This paper describes the development of experimental methods to determine critical gas saturations and relative permeabilities relevant to the depressurisation of volatile oils. A series of reservoir condition coreflood experiments at pressures up to 415 bara and 123°C is described. The experiments were conducted with aged core and fluids and comprised of a waterflood followed by depressurisati...

X-ray microtomography was used to image, at a resolution of 6.6 µm, the pore-scale arrangement of residual carbon dioxide ganglia in the pore-space of a carbonate rock at pressures and temperatures representative of typical formations used for CO2 storage. Chemical equilibrium between the CO2, brine and rock phases was maintained using a high pressure high temperature reactor, replicating condi...

We present the results from a novel experimental apparatus that can image – at the micron scale – fluid displacements at elevated temperatures and pressures. The images are acquired using a micro-CT scanner (Xradia Versa 500) that has been adapted to allow core flood experiments to be conducted in situ, allowing continuous imaging at resolutions down to around 1 μm. A small cylindrical core – a...

The large-scale impoundment of rivers has led to global declines in freshwater mussel populations. It is important to understand the mechanisms underlying these declines to initiate an effective recovery strategy. We examined population traits of three Quadrula species (Quadrula pustulosa, Q. cylindrica and Q. quadrula) at three locations that were exposed to two different reservoir management ...

Blue Mesa Reservoir is the largest body of water in Colorado and is located on the western slope of the Rocky Mountains at an elevation of 7520 feet. Blue Mesa Reservoir contains recreationally important populations of l ake trout (Salvelinus namaycush), kokanee salmon (Oncorhynchus nerka), rainbow trout (Onocorhynchus mykiss), and brown trout (Salmo trutta). A management challenge in recent ye...

In response to the urgent need for estimates of the oil and gas flow rate from the Macondo well MC252-1 blowout, we assembled a small team and carried out oil and gas flow simulations using the TOUGH2 codes over two weeks in mid-2010. The conceptual model included the oil reservoir and the well with a top boundary condition located at the bottom of the blowout preventer. We developed a fluid pr...

This paper presents a comprehensive review of optimization algorithms utilized in reservoir simulation-optimization models, specifically focusing on determining optimal rule curves. The study explores critical conditions essential for the process, including inflow data, objective and smoothing functions, downstream water demand, initial characteristics, evaluation scenarios, stop criteria. By e...

Abstract The proportion of different lithofacies is essential to determine the net-gross ratio, which directly affects calculation oil and gas reserves. Under condition few wells, reliability proportions obtained using well data poor because it difficult estimate uncertainty variation range proportions. present study overcomes this problem an evaluation method for reservoir proportion. First, a...