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| Number | Title | Issue Date |
| 7525315 | Resistivity logging tool and method for building the resistivity logging tool A combined resistivity tool incorporating both induction/propagation antennas and lateral resistivity antennas disposed in recesses of downhole tubulars, in which a lateral resistivity antenna includes an insulating base layer disposed in the recess; a toroidal ante... | 04/28/2009 |
| 7365307 | Sigma/porosity tools with neutron monitors A tool for formation logging includes a support configured for movement in a borehole; a neutron source disposed on the support; a neutron monitor disposed on the support and configured to monitor an output of the neutron source; a gamma-ray detector disposed on the... | 04/29/2008 |
| 7360430 | High impedance thin film for strain gauge applications A resistive thin film (1) made of grains (3) of conductive material having an average size, in a dielectric medium (2) is characterized by the total thickness of the film (1) being between 3 and ten times the average size of the grains ( | 04/22/2008 |
| 7340384 | Process for determining the variation in the relative permeability of at least one fluid in a reservoir A method for determining for a reservoir (1) containing fluids (W, O), the variation in the relative permeability (krO, krW) of at least one of the fluids, as a function of the saturation of at least one of the fluids (W, O),) is provided. According to this m... | 03/04/2008 |