高升油田注水区块稠化油缓速乳化堵水技术

发布时间：2018-06-28 18:50

本文选题：选择性堵水 + 缓速　；参考：《东北石油大学》2015年硕士论文

【摘要】：高升油田注水区块采用活性稠油堵水技术取得了一定成果。但以高凝稠油为主的乳化体系在施工过程中存在乳化速度快、注入压力高等问题,导致施工成功率低。为降低施工压力,提高堵水效果,有必要开展“稠化油缓速乳化堵水技术”研究。本文针对高升油田注水区块地质特征,利用合作脱水普通稠油和高一联外输混合稠油,通过各种化学药剂与两种原油乳化实验,研制出了缓速乳化剂。研究表明,不同乳化剂种类乳化形成的乳状液粘度与稳定性都不同。最终乳化剂采用木质素磺酸钠、DYRH-WO-1和十二烷基磺酸钠进行复配,原油采用合作脱水普通稠油。研究了乳化稠油稳定性的影响因素,通过对乳化剂浓度、含水率、矿化度、温度等几个方面出发,由浅入深的展开研究,通过测定形成乳状液的形态、粘温性能、稳定性及其微观形态、界面张力研究,确定了药剂最佳浓度为和含水,限定了药剂使用矿化度范围和最高温度。评价了研制出的堵水剂的配方的性能,并进行岩心驱替模拟实验,研究其提高采收率的效果,同时通过不同注入PV数的岩心模拟实验,对注入段塞进行优化,并确定现场实施工艺方案。
[Abstract]:Some achievements have been achieved by using active heavy oil plugging technology in water injection block of Gaosheng Oilfield. However, the emulsification system with high coagulation and heavy oil has some problems such as high emulsification speed and high injection pressure during the construction process, which leads to low construction success rate. In order to reduce the construction pressure and improve the water shutoff effect, it is necessary to study the technology of slow emulsification and water shutoff of thickened oil. In view of the geological characteristics of water injection block in Gaosheng Oilfield, a slow speed emulsifier was developed by using a mixture of common heavy oil and mixed heavy oil transported from one high to the other, through experiments of various chemical agents and two kinds of crude oil emulsification. The results show that the viscosity and stability of emulsion formed by emulsification of different emulsifiers are different. The final emulsifier was mixed with sodium lignosulfonate (DYRH-WO-1) and sodium dodecyl sulfonate (DYRH-WO-1), and crude oil was mixed with common heavy oil. The factors affecting the stability of emulsified heavy oil were studied. Through the study of emulsifier concentration, water content, salinity, temperature and so on, the morphology of emulsion and the viscosity and temperature properties were measured. The study of stability, micromorphology and interfacial tension shows that the optimum concentration and water content of the reagent are determined, and the range of mineralization and the maximum temperature are defined. The performance of the formulation of the developed water plugging agent is evaluated, and the core displacement simulation experiment is carried out to study the effect of improving the recovery factor. At the same time, the injection slug is optimized by the core simulation experiment with different PV number injection. And determine the site implementation of the process plan.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE358.3

【相似文献】