超低渗透储层开发技术对策

Strategies of development technology for ultra-low permeability reservoir

超低渗透储层在鄂尔多斯盆地拥有巨大的资源潜力,该类储层物性差,启动压力梯度高。针对储层特征,提出"超前注水、缩小井距、提高注采井数比、提高人工裂缝长度与导流能力"的开发思路,在西峰油田庄9井区先导性开发试验中取得了明显的增产效果,为实现该类油藏的有效开发奠定了基础,极大地拓宽了鄂尔多斯盆地油气勘探与开发的前景。

Ultra-low permeability reservoir in Ordos Basin has large oil resource, but it has poor physical properties and high starting pressure gradient, so it is hard to be exploited. According to these characteristics, the development strategies of ＂advanced water injection, well space shortening, rising injection-to-production-well ratio, increasing artificial fracture length and fluid diversion capacity＂ are proposed, and good result has been achieved in the pilot tracey in Zhuang 9 wellblock, Xifeng Oilfield. The development design settles a strong base for the efficient development of ultra-low permeability reservoir and broadens the prospects of oil and gas exploration and development in Ordos Basin.