一种自制高温自生酸体系室内评价  

Evaluation on a autogenous acid system in high-temperature

作　　者：于尚 陈洪[2] 杨梅[3] 孙锡泽 王大明 杨雅兰 FU Shang;CHEN Hong;FANG Mei;SUN Xi-ze;WANG Da-ming;FANG Va-lan(School of Petroleum and Natural Gas Engineering,Southwest Petroleum University,Chengdu 610500,China;State Key Lab of Oil and Gas Reservoir Geology-and Exploitation,Southwest Petroleum University,Chengdu 610500,China;Institute of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500 [2]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [3]西南石油大学化学化工学院,四川成都610500

出　　处：《应用化工》2018年第7期1353-1355,共3页Applied Chemical Industry

基　　金：国家自然科学基金(51674210)

摘　　要：以一种常温下呈中性,高温下可分解生成盐酸的氯代有机物L作为生酸母体,与1%缓蚀剂、3%铁离子稳定剂、3%防膨剂复配,成为一种改造高温储层的自生酸L,并对其进行评价。结果表明,L在高温下H+转换率可以达到55%以上,有效溶蚀率可以达到40%以上,在低温下基本不释放H+,对管道腐蚀性极低,用自生酸L所配制的解堵酸液基本可以恢复到污染前岩心的渗透率(渗透率恢复率达94.96%),从源头解决大修作业对地层污染问题。L is neutral at room temperature and is decomposed into hydrochloric acid under high temperature. It can be used as raw acid matrix and then becomes an autogenous acid L to modify high temperature reservoirs after the acid is mixed with 1% corrosion inhibitor,3% iron ion stabilizer and 3% anti-swelling agent. The evaluation is conducted and the results show that L makes the H＋conversion rate reach over55% at high temperature,the effective dissolution rate can reach more than 40%. H＋will not be generated at low temperature. Besides,the pipeline corrosion is very low,block remover acid liquid made by autogenous acid L can basically restore the permeability of the core before it was polluted（ permeability recovery rate is up to 94. 96%）,all this indicates that the pollution of formation resulted by overhaul can be addressed essentially.

关 键 词：自生酸 高温 解堵 酸化 地层污染 

分 类 号：TQ51[化学工程] TQ111