摘要
中原油田大部分油水井套管的损坏发生在盐膏层段,造成套管损坏的根本原因是盐膏层的蠕变.通过盐岩的三轴蠕变实验,建立盐岩变形的本构关系;通过数值模拟计算岩盐蠕变的速度、位移及作用在套管上的非均匀外挤力.
In Zhongyuan Oilfield,the oil/water well casing failure appears mainly salt-gypsum stratum,and the cause leading to the casing failure is the creeping of the salt-gypsum formation.The constitutive relation of the salt-gypsum deformation is presented based on the triaxial test of the salt-gypsum rock,and the creeping speed and displacement of the salt-gypsum rock and the inhomogeneous collapse pressure acting on the casing by the salt-gypsum rock are calculated by numerical simulation.
出处
《西安石油大学学报（自然科学版）》
CAS
2008年第1期40-42,共3页
Journal of Xi’an Shiyou University（Natural Science Edition）
关键词
盐膏层
岩盐蠕变
套管损坏
数值模拟
salt-gypsum formation
salt-gypsum creeping
casing failure
numerical simulation
