高钙高矿化度油藏聚合物增黏体系及其增黏效果  

POLYMER VISCOSIFICATION SYSTEM AND ITS VISCOSIFICATION EFFECT IN HIGH CALCIUM AND HIGH SALINITY RESERVOIR

作　　者：曹瑜 孔繁鑫 郭春梅[1] 陈进富[1] Cao Yu;Kong Fanxin;Guo Chunmei;Chen Jinfu(China University of Petroleum(Beijing),Institute of Chemical Engineering and Environment,Beijing 102201,China)

机构地区：[1]中国石油大学(北京)化学工程与环境学院,北京102201

出　　处：《精细石油化工》2025年第2期1-5,共5页Speciality Petrochemicals

摘　　要：基于某油田高矿化度高钙镁的油藏条件,以缔合聚合物(DPAM)为基础,建立了该油藏聚合物驱溶液的2种增黏方法——表面活性剂增黏和化学交联剂增黏,分别评价了影响聚合物溶液黏度的主要因素。结果表明,在62℃、Ca^(2+)质量浓度540 mg/L、矿化度30000 mg/L下,两种体系的最佳配方分别是2000 mg/L DPAM+100 mg/L SDS和2000 mg/L DPAM+0.5%Zr,相较于DPAM,前者黏度提高25~31倍,后者提高30~45倍;DPAM/Zr体系较DPAM/SDS具有更稳固的空间网状结构,适宜的聚合物与化学增黏剂的质量配比是调控聚合物驱替液黏度的关键。Two viscosification methods for polymer flooding solutions based on associated polymer(DPAM)were established for high salinity and high calcium and magnesium reservoir conditions in a certain oilfield,namely surfactant viscosification and chemical crosslinking agent viscosification.The main factors affecting the viscosity of polymer solution were evaluated separately.The results show that at 62℃,Ca^(2+)concentration of 540 mg/L and mineralization degree of 30000 mg/L,the optimal material formulations are 2000 mg/L DPAM+100 mg/L SDS and 2000 mg/L DPAM+0.5%Zr,respectively.Compared to DPAM,the viscosity of the former increases by 25-31 times,while the latter increases by 30-45 times.The DPAM/Zr system has a more stable spatial network structure than DPAM/SDS,and the appropriate mass ratio of polymer and chemical viscosity enhancer is the key to regulating the viscosity of polymer displacement fluid.

关 键 词：高矿化度油藏 聚合物驱 缔合聚合物 黏度 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]