1
Keith Nelson, Franz Aguirre: Passive centralizer. Schlumberger Technology Corporation, Michael L Flynn, David Hofman, Jody Lynn DeStefani, August 17, 2010: US07775272 (10 worldwide citation)

A passive centralizer for stably centering within a well. The centralizer may be of a retracted profile for advancement within the well and deployable for centralization upon reaching an operation site. Deployment may be achieved in an automated manner without the requirement of operator interaction ...


2
Pierre Yves Corre, Stephane Metayer: Single packer system for collecting fluid in a wellbore. Schlumberger Technology Corporation, Michael L Flynn, David Hofman, Jody Lynn DeStefani, January 25, 2011: US07874356 (7 worldwide citation)

A technique involves collecting formation fluids through a single packer having a plurality of sample collectors disposed along an expandable packer element. An anti-expansion device also is deployed along the expandable packer element to limit expansion in localized regions. Limiting the expansion ...


3
Joseph Varkey: Methods of manufacturing electrical cables. Schlumberger Technology Corporation, Michael L Flynn, David Hofman, Jody Lynn DeStefani, September 14, 2010: US07793409 (5 worldwide citation)

A method forming at least a portion of a cable comprises providing at least one cable conductor core, extruding at least an inner layer of a polymeric insulation material over the at least one conductor core, providing a plurality of strength members having a coating of the polymeric insulation mate ...


4
Alex Olson, Nalin Weerasinghe, Milos Milosevic, Kun Wang, Motohiro Nakanouchi, Kenji Endo, Yuichi Kobayashi, Hiromasa Nishisaka: Failure point diagnostics in cable telemetry. Schlumberger technology Corporation, Daryl R Wright, Jody Lynn DeStefani, January 3, 2017: US09535185

Methods and systems for failure point diagnostics in cable telemetry at a wellsite. The methods involve providing a system includes a cable operatively coupling between a surface modem and a downhole modem that is operatively coupled to a downhole toolstring of one or more downhole tools via a toolb ...


5
Masahiro Kamata: Seismic source, system, and method. Schlumberger Technology Corporation, Jody Lynn DeStefani, Daryl R Wright, November 29, 2016: US09507039

A seismic source of the present disclosure includes a first rotation member and a second rotation member having a common axis of rotation and rotated at a same rotational rate in mutually opposite directions. In addition, the seismic source may include a first mass that is eccentrically coupled to t ...


6
Nicholas N Bennett, Richard T Coates, Jakob Brandt Utne Haldorsen, Douglas E Miller: Methods and apparatus for determining slowness of wavefronts. Schlumberger Technology Corporation, Daryl R Wright, Jody Lynn DeStefani, December 27, 2016: US09529109

Methods and apparatus for determining slowness of wavefronts. An example apparatus includes one or more sources spaced from a receiver. The one or more sources are to transmit one or more signals and the receiver is to receive at least a portion of the one or more signals. The apparatus includes a p ...


7
Akira Kamiya, Stephane Vannuffelen, Kamal Kader, Hua Chen, Hisatoshi Matsumoto: Optical window assemblies. Schlumberger Technology Corporation, Daryl R Wright, Jody Lynn DeStefani, January 3, 2017: US09534494

Optical window assemblies are provided. An example apparatus includes a first fixture defining a fluid flow passageway. The example apparatus also includes a second fixture defining an aperture. The second fixture is coupled to the first fixture. A first optical window is disposed in the aperture. T ...


8
Bikash K Sinha: Multi-frequency inversion of modal dispersions for estimating formation anisotropy constants. Schlumberger Technology Corporation, Jody Lynn DeStefani, Daryl R Wright, August 16, 2016: US09417352

Systems and methods for the estimating a plurality of anisotropic elastic constants (Cij) using borehole dispersions and refracted compressional headwave velocity at a single logging depth in a vertical, deviated, or horizontal wellbore in a transversely-isotropic with a vertical axis of symmetry (“ ...