沉积盆地中深层水热型地热资源评价体系研究与应用  

Study and Application of the Evaluation System Concerning the Hydrothermal Type Geothermal Resource at the Middle and Deep Layers of Sedimentary Basin

作　　者：刘国勇[1] 赵忠新[1] 任路[1] 孟令箭 LIU Guoyong;ZHAO Zhongxin;REN Lu;MENG Lingjian(PetroChina Jidong Oilfield Company)

机构地区：[1]中国石油天然气股份有限公司冀东油田分公司

出　　处：《油气与新能源》2022年第2期38-47,54,共11页Petroleum and new energy

摘　　要：“双碳”背景下,地热资源广受重视,尤其是沉积盆地中深层水热型地热资源。近年来,随着对这类资源重视程度的增加和开发规模增大,项目选择、立项、建设与运行阶段都需要系统的资源评价体系来支撑。针对不同阶段的地热开发情景,提出了一套沉积盆地中深层水热型地热资源的评价体系:项目选择阶段,需要开展大地热流值、区域地温梯度、区域地幔隆起幅度等方面以地质背景为重点的区域评价,确定项目是否建设,明确目标地区地热资源“有没有”;项目立项阶段,需要开展涵盖5类指标的重点评价,权衡地热能否开发,明确地下资源“行不行”;项目建设阶段,需要开展以具体技术参数和经济效益为重点的精细评价,明确各项开发参数,做好地面地下一体化经济评价,明确项目整体效益“好不好”;项目运行阶段,需要开展动态评价,通过热场监测与调整,确保热场更稳、周期更长,明确项目整体效益“优不优”。该评价体系可为相关地热资源评价提供方法参考和应用借鉴。Against the backdrop of“dual-carbon”goal,geothermal resource has been widely highlighted,especially the hydrothermal type geothermal resource at the middle and deep level of sedimentary basin.In recent years,with the increasing attention to this type of resources and the expansion of the scale of development,the stages of project selection,approval,construction and operation are all in need of a systematic resource evaluation system to support.A set of evaluation system targeting at the hydrothermal type geothermal resource at the middle and deep layers of sedimentary basin has been proposed aiming at the geothermal development scenarios at different stages:the stage of project selection is in need of the regional evaluation focusing on geological background including terrestrial heat flow value,Regional geothermal gradient and also the amplitude of regional mantle uplift.In so doing,the project construction could be determined and the geothermal resource in a targeted region can be possibly found;at the stage of project approval,the key evaluation needs to be carried out involving five kinds of indicators in order to weigh whether geothermal can be developed and determine if the underground resources are“in proper condition”;at the stage of project construction,it proves significant to conduct the detailed evaluation highlighting specific technical parameters and economic benefits,clarify various development parameters,and do a great job in the economic evaluation of ground and underground integration,so as to judge if the overall effect of the project is“good or not”;at the stage of project operation,the dynamic evaluation in three aspects is needed to ensure a more stable thermal field and a longer cycle by way of thermal field monitoring and adjustment,which could help determine whether the overall benefit of the project is“better or not”.All in all,the evaluation system can offer method and application reference to related geothermal resources evaluation.

关 键 词：沉积盆地 沉积盆地中深层 地热资源 水热型 评价体系 

分 类 号：TK521[动力工程及工程热物理—热能工程]