摘要
由于我国盐穴储气库建库地质条件较为复杂,均为多夹层盐岩建库,造腔过程中会形大量的不溶物残渣。针对不溶物残渣在卤水中的沉降规律开展了室内实验,分析了影响不溶物残渣沉降速度的因素。结果表明不溶物残渣的沉降速度主要受自身粒度和卤水波美度的影响,颗粒的沉降速度随粒度的增加而增大,随卤水波美度的增加而逐渐减小。粒度小于0.1mm的残渣颗粒占残渣总量的40%左右,在卤水中基本不发生沉降,有利于造腔卤水的携带排出,能够提高盐腔有效利用空间进而扩大储气规模。
The geological conditions of salt cavern underground gas storage（ UGS） in China is more complex,which is all multi-interlayer salt rock. A large number of insoluble residue is formed during the process of salt leaching. The experiment on the sedimentation of insoluble residue in brine was carried out. The affecting factors of the sedimentation rate of insoluble residue was analyzed. The results show that the sedimentation rate of the insoluble residue was mainly affected by particle size and the brine Degrees. The sedimentation rate of the residual particles increases with the increase of the particle size,and it decreases as the brine Baume Degree increases. That the insoluble residual particles with particle size less than 0. 1 mm account for about 40% of the total residue which nearly do not sediment in brine is favorable to enhance effective space of salt cavern and then enlarge gas capacity.
出处
《盐科学与化工》
CAS
2017年第11期10-12,共3页
Journal of Salt Science and Chemical Industry
基金
中国石油集团公司重大专项课题"地下储气库地质与气藏工程关键技术研究与应用"(2015E-4002)
关键词
不溶物残渣颗粒
粒度
卤水
沉降速度
盐穴储气库
insoluble residual particles
particle size
brine
sedimentation velocity
salt cavern UGS
