Chesterian Sandstones have been the focus of considerable research during the conduct of CO2 Sequestration site candidate evaluations. These sandstones are widespread and account for approximately 66 percent of the petroleum production in the Illinois Basin. Detailed reservoir characterization of select reservoirs and fields shows compartmentalization plays a significant role in development and recovery programs. Although Chesterian sandstones are a mature play, research indicates that underdeveloped petroleum reserves can be identified through application of detailed reservoir models. These sandstones are also being considered as a potential CO2 sequestration target. The widespread character of the sandstones and the maturity of the oilfields are elements that show potential for tertiary oil recovery with a potential benefit for CO2 disposal. The most widespread Chesterian Sandstone, the Cypress Sandstone, possesses reservoir architecture at many fields that is characterized by multiple, less than 10 foot thick, vertically stacked or shingled, sandstones that range in overall thickness from less than 10 feet to 40 feet and form as linear ridges. Compartmentalization is very common. The linear sandstone ridges are oriented northeast-southwest; analogous to modern-day tidal shoals. Successful field development and implementation of secondary and tertiary recovery programs in these compartmentalized reservoirs requires detailed reservoir characterization.
|Original language||English (US)|
|Title of host publication||Abstracts - AAPG, Eastern Section Meeting|
|Publisher||American Association of Petroleum Geologists|
|State||Published - 2009|