DOI: 10.1306/04301312142
Scopus记录号: 2-s2.0-84893354424
论文题名: Controls on CO2 fate and behavior in the gullfaks oil field (Norway): How hydrogeochemical modeling can help decipher organic-inorganic interactions
作者: Van Berk W. ; Schulz H.-M. ; Fu Y.
刊名: AAPG Bulletin
ISSN: 0149-1624
EISSN: 1558-9354
出版年: 2013
发表日期: 2013
卷: 97, 期: 12 起始页码: 2233
结束页码: 2255
语种: 英语
Scopus关键词: Complete dissolution
; Degradation products
; Equilibrium conditions
; Equilibrium reactions
; Hydrogeochemical model
; Hydrogeochemical process
; Organic-inorganic interactions
; Thermodynamically stable
; Degradation
; Dissolution
; Feldspar
; Hydrochemistry
; Kaolinite
; Oil fields
; Partial pressure
; Petroleum reservoir engineering
; Quartz
; Sodium
; Carbon dioxide
; acetic acid
; carbon dioxide
; carbonate
; crude oil
; dawsonite
; formation water
; kaolinite
; oil field
; partial pressure
; plagioclase
; sodium
; supersaturation
; Atlantic Ocean
; Gullfaks Field
; North Sea
; Norway
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Oil degradation in the Gullfaks field led to hydrogeochemical processes that caused high CO2 partial pressure and a massive release of sodium into the formation water. Hydrogeochemical modeling of the inorganic equilibrium reactions of water-rockgas interactions allows us to quantitatively analyze the pathways and consequences of these complex interconnected reactions. This approach considers interactions among mineral assemblages (anorthite, albite, K-feldspar, quartz, kaolinite, goethite, calcite, dolomite, siderite, dawsonite, and nahcolite), various aqueous solutions, and a multicomponent fixed-pressure gas phase CO2 CH4, and H2) at4496-psi (31-mPa) reservoir pressure. The modeling concept is based on the anoxic degradation of crude oil (irreversible conversion of n-alkanes to CO2, CH4, H2, and acetic acid) at oil-water contacts. These water-soluble degradation products are the driving forces for inorganic reactions among mineral assemblages, components dissolved in the formation water, and a coexisting gas at equilibrium conditions. The modeling results quantitatively reproduce the proven alteration of mineral assemblages in the reservoir triggered by oil degradation, showing (1) nearly complete dissolution of plagioclase; (2) stability of K-feldspar; (3) massive precipitation of kaolinite and, to a lesser degree, of Ca-Mg-Fe carbonate; and (4) observed uncommonly high CO2 partial pressure (61 psi [0.42 mPa] at maximum). The evolving composition of coexisting formation water is strongly influenced by the uptake of carbonate carbon from oil degradation and sodium released from dissolving albitic plagioclase. This causes supersaturation with regard to thermodynamically stable dawsonite. The modeling results also indicate that nahcolite may form as a CO2sequestering sodium carbonate instead of dawsonite, likely controlling CO2 partial pressure. Copyright © 2013. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893354424&doi=10.1306%2f04301312142&partnerID=40&md5=21fdca2b7351f6a7f08ead8f17a924d8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13194
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Van Berk W.,Schulz H.-M.,Fu Y.. Controls on CO2 fate and behavior in the gullfaks oil field (Norway): How hydrogeochemical modeling can help decipher organic-inorganic interactions[J]. AAPG Bulletin,2013-01-01,97(12)