准噶尔盆地深部咸水层CO_(2)地质封存适宜条件分析  

Available conditions for geological storage of CO_(2)in deep saline aquifers,Junggar Basin

作　　者：杨皝 杨镱婷[1] 陈磊[1] 肖贝 芦慧[1] 张译丹[1] YANG Huang;YANG Yiting;CHEN Lei;XIAO Bei;LU Hui;ZHANG Yidan(Exploration and Development Research Institute,PetroChina Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China)

机构地区：[1]中国石油新疆油田公司勘探开发研究院,新疆克拉玛依834000

出　　处：《天然气勘探与开发》2024年第6期105-115,共11页Natural Gas Exploration and Development

基　　金：中国石油天然气股份有限公司重大科技专项(编号:2021ZZ01-05)。

摘　　要：深部咸水层CO_(2)地质封存是实现碳中和目标潜力最大的碳减排技术。为全面评估准噶尔盆地深部咸水层CO_(2)封存潜力,综合利用盆地断裂、历史地震、单井钻试及地层水等资料,从区域地质、构造演化、断裂与地震活动、地温、地层水、封存储盖组合6个方面,开展了分区分层系的封存条件评估。研究结果表明:(1)准噶尔盆地适宜地质封存的主要层位为中生界的白垩—侏罗系;(2)东部和腹部地区的断裂和地震活动趋势较弱,能够保障地质封存的安全性;(3)盆地整体地温条件适宜开展地质封存;(4)白垩系和东部、腹部地区的咸水层条件最适宜开展地质封存;(5)白垩系清水河组、侏罗系三工河组和八道湾组的储集层与其上盖层是最适宜开展地质封存的储盖组合。结论认为3套封存储、盖层的埋深条件适中、储盖层岩性适宜、储集层厚度条件适中、盖层封盖性良好,盆地具有开展地质封存的长远发展潜力。The geological storage of carbon dioxide(CO_(2))in deep saline aquifers is the most promising technology to reduce carbon emission and achieve the carbon-neutrality goal.So,in an effort to thoroughly evaluate such storage in Junggar Basin,some data of faults,earthquake events,drilling and well test,and formation water in this basin were employed to assess storage conditions in each block and stratum from six aspects of regional geology,tectonic evolution,faulting or earthquake activities,geotemperature,formation water,and reservoir-caprock assemblage.Results show that,(i)Mesozoic Cretaceous to Jurassic systems,as the main strata,are available for this storage in Junggar Basin;(ii)eastern and central basin is not prone to faulting or earthquake activities,which may ensure the storage in security;(iii)the overall geothermal conditions are favorable for such geological storage;(iv)both Cretaceous strata and saline aquifers in eastern and central basin are the best suitable storage places;and(v)some reservoirs of the Cretaceous Qingshuihe Formation and the Jurassic Sangonghe and Badaowan formations and their overlying strata,are conducted as the most perfect reservior-caprock assemblage for this storage.It is concluded that many eligible circumstances,such as buried depth of three reservoir-caprock assemblages and relevant lithology,reservoir thickness,caprock closure,make the CO_(2)geological storage in the long-term development in Junggar Basin possible.

关 键 词：准噶尔盆地 深部咸水层 CO_(2)地质封存条件 封存潜力 

分 类 号：X701[环境科学与工程—环境工程] P642.5[天文地球—工程地质学]