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升30-26井区位于升平油田中部,被3条断层切割在一个独立的封闭区域,井区油层厚度大,层内、层间和平面非均质性较为严重,主力砂体水淹严重,油井含水高、总体采出程度较低、措施挖潜余地小。为了改善井区开发效果,提高油田最终采收率,论证聚合物驱在我厂的可行性和适应性,优选该井区为三次采油先导试验区块。4口注水井于2007年4月28日开始聚表剂驱试验阶段,日注入量275m3,注入液浓度为1000mg/L。
Sheng 30-26 well is located in the central part of Shengping Oilfield. It is cut by 3 faults in an independent closed area. The wellbore has thick oil layers and serious inhomogeneities in layers, floors and planes. The main sand bodies are flooded severely, Oil wells high water content, the overall level of mining is lower, the potential of small potential tapping. In order to improve the development effect in the well area, increase the ultimate recovery rate of the oilfield, and demonstrate the feasibility and adaptability of the polymer flooding in our plant, it is preferable that the well area be the third oil recovery pilot test block. Four injection wells began to gather table agent flooding test stage on April 28, 2007. The daily injection volume was 275 m3 and the injection concentration was 1000 mg / L.