孤岛油田馆1+2低能低渗储层的开发实践与认识

孤岛馆1 2砂层组是孤岛油田岩性构造复合油藏的产层，为了获得该砂层组较高的采收率，开辟了中30-8先导性注水开发试验区，优选了馆1 2油藏注水高效开发配套技术。经推广应用，使馆1 2油层的采收率油注水开发前的4.2%增加到目前的16.3%，实现坠毁布零散、薄层、出砂严重低品位油藏的高效开发。

Practice and Knowledge on Low - Grade Reserve Development of the Member Ng1 + 2 of Gudao Oilfield

The member Ngl + 2 of Guantao Formation in Gudao Oilfield is the type of fluvial abandoned channel and flood plain deposit, where the oilbearing bed is abound and thin, the reserves is disperse, the oil reservoir is small and closed, the natural energy is weak, the productivity of single well is low, the diagenesis is unconspicuous, the shale content is high and the water- sensitive is obvious, all these results in serious sanding in exploitation and difficulties. In order to get higher oil recover factor from this zone, based on researches on oil reservoir and properties of petroleum and synthetical proof,a pilot test area of waterflooding development called Zhong 30-8 was established in 1991, thereby technology from waterflooding development of member Ngl + 2 was formed. After this technology was put into application, the recovery factor was increased from 4.2% to 16. 3% and efficient development of sporadic, thin and serious sanding reservoir is realized.