The objective of the proposed work is to develop a methodology and equipment to enable researchers to produce large quantities of realistic water-in-oil emulsions. These emulsions will be used in test programs at Ohmsett and elsewhere.
This project will distill research results collected during the past 6 years of decanting experiments (including the use of chemical demulsifiers to enhance water separation) into proposed guidelines for operational use and to transfer technology to responders and regulators. These proposed guidelines will include a review of regulatory issues and procedures for minimizing environmental impacts.
Tasks of this project are;
This project will extend the work to complete property analyses on IFO-180 and IFO-380 fuel oils used in the June 2003 UK field trials and in the Ohmsett dispersant effectiveness experiments completed in the fall of 2003.
Tasks to be completed:
Conduct detailed oil property analyses on IFO-180 and IFO-380 fuel oils;
Write a technical report, scientific paper and powerpoint presentation that incorporate results from all analyses (SL Ross and COOGER laboratory maintained by the Canadian Department of Fisheries and Oceans) on the results of this research project.
This project produced a model to predict a discharge from a pipeline. It also included a pocket guide to quickly make an estimate of a worst case discharge from a pipeline. The model is known as the Minerals Management Service Pipeline Oil Spill Volume Estimation Model (POSVEM). POSVEM is a computer-based methodology to estimate discharges from seafloor pipelines. The system is composed of a Release Module and a Near Field Module, linked together with necessary databases through a Graphical User Interface (GUI).
This project will evaluate the tendency of oils to emulsify at sea into unstable, meso-stable, or stable emulsions. Until now there were only laboratory scale tests of emulsification and some analysis of emulsions collected at sea during clean up operations. The proposed work will extend the laboratory work into the Ohmsett tank and evaluate the factors that affect emulsification, such as oil slick thickness and wave energy in a controlled, reproducible environment like Ohmsett.
These are laboratory studies of the break up of oil, gas, and gas/oil mixtures discharging into a pressurized water environment. The interaction between gas bubbles and oil droplets under dynamic conditions simulating buoyant rise of this mixture were calculated. These experiments will be conducted in a high pressure test vessel located at the University of Hawaii. The experimental design simulated the release of hydrocarbon gases and fluids from a well blowout or pipeline rupture in deep water. The atmospheric pressure experiments were performed at MIT.
This is an assessment of existing or developing technologies that could be used to sense, track, contain and recover oil released by deep water blowouts or pipeline ruptures. The assessment will include literature reviews, consultation with experts in well control and a review of U.S. and international patents for developing technologies in this field.
The Objective of this study is to conduct full-scale tests of recovered oil/emulsion/water separation rates at OHMSETT in order to predict the optimum time for decanting separated water in temporary storage devices.
To analyze the behavior of oil spilled during a deep water blowout. The study will focus on three questions: What properties and behavior are expected of the oil on the surface, such as slick thickness, area, and dispersibility?;
what cleanup measures, if any, are available and appropriate to deal with the spill?; and
are there any major differences in oil spill behavior and countermeasures between a blowout.
The Minerals Management Service joined in a cooperative effort with Environment Canada to develop a field kit to measure oil properties. Spill responders must understand the properties of the petroleum before determining safe and efficient countermeasures for spills. Many countermeasures are precluded when oil becomes highly viscous and dense through weathering. Development of the kit focused on five tests; density, viscosity, water content, flash point and dispersant effectiveness.
