Patent ID: 7757551
Filing Date: 2010-07-20
Classification: E21B

Abstract:
1. An apparatus for collecting a fluid from a subterranean formation, the apparatus comprising: a carrier conveyable into a borehole traversing the subterranean formation; an elongated probe coupled to the carrier that engages a borehole wall to form a seal therewith, the elongated probe having an inner wall defining a cavity within the elongated probe; a sleeve member extending axially through the cavity, the sleeve member having a fluid flow path within the sleeve member, the flow path being in fluid communication with the cavity; and at least one fluid moving device associated with the sleeve member and the cavity that urges fluid from the formation into the elongated probe, wherein the at least one fluid moving device operates on fluid entering the probe to control a first flow rate in the cavity and a second flow rate in the sleeve member flow path wherein the at least one fluid moving device comprises a first pump associated with the cavity and a second pump associated with the sleeve member flow path.