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孤岛馆 1+2砂层组零散分布于整个孤岛油田 ,是该油田岩性 构造复合油藏的产层。在依靠天然能量的常规试采方式下 ,影响该砂层组开采效果的主要因素有 :油层多而薄、储量分散、油砂体小 ;天然能量弱 ,单井产能较低 ;成岩作用差 ,泥质含量高 ,水敏性强 ,导致油层在开采过程中出砂严重 ,加上出砂粒度较细 ,防治难度大。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。参 2 (毕秋军摘 )
Gudao Pavilion 1 + 2 sand group scattered throughout the Gudao oil field, is the oil field lithostratigraphy compound reservoir production layer. The main factors influencing the mining effect of this sand group are as follows: the reservoir is multi-thin, the reservoir is dispersed, the oil sands are small; the natural energy is weak, the productivity of single well is low; the diagenesis is poor, High clay content and strong water sensitivity lead to severe sand production in the process of oil recovery. In addition, due to the fine grain size of sands, it is very difficult to control. In order to obtain a higher recovery rate of the sand group, a pilot zone of 30 8 pilot water development has been opened up, and the matching technology of high-efficiency development of reservoir 1 + 2 reservoir injection has been optimized. After being popularized and applied, the recovery rate of Embassy 1 + 2 reservoir increased from 4.2% before waterflooding to the current 16.3%, realizing the efficient development of scattered low-grade reservoirs with thin layers and serious sand production. Participation 2 (Bi Qiujun pick)