METHOD AND APPARATUS FOR SAMPLING FORMATION FLUIDS

摘要

A method of retrieving a formation fluid from a formation adjacent a borehole wall includes estimating at least one of a permeability of the formation and a viscosity of the formation fluid. A first tool is selected based on the estimation, the first tool being selected from one of a heating and sampling tool, an injection an d sampling tool, and a coring tool. An attempt to retrieve a formation fluid sample fro m the formation is then made with the first tool, and a formation fluid sample is retrieved from the formation. A second retrieval process may then be initiated, in which th e second retrieval process includes increasing the mobility of the formation fluid.