Production data of recovered oil by tertiary recovery mechanism (GAGD) under free fall gravity drainage and controlled gravity drainage conditions demonstrated that FFGD mechanism has achieved better performance compared to CGD process (especially in the systems with more viscous oil).
However, gravity forces dominate water-wet tertiary floods while viscous fingering controls oil-wet tertiary floods.
The purpose of the experiments described in the paper was to investigate gas injection in fractured carbonate reservoirs in both secondary and tertiary cases (after water injection), focusing on gravity drainage using equilibrium gas followed by re-pressurization.
A basin axial-channel belt was largely responsible for the observed distribution of coarse-grained gravity-flow deposits in the Tertiary Puchkirchen and basal Hall formations of the Molasse foreland basin in Upper Austria.
The unconfined groundwater level in the subsurface Tertiary deposit (Mizunami Group) reflected rainfall, and the contribution to the gravity change was one-fifth as compared with the confined groundwater (Tanaka et al., 2006).
As value chain of primary, secondary and tertiary economic activities of agriculture evolves and matures, the point of gravity moves from community of farmers to secondary level processing factory.
Apart from that, development of an analytical or computational tertiary GAGD performance prediction model using a simple analytical model seems to be essential for fractured media during gravity drainage process.
Furthermore, its products will be used for gravity field retrieval, which can be considered a spin-off application of the Swarm mission, or a possible tertiary objective (Gerlach and Visser, 2006).
Bralower, T. J., Paull, C. K. & Leckie, R. M. The Cretaceous Tertiary boundary cocktail: Chicxulub impact triggers margin collapse and extensive sediment gravity flows.
(methyl tertiary butyl ether).
