柴窝堡凹陷柴窝堡构造达1井钻探效果及其勘探意义

柴窝堡构造是柴窝堡凹陷实现勘探突破的首选目标,近年在该构造主体部位钻探的达1井取得了较好的效果,具有重要的勘探意义。首先,进一步证实柴窝堡构造含油气性良好,有望发现较大规模的油气藏;第二,表明柴窝堡构造油气藏类型为构造背景下的由多个含油气单砂体叠置形成的岩性凝析油气藏,物性是控制油气富集的主要因素;第三,展示了柴窝堡凹陷油气勘探潜力较大,西疙瘩构造带为有利勘探区带,阿克苏构造为有利勘探目标;最后启示我们,形成一套有效的油气层压裂改造技术,是实现柴窝堡凹陷油气勘探突破的必由之路。

THE WELL DRILLING RESULTS AND EXPLORATION SIGNIFICANCE OF WELL DA # 1 ON CAIWOBAO STRUCTURE IN CAIWOBAO DEPRESSION OF SOUTHERN MARGIN OF JUNGAR BASIN

Caiwobao structure is the first chosen exploration target to make breakthrough in hydrocarbon exploration. In recent years, good exploration results have been achieved through drilling Well Da#1 on the main body of Caiwobao structure, which is very important to hydrocarbon exploration in this area. Firstly, it has been proved through drilling Well Da#1 that the hydrocarbon potential is great, and have a great potential to find some large scale oil and gas reservoirs. Secondly, it has been indicated that the traps are mainly structure-lithologic types, with many sand bodies superimposed, containing condensate oil and gas, and the physical properties of reservoir are the main factors which controlled the accumulation of hydrocarbon. Thirdly, it shows that the hydrocarbon potential is great in Caiwobao depression, and the Xigeda tectonic belt is favorable zone for hydrocarbon exploration, Akeshu structure is favorable drilling target. Finally, it inspires us to find a set of effective fracturing technologies to stimulate reservoirs, which is the only way to make a great breakthrough in hydrocarbon exploration in Caiwobao depression.