咸水含水层中CO_2地质封存井口压力的确定及应用  

Determination and application of the wellhead pressure on CO_2 geological storage projects in saline aquifers

作　　者：王景瑞[1,2] 胡立堂[1,2] 张可霓[1,2] 

机构地区：[1]北京师范大学水科学研究院,北京100875 [2]北京师范大学地下水污染控制与修复教育部工程研究中心,北京100875

出　　处：《工程勘察》2014年第4期38-41,共4页Geotechnical Investigation & Surveying

基　　金：能源科技发展项目专项(NY20111102-1);环保公益性行业科研专项项目(201409099)

摘　　要：CO2地质封存是减少二氧化碳排放的有效途径之一,井口压力的大小直接关系到封存项目的有效性和安全性。本文总结了井口压力求取的常规方法和漂移流模型解析法,并在实际封存场地进行了比较应用分析,结果发现漂移流模型解析法对井中流体运动刻画的更为准确,所得的结果与实际值更接近,而且井径大小对井口压力有一定程度的影响,其结果可为实际CO2地质封存项目的实施提供技术支持。Geological sequestration of CO2 is one of effective approaches to reduce CO2 emission. The Value of the wellhead pressure is directly related to the safety and effectiveness of the whole project. This paper first summarized the conventional method and the drift-flux model, and then applied these methods to a practical CO2 geologic sequestration project. The results demonstrate that the drift-flux model can subtly characterizes the fluid flow in the wellbore and has a better precision, the analytical values using the drift-model are much closer to the actual value, and the wellbore inner diameter has a certain degree of effect on the wellhead pressure. The findings could provide technical support for CO2 geologic sequestration project.

关 键 词：CO2地质封存 井口压力 漂移流模型 解析法 

分 类 号：P641.2[天文地球—地质矿产勘探]