Schlumberger Technology Corporation

Honeywell International Inc.

Visuray Technology Ltd.

Schlumberger Canada Limited

Prad Research and Development Nv

Services Petroliers Schlumberger

Schlumberger Holdings Limited

Reinhart Ciglenec

Steven G Villareal

Jacques R Tabanou

Michael J Stucker

Albert Hoefel

Khanh Anh Duong

Jean-Marc Follini

Peter Swinburne

Tsutomu Yamate

Stephane Vannuffelen

Andrew L Kurkjian

Frank F Espinosa

Akira Kamiya

Abdurrahman Sezginer

Alexander F Zazovsky

Kentaro Indo

Terrence Dwight Bender

Keith A Moriarty

Christian Chouzenoux

Ricardo Vasques

Walter David Aldred

Thomas D MacDougall

Remi Hutin

Ian D Bryant

Colin Longfield

Alain P Dorel

Thomas George Stratton

Edgar Robert Mallison

Kenneth L Havlinek

Troy Fields

Joel J Bodin

Arthur D Liberman

Masaki Miyashita

Dimitrios K Pirovolou

Ådne Voll

Paal Kibsgaard

Lennox E Reid

Dominik Szlezak

Clive Eckersley

Ernesto Garcia

Ray Nold, Iii

Max Spencer

Peter Swinburner

Paul Kibsgaard

In one embodiment, a sampling while drilling tool includes a drill collar having a first end, a second end, an outer wall extending between the first and second ends, and at least one opening extending through the outer wall to a cavity within the drill collar. The sampling while drilling tool also includes a sample chamber positionable in the cavity through the opening in the outer wall and a passage for conducting a drilling fluid through the drill collar.

Formation evaluation while drilling

A downhole tool cooling device () is described, wherein a downhole tool () is thermally coupled to a rechargeable cold source () comprising a solid cold source body () being contained in an insulated cooling medium vessel (), and wherein the downhole tool () is thermally coupled to the cold source () by means of a cooling circuit () comprising a first heat exchanger () arranged at the downhole tool () and in a fluid communicating manner being interconnected with a second heat exchanger () arranged in the solid cold source body (), wherein a refrigeration system () is thermally coupled to the cold source () during a downhole operation of the cooling device (). Furthermore is described a method for cooling a downhole tool (). Also is described use of a pre-cooled solid cold source body () contained in an insulated cooling medium vessel () as a cold source () for a cooling circuit () being thermally coupled to a downhole tool () being in the need of cooling during downhole operations.

Downhole logging tool cooling device

A while-drilling tool comprising a motor, a transmission coupled to the motor, and a pump comprising a first piston disposed in a first chamber and a second piston disposed in a second chamber and coupled to the first piston. A planetary roller-screw is coupled between the pump and the transmission. A valve block is configured to fluidly communicate with the first and second pump chambers, a borehole in which the while-drilling tool is configured to be positioned, and a formation penetrated by the borehole.

Pump control for formation testing

A downhole formation fluid pumping and a sampling apparatus are disclosed that may form part of a formation evaluation while drilling tool or part of a tool pipe string. The operation of the pump is optimized based upon parameters generated from formation pressure test data as well as tool system data thereby ensuring optimum performance of the pump at higher speeds and with greater dependability. New pump designs for fluid sampling apparatuses for use in MWD systems are also disclosed.

A method of using jarring tool in a wellbore, where the jarring tool is electrically activated to apply an impact force transmitted to at least another tool in the well. The method may further comprise operating a hydraulic mechanism in response to electrical activation of the jarring tool to cause a first member of the jarring tool to be moved to collide with a second member of the jarring tool to apply the impact force. Also, the method may involve electrically activating the jarring tool by communicating at least one command over at least one electrical conductor to the jarring tool.

Electrically activating a jarring tool

An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device.

Formation testing via performing a first pumpout process to draw formation fluid at a wellbore position into the formation tester, discharging a treatment fluid from the formation tester into the formation at the same position, and drawing another formation fluid sample from the formation at the same position into the formation tester.

Formation fluid sampling

A measurement system is provided that includes an integrated optics unit which measures at least one variable of the movement of a conveyance system relative to an oil well during an oil well operation, wherein the at least one variable is a direction of motion, a speed of movement, or a length of movement of the conveyance system.

Integrated measurement based on an optical pattern-recognition

An apparatus comprising a fluid communication device configured to extend from a drill string and establish fluid communication with a subterranean formation penetrated by a wellbore in which the drill string is positioned, wherein the drill string comprises a passage configured to conduct drilling mud and an opening extending through an outer surface thereof and into a cavity. A sample chamber is coupled within the cavity and is in selectable fluid communication with the formation via the fluid communication device. A retainer is configured to absorb axial loading of the sample chamber within the cavity.

An apparatus and method for harvesting energy in a wellbore is disclosed. In one embodiment, a harvester tool positioned in a wellbore for capturing energy in the wellbore is disclosed. The harvester tool includes a rotor comprising a magnet. The magnet is disposed eccentric to a center of the harvester tool. In addition, the rotor is rotatable around the center of the harvester tool. The harvester tool also includes a stator. Rotation of the rotor induces a voltage in the stator.

Kinetic energy harvesting in a drill string

A method that uses downhole fluid analysis in order to selectively collect and retain formation fluid samples in a drilling environment, as well as, control drilling using downhole fluid analysis.

Downhole fluid analysis

Apparatus and methods to perform focused sampling of reservoir fluid are described. An example method couples a sampling probe to a subterranean formation and, while the sampling probe is coupled to the subterranean formation, varies a pumping ratio of at least two displacement units to reduce a contamination level of a formation flu id extracted via the sampling probe from the subterranean formation.

Apparatus and methods to perform focused sampling of reservoir fluid

A method and apparatus for drilling at least one wellbore from an offsite location is provided. Each wellbore is located at a wellsite having a drilling rig with a downhole drilling tool suspended therefrom. The downhole drilling tool is selectively advanced into the earth to form the wellbore. The downhole drilling tool is operated according to a wellsite setup. Wellsite parameters are collected from a plurality of sensors positioned about the wellsite. The wellsite parameters are transmitted to an offsite control center. The offsite control center performs an analysis of the wellsite parameters and automatically adjusts the wellsite setup from the offsite control center based on the analysis.

Wellbore drilling method

Growing community of inventors

Katy, TX, United States of America

Reinhart Ciglenec