Reactive Multiphase Behavior of CO2 in Saline Aquifers Beneath the Colorado Plateau

Allis, R. G. ; Moore, J. ; White, S.

University of Utah

关键词: Sedimentary Rocks;    Colorado Plateau;    Travertine;    Age Estimation;    Soils;   

DOI  :  10.2172/830701
RP-ID  :  NONE
RP-ID  :  FC26-00NT40926
RP-ID  :  830701

美国|英语

来源: UNT Digital Library

【 摘 要 】

Field and laboratory investigations of naturally occurring CO{sub 2}-reservoirs are being conducted to determine the characteristics of potential seal and reservoir units and the extent of the interactions that occur between the host rocks and the CO{sub 2} charged fluids. Efforts have focused on the Farnham Dome field, located in central Utah, and the Springerville-St. Johns field in Arizona and New Mexico. The Springerville-St. Johns field is particularly significant because of the presence of extensive travertine deposits that document release of CO{sub 2} to the atmosphere. CO{sub 2} accumulations at both fields occur in sedimentary rocks typical of CO{sub 2} reservoirs occurring on the Colorado Plateau. The main achievements during this quarter were: (1) a soil gas flux survey at the Springerville-St Johns field, (2) collection of some soil gas for chemical and isotopic analysis from this field, and (3) collection of travertine samples from an elevation range of over 1000 feet (330 m) for dating the time span of carbonate-saturated spring outflow at this field. Analytical results and interpretations are still in progress. When available they will allow contrast with soil gas measurements from Farnham Dome natural CO{sub 2} field in central Utah, which were reported in the previous quarterly report.