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Gold/Mining/Energy : Big Dog's Boom Boom Room

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From: Tommaso	1/12/2007 1:03:39 PM
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Some quotations and links having to do with the "fireflood" technology much discussed on the "oil sands" thread: Shell de Venezuela carried out fireflood tests in the Tia Juana field on the east coast of Lake Maracaibo in the 1960s. The main problem encountered was that sulphuric acid was produced as a by-product and it corroded all the metal tubing in the wells ... as a result the project was abandoned. energybulletin.net A. Fireflood is when you inject compressed air down the injection wells, normally with some thermal energy to form a burn-front in the reservoir. The heat and the products from this combustion between the oxygen and oil, drives the remaining heavy oil towards the production wells. Q. Can you do modeling for fireflood? A. Most thermal modeling tools can handle fireflood; you just need to incorporate the chemical reactions of the combustion into the model. But there are not that many fireflood projects in the world and, therefore, very little field data is available to verify fireflood predictions. heavyoilinfo.com Toe to Heel Air Injection (THAI) This is a very new and experimental method that combines a vertical air injection well with a horizontal production well. The process ignites oil in the reservoir and creates a vertical wall of fire moving from the "toe" of the horizontal well toward the "heel", which burns the heavier oil components and drives the lighter components into the production well, where it is pumped out. In addition, the heat from the fire upgrades some of the heavy bitumen into lighter oil right in the formation. Historically fireflood projects have not worked out well because of difficulty in controlling the flame front and a propensity to set the producing wells on fire. However, some oil companies feel the THAI method will be more controllable and practical, and have the advantage of not requiring energy to create steam. blinkbits.com

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