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标题

神华鄂尔多斯CO2 地质封存场地 多井并注模拟初探

作者

谢 健 张可霓 胡立堂

机构

北京师范大学水科学研究院; 贺州学院建筑工程学院

摘要

中国首个陆上咸水层CO2 地质封存示范项目的成功实施使得在鄂尔多斯盆地开展大规模CO2 地质封存成 为可能.为探讨在鄂尔多斯盆地典型低渗砂岩储层中实施50万t以上CO2 年封存量的注入封存方案,基于神华CCS项 目的场地储层结构和监测数据,采用储层多相流模拟软件TOUGH2-MP/ECO2N模拟了神华场地5点布井方案下进行 50万t·a-1的注入封存情景.分析了储层非均质性对模拟结果的可能影响.基于模拟结果的分析,认为在该场地实施多 井注入方案时井间距应大于2059m,为安全计,建议最少为3000m.若实施100万t·a-1的封存规模,初步估计需要采用 10口井进行同时注入.

关键词

鄂尔多斯;CCS;CO2 地质封存;咸水层;TOUGH2

引用

谢 健, 张可霓, 胡立堂.神华鄂尔多斯CO2 地质封存场地 多井并注模拟初探[J]. 北京师范大学学报(自然科学版),2015,51(6):636-642.

基金

国家能源应用技术及工程示范基金资助项目(NY20111102-1);国家科技支撑计划基金资助项目(2011BAC08B00)

分类号

U473.1

DOI

10.16360/j.cnki.jbnuns.2015.06.018

Title

Numerical investigation of geological CO2 storage with multiple injection wells for the Shenhua Ordos CCS project

Author

XIE Jian, ZHANG Ke-Ni , HU Li-Tang

Affiliations

College Of Water Science, Beijing Normal University

Abstract

A CCS demonstration project was implemented in 2010 by injecting 0.1 million tonnes of super-critical CO2 per annum into the brine-saturated sandstones at depths of more than 1600 m in the northeastern Ordos basin, China. The successful implementation of the first demonstration project for onshore geological CO2 sequestration in China justifies the feasibility of large-scale development of the geological CO2 sequestration in the Ordos Basin. To gain insight into the operational plans for geological CO2 sequestration at a scale of more than 500, 000 tonnes of CO2 per annum in low-permeability settings that is typical of the Ordos Basin, two five-spot well schemes were simulated with the reservoir simulator TOUGH2-MP / ECO2N for the Chenjiacun site of the Shenhua CCS project, with site-specific data. Reservoir heterogeneity and associated effects on simulation results were analyzed. Analysis of modeling results suggested that spacing of injection wells should be significantly larger than 2059 m and typically 3000 m or more. While further investigation is needed, the present preliminary suggestion of about million tonnes of sequestration of CO2 per annum would be that around 10 injection wells with spacing of no less than 3000 m be adopted for successful injection and secure storage.

Key words

Ordos, CCS, CO2 geological storage, saline aquifer, TOUGH2

cite

XIE Jian, ZHANG Ke-Ni, HU Li-Tang. Numerical investigation of geological CO2 storage with multiple injection wells for the Shenhua Ordos CCS project[J].Journal of Beijing Normal University(Natural Science),2015,51(6):636-642.

DOI

10.16360/j.cnki.jbnuns.2015.06.018

Copyright © 2014 Journal of Beijing Normal University (Natural Science)
Designed by Mr. Sun Chumin. Email: cmsun@mail.bnu.edu.cn