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中原油田为严重非均质油藏 ,多层注采开发导致层间渗透率差异不断扩大。物性好的油层采油速度快 ,由于单层突进而过早水淹 ;而物性差的油层不能得到有效动用 ,且可能存在污染伤害。油井堵水 酸化综合工艺是一项封堵出水层与酸化解堵潜力层相结合的新工艺。本文介绍了该技术的工艺原理及耐酸高强度堵剂的性能评价结果。现场应用表明 ,堵水 酸化综合工艺具有效果互补的技术优势 ,增油降水效果好 ,作用有效期长。
Zhongyuan Oilfield is a serious heterogeneous reservoir. The development of multi-layer injection-production has led to the widening of the difference in permeability between layers. Oil reservoir with good physical property has the advantages of fast oil production, premature flooding due to single-layer protrusion, poorly-developed oil reservoir can not be effectively used, and pollution damage may exist. Oil well water acidification comprehensive process is a block out of the water layer and the acidification of the potential of blocking the new combination of technology. This article describes the technical principles of the technology and acid-proof high-strength plugging agent performance evaluation results. The field application shows that the comprehensive technology of water and acidification has the technical advantages of complementary effects, good oil and precipitation reduction effect and long effective period.