论文部分内容阅读
在充分研究靖安油田大路沟二区和白于山区油井含水上升快(或裂缝水淹)原因的基础上,通过室内实验对“预交联颗粒+PL调剖剂+缔合聚合物+水驱流向改变剂”复合深部调剖体系的主要成分“水驱流向改变剂”和“缔合聚合物”在不同环境下的膨胀特性、稳定性以及剖面改善能力等性能进行了研究,并把复合深部调剖体系用于现场试验,结果表明该体系既可以有效封堵高渗通道,又可以使深部液流转向,同时具有见效快、有效期长、施工工艺简单、环境污染小等优点。该复合深部调剖体系解决了大路沟二区、白于山区油藏油井含水上升快(或水淹)、采收率低的问题,为今后治理大孔道或裂缝见水油藏提供了技术支撑。
Based on the full study of the causes of quick increase of water cut (or crack flooding) in Daliugou second and Baiyashan oilfields in Jing’an Oilfield, the effects of “pre-crosslinked particles + PL profile control agent + associative polymer + Water drive flow direction change agent ”The main component of the composite deep profile control system “ water-flooding flow direction change agent ”and “ associative polymer ”in different environments expansion properties, stability and profile improvement ability and other performance The results show that this system can not only effectively block the high permeable channel but also divert the deep liquid flow, with the advantages of quick response, long effective period, simple construction process and environmental pollution Small advantages. The composite deep profile control system solves the problem of rapid rise (or flooding) of oil wells in the Daluogou Second and Baiyoushan reservoir wells and low oil recovery, and provides technical support for the future treatment of large channels or fractures in water reservoirs .