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filingDate 2007-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date>
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publicationDate 2008-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber US-2008257554-A1
titleOfInvention Foamed fluid additive for underbalance drilling
abstract A method of drilling or gas-lifting is disclosed where the methods including the use of a foaming agent and a gas, where the foaming agent is a keratin and the hydrostatic pressure of the fluid in the well is for a portion of the drilling or gas-lift operation less than an hyrdrostatic pressure of the formation being drilled or under production.
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