水平井与化学驱结合提高聚驱后采收率实验  

ENHANCED OIL-RECOVERY EXPERIMENT AFTER POLYMER FLOOD BY COMBINING HORIZONTAL WELL WITH CHEMICAL FLOODINGS

作　　者：刘平[1] 李宜强[2] 李瑞升[1] 

机构地区：[1]大庆油田有限责任公司第一采油厂,黑龙江大庆163111 [2]东北石油大学油藏实验室,黑龙江大庆163318

出　　处：《大庆石油地质与开发》2011年第4期135-140,共6页Petroleum Geology & Oilfield Development in Daqing

摘　　要：为了老油田可采储量进一步挖潜，提高特高含水油田厚油层采收率，开展了水平井聚合物驱后剩余油室内实验，研制了含黏土矿物的三维正韵律物理模型，优选了适合于水平井的化学驱油剂（高浓度聚合物、聚表剂、二元复合体系、三元复合体系），设计了合理的井网模式。实验结果表明，水平井最佳化学驱油剂为二元复合体系，最佳井网模式为水平井一注一采井网。在聚合物驱基础上采收率可再提高17．69个百分点，得到了聚驱后进一步提高采收率的新方法。In order to further tap the potentials of mature oilfield reserves and enhance the recovery of the thick oil reservoirs for ultra-high watercut oilfield, the lab. experiments of the remained oil after polymer flooding in a horizontal well are performed; the 3 D positive-rhythm physical model, which contains clay minerals, is developed; the chemical oil-flooding agents （ including high-concentration polymer, functional polymer, binary and ASP composite systems ） are optimized for horizontal wells, and furthermore the reasonable well patterns are designed. The experimental results show that optimal displacing method for the horizontal well is binary （polymer-suffactant ）composite system ; the optimal well pattern for the horizontal well is composed of one injector and one producer. On the basis of polymer flooding, the oil recovery has been enhanced 17.69%. In a word, a new approach to further improve oil recovery after polymer flooding is achieved.

关 键 词：水平井 化学驱 三维 平板模型 提高采收率 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]