of source rock by strata and lithology,resumption of the primary basin and the study of Kelasu calibrated unit,were strengthened in the 3rd petroleum resource assessment implemented by the PetroChina Company Limited. The calculation of the resource with several methods,such as basin model method,play assessment method,strata assessment method and statistics as well as adopting the Delphi integrative evaluation method shows that Kuqa Foreland Basin is abundant for oil and gas resources and enjoys the priority in gas resource.

Key words: Kuqa Foreland Basin, oil and gas resource assessment, calibrated unit, resources, oil and gas distribution, oil and gas exploration

摘要：

库车前陆盆地三叠系-侏罗系烃源岩广泛分布,是充足的油气来源;巨厚的第三系膏盐岩广泛发育,形成了良好的保存条件;第三系-白垩系巴什基奇克组砂岩优质储层发育,大型圈闭成排成带分布;油气成藏条件优越,具备形成大中型油气田的地质条件.新一轮的资源评价加强了对影响资源评价的烃产率、烃源岩分层系分岩性的重新厘定、原型盆地地质史的恢复以及克拉苏刻度区等研究工作,为库车前陆盆地资源潜力的再认识奠定了良好的基础.利用盆地模拟法、区带评价、层系评价以及统计法等多种方法计算的资源量及采用特尔菲法综合评价求取库车前陆盆地的资源量,表明库车前陆盆地是一个以气为主的油气资源非常丰富的盆地,为勘探决策和部署提供了有效依据.

关键词: 库车前陆盆地, 油气资源评价, 刻度区, 资源量, 油气分布, 油气勘探