| 摘要 |
A technique for contamination monitoring when evaluating a fluid from a subterranean formation drawn into a downhole tool positioned in a wellbore and penetrating the formation. The method involves drawing fluid from the formation into an evaluation flowline (302), drawing fluid from the formation into a cleanup flowline (304), generating a combined flowline from the evaluation and cleanup flowlines (306), determining a virgin fluid break through property (Pmf) and a virgin fluid property (Pvf) for the combined flowline, measuring at least one fluid property of one of the evaluation fiowline, the cleanup flowline and/or the combined flowline and determining a contamination level for the at least one fluid property from the virgin fluid breakthrough property (Pmf), the virgin fluid property (Pvf) and the measured fluid property (Pd). |
