采用控制容积法数值模拟盐岩蠕变  

SIMULATION ON CREEP OF SALT FORMATIONS BY VOLUME-CONTROL METHOD

作　　者：杨凤香[1] 宋胜利[1] 吴田忠[1] 李俊海[1] 邹峰梅[1] 

机构地区：[1]中国石油化工股份有限公司中原油田分公司采油工程技术研究院,濮阳457001

出　　处：《岩石力学与工程学报》2004年第14期2377-2380,共4页Chinese Journal of Rock Mechanics and Engineering

摘　　要：中原油田盐岩层厚度为50～200m,盐岩层在蠕动、变形过程中,对套管产生非均匀外挤力,造成盐岩层套管损坏。采用控制容积法,通过三维模型模拟实际盐岩地层情况,得出了纵向油藏剖面盐岩层的蠕变速度、位移量、应力场及套管所承受的横向推挤力分布规律。此项研究成果可用于钻遇盐岩层时的钻井参数调整、套管柱的工程设计、套损井防治。The depth of salt formations in Zhongyuan Oilfield is 50～200 m. The salt formations will generate a non-uniform external squeeze stress during their creep deformation and the casing pipes may be damaged. Volume-control method is employed in the 3D numerical simulation of actual formation condition. Creep velocity,displacement and the distribution of horizontal squeeze stress on the casing pipe are obtained. The results are useful for adjustment of drilling parameters,design of casing string and prevention of casing damage.

关 键 词：石油工程 盐岩 蠕变 控制容积法 数值模拟 套管损坏 

分 类 号：TE21[石油与天然气工程—油气井工程] TD313.1[矿业工程—矿井建设]