Reservoir-cap combination optimization and potential evaluation of CO2 geological storage in saline aquifer, in Wenxinan sag of Beibu Gulf Basin

被引：0

作者：

Xiong P. ^{[1
]}

Fang X. ^{[1
]}

Le W. ^{[2
]}

Lu J. ^{[1
]}

Wang S. ^{[1
]}

Yang P. ^{[1
]}

Wang K. ^{[1
]}

Guo J. ^{[1
]}

机构：

[1] Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang

[2] School of Environmental, China University of Geosciences, Wuhan

来源：

Meitan Xuebao/Journal of the China Coal Society | 2024年 / 49卷 / 05期

关键词：

Beibu Gulf Basin; CO[!sub]2[!/sub] geological storage potential; offshore storage; reservoir-cap combination optimization; Weixinan sag;

D O I：

10.13225/j.cnki.jccs.2023.0616

中图分类号：

学科分类号：

摘要：

CO2 geological storage is a guaranteed technology for achieving carbon neutrality. The offshore deposit basin is far away from the human activity area, and the implementation of a CO2 geological storage is more advantageous than the land sedimentary basin. To find out the CO2 storage potential in the Weixinan sag of the Beibu Gulf Basin, based on the 8 indicators such as caprock burial depth, the maximum thickness of single layer mudstone, mud-soil ratio, fault density and reservoir porosity, formation thickness, sand-soil ratio, permeability, etc., it has established a reservoir evaluation system for the secondary structure unit of the basin. Combined with the core physical property data of lays and 3D geological models, the reservoir and caprock of the Weixinan sag are optimized, and the effective storage potential is evaluated with the US-DOE method. The results show that within 800−3 000 meters below the sea floor, in the Weixinan sag, there are two sets of reservoir-cap combinations suitable for CO2 storage. Combination 1: in Neogene, the neritic mudstone of the first member of the Jiaowei Formation is the cap rock, and the neritic sandstone of the second member of the Jiaowei Formation and the Xiayang Formation is the reservoir, and the effective storage capacity is 0.749 billion tons. Combination 2: in the Paleogene, the deep lake mudstone in the second member of the Weizhou Formation is the cap rock, and the sandstone in the third member of the Weizhou Formation is the reservoir, and the effective storage capacity is 0.374 billion tons. In the Weixinan sag, two sets of reservoir-cap assemblages suitable for CO2 storage in the saline aquifers are selected, with an effective storage capacity of 1.123 billion tons. According to the evaluation of the annual CO2 emission of 70 million tons in the west of Guangdong Province, it can meet the CO2 emission reduction needs of the region for more than 16 years. Offshore geological storage is a potential path for the green and sustainable development of coastal heavy chemical clustering areas and to achieve the goal of carbon neutrality. © 2024 China Coal Society. All rights reserved.

引用

页码：2405 / 2413

页数：8

共 37 条

[1] SANG Shuxun, YUAN Liang, LIU Shiqi, Et al., Geological technology for carbon neutrality and its application prospect for low carbon coal exploitation and utilization[J], Journal of China Coal Society, 47, 4, pp. 1430-1451, (2022)
[2] WANG Shuangming, SHEN Yanjun, SONG Shijie, Et al., Change of coal energy status and green and low-carbon development under the “dual carbon”goal[J], Journal of China Coal Society, 48, 7, pp. 2599-2612, (2023)
[3] BACHU S., Review of CO2 storage efficiency in deep saline aquifers[J], International Journal of Greenhouse Gas Control, 40, (2015)
[4] JIN C, LIU L, LI Y, Et al., Capacity assessment of CO2 storage in deep saline aquifers by mineral trapping and the implications for Songliao Basin, Northeast China[J], Energy Science & Engineering, 5, 2, (2017)
[5] LI Xiaochun, LIU Yanfeng, BAI Bing, Et al., Ranking and screening of CO2 saline aquifer storage zones in China[J], Chinese Journal of Rock Mechanics and Engineering, 25, 5, pp. 963-968, (2006)
[6] LI P, YI L, LIU X, Et al., Screening and simulation of offshore CO2-EOR and storage：A case study for the HZ21-1 oilfield in the Pearl River Mouth Basin, Northern South China Sea[J], International Journal of Greenhouse Gas Control, 86, (2019)
[7] ZHOU D, LI P, LIANG X, Et al., A long-term strategic plan of offshore CO2 transport and storage in northern South China Sea for a low-carbon development in Guangdong Province, China[J], International Journal of Greenhouse Gas Control, 70, pp. 76-87, (2018)
[8] GUO Jianqiang, WEN Dongguang, ZHANG Senqi, Et al., Potential evaluation and demonstration project of CO2 geological storage in China[J], Geological Survey of China, 2, 4, pp. 36-46, (2015)
[9] ZHANG C, ZHOU D, LI P, Et al., CO2 storage potential of the Qiongdongnan Basin, northwestern South China Sea[J], Greenhouse Gases：Science and Technology, 4, 6, (2014)
[10] LI P, ZHOU D, ZHANG C, Et al., Assessment of the effective CO2 storage capacity in the Beibuwan Basin, offshore of southwestern P. R. China[J], International Journal of Greenhouse Gas Control, 37, pp. 325-339, (2015)

← 1 2 3 4 →