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河西务构造带历经30年勘探开发,目前已处于开发的中后期阶段,采出程度较高。多年的勘探开发证实,河西务构造带为一复式油气聚集带,沙四段是主力产油层,探明石油地质储量占总量的60%,已发现油藏受反向断层控制为主,发育反向断块、断鼻圈闭,现在评价潜力较大的反向断块已基本钻探。前期通过精细油气成藏条件分析,提出顺向断块油气成藏模式,优选2个顺向断块进行了精细评价,部署2口评价井,其中一口井目前已经完钻,取得较好的钻探效果和认识,对油藏评价具有重大的指导意义,构造背景优越的顺向断块油气成藏控制因素研究与实施有望是该区带寻找优质储量的重要接替战场。
Western Hexiu structure with 30 years of exploration and development, is now in the middle and late stages of development, mining a higher degree. Years of exploration and development confirmed that Hexiwu tectonic belt is a complex hydrocarbon accumulation zone, and that the Es4 Member is the main oil-producing layer. Proved petroleum geological reserves account for 60% of the total. It has been found that the reservoir is dominated by reverse fault control and developed Reverse fault block, broken nose trap, the evaluation of the larger potential of the reverse fault block has been basically drilling. In the early stage, according to the analysis of fine hydrocarbon accumulation conditions, forward hydrocarbon accumulation model of forward fault is proposed, and two forward fault blocks are evaluated in detail. Two evaluation wells are deployed. One of the wells has been drilled to obtain better drilling It is expected that the study and implementation of the control factors of the forward fault-block accumulation in the tectonic setting will be an important succession battlefield in the search for good reserves.