岩心加压饱和地层水时间计算方法  

Method to Calculate the Core Pressurized Saturation Time of Formation Water

作　　者：苏广乐 李晓平[1] 袁淋[2] 杜唐钟 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500 [2]中石化西南油气分公司川东北采气厂,四川阆中637400 [3]长庆油田第十采油厂,甘肃庆城745100

出　　处：《重庆科技学院学报（自然科学版）》2016年第1期34-36,共3页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家杰出青年科学基金项目"油气渗流力学"(51125019)

摘　　要：将岩心抽真空后加压饱和流体的过程视为外边界定压、内边界封闭的岩心内径向渗流,建立渗流模型和定解条件,首先将方程和定解条件无因次化,然后进行拉普拉斯变换,利用数值反演后编程得到无因次压力与无因次时间的关系曲线。根据无因次时间的定义,将岩心充分饱和状态的无因次时间变换为真实时间。实例计算结果表明,在较短的时间内,岩心就能达到完全饱和状态。This paper will consider the process of saturating core with liquid as a radial flow in core with a constant pressure outer boundary and closed inner boundary. After the differential equation and boundary conditions is estab- lished, we can rewrite them in dimensionless form, then in Laplasse transform. Finally, by numerical inversion method we could get the curve of dimensionless pressure and dimensionless time. According to the definition of the dimensionless time, the dimensionless time when the core was fully saturated is converted into the real time. The example shows the core is completely saturated in a relatively short time.

关 键 词：岩心 抽真空 加压饱和 渗流模型 饱和时间 

分 类 号：TE312[石油与天然气工程—油气田开发工程]