RESERVOIR SAMPLING TOOLS AND METHODS

摘要

Techniques for sampling a subsurface reservoir include lowering a downhole logging tool comprising one or more samplers, a cleaner system, and a sample probe bit into a borehole until at least one sampler is positioned correctly in a subterranean reservoir; advancing the cleaner system into the reservoir cleaning mud filtrate and contaminated reservoir material away into a mud column; advancing the sample probe bit into the reservoir; and solvent is injected into the reservoir from the solvent reservoir.