沉积物源的综合识别与岩性圈闭的确定——以柴达木盆地七个泉地区为例

 柴达木盆地西部南区的阿尔金山前带是寻找岩性地层油气藏的有利地区。但该区沉积物源多、砂层薄，仅用常规的、单一的方法难以取得岩性地层油气藏勘探的效果。本文通过建立层序地层格架确定寻找岩性油气藏的主要目的层段，应用重矿物组分、测井响应、波阻抗反演等多种方法进行沉积物源和岩性圈闭的综合识别，在柴达木盆地西部南区七个泉构造斜坡带上确定一个地层岩性圈闭，已获得钻探的证实。

Comprehensive identification of sedimentary derivation and determination of lihologic trap: an example of Qigequan area in Qaidam basin

Alkin piedmont zone in the west of Qaidam basin is prospective area looking for lihologic stratigraphic reservoir, but only using single and ordinary approach is difficult to achieve good effects of lithologic stratigraphic reservoir exploration. The paper determined the major target series of strata of looking for lithologic reservoir by building up sequence-stratigraphic framework, applied multiple approaches such as heavy mineral compositions, logging response and wave impedance inversion to carry out comprehensive identification of sedimentary derivation and lithologic trap, resulted in determination of a lithologic stratigraphic trap in Qigequan structural slope, the southern zone of the west of Qaidam baisn which has been proved by drilling result.