松辽盆地深凹陷层控型地热资源认识与初步规划  

Understanding and Preliminary Planning for Layer-Controlled Geothermal Resources in Deep Sag of Songliao Basin

作　　者：王力 马晓伟[1] 于成龙[1] 韩享哲 田雨露 Wang Li;Ma Xiaowei;Yu Chenglong;Han Xiangzhe;Tian Yulu(Drilling Technology Research Institute of Daqing Drilling Engineering Company,Daqing Heilongjiang 163000)

机构地区：[1]大庆钻探工程公司钻井工程技术研究院,黑龙江大庆163000

出　　处：《中外能源》2024年第12期26-33,共8页Sino-Global Energy

基　　金：中国石油天然气股份有限公司攻关性应用性科技专项“油气和新能源融合发展关键技术研究与应用”(编号:2023ZZ31)。

摘　　要：松辽盆地地热资源主要由上地幔隆起作用形成,盆地中央地温梯度高,向外依次递减,大地热流值为34~95mW/m^(2),平均热流值为79mW/m^(2)。热源一部分来自沉积本身产生的热量,另一部分为从基底传递上来的热量。松辽盆地是具有上、中、下三套热储体系的沉积盆地深凹陷层控型地热资源,虽然储量丰富但品位相对较低,且在地热资源开发过程中还存在一些问题,包括开发目标定位的盲目性以及现有工程技术的不适应性等。鉴于此,未来应加大对松辽盆地地热资源的勘探力度,以更加全面地掌握资源分布与特性;通过超长重力热管技术改造废弃井,降低地热开采成本,提高经济效益;积极探索多梯次逐级加热地热开采系统的应用,并结合“1拖N”模式,实现地热资源利用的最大化;推进“地热能+”多能协同优化战略模式,以提升地热开采的整体效能与可持续性。The geothermal resources in the Songliao Basin are mainly formed by upper mantle uplift.The geothermal gradient is high in the basin center and decreases outward successively.The terrestrial heat flow value ranges from 34 to 95mW/m^(2) with an average of 79mW/m^(2).Part of the heat source comes from the heat generated by its sediment,and the other part comes from the heat transferred from the basement.The Songliao Basin has layer-controlled geothermal resources with three sets of upper,middle,and lower thermal storage systems in deep sag.Although the reserves are rich,the grade is relatively low.There are still some issues in the development of geothermal resources,including the blindness of development target positioning and the inadaptability of existing engineering technology.Because of this,we should strengthen the exploration of geothermal resources in the Songliao Basin to understand the distribution and characteristics of resources.The abandoned wells may be transformed through ultra-long gravity heat pipe technology to reduce geothermal mining costs and improve economic benefits.The multi-stage step-by-step heating geothermal mining systems may be tried to apply actively to maximize the utilization of geothermal resources with the"1-to-N"model.The"geothermal energy+"coordination and optimization strategic model of multiple energy sources may be promoted to improve the overall efficiency and sustainability of geothermal mining.

关 键 词：地热资源 地温梯度 热储体系 多梯次逐级加热 重力热管技术 多能协同 

分 类 号：P314[天文地球—固体地球物理学] TK521[天文地球—地球物理学]