一种盐岩层蠕变参数的现场评价方法  

ON-SITE EVALUATION METHOD FOR THE INVERSION ANALYSIS OF SALT FORMATION CREEP PARAMETERS

作　　者：韩建增[1] 施太和[1] 何开平[2] 谢国民[2] 

机构地区：[1]西南石油学院石油工程学院,四川南充637001 [2]江汉石油管理局钻井工程处

出　　处：《西南石油学院学报》2001年第3期26-29,共4页Journal of Southwest Petroleum Institute

摘　　要：盐岩层蠕变参数选值的合理性直接影响井壁应力和稳定性分析结果 ,然而 ,地面岩心试验常与现场实际情况不符 ,影响所得结果的正确性。在假设盐岩层服从粘弹性模型以及初始地应力和泊松比均为与时间无关的常数的基础上 ,依据现场量测信息 ,建立了反演确定盐岩层弹性常数以及粘性常数的反演分析法。研究表明 ,用现代岩土工程反演理论确定盐岩层的蠕变参数 ,比做地面岩心试验更符合实际 ,而且成本低 。The determination of creep parameters of salt formation directly influenced the analysis results of borehole-wall stresses and stability. However, laboratory core testing is often not true of field situation and affects the correctness of the results. This paper takes the assumptions of salt formation submitted to the behavior of viscoelastic model and initial in-situ stress and Poisson's ratio not varying with time. Based on field measured information, a method for the inversion analysis of elastic constants and viscous parameters of salt formation was established. The results indicated that the modern inversion analysis theory of rock-soil engineering has the less cost and more feasible to the laboratory core testing in the determination of creeping parameters of salt formation.

关 键 词：盐岩层 蠕变参数 反演分析 现场评价方法 石油钻井 

分 类 号：TE21[石油与天然气工程—油气井工程]