中国南海北部枯竭气田CO_(2)封存潜力展望:以崖城13-1气田和东方1-1气田为例  

A review of CO_(2) storage potential of depleted gas reservoirs in Northern South China Sea:taking YC13-1 and DF1-1 gas fields as example

作　　者：黄前峰 丁蓉 李清平 HUANG Qianfeng;DING Rong;LI Qingping(CNOOC Research Institute Ltd.,Beijing 100028,China;PetroChina Coalbed Methane Co.,Ltd.,Beijing 100028,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028 [2]中石油煤层气有限责任公司,北京100028

出　　处：《中国矿业》2023年第10期62-70,共9页China Mining Magazine

基　　金：国家自然科学基金项目“南海泥质粉砂天然气水合物储层特征及气-液-固多相传热传质机制”资助(编号:U19B2005);中海油集团公司“十四五”重大攻关工程项目子课题“海洋CO_(2)水合物固化技术研究”资助(编号:KJGG-2022-12-CCUS-0302);天然气水合物国家重点实验室2023年自主前瞻基础研究课题资助(编号:2023-SHW-ZZQZ)。

摘　　要：碳捕集与封存(Carbon Capture and Storage,CCS)技术作为缓解全球气候变暖、减少CO_(2)排放的有效路径之一,其潜力评估至关重要。目前CCS技术主要包括枯竭油气藏封存技术、CO_(2)强化石油(天然气)开采封存技术、CO_(2)驱替煤层气封存技术以及咸水层CO_(2)封存技术。枯竭的油气藏具有良好的圈闭构造,地质条件十分适合CO_(2)封存。南海北部油气勘探开发历经半个世纪,已建成荔湾气区、东方气区、乐东气区、崖城气区和陵水中央峡谷带气区等五大气区,“南海万亿方大气区”建设稳步推进。同时,部分气田的开发生产进入了末期(枯竭期),且该类气田CO_(2)含量较高,在对该类气田地质特征描述的基础上,依据已知的天然气产出量,对其CO_(2)的有效封存量进行了计算。根据初步的定量计算结果,优选的崖城13-1气田和东方1-1气田的CO_(2)有效封存量分别为1.2×10^(8) t和2.3×10^(8) t,显示了十分可观的CO_(2)封存潜力,研究结果为海上碳封存目标优选提供技术支持。Carbon Capture and Storage(CCS) technology is one of the effective ways to offset global warming and reduce CO_(2) emissions,and its potential assessment is crucial.The CCS technology mainly includes four types:CO_(2) storage in depleted oil and gas reservoirs,CO_(2) enhanced oil/gas recovery,CO_(2) enhanced coal bed methane and CO_(2) storage in saline aquifer.The CO_(2) storage in depleted oil and gas reservoirs,in which depleted oil and gas reservoirs have good trap structures and geological conditions are very suitable for CO_(2) storage.Oil and gas exploration in North South China Sea has been developed for half a century,and there are five gas zones have been built,including Liwan Gas fields,Dongfang Gas fields,Ledong Gas fields,Yacheng Gas fields and Lingshui Gas fields.The construction of the“trillions square meter gas zone in the South China Sea” is steadily advancing.At the same time,the production of some gas fields have entered the final stage(depletion period),and the CO_(2) content of these gas fields is high.Based on the geological characteristics of these gas fields,according to the known natural gas production,the effective storage capacity of CO_(2) is calculated.The results show that the CO_(2) effective storage capacity of YC13-1 and DF1-1 gas fields is 1.2×10^(8) t and 2.3×10^(8) t,demonstrating considerable CO_(2) storage potential.The research results can provide technical support for the selection of offshore carbon storage targets.

关 键 词：南海北部 枯竭气田 碳捕集与封存 有效封存量 

分 类 号：TD83[矿业工程—煤矿开采] TE357[矿业工程—矿山开采]