耐温抗盐的醛交联聚合物弱凝胶成胶时间的控制  

Adjustment of Gelation Time for Heat Resistant and Salts Tolerant Mixed Aldehydes/Polymer Weak Gel

作　　者：张还恩[1] 吕茂森[2] 张金铃[2] 杨希翡[2] 贺爱民[3] 张卫艳[2] 鞠立明[2] 谢立新[2] 

机构地区：[1]中国地质大学(北京)能源地质系,北京100083 [2]中国石化中原油田分公司勘探开发研究院,河南濮阳457001 [3]中国石化中原油田分公司工程监督中心,河南濮阳457001

出　　处：《油田化学》2003年第2期152-153,共2页Oilfield Chemistry

摘　　要：用于高温、高矿化度油田调驱的混合醛交联聚合物HPAM弱凝胶,在90℃下的成胶时间约为200h,对油藏和调驱作业的适应性差,针对这种弱凝胶体系研制了由金属化合物和有机物复配而成的交联反应促进剂,代号JCH M。在用矿化度1.6×105mg/L、Ca2++Mg2+浓度5000mg/L的盐水配制、HPAM浓度1500mg/L、交联剂浓度500mg/L、pH=7.0的成胶溶液中加入JCH M10～70mg/L,可使溶液90℃下的成胶时间由200h缩短到70～1h,在90℃维持20d后在90℃测定的凝胶粘度由520mPa·s升到550～730mPa·s。实验结果表明通过改变HPAM或交联剂浓度控制成胶时间的方法是不适当的。表1参2。For the titled mixed aldehydes/HPAM weak gel developed for profiling/flooding reservoirs of high temperatures and high TSD, the gelation time is about 200 hrs and does not adapt to many of the reservoirs and profiling/flooding operations. To solve this problem a crosslinking promoter, JCHM, is prepared, being a combination of metal and organic compounds. Interoducing JCHM at use level 10—70 mg/L into a gelling solution comtaining HPAM at 1 500 mg/L, mixed aldehyde crosslinker at 500 mg/L in salt water of TSD=1.6×105 mg/L, content of Ca2++Mg2+=5 000 mg/L, and of pH=7.0 leads to decrease in gelation time at 90℃ from 200 hrs to 70—1 hr and to increase in viscosity at 90℃ of the gel fromed at 90℃ in 20 days from 520 mPa·s to 550—730 mPa·s. The experimental data obtained also show that controlling gelation time by varying HPAM or crosslinker concentration is not a proper way.

关 键 词：耐温性 抗盐性 醛交联聚合物弱凝胶 成胶时间 控制 混合醛交联剂 油田化学剂 

分 类 号：TE39[石油与天然气工程—油气田开发工程] TE357.46