452
TYAND
NTALPRO?
安全与环保
石油与天然气化工
CHEMICAL ENGINEERING OF OIL & GAS
2014
锦州9-3油田产出聚合物对污水稳定性的影响研究
刘光成潘亿勇12龚小平2张岑高建崇
摘要针对渤海锦州9-3油田聚合物驱生产污水组成特点，分别测定了不同相对分子质量、质量浓度及水解度的产出聚合物对含聚污水表观黏度、油滴粒径、Zeta电位、油水动态界面张力、
油水平衡界面张力、油水界面扩张黏弹性等指标的影响。研究结果表明，含聚污水中产出聚合物的存在会增加含聚污水的黏度，吸附于油水界面增强含聚污水中O/W型乳液滴的Zeta电位,增加水化层以及油水界面膜强度，从而增强污水的乳化程度和稳定性，降低污水中油滴的聚并效率,增大了含聚污水的达标处理难度。
关键词产出聚合物含聚污水稳定性Zeta电位油水界面黏弹性
中图分类号：X741
文献标志码：A
DOI:10.3969/.issn.1007-3426.2014.04.023
InfluenceofproducedpolymeronwastewaterstabilityinJz9-3Oilfield
LiuGuangcheng',Pan Yiyong'.2,Gong Xiaoping’,Zhang Ling',GaoJianchong
(1.CNO0C（China)Co.,Ltd.Tianjin Branch,Tianjin300452, China; 2.College of Resources
and Environmenta,SouthwestPetroleum University,Chengdu6l0500,Sichuan,China)
Abstract : According to the composition of wastewater produced from polymer flooding in Bo hai JZ9-3 Oilfield, influences of produced polymers with different molecular weight , concentra-tion and hydrolytic degree on the apparent viscosity , particle sizes of oil droplets , Zeta potential , dynamic interfacial tension , equalize interfacial tension and interfacial dilatational properties were measured. The results indicated that the produced polymer with low molecular weight could im prove the apparent viscosity of wastewater , and the Zeta potential of o /W emulsion and the oil. water interfacial film strength were increased after adsorption of polymer in oil-water contact . Consequently the wastewater emulsion stability was increased , and the coalescence efficiency of oil droplets in wastew ater was decreased greatly , so that the difficulty of polymer-contained sew. age reaching standard became harder.
Key words : produced polymer, polymer-contained sewage , stability , Zeta potential, oil-water interfacial elasticity
聚合物驱油作为一项重要的三次采油技术，在海上已形成规模化应用，取得了显著成效1-3]，同时也产生了一些次生间题，最突出的就是含聚污水的
水质问题4-5]。目前，锦州9-3油田注入聚合物为长链型部分水解聚丙烯酰胺，相对分子质量约1500X 10*.注入质量浓度为1200mg/L。该聚合物具有
基金项目：国家科技重大专项"大型油气田及煤层气开发”(2011ZX05057）；中国海洋石油总公司技术研究项目“海上含聚污水处理工艺技术应用研究及实验"(CNOOC-KJ125ZDXM0000000NFCJF2011-01）。
作者简介：刘光成（1964一），男，汉族，现工作于中海石油(中国)有限公司天津分公司，主要从事海上油气田开发生产方面的工作。地址：（300452)天津市塘沽区渤海石油路688号。