Formulation and method of use for exploitation and transport of heavy and extra heavy oil wells
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United States of America Patent
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Jun 30, 2015
Grant Date -
Jan 9, 2014
app pub date -
Jul 5, 2013
filing date -
Dec 20, 2010
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Abstract
A combined injection, production and transportation method includes the steps of introducing a mixture of a surfactant, a co-surfactant and a carrier fluid into each of a production well and an injection well so that the mixture flows into porous media surrounding the production well and the injection well, and holding the reservoir mixture in the porous media surrounding the production well in the presence of water for a period of time sufficient to form a water film on surfaces of the porous media surrounding the production well. An injection fluid is then injected into the injection well while producing from the production well, whereby hydrocarbons flow from the porous media around the injection well toward the production well. An injection mixture of a surfactant and a carrier fluid is injected downhole into a desired point in tubing of the production well so that the tubing injection mixture mixes with the production stream forming an emulsion, and the emulsion flows through the tubing to the wellhead. The emulsion can be transported to intermediate locations and then broken and re-formulated for further transport.
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