Jacques A Jundt

US Patent:

6641434, Nov 4, 2003

Filed:

May 31, 2002

Appl. No.:

10/160311

Inventors:

Bruce W. Boyle - Sugar Land TX
Raghu Madhavan - Houston TX
Jacques Jundt - Bethel CT

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

H01R 33945

US Classification:

439577, 439950, 439 38, 1662426

Abstract:

A robust, low-loss wired pipe joint is provided for service as a component of a wired pipe string for transmitting measurement data to a surface station from locations in a borehole in oil well drilling and oil well operations. Conductive layers reduce signal energy losses over the length of the drill string by reducing resistive losses and flux losses at each inductive coupler. The wired pipe joint is robust in that it remains operational in the presence of gaps in the conductive layer. A wired pipe joint includes an elongate tubular shank having an axial bore, a threaded box-end, and a threaded pin end. A first annular coil, fixedly mounted to the box-end is partially surrounded by a first high-conductivity, low-permeability layer, and a second annular coil fixedly mounted to the pin-end is partially surrounded by a second high-conductivity, low-permeability layer, such that when the box-end of a first wired pipe joint is coupled for operation with the pin-end of a second wired pipe joint, the first and second high-conductivity, low-permeability layers form at least a portion of a toroidal path enclosing the first annular coil of the first wired pipe joint and the second annular coil of the second wired pipe joint. Coil windings of the first and second coils of the wired pipe joint are electrically coupled.

US Patent:

6866306, Mar 15, 2005

Filed:

Jun 14, 2001

Appl. No.:

09/881333

Inventors:

Bruce W. Boyle - Brookfield CT, US
Raghu Madhavan - Brookfield CT, US
Jacques Jundt - Bethel CT, US

Assignee:

Schlumberger Technology Corporation - Ridgefield CT

International Classification:

F16L025/00

US Classification:

285333, 285 91, 2853321, 175 40, 166 665, 3408544, 3408545, 3408546, 367 82, 439950

Abstract:

A first flux-loop inductive coupler element electrically couples with a second flux-loop inductive coupler element. The first flux-loop inductive coupler element comprises a first ring-like core having high magnetic permeability and a conical-section annular first face transverse to the plane of the first core. The first face has a first annular groove separating a first conical-section larger-diameter face and a first conical-section smaller-diameter face. A first coil is wound within the annular groove. The first and second cores form a low-reluctance closed magnetic path around the first coil and a second coil of the second flux-loop inductive coupler element. A first current-loop inductive coupler element electrically couples with a second current-loop inductive coupler element. The first current-loop inductive coupler element has a first high-conductivity, low-permeability shaped belt of a first end of a first pipe joint, a first ring-like core located at the first end, and a first electrically conductive coil wound about the first ring-like core. The first high-conductivity, low-permeability shaped belt partially encloses the first coil.

US Patent:

6978833, Dec 27, 2005

Filed:

Jun 2, 2003

Appl. No.:

10/452447

Inventors:

Philippe Salamitou - Mamaroneck NY, US
Jacques Jundt - Bethel CT, US
Robert Bailey - Danbury CT, US

Assignee:

Schlumberger Technology Corporation - Ridgefield CT

International Classification:

E21B047/09

US Classification:

1662551, 16625011, 1662542, 175 50

Abstract:

Improved methods, apparatus, and systems for obtaining information regarding a formation, a casing, or fluid within the casing utilize an interrogator and one or more sensing devices attached to a casing in a wellbore. The interrogator, which is located and typically movable inside the wellbore, is effectively a toroidal transformer which includes an elongate conducting body surrounded by a core of high magnetic permeability material and carrying a winding. The sensing device, which is positioned and fixed in an opening cut in the casing, includes a housing, a sensor with associated electronic circuitry and an electrode. The electrode is insulated from the casing by an insulator, and the housing of the sensing device is typically adapted to provide a hydraulic seal with the opening in the casing. The interrogator and sensing device communicate in a wireless manner.

US Patent:

7040415, May 9, 2006

Filed:

Oct 22, 2003

Appl. No.:

10/605730

Inventors:

Bruce W. Boyle - Sugar Land TX, US
Nicolas Pacault - Houston TX, US
Jean-Michel Hache - Houston TX, US
Remi Hutin - New Ulm TX, US
Raghu Madhavan - Houston TX, US
Jacques Jundt - Bethel CT, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 7/04

US Classification:

175 40, 175 50

Abstract:

A cabled communication link for a drill string includes spaced apart adapter subs within the drill string and a cable connecting the adapter subs for communication of a signal therebetween. The cabled communication link may be drill pipe joints are interconnected within the drill string between adapter subs to form a piped communication link, whereby the cabled communication link establishes a pathway to the piped communication link for transmitting a signal through the drill string. The cabled communication link may also be in a non-wired section of the drill string is disposed between adapter subs, whereby the cabled communication link establishes a pathway for transmitting a signal through the non-wired section of the drill string. Inductive couplings are preferably used for communication across the adapter subs and wired drill pipe joints. Another aspect of the cabled communication employs wireless transceivers at or near the surface of the wellbore.

