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| 聚合物驱后凝胶与二元复合体系段塞式交替注入驱油效果 | |
| 作者姓名： | 王中国 张继红 张志明 李旭东 赵倩倩 |
| 作者单位： | 1. 哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001;大庆油田有限责任公司第五采油厂,黑龙江大庆163001 2. 东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆,163318 3. 大庆油田有限责任公司第五采油厂,黑龙江大庆,163001 |
| 基金项目： | 中国石油科技创新基金研究项目(2010D-5006-0207) |
| 摘 要： | 针对大庆油田N5区西部P1试验区块聚合物驱后含水率上升速度加快,产油量降低,且尚存大量剩余油的现状,提出进一步提高聚合物驱后剩余油的凝胶与二元复合体系段塞式交替注入驱油技术,通过实验分析铬离子凝胶体系黏度的影响因素,研究聚合物驱后凝胶体系与二元复合体系(相对分子质量为2 500万的聚合物和RMA-1型表面活性剂)段塞式交替注入驱油的效果;通过数值模拟分析聚合物驱后凝胶与二元复合体系段塞式交替注入驱油的可行性.结果表明:凝胶与二元体系段塞式交替注入驱油阶段采收率在聚合物驱基础上提高10%以上,说明该技术可以作为聚合物驱后进一步提高原油采收率的技术储备. |
| 关 键 词： | 聚合物驱 凝胶 二元复合体系 交替注入 驱油效果 |
Oil displacement by alternately injecting slug of gel and polymer/surfactant compound system after polymer flooding |
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| Authors: | WANG Zhong-guo ZHANG Ji-hong ZHANG Zhi-ming LI Xu-dong ZHAO Qian-qian |
| Institution: | 1.College of Mechanical and Electrical Engineering,Harbin Institute of Technology,Harbin,Heilongjiang 150001,China;2.Oil Recovery Plant No.5,Daqing Oilfield Corp.Ltd.,Daqing,Heilongjiang 163001,China;3.Key Laboratory for Enhancing Oil/Gas Recovery of Ministry of Education,Northeast Petroleum University,Daqing,Heilongjiang 163318,China) |
| Abstract: | Aiming at the present situation of the N5 area in the western P1 test block after the polymer flooding,the water content rise faster,lower oil,and still have a lot of remaining oil.The author develop a displacing technology,alternately injecting the slug of the gel and polymer/surfactant compound system,which can advanced improving the remained oil after polymer flooding.The author used the indoor experiment to analyze the influential factor of the viscosity of gel system,and to study the oil displacement effect with alternately injecting the slug of the gel system and polymer/surfactant compound system(polymer which the relative molecular weight is 25 million and the RMA-1 surfactant).And through numerical simulation,the author analyzed the feasibility of alternately injecting the slug of the gel system and polymer/surfactant compound system after polymer flooding.The results of experiment showed the oil recovery improve more than 10% on the basis of the polymer flooding.This represent that the oil displacing method can be become the technical storage to further improve the recovery after polymer flooding. |
| Keywords: | polymer flooding gel polymer/surfactant compound system alternatively injecting displacement efficiency |
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