Schlumberger Technology Corporation

Lawrence C. Lee

Ashley Kishino

Grigory L. Arauz

Steven E. Buchanan

Kenneth L. Havlinek

Thomas H. Zimmerman

W. Keith Russell

Anthony F. Veneruso

Kenneth L Havlinek

Jonathan Webster Brown

Wenlin Zhang

Christopher Del Campo

Mark Milkovisch

Raymond V Nold, Iii

Vance E Nixon

Alexander F Zazovsky

Jacques R Tabanou

Anthony Frank Veneruso

Reinhart Ciglenec

Anthony R H Goodwin

Andrew L Kurkjian

Stephane Briquet

Ricardo Vasques

Chengli Dong

Thomas D MacDougall

Ian D Bryant

Thomas H Zimmerman

Ahmed Hammami

Ashley C Kishino

Steven E Buchanan

Lawrence C Lee

Noriyuki Matsumoto

Scott Jacobs

Donald E Hensley

Troy Fields

Arthur D Liberman

Grigory L Arauz

Brindesh Dhruva

Craig Borman

Hisayo Tauchi

Darcy Freemark

Moin Muhammed

W Keith Russell

Apparatus and methods to control fluid flow in a downhole tool are disclosed. A disclosed example system includes a hydraulically actuatable device having a cavity for receiving pressurized hydraulic fluid stored by a reservoir, a first and a second hydraulic pump, a motor and means for selectively flowing hydraulic fluid from the outlet of at least one of the first and second pumps to the at least one cavity. The first and second hydraulic pumps include an inlet fluidly coupled to the reservoir and an outlet fluidly coupled to the cavity, and the motor is operatively coupled to at least one of the pumps.

Apparatus and methods to control fluid flow in a downhole tool

A fluid analysis assembly for analyzing a fluid the fluid analysis assembly includes a chamber, a fluid movement device, a pressurization assembly and at least one sensor. The chamber defines an evaluation cavity for receiving the fluid. The fluid movement device has a force medium applying force to the fluid to cause the fluid to move within the cavity. The pressurization assembly changes the pressure of the fluid in a continuous manner. The at least one sensor communicates with the fluid for sensing at least one parameter of the fluid while the pressure of the fluid is changing in the continuous manner.

Fluid analysis method and apparatus

Techniques for reduced contamination formation evaluation are provided. The techniques relate to drawing fluid into a downhole tool positionable in a wellbore penetrating a subterranean formation having a virgin fluid and a contaminated fluid therein. Fluid is drawn into at least two inlets for receiving the fluids from the formation. At least one evaluation flowline is fluidly connected to at least one of the inlets for passage of the virgin fluid into the downhole tool. At least one cleanup flowline is fluidly connected to the inlets for passage of the contaminated fluid into the downhole tool. At least one fluid circuit is fluidly connected to the evaluation flowline and/or cleanup flowlines for selectively drawing fluid therein. At least one fluid connector is provided for selectively establishing a fluid connection between the flowlines. At least one sensor is provided for measuring downhole parameters in one of the flowlines. Fluid may be selectively pumped through the flowlines to reduce the contamination in the evaluation flowline.

Apparatus and method for formation evaluation

This invention relates to fuel cells, and in one embodiment, to fuel cells that are especially well suited for downhole use in oil and gas wells, and for subsea use in connection with offshore wells.

Fuel cell for downhole and subsea power systems

An integrated pumping system for use in environments, such as subterranean environments, to move a desired fluid from one location to another. The integrated pumping system comprises one or more stages that each have an integrated pump and motor. A controller may be utilized to individually control the one or more integrated pumps and motors.

Integrated pumping system for use in pumping a variety of fluids

The present invention relates to a well-bore sensor apparatus and method. The apparatus includes a downhole tool carrying at least one sensor plug for deployment into the sidewall of a well-bore. The apparatus may also be used in conjunction with a surface control unit and a communication link for operatively coupling the sensor plug to the surface control unit. The sensor plug is capable of collecting well-bore data, such as pressure or temperature, and communicating the data uphole via a communication link, such as the downhole tool or an antenna. The downhole data may then be analyzed and control commands sent in response thereto. The sensor plug and/or the downhole tool may be made to respond to such control commands. In some embodiments, multiple surface control units for corresponding wells may be networked for decision making and control across multiple well-bores.

Well-bore sensor apparatus and method

One embodiment of the present invention is a fuel cell suitable for use downhole in an oil and gas well includes a fuel vessel that providing a source of fuel and an oxidant vessel providing a source of oxidant. A reaction zone comprises at least one cathode, at least one anode, and an electrolyte between each anode and cathode. A closed water vessel is connected to the reaction zone by at least one capillary flow path. The fuel cell also comprises a fuel conduit that connects the fuel vessel and the reaction zone. This fuel conduit comprises a fuel pressure control apparatus adapted to maintain a static pressure of fuel in the reaction zone. The fuel cell further comprises an oxidant conduit that connects the oxidant vessel and the reaction zone, and includes an oxidant pressure control apparatus adapted to maintain a static pressure of oxidant in the reaction zone. In addition, the fuel cell comprises electrical conductors connected to the anode and cathode and adapted to conduct electricity to an external device. In this fuel cell, there is no need for fuel, oxidant, or water to flow in a closed loop through the reaction zone.

Fuel cell for downhole power systems

Growing community of inventors

Houston, TX, United States of America

Kenneth L Havlinek