US Patent:

7140434, Nov 28, 2006

Filed:

Jul 8, 2004

Appl. No.:

10/887508

Inventors:

Christian Chouzenoux - St. Cloud, FR
Jacques Jundt - Bethel CT, US
Philippe Salamitou - Mamaroneck NY, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 47/00
E21B 43/11

US Classification:

16625011, 166297, 16625015

Abstract:

A sensor for installation in an underground well having a casing or tubing installed therein, the sensor comprising: a sensor body that can be installed in a hole formed in the casing or tubing so as to extend between the inside and outside of the casing or tubing; sensor elements located within the body and capable of sensing properties of an underground formation surrounding the well; and communication elements located within the body and capable of communicating information between the sensor elements and a communication device in the well; wherein the sensor body also includes a portion that can be sealed to the casing or tubing to prevent fluid communication between the inside and the outside of the casing or tubing through the hole when the sensor body is installed therein. The invention also provides systems incorporating such sensors, methods for installing sensors and applications of such systems. The sensors can include pressure, temperature, resistivity, conductivity, stress, strain, pH and chemical composition sensors.

US Patent:

7168487, Jan 30, 2007

Filed:

Dec 18, 2003

Appl. No.:

10/740211

Inventors:

Philippe Salamitou - Mamaroneck NY, US
Jacques Jundt - Bethel CT, US
Robert Bailey - Danbury CT, US

Assignee:

Schlumberger Technology Corporation - Ridgefield CT

International Classification:

E21B 47/01

US Classification:

16625011, 16625007, 1662541, 1662551, 175 48, 175 50

Abstract:

Methods, apparatus, and systems for obtaining information regarding a formation, a casing, or fluid within the casing are provided which utilize an interrogator and one or more sensing devices attached to a casing in a wellbore. The interrogator is located within and may be movable inside the wellbore. The sensing device is positioned and fixed in an opening in the casing. The sensing device includes a housing and a sensor with associated electronic circuitry. The interrogator and sensing device include a magnetic coupling therebetween that is operable when the interrogator and sensing device are positioned in close proximity to one another. Preferably, the magnetic coupling is realized by at least one solenoid winding for the interrogator and at least one solenoid winding for the sensing device, which provide a loosely-coupled transformer interface therebetween. The interrogator and sensing device communicate in a wireless manner over the magnetic coupling therebetween.

US Patent:

7279678, Oct 9, 2007

Filed:

Aug 15, 2005

Appl. No.:

11/203743

Inventors:

A. Ballard Andrews - Wilton CT, US
Jacques Jundt - Bethel CT, US
Robert J. Schroeder - Newtown CT, US
Bhavani Raghuraman - Wilton CT, US
Oliver C. Mullins - Ridgefield CT, US

Assignee:

Schlumber Technology Corporation - Ridgefield CT

International Classification:

G01V 8/00

US Classification:

2502691

Abstract:

Methods and apparatus for analyzing a hydrocarbon mixture are disclosed, comprising at least one light-emitting diode (LED) and at least one photodetector positioned to detect energy transmitted by the LED through a sample of the hydrocarbon mixture. In at least one embodiment an optical filter is coupled to the output of the LED to mitigate the adverse effects of the LED's sensitivity to temperature.

US Patent:

7424366, Sep 9, 2008

Filed:

Aug 28, 2006

Appl. No.:

11/511137

Inventors:

Dan Eugen Angelescu - Cambridge MA, US
Thibaud Desbarbieux - Courcouronnes, FR
Jacques Jundt - Newton Highlands MA, US
Edward Harrigan - Danbury CT, US
Jerome Durivault - Annecy, FR

Assignee:

Schlumberger Technology Corporation - Ridgefield CT

International Classification:

G01V 9/00

US Classification:

702 12

Abstract:

The present invention recited a method and apparatus for measuring a parameter of a fluid within a fluid channel using a tracer element injection by an injection element and detected by a detection element at a location separate from the injection element location. The injection element and detection element of the present invention are in communication with a computational element, wherein the computation element is capable of measuring a parameter of a fluid in a fluid channel based upon time of flight data derived from the injection element and the detection element.