ELECTRICAL WELL LOGGING FLUID AND METHOD OF USING SAME

摘要

A well logging fluid is provided having a relatively non-conductive fluid and an effective amount of an electrically conductive fiber sufficient to modify the electrical c haracteristics the relatively non-conductive fluid resulting in a modified fluid or well logging fl uid such that an electrical well-logging tool when disposed in the modified fluid can perform an electrical well-logging survey of a containing the modified fluid. The non-conductive fluid is selected from the group consisting of a non-aqueous fluid and an invert emulsion of an aq ueous phase in a non-conductive liquid. In an invert emulsion the aqueous portion thereof range s up to about 70 percent by volume. Preferably, the modified fluid or well logging fluid has a n electrical stability of at most 350 volts, more preferably at most 250 volts, as measured a ccording to API RB 13-2. The well logging may be used for electric well logging and imaging.