Anthropogenic climate changes
; Encounter probability
; Fault density
; Geologic carbon storages
; Global climate changes
; Site-specific
; Stationary sources
; Storage volumes
; Climate change
; Digital storage
; Probability
; Site selection
; Water injection
; Carbon dioxide
; carbon dioxide
; climate change
; emission
; estimation method
; fault propagation
; leakage
; plume
; pore space
; power generation
; probability
; statistical analysis
; California
; San Joaquin Basin
; United States
Scopus学科分类:
Energy
; Earth and Planetary Sciences
英文摘要:
Emission of carbon dioxide (CO2) from fossil-fueled power generation stations contributes to global climate change. Capture of CO 2 from such stationary sources and storage within the pores of geologic strata (geologic carbon storage) is one approach to mitigating anthropogenic climate change. The large storage volume needed for this approach to be effective requires injection into pore space saturated with saline water in reservoir strata overlain by cap rocks. One of the main concerns regarding storage in such rocks is leakage via faults. Such leakage requires, first, that the CO2 plume encounter a fault and, second, that the properties of the fault allow CO2 to flow upward. Considering only the first step of encounter, fault population statistics suggest an approach to calculate the probability of a plume encountering a fault, particularly in the early site-selection stage when site-specific characterization data may be lacking. The resulting fault encounter probability approach is applied to a case study in the southern part of the San Joaquin Basin, California. The CO2 plume from a previously planned injection was calculated to have a 4.1% chance of encountering a fully seal offsetting fault and a 9% chance of encountering a fault with a throw half the seal thickness. Subsequently available information indicated the presence of a half-seal offsetting fault at a location 2.8 km (1.7 mi) northeast of the injection site. The encounter probability for a plume large enough to encounter a fault with this throw at this distance from the injection site is 25%, providing a single before and after test of the encounter probability estimation method. Copyright copy; 2013. The American Association of Petroleum Geologists. All rights reserved.
Jordan P.D.,Oldenburg C.M.,Nicot J.-P.. Measuring and modeling fault density for CO2 storage plume-fauk encounter probability estirnation[J]. AAPG Bulletin,2013-01-01,97(4)