“Oil above Water”

Gas-oil Ratio and Water-oil Ratio

An indicator of bypassing is a premature drop in gas-oil ratio; i.e., earlier than expected collapse of gas saturation. Early gas collapse (water fillup) may indicate that channeling has occurred. In layered reservoirs with no or little vertical crossflow, water injection in an initially depressurized layer will cause GOR to drop rapidly. Often naturally fractured reservoirs exhibit fast gas co...

The Uranyl Nitrate - Water System Above 60 °

Oil and Water

Guest Editorial Disasters and their environmental and health consequences know no bounds. Although no geographic area or population is exempt from natural or manmade disas­ ters, Louisiana and its neighboring coastal states on the Gulf of Mexico have had more than their fair share over the past 5 years. The latest environmental disaster is the BP Deepwater Horizon oil spill, which began on 20 A...

Block Copolymer/Water/Oil Mesophases

In the presence of selective solvents, amphiphilic block copolymers self-assemble and form different mesomorphic structures, known as mesophases, such as micellar cubic, lamellar, normal/reverse hexagonal, and bicontinuous cubic. Mesophases have been utilized in pharmaceutical and biomedical applications and as template for synthesis of mesoporous material for separation and adsorption processe...

Separation of oil and water in oil spill recovery operations *

The separation of water from oil that is collected in any oil spill recovery operation is a continuing and necessary requirement during every stage of the effort. Its importance is reflected in the cost of transport and storage of large volumes of oily water, the salvage value of separated oil and the added labor costs associated with long-term recovery operations. This paper addresses the effe...