当前位置: X-MOL 学术Gas Sci. Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
CO2 enhanced gas recovery and sequestration as CO2 hydrate in shallow gas fields in Alberta, Canada
Gas Science and Engineering Pub Date : 2022-05-29 , DOI: 10.1016/j.jngse.2022.104654
Kai Zhang , Hon Chung Lau , Zhangxin Chen

In this study, we carry out reservoir simulations to investigate the effect of CO2 hydrate formation on CO2 storage capacity in shallow gas fields. Results show that CO2 hydrate formation moderates the reservoir pressure due to volume shrinkage thus allowing more CO2 (122–212% pore volume) to be stored. The CO2 storage capacity in a gas field with CO2 hydrate formation is up to 3.2 times that without CO2 hydrate formation. Due to CO2 hydrate formation, the CO2 storage capacity in a gas field first increases when initial water saturation increases from 0.1 to 0.3 but then decreases when the initial water saturation increases from 0.3 to 0.5. However, the CO2 storage capacity decreases with an increase in initial water saturation if there is no CO2 hydrate forms. Results of screening show that out of 68,327 gas fields in Alberta, 517 gas fields can be used to store CO2 as CO2 hydrate, giving a total CO2 storage capacity of 536 Mt. Of this, depleted gas fields in Alberta have the highest CO2 storage capacity including the Chard and Saleski gas fields with storage capacity of 138 Mt and 94 Mt, respectively.



中文翻译:

加拿大艾伯塔省浅层气田 CO2 以 CO2 水合物的形式增强天然气采收率和封存

在本研究中,我们进行了储层模拟,以研究 CO 2水合物形成对浅层气田CO 2储存能力的影响。结果表明,由于体积收缩,CO 2水合物的形成缓和了储层压力,从而允许储存更多的 CO 2(122-212%孔隙体积)。形成CO 2水合物的气田的CO 2储存能力是不形成CO 2水合物的气田的3.2倍。由于 CO 2水合物的形成,CO 2当初始含水饱和度从 0.1 增加到 0.3 时,气田的储量首先增加,然后在初始含水饱和度从 0.3 增加到 0.5 时减小。然而,如果没有CO 2水合物形式,CO 2储存容量会随着初始含水饱和度的增加而降低。筛选结果表明,在阿尔伯塔省的 68,327 个气田中,有 517 个气田可作为 CO 2水合物储存 CO 2,​​总 CO 2储存容量为 536 Mt。其中,阿尔伯塔省的枯竭气田最高CO 2封存能力包括 Chard 和 Saleski 气田,封存能力分别为 138 Mt 和 94 Mt。

更新日期:2022-05-29
down
wechat
bug