深部煤层CO2地质存储与CH4强化开采的有效性理论研究

项目名称： 深部煤层CO2地质存储与CH4强化开采的有效性理论研究

项目编号： No.41330638

项目类型： 重点项目

立项/批准年度： 2014

项目学科： 地质学

项目作者： 桑树勋

作者单位： 中国矿业大学

项目金额： 300万元

中文摘要： 以自主开发的“模拟超临界CO2/H2O体系与煤岩地球化学反应实验装置”和“模拟CO2注入煤层渗透性变化实验装置”为实验模拟研究平台，基于沁水盆地示范工区及其深部温、压、水、地应力条件下无烟煤储层基本地质模型，探索深部无烟煤储层条件下超临界CO2注入煤层体积应力效应和CO2/H2O/煤岩地球化学反应效应本质，煤储层结构演化、吸附解吸、渗透性变化和流体运移规律，吸附解吸-扩散-渗流-驱替耦合关系及其物理化学过程连续性等关键科学问题，研究构建深部煤层CO2注入-吸附解吸-流体运移-CH4产出地质模型、数学模型，开发数值模拟技术；揭示深部无烟煤储层CO2-ECBM有效性机理，形成CO2-ECBM有效性评价方法，科学回答以沁水盆地为代表的深部无烟煤储层CO2-ECBM有效性问题；为我国实施深部煤层CO2-ECBM工程探索提供科学依据，发展CO2-ECBM温室气体减排及其大气环境效应评价的关键理论。

中文关键词： CO2地质存储;CH4强化开发;深部无烟煤储层;有效性机理;评价方法

英文摘要： Laying the independent development experimental devices to simulate geochemical interaction between supercritical CO2/H2O system and coals and to imitate permeability change of coal reservoir with CO2 injection as fundamental innovation platforms, and considering anthracite reservoir basic geological model under conditions of temperature, fluid pressure,moiture and crustal stress in the deep of Qinshui basin as case study background, the applicants attempt to study geochemical interaction effect and volume and stress effect when CO2 injected into deep anthracite reservoirs, sorption, containment, fluid migration and displacement jointly controlled by both the effects, and geological and mathmetical models relating to the continuous process from CO2 injection, sorption, containment, fluid migration and displacement to CH4 output;to develop numerical modelling software for CO2-ECBM with independent intellectual property; to establish a methodological system of CO2-ECBM simulation and assessment; to generate CO2-ECBM theoritical model and technical mode of deep anthracite; to found validation theory of CO2-ECBM mainly aiming at CO2 storage in deep coal seams; and to scientifically answer the question on CO2-ECBM validation of deep anthacite represented by Qinshui basin. Consequently,the research will provide scentific evidence for China to carry out CO2-ECBM engineering exploration of deep coal seams, and lay the theoritical foundation for greenhouse gas emission reduction and its environmental effect for atmosphere.

英文关键词： CO2 Geological Storage;CH4 Enhanced Recovery;Deep Anthracite seams;Validation Mechanism;Evaluation Methodology