Geophysical Techniques for Monitoring CO2 Movement During Sequestration

Gasperikova, Erika ; Hoversten, G. Michael

California Energy Commission

关键词: Natural Gas Fields;    Hydrocarbons;    02 Petroleum;    Oil Fields;    Monitoring;   

DOI  :  10.2172/903471
RP-ID  :  None
RP-ID  :  FC26-03NT41984
RP-ID  :  903471

美国|英语

来源: UNT Digital Library

【 摘 要 】

The relative merits of the seismic, gravity, and electromagnetic (EM) geophysical techniques are examined as monitoring tools for geologic sequestration of carbon dioxide (CO{sub 2}). This work does not represent an exhaustive study, but rather demonstrates the capabilities of a number of geophysical techniques for two synthetic modeling scenarios. The first scenario represents combined CO{sub 2} enhanced oil recovery (EOR) and sequestration in a producing oil field, the Schrader Bluff field on the north slope of Alaska, USA. EOR/sequestration projects in general and Schrader Bluff in particular represent relatively thin injection intervals with multiple fluid components (oil, hydrocarbon gas, brine, and CO{sub 2}). This model represents the most difficult end member of a complex spectrum of possible sequestration scenarios. The time-lapse performance of seismic, gravity, and EM techniques are considered for the Schrader Bluff model. The second scenario is a gas field that in general resembles conditions of Rio Vista reservoir in the Sacramento Basin of California. Surface gravity, and seismic measurements are considered for this model.