油气叠合区气田废水回注油层配伍性研究  

Study on the compatibility of oil reservoir reinjection in gas field wastewater in oil-gas superposition area

作　　者：余洪飞 鲁尚荣 李岩 刘宁 姚瑞清[1] 李稳宏[1] YU Hongfei;LU Shangrong;LI Yan;LIU Ning;YAO Ruiqing;LI Wenhong(School of Chemical Engineering,Northwestern University,Xi’an 710069,China;Oil and Gas Process Research Institute,Changqing Oilfield Branch,China National Petroleum Corporation,Xi’an 710000,China;Shaanxi Yanchang Petroleum(Group)Co.,Ltd.,Xi’an 710065,China)

机构地区：[1]西北大学化工学院,陕西西安710069 [2]中国石油天然气股份有限公司长庆油田分公司油气工艺研究院,陕西西安710000 [3]陕西延长石油(集团)有限责任公司,陕西西安710065

出　　处：《应用化工》2024年第8期1812-1816,共5页Applied Chemical Industry

摘　　要：以鄂尔多斯某油气田叠合区气田和油田废水各代表性站点水质检测分析结果为基础,进行了气田与油田废水结垢趋势预测、静态配伍性研究,结果表明:在25℃与60℃下,QT-1与YT-1的不同比例混配下,结垢趋势均小于QT-2与YT-1、QT-3与YT-1、YL-2与YT-1和YL-1与YT-1。QT-1与YT-1在1∶9混配,QT-2与YT-1在5∶5混配,QT-3与YT-1在1∶9混配,YL-1与YT-1在5∶5混配,YL-2与YT-1在1∶9混配时失钙当量最低,结垢趋势最小。根据油气田废水配伍性实验结果,确定配伍性最优的QT-1与YT-1,研究其按比例混合后回注地层的配伍性实验,其结果为单注对地层伤害率为14%,合注对地层伤害率为46.2%。Based on the results of water quality testing and analysis of water quality of representative stations,the results showed that the scaling trend of QT-1 and YT-1 was smaller than that of QT-2 and YT-1,QT-3 and YT-1,YL-2 and YT-1,and YL-1 and YT-1 at 25℃ and 60℃.QT-1 and YT-1 were mixed at 1∶9,QT-2 and YT-1 were mixed at 5∶5,QT-3 and YT-1 were mixed at 1∶9,YL-1 and YT-1 were mixed at 5∶5,and YL-2 and YT-1 were mixed at 1∶9 when the calcium equivalent was the lowest and the scaling tendency was the smallest.According to the results of the compatibility experiment of wastewater from oil and gas field,QT-1 and YT-1 with the best compatibility were determined,and the compatibility experiment of reinjection formation after proportional mixing was studied,and the result was that the damage rate of single injection to the formation was 14%,and the damage rate of combined injection to the formation was 46.2%.

关 键 词：气田废水 配伍性 结垢趋势 

分 类 号：TQ016[化学工程] TE133[石油与天然气工程—油气勘探]