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NOYA JOSE VIDAL: Optical coiled tubing log assembly. Schlumberger Canada, Fonseca Darla P, April 7, 2011: WO/2011/041390 (34 worldwide citation)

A fiber optic based logging assembly deliverable via coiled tubing. The downhole portion of the assembly is directed to develop a logging profile of a well by way of the fiber optic line. Thus, a downhole battery may be provided with the tool. Further, opto-electric interfaces may be provided with t ...


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WU PETER T: Real-time formation anisotropy and dip evaluation using tri-axial induction measurements. Schlumberger Canada, Fonseca Darla P, July 28, 2011: WO/2011/091216 (14 worldwide citation)

The present disclosure relates to a method to determine a formation property of a subsurface formation. A downhole logging tool having two or more tri-axial antennas is provided and used to obtain azimuthally sensitive data. Borehole correction is performed on the obtained data and a ZD-inversion is ...


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AGUIRRE FRANZ: Downhole tool with roller screw assembly. SCHLUMBERGER CANADA, Fonseca Darla P, January 13, 2011: WO/2011/005519 (8 worldwide citation)

A downhole tool for positioning in a wellbore comprises a tool main body, an electric motor disposed within the tool main body, the motor comprising a rotor rotatably attached to a stator, and a linear actuator assembly disposed within the motor for transforming a rotary output of the motor into a l ...


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STEPHENSON KENNETH E: Optimization of neutron-gamma tools for inelastic gamma-ray logging. Schlumberger Canada, Fonseca Darla P, November 25, 2010: WO/2010/135618 (7 worldwide citation)

Systems, methods, and devices for inelastic gamma-ray logging are provided. In one embodiment, such a method includes emitting neutrons into a subterranean formation from a downhole tool to produce inelastic gamma-rays, detecting a portion of the inelastic gamma-rays that scatter back to the downhol ...


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SEYDOUX JEAN: Methods for characterization of formations, navigating drill paths, and placing wells in earth boreholes. Schlumberger Canada, Fonseca Darla P, April 28, 2011: WO/2011/049828 (6 worldwide citation)

A method for directing borehole drilling in a target earth formation includes the following steps: providing drilling equipment having a bottom hole assembly that includes a controllable directional drilling subsystem, and a logging-while- drilling directional measurement tool with a look-around and ...


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Clark Brian: Multiple magnetic sensor ranging method and system. Schlumberger Canada, Schlumberger Technology, Prad Research And Development, Services Petroliers Schlumberger, Schlumberger Holding, Clark Brian, Fonseca Darla P, December 17, 2009: WO/2009/151867 (6 worldwide citation)

A system and methods for drilling a well in an orientation with respect to an existing well are provided. Specifically, one method in accordance with present embodiments includes producing a magnetic field with a magnetic field source positioned in the first well, producing a first output from a fir ...


7
Taherian Reza, Tabanou Jacques R, Legendre Emmanuel, Meehan Richard J, Krepp Anthony N, Montgomery Michael A, Seydoux Jean: "System and method for using a resistivity tool with wired drill pipe and one or more wells". Schlumberger Canada, Schlumberger Technology, Prad Research And Development, Services Petroliers Schlumberger, Schlumberger Holdings, Taherian Reza, Tabanou Jacques R, Legendre Emmanuel, Meehan Richard J, Krepp Anthony N, Montgomery Michael A, Seydoux Jean, Fonseca Darla P, January 14, 2010: WO/2010/006302 (5 worldwide citation)

A resistivity tool is used with wired drill pipe and one or more wells. The resistivity tool has a transmitter, receiver modules located adjacent to the drill bit, and high sensitivity receiver modules located at greater distances from the drill bit relative to the receiver modules. The receiver mod ...


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TOMPKINS MICHAEL J: Uncertainty estimation for large-scale nonlinear inverse problems using geometric sampling and covariance-free model compression. Schlumberger Canada, Fonseca Darla P, September 22, 2011: WO/2011/115921 (4 worldwide citation)

A method for uncertainty estimation for nonlinear inverse problems includes obtaining an inverse model of spatial distribution of a physical property of subsurface formations. A set of possible models of spatial distribution is obtained based on the measurements. A set of model parameters is obtaine ...


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Mullins Oliver C, Pop Julian J, Dubost Francois X, Betancourt Soraya S: Methods and apparatus to form a well. Schlumberger Canada, Schlumberger Holdings, Schlumberger Technology, Services Petroliers Schlumberger, Prad Research And Development, Mullins Oliver C, Pop Julian J, Dubost Francois X, Betancourt Soraya S, Fonseca Darla P, November 26, 2009: WO/2009/142840 (4 worldwide citation)

Methods and apparatus to form a well are disclosed. An example method involves determining a reservoir fluid map associated with at least a portion of a reservoir. The first fluid map has first fluid composition data associated therewith. The example method also involves measuring a formation fluid ...