Wettability and Prediction of Oil Recovery from Reservoirs Developed with Modern Drilling and Completion Fluids. Semiannual Report.

Technical Information Center Oak Ridge Tennessee

关键词: Oil recovery;    Enhanced recovery;    Petroleum deposits;    Predictions;    Wettability;   

RP-ID  :  DE2005835631

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Contamination of crude oils by surface-active agents from drilling fluids or other oil-field chemicals is more difficult to detect and quantify than bulk contamination with, for example, base fluids from oil-based muds. Bulk contamination can be detected by gas chromatography or other common analytical techniques, but surface-active contaminants can be influential at much lower concentrations that are more difficult to detect analytically, especially in the context of a mixture as complex as a crude oil. In this report we present a baseline study of interfacial tensions of 39 well-characterized crude oil samples with aqueous phases that vary in pH and ionic composition. This extensive study will provide the basis for assessing the effects of surface-active contaminant on interfacial tension and other surface properties of crude oil/brine/rock ensembles.