异步交联深部调剖体系的室内实验  

Laboratory Experiment on Asynchronous Crosslinking System for Deep Profile Control

作　　者：陈泽华 赵修太 王增宝 

机构地区：[1]中国石油大学石油工程学院,山东青岛266580

出　　处：《新疆石油地质》2015年第3期317-321,共5页Xinjiang Petroleum Geology

基　　金：国家科技重大专项(2011ZX05002-005);中央高校基本科研业务费专项(27R1202006A)

摘　　要：用有机铬和酚醛树脂交联剂,配制了一种异步交联深部调剖体系,其配方为5 000 mg/L部分水解聚丙烯酰胺+0.02%有机铬+0.2%酚醛树脂。实验结果表明,该体系一次成胶时间为30 h左右,成胶强度为0.021 MPa;二次成胶时间为90 h,成胶强度为0.062 MPa.考察了该调剖体系成胶性能的影响因素,包括温度、矿化度、p H值等。该体系的特点是交联剂总用量低,成本低;一次交联使调剖体系的黏度在短时间内快速上升,从而防止堵剂大量漏失,使其大量进入低渗透层;二次交联使深部位的冻胶成胶强度提高。该体系适合封堵大孔道或者裂缝发育的强非均质油藏。An asynchronous crosslinking system for deep profile control using organic chrome crosslinking agent and phenolic resin cross-linking system was developed.The following formula was screened out as the optimum system：5 000 mg/L HPAM＋0.02% organic chrome ＋0.2% phenolic resin.The experiment results show that the first crosslinking time of the system is about 30 h,and the second crosslinkingtime is about 90 h; the first crosslinking strength is 0.02 MPa,and the second crosslinking strength is 0.062 MPa.The influencing factor ofthe gelling properties of the system,including temperature,salinity and p H were investigated.The character of the system is that the totaldosage of the crosslinking agent is low,and the cost is low; the viscosity of the system can increase quickly in short term through the firstcrosslinking,which inhibit the leakage of the gel and its infiltration into low permeable layers; the strength of the gel can be enhanced greatlythrough the second crosslinking.The system can be applied to the the strong heterogeneous formation with large pores or developed fractures.

关 键 词：异步交联 聚合物冻胶 深部调剖 低成本 防漏失 选择性封堵 

分 类 号：TE357.43[石油与天然气工程—油气田开发工程]