000			01868nab a2200229 4500
005			20260520004413.0
008			260224s2012 xxu ing
041			_aInglés
245	0	0	_aEffect of Live Crude on Alkaline/Surfactant Polymer Formulations _bImplications for Final Formulation Design
260			_a _b _cjun. 2012
270			_a12/12/2012 ; 12/12/2012
300			_a9 p. ; 352-361
520			_aTranscripción del resumen del autor Phase-behavior experiments have identified several surfactant systems that develop high solubilization ratios and low interfacial tension (IFT) with a specific dead paraffinic crude oil at specific salinities. The purpose of this work is to test these surfactant systems with reconstituted live crude. Emulsion-screening tests were performed in sight cells where an equilibrium amount of solution gas is dissolved in the crude at reservoir pressure (1,100 psi). The results indicate that the surfactant is relatively more soluble in the oil phase under these conditions. Thus, a formulated chemical slug for field conditions should contain either less salinity or a more hydrophilic surfactant system than that used in formulations with dead crude. Phase-behavior measurements estimate this offset to be approximately 0.25% less NaCl for the particular live crude in this study. The relevance of this offset is shown by comparing the results of dead-crude corefloods with a live-crude coreflood. A control experiment pressurizing oil with nitrogen at the same condition, 1,100 psi, did not show enhanced relative surfactant solubility in the oil phase.
581			_a2
773	0		_tSPE Journal _g17
942			_cARTICULO
100	1		_aSouthwick, Jeffrey G. _952872
100	1		_aSvec, Yi _952873
100	1		_aChilek, Greg _952874
100	1		_aShahin, Gordon T. _952875
999			_c187498 _d187498