摘要
吐哈盆地北部山前带柯柯亚地区的巴喀下侏罗统气藏具有储层致密、基质孔隙储气、气层厚度大、连片广、"甜点"与构造裂缝和沉积微相密切相关等致密砂岩气典型特征。吐哈聚煤盆地烃源岩条件优越,发育与煤系源岩间互的大型沉积砂体,台北凹陷主体持续沉降,烃源岩持续演化排烃,有利于源内大型致密砂岩气藏的形成。进一步总结认识致密砂岩气高产富集规律,整体评价全盆地致密砂岩气资源潜力,攻关突破"甜点"预测描述技术,是下一步勘探需要解决的关键问题。
Baka Lower Jurassic gas reservoir, located in Kekeya area of mountain front in north of Tuha basin, is typical tight-gas-sandstone with characteristics of tight reservoir, matrix pore gas storage, big and extending gas bearing formation, and ＂sweets＂ being closely associated with structure fracture and sedimentation micro-facies. Hydrocarbon source conditions in Tuha coal-gathering basin are favorable, large scale sedimentation sandbody interlayed with coal measures mother rocks grow, main part of Taibei depression continuously subsides, hydrocarbon source rock continuously evolves and displaces hydrocarbon, it is favor of the formation of large scale tight-gas-sandstone reservoir in source rock. The following key problems needed to be solved are to further generalize and know high gas production enriching rules of tight-gas-sandstone, to overall appraise gas resource potential of tight-gas-sandstone of whole basin, tackle and breakthrough prediction and description technique of ＂sweets＂.
出处
《吐哈油气》
2010年第2期201-204,共4页
Tuha Oil & Gas
