Schlumberger Technology Corporation

Laurent P Prouvost

Jean-Louis Pessin

Erik Rhein-Knudsen

Claude J Vercaemer

Arthur W Milne

Tsutomu Yamate

Robert J Schroeder

Francois M Auzerais

Stephane Vannuffelen

Andrew L Kurkjian

Toru Terabayashi

Ahmed Hammami

John A Kerr

Jeffrey A Tarvin

John Ratulowski

Pierre Mouget

Frederique Kalb

Terry Sopkow

Christine Aussibal

Carolina Dautriche

The present invention contemplates implementation of transitory downhole video imaging and/or spectral imaging for the characterization of formation fluid samples in situ, as well as during flow through production tubing, including subsea flow lines, for permanent and/or long term installations. The present invention contemplates various methods and apparatus that facilitate one-time or ongoing downhole fluid characterization by video analysis in real time. The methods and systems may be particularly well suited to permanent and periodic intervention-based operations.

Spectral imaging for downhole fluid characterization

An apparatus for measuring an internal dimension of a well-bore comprising a tool adapted to be positioned inside the well bore. The tool comprises an optical caliper comprising an optical sensor providing a response correlated to the internal dimension of the well bore, the optical sensor being coupled to an optical fiber.

Apparatus for measuring an internal dimension of a well bore

In one embodiment, the invention relates to a method or process, useful in cementing a well, especially a hydrocarbon well, which is characterized by the use of increased external and internal diameter liners, the method being characterized by provision and use of a novel liner and liner-tool assembly. Novel liner apparatus, a liner-tool assembly, and a fluid circulating tool are also disclosed.

Method and apparatus for cementing a well

Growing community of inventors

Bures sur Yvette, France

Laurent P Prouvost