AM/AMPS/AN/NVP四元共聚物耐温降滤失剂制备及室内评价  

PREPARATION AND EVALUATION OF QPFR

作　　者：张贵梓[1,2] 李琪[1] 

机构地区：[1]西安石油大学 [2]中国石化胜利油田渤海钻井一公司

出　　处：《天然气勘探与开发》2011年第2期58-61,82,共4页Natural Gas Exploration and Development

基　　金：国家自然科学基金项目(20376043);陕西省自然科学基金项目(2003B02)

摘　　要：以氧化-还原引发体系合成了丙烯酰胺/丙烯腈(AN)/2-丙烯酰氧基-2-甲基丙基磺酸(AMPS)/N-乙烯基吡咯烷酮(NVP)四元共聚产物QPFR。研究了原料中单体组成对QPFR特性粘数的影响规律,室内实验评价了QPFR在水基钻井液中的抗高温耐盐性能和降失水性能,分析了QPFR的作用机理。结果表明,原料中单体组成对QPFR特性粘数的影响较大,QPFR用作钻井液降滤失剂时表现出较好的耐温抗盐性能;QPFR分子上的磺酸基等极性基团是其产生作用效能的分子基础。QPFR,a kind of quadripolymer of acrylamide/acrylonitrile(AN) /2-propylene acyloxy-2 methyl propyl sulfonic acid sodium(AMPS) /N-vinyl pyrrolidone(NVP) is systematically synthesized by redox.In addition,the effect of monomer composition within raw material on intrinsic viscosity of QPFR is studied.For QPFR,some properties of temperature and salt resistance,and water reduction and loss in water-based drilling fluid are also evaluated in lab.Results show that:(1) the effect of monomer composition on intrinsic viscosity is large;(2) as a filtrate reducer for drilling fluid,QPFR appears a better temperature and salt resistance;and(3) sulfonic group in QPFR is the molecular basis to cause the effect.

关 键 词：四元共聚物 特性粘数 降滤失剂 耐温性能 抗盐性能 

分 类 号：TE254.4[石油与天然气工程—油气井工程]