油田注水动态结垢趋势实验研究  

Experimental Study on Dynamic Scale Formation Trend of Water Injection in Oilfields

作　　者：雷富强 秦芳玲[1] 张淑侠 张世君 董晨曦 王丹丹 LEI Fuqiang;QIN Fangling;ZHANG Shuxia;ZHANG Shijun;DONG Chenxi;WANG Dandan(College of Chemistry and Chemical Engineering,Xi'an Shiyou University;Research Institute of Shanxi Yanchang Petroleum(Group)Co.,Ltd)

机构地区：[1]西安石油大学化学化工学院 [2]陕西延长石油(集团)有限责任公司研究院

出　　处：《油气田地面工程》2020年第10期22-25,共4页Oil-Gas Field Surface Engineering

基　　金：陕西省自然科学基础研究计划项目(2014JQ6219);延长石油集团公司项目“钻井液不落地处理技术研究”(ycsy2018ky-B-20);西安石油大学研究生创新与实践能力培养计划(YCS19212061)。

摘　　要：低渗透油田注水开发中的结垢对储层伤害严重,对结垢趋势进行科学、准确地评价十分必要。采用盘管式动态结垢试验装置,对低渗透油田三个区块的地层水、注入水及其混配水在地层和地表结垢过程进行了研究,并对结垢物进行分析。研究表明:A区注入水与地层水的配伍性较好,最佳混配比为50%;B区注入水与地层水的配伍性最好,混配后随注入水比例增加结垢总量逐渐减少;C区注入水与地层水的配伍性最差,应根据现场具体情况采取一定的水处理技术改进或调整。盘管式动态结垢试验装置克服了常规静态结垢预测法的不足,能较好地模拟注水开发动态过程,模拟结果准确可靠。It is necessary to predict the scaling trend scientifically and accurately since scaling is very harmful to reservoir in water injection development of low permeability oilfield.The formation water,injected water and mixed water from three blocks of low permeability oilfield are studied by using the coil tube dynamic scaling test device,and the scale substance is also analyzed.The study shows that the compatibility between the injected water and formation water in area A is good,and the best mixing ratio is 1:1;the compatibility between the injected water and formation water of area B is the best,and the amount of scaling gradually decreases with the increase of proportion of injected water;the compatibility between the injected water and formation water of area C is the worst,and the water treatment technology should be improved or adjusted according to the specific situation of the site.The device overcomes the deficiency of the conventional prediction method,and it can simulate the dynamic process of water injection development well with accurate and reliable results.

关 键 词：低渗透油田 注入水 地层水 混配比 结垢 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]