孤岛油田馆1 + 2 低能低渗储层的开发实践与认识

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

梁胜利,王东梅,张　燕,赵慧萍

Liang Shengli, Wang Dongmei, Zhang Yan, et al

胜利油田有限公司孤岛采油厂

Gudao Oil Production Division , Shengli Oilfield Co. Ltd. , SINOPEC, Shandong 257001 , P. R. China

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油层的采收率由注水开发前的4.2 %增加到目前的16.3 % ,实现了分布零散、薄层、出砂严重低品位油藏的高效开发。

The member Ng1 + 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 Ng1 + 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.