Anthony Louis Collins

US Patent:

6577244, Jun 10, 2003

Filed:

May 22, 2000

Appl. No.:

09/576271

Inventors:

Brian Clark - Sugar Land TX
John Hunka - Sugar Land TX
Mark T. Frey - Sugar Land TX
David L. Smith - Stafford TX
Dhananjay Ramaswamy - Stafford TX
Anthony Collins - Houston TX
Stephen Bonner - Sugar Land TX

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V 300

US Classification:

3408546, 3408532, 3408544, 324339, 324369

Abstract:

Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport.

US Patent:

6614229, Sep 2, 2003

Filed:

Mar 27, 2000

Appl. No.:

09/535995

Inventors:

Brian Clark - Sugar Land TX
Martin G. Lüling - Paris, FR
Mark Frey - Sugar Land TX
Dhananjay Ramaswamy - Stafford TX
Anthony Collins - Houston TX

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V 308

US Classification:

324338

Abstract:

Systems and methods for monitoring a characteristic of a subterranean hydrocarbon reservoir and for placing a borehole in the vicinity of a well in an earth formation. New well completion systems with slotted stations are utilized to provide through-casing signal-transmission and/or reception. Hydraulic isolation between the interior and the exterior of the completion is provided by pressure barrier means at the slotted stations. The completions permit temporary or permanent monitoring of changes in reservoir saturation with the use of mobile sources/sensors. The completions also form part of a system for accurately placing a well within a desired distance and orientation relative to an existing well.

US Patent:

6843117, Jan 18, 2005

Filed:

Aug 15, 2002

Appl. No.:

10/064774

Inventors:

Andrew L. Kurkjian - Sugar Land TX, US
Anthony L. Collins - Houston TX, US
Angus J. Melbourne - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 4700

US Classification:

7315201, 7315203, 7315246, 175 50

Abstract:

A method and apparatus is provided to determine downhole pressures, such as annular pressure and/or pore pressure, during a drilling operation. A bottom hole assembly (BHA) of a downhole tool includes one or more pressure equalizing assemblies capable of registering the pore pressure when the BHA is at rest and in contact with the wellbore, and annular pressure of a wellbore when it is not. Wellbore fluid is permitted to enter the pressure equalizing assembly and register an annular pressure measurement. Once the BHA comes into contact with the wellbore and to rest, fluid communication is established between the pressure equalizing assembly and the formation to generate a pore pressure measurement. The pressure equalizing assembly includes a sliding valve selectively moveable between an open and closed position in response to operation of the BHA so that the desired pressure measurement may be taken.

US Patent:

6863127, Mar 8, 2005

Filed:

Jun 3, 2003

Appl. No.:

10/453231

Inventors:

Brian Clark - Sugar Land TX, US
Martin G. Lüling - Paris, FR
Mark Frey - Sugar Land TX, US
Dhananjay Ramaswamy - Stafford TX, US
Anthony Collins - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B049/00

US Classification:

16625001, 166 66

Abstract:

Systems and methods for monitoring a characteristic of a subterranean hydrocarbon reservoir and for placing a borehole in the vicinity of a well in an earth formation. New well completion systems with slotted stations are utilized to provide through-casing signal-transmission and/or reception. Hydraulic isolation between the interior and the exterior of the completion is provided by pressure barrier means at the slotted stations. The completions permit temporary or permanent monitoring of changes in reservoir saturation with the use of mobile sources/sensors. The completions also form part of a system for accurately placing a well within a desired distance and orientation relative to an existing well.

US Patent:

6903660, Jun 7, 2005

Filed:

Jan 30, 2003

Appl. No.:

10/355613

Inventors:

Brian Clark - Sugar Land TX, US
John Hunka - Sugar Land TX, US
Mark T. Frey - Sugar Land TX, US
David L. Smith - Stafford TX, US
Dhananjay Ramaswamy - Stafford TX, US
Anthony Collins - Houston TX, US
Stephen Bonner - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B023/00

US Classification:

3408548, 3408546, 166381, 324333, 324339

Abstract:

Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport.

US Patent:

6912465, Jun 28, 2005

Filed:

Dec 12, 2002

Appl. No.:

10/248034

Inventors:

Anthony L. Collins - Houston TX, US
Andrew Hawthorn - Stafford TX, US
Cengiz Esmersoy - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V001/40

US Classification:

702 6, 702 11, 702 18

Abstract:

Techniques are presented for determining the drift of a clock adapted for subsurface disposal. Seismic signals are transmitted through the subsurface medium from an uphole location at selected times, acoustic signals associated with the transmitted seismic signals are received with acoustic sensors at identified downhole locations. First and second transit times for acoustic signals received at an identified downhole reference location are determined using the clock. A time difference between the first and second signal transit times at the reference point is calculated to determine the clock drift.

US Patent:

6930652, Aug 16, 2005

Filed:

Nov 1, 2002

Appl. No.:

10/065599

Inventors:

David L. Smith - Stafford TX, US
Anthony L Collins - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

H01Q001/36
G01V003/10

US Classification:

343895, 343719, 343867, 324339

Abstract:

The invention relates to antenna configurations for electromagnetic logging tools. The antennas have one or more electrical conductors disposed on a dielectric core. The conductor is formed on the core through plating or deposition processes and arranged such that the antenna has a first magnetic dipole moment substantially perpendicular to a longitudinal axis of the core. One embodiment includes an antenna adapted for mutual balancing using interleaved conductive paths or disks to alter the magnetic dipole moment to mutually balance the antenna system. The invention also relates to a method for producing such antenna structures.

US Patent:

6975243, Dec 13, 2005

Filed:

Jan 30, 2003

Appl. No.:

10/355599

Inventors:

Brian Clark - Sugar Land TX, US
John Hunka - Sugar Land TX, US
Mark T. Frey - Sugar Land TX, US
David L. Smith - Stafford TX, US
Dhananjay Ramaswamy - Stafford TX, US
Anthony Collins - Houston TX, US
Stephen Bonner - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V003/00

US Classification:

3408546, 3408532, 3408544, 324339, 324369, 138 94, 137 14, 137 1511

Abstract:

Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport.