矿产保护与利用2025，Vol.45Issue(5)：14-29,16.DOI:10.13779/j.cnki.issn1001-0076.2025.05.001
富油煤原位热解面临的挑战与技术对策
Challenges and Technical Countermeasures of In Situ Pyrolysis of Tar-rich Coal
摘要
Abstract
In situ pyrolysis of tar-rich coal is a new technology for coal based oil and gas development based on the characteristics of national fossil energy endowment.Currently,this technology is in a transitional phase from indoor research to field trials.There are issues such as an incomplete theoretical technical system,unclear technical research directions,and unclear collaborative development paths.To accelerate industrialization,the technical advantages of in situ pyrolysis of tar-rich coal were analyzed,a theoretical technical framework was established,and based on a review of the current state of research at home and abroad,the main theoretical technical challenges and countermeasures at this stage were clarified.Research shows that:(1)In situ pyrolysis of tar-rich coal has three technical advantages:great resource potential,high resource abundance,low geological risk and good technical compatibility.(2)"Generation-flow-change"is the core scientific issue of in situ pyrolysis of tar-rich coal.The"four characteristics"issues of geological suitability,pyrolysis efficiency,production safety,and economic feasibility are the core technical issues.Based on the technical process,the following key areas have been identified:optimization of sweet spot sections and evaluation of sealing integrity,drilling and completion of wells and reservoir modification,in situ heating and temperature-pressure control,optimization of development plans and enhanced oil recovery,and tar and gas lifting and surface gathering and processing.(3)China is at the forefront of the world in terms of theoretical and technological research and field trials related to in situ pyrolysis of tar-rich coal.But there are still challenges in terms of technology and profitability.In terms of mechanism research,efforts should be made to strengthen research on the flow mechanism of"variable temperature,variable pressure,and variable phase"and the multi-field coupling mechanism of thermal-fluid-solid mechanics and chemistry.In terms of key technologies,research and development efforts should be focused on coal seam complex volume fracture network modification technology,in situ composite heating technology,temperature and pressure control technology,and risk assessment and monitoring and prevention technology.In terms of improving economic efficiency,it is recommended to achieve synergistic development with new energy,coalbed methane,underground coal gasification,CCUS,and modern coal chemical industry through measures such as"local consumption of green electricity,coalbed methane enhanced recovery,continued development of underground coal gasification,in situ CO2 storage,and chemical raw material preparation,"thereby enhancing economic competitiveness.关键词
富油煤/富油煤原位热解/煤炭地下气化/研究现状/技术挑战/对策Key words
tar-rich coal/in situ pyrolysis of tar-rich coal/underground coal gasification/research status/technical challenges/countermeasures分类
矿山工程引用本文复制引用
东振,陈超,周小淞,陈浩,陈艳鹏,鲍敬伟,张梦媛,王兴刚,薛俊杰,龚万兴,赵宇峰,蔡承政..富油煤原位热解面临的挑战与技术对策[J].矿产保护与利用,2025,45(5):14-29,16.基金项目
中国石油青年科技专项(2024DQ03221) （2024DQ03221）
集团公司科学技术委员会战略研究与咨询项目(2025DQ0728) （2025DQ0728）
中国石油勘探开发研究院基础研究项目(101001cq0b52394) （101001cq0b52394）
