COMPOSITIONS AND METHODS FOR DELIVERING AN ORGANIC SOLVENT TO A DOWNHOLE PORTION OF A WELLBORE OR PIPELINE
摘要
A composition is provided for delivering an organic solvent to a downhole portion of a wellbore or pipeline. The composition comprises: (A) water; (B) a weighting agent; (C) an organic solvent that is immiscible with water; and (D) a surfactant adapted for forming an oil- external emulsion of the organic solvent and the water, wherein the surfactant is unstable to hydrolysis. The composition is formed to be an oil-external emulsion. The density of the composition is formulated to be greater than that of pure water at standard temperature and pressure. A method is provided for delivering an organic solvent to a downhole portion of a wellbore. The method comprises the steps of: (A) forming a composition according to the invention; and (B) introducing the composition into the wellbore or pipeline.
申请公布号
WO2007125302(A2)
申请公布日期
2007.11.08
申请号
WO2007GB01491
申请日期
2007.04.24
申请人
HALLIBURTON ENERGY SERVICES, INC.;CURTIS, PHILIP, ANTHONY_@;CHERAMIE, GARY, J.;PAULS, RICHARD, W.