摘要
研究铁离子、Ca^(2+)、Mg^(2+)、含盐量、B^(3+)、Al^(3+)对压裂液的影响,实验表明,Mg^(2+)、Al^(3+)等浓度较低,对重复利用影响较小,可以不予考虑,铁离子、Ca^(2+)、含盐量、B^(3+)通过去除处理后,压裂液最高耐温130℃,经过2 h剪切后,最低黏度为83 mPa·s,滤失系数为6.54×10^(-4)m/min^(1/2),采用盐水和煤油作为流动介质,岩芯伤害率最高为21.16%,压裂液破胶后黏度为3.75 mPa·s,表面张力为22.7 mN/m,均满足应用指标要求。
The influence of the ions of iron ion,Ca^(2+),Mg^(2+),salt content,B^(3+)and Al^(3+)on fracturing fluid are tested.The experiment showed that due to the low concentration of Mg^(2+),Al^(3+)can be ignored by the small effects.When the main affecting ions of iron ion,Ca^(2+),salt content,B^(3+)was removed,the fracturing fluid system can withstand temperature up to 130℃,the lowest viscosity up to 83 mPa·s after 2 h shearing and the filtration coefficient is 6.54×10^(-4)m/min^(1/2).The damage rate tests show that the maximum damage rate is 21.16%,when salt water and kerosene are used as mobile media,the viscosity and surface tension of gel breaking liquid are 3.75 mPa·s and 22.7 mN/m respectively,which meet the requirements of application indexes.
作者
沈燕宾
谢元
许磊
张颖
李霁阳
SHEN Yan-bin;XIE Yuan;XU Lei;ZHANG Ying;LI Ji-yang(Shaanxi Key Laboratory of Fine Petroleum Chemicals,Shaanxi Chemical Industry Research Institute Co.,Ltd.,Xi’an 710054,China)
出处
《应用化工》
CAS
CSCD
北大核心
2022年第7期1995-1999,2003,共6页
Applied Chemical Industry
基金
陕西省科技推广项目(2019TG-008)
陕西延长石油(集团)有限责任公司科研项目(ycsy2020ky-A-07)。
关键词
压裂
返排液
重复利用
离子
fracturing fluid
flowback fluid
reuse technology
ion
