DOI: 10.1002/2015GL063582
论文题名: Wormhole formation and compact dissolution in single- and two-phase CO2-brine injections
作者: Ott H. ; Oedai S.
刊名: Geophysical Research Letters
ISSN: 0094-8793
EISSN: 1944-8524
出版年: 2015
卷: 42, 期: 7 起始页码: 2270
结束页码: 2276
语种: 英语
英文关键词: carbonates
; CO2
; dissolution regimes
; reactive transport
; two-phase flow
; wormholing
Scopus关键词: Carbon dioxide
; Carbonates
; Computerized tomography
; Digital storage
; Dissolution
; Flow control
; Flow of fluids
; Water injection
; Acidic fluids
; Brine injection
; Dynamic data
; Dynamic process
; Geologic formations
; Reactive transport
; Single-phase flow
; Wormholing
; Two phase flow
; acidity
; brine
; carbon dioxide
; dissolution
; fluid flow
; fluid injection
; reactive transport
; reservoir
英文摘要: Injection of acids and CO2 into geologic formations leads to dissolution of soluble minerals comprising reservoirs rocks. This increases the uncertainty in predicting the security and injectivity of geologic CO2 storage. Here through time-lapse computed tomography of injection experiments, we present the first dynamic data on wormhole formation and the fluid flow therein. We show that the dissolution during single-phase flow produces wormholes, as found previously, but that two-phase flow during CO2-brine injection leads to compact dissolution. The latter is explained by CO2 preferentially occupying wormhole seeds, which prevents their growth as CO2 is less reactive than acidic brine. On the other hand, the wormhole seeds continue to grow under single-phase flows with only acidic fluid. The results also suggest that initial Péclet and Damköhler numbers for the single-phase flow process would fail to describe the dynamic process of whether compact or wormhole dissolution would ensue. ©2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928695431&doi=10.1002%2f2015GL063582&partnerID=40&md5=874d969c9cc2d9f83d5c6908b3b22e98
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8409
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Shell Global Solutions International B. V., Kesslerpark 1, Rijswijk, Netherlands
Recommended Citation:
Ott H.,Oedai S.. Wormhole formation and compact dissolution in single- and two-phase CO2-brine injections[J]. Geophysical Research Letters,2015-01-01,42(7).