Methods and apparatus for reducing electromagnetic signal noise

Details Methods and apparatus for reducing electromagnetic signal noise Methods and apparatus for reducing electromagnetic signal noise

2007-07-10

2007-07-10

McElheny, Jr., D. (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

C340S853200

Reexamination Certificate

active

11152408

ABSTRACT:
The present invention generally provides methods and apparatus for reducing noise in a detected electromagnetic wave used to telemeter data during a wellbore operation. In one embodiment, two surface antennae are placed on opposite sides of the wellbore and at the same distance from the wellbore. The signals from the two antennae are summed to reduce the noise in the electromagnetic signal transmitted from the electromagnetic downhole tool.

REFERENCES:
patent: 2000716 (1935-05-01), Polk
patent: 2096279 (1937-10-01), Karcher
patent: 2151525 (1939-03-01), Pittman et al.
patent: 2364957 (1944-12-01), Douglas
patent: 2388141 (1945-10-01), Harrington
patent: 2650067 (1953-08-01), Martin
patent: 2917704 (1959-12-01), Arps
patent: 2940787 (1960-06-01), Goodner
patent: 3292728 (1966-12-01), Ehrlich
patent: 3831138 (1974-08-01), Rammner
patent: 3900827 (1975-08-01), Lemel et al.
patent: 3905010 (1975-09-01), Fitzpatrick
patent: 4015234 (1977-03-01), Krebs
patent: 4160970 (1979-07-01), Nicolson
patent: 4348672 (1982-09-01), Givler
patent: 4494072 (1985-01-01), Jeter et al.
patent: 4496174 (1985-01-01), McDonald et al.
patent: 4578675 (1986-03-01), MacLeod
patent: 4589187 (1986-05-01), Stone et al.
patent: 4625173 (1986-11-01), Wisler et al.
patent: 4674773 (1987-06-01), Stone et al.
patent: 4691203 (1987-09-01), Rubin et al.
patent: 4736204 (1988-04-01), Davison
patent: 4786086 (1988-11-01), Guthrie et al.
patent: 4790570 (1988-12-01), De Gruijter
patent: 4800385 (1989-01-01), Yamazaki
patent: 4861074 (1989-08-01), Eastlund et al.
patent: 4927186 (1990-05-01), Zoboli
patent: 4980682 (1990-12-01), Klein et al.
patent: 5130706 (1992-07-01), Van Steenwyk
patent: 5138313 (1992-08-01), Barrington
patent: 5163714 (1992-11-01), Issenmann
patent: 5184692 (1993-02-01), Moriarty
patent: 5251708 (1993-10-01), Perry et al.
patent: 5278550 (1994-01-01), Rhein-Knudsen et al.
patent: 5303773 (1994-04-01), Czernichow et al.
patent: 5394141 (1995-02-01), Soulier
patent: 5396232 (1995-03-01), Mathieu et al.
patent: 5448227 (1995-09-01), Orban et al.
patent: 5725061 (1998-03-01), Van Steenwyk et al.
patent: 5749605 (1998-05-01), Hampton, III et al.
patent: 5924499 (1999-07-01), Birchak et al.
patent: 6050353 (2000-04-01), Logan et al.
patent: 6098727 (2000-08-01), Ringgenberg et al.
patent: 6158532 (2000-12-01), Logan et al.
patent: 6209632 (2001-04-01), Holbert et al.
patent: 6223826 (2001-05-01), Chau et al.
patent: 6223862 (2001-05-01), Barnes
patent: 6367323 (2002-04-01), Camwell et al.
patent: 6405795 (2002-06-01), Holbert et al.
patent: 6439324 (2002-08-01), Ringgenberg et al.
patent: 6556054 (2003-04-01), Goodman et al.
patent: 6572152 (2003-06-01), Dopf et al.
patent: 6672383 (2004-01-01), Holbert et al.
patent: 6801136 (2004-10-01), Goodman et al.
patent: 2002/0189803 (2002-12-01), Holbert et al.
patent: 2004/0069514 (2004-04-01), Rodney et al.
patent: 2004/0134652 (2004-07-01), Holbert
patent: 676449 (1963-12-01), None
patent: 1217237 (1987-01-01), None
patent: 1277027 (1990-11-01), None
patent: 1323691 (1993-10-01), None
patent: 2151525 (1995-06-01), None
patent: 2174955 (1973-10-01), None
patent: 2618912 (1989-02-01), None
patent: 1359445 (1974-07-01), None
patent: WO 82/02754 (1982-08-01), None
patent: WO 96/41931 (1996-12-01), None
patent: WO 00/13349 (2000-03-01), None
U.K. Search Report, GB0511852.6, dated Nov. 18, 2005.
CA Examination Report, Application No.: 2,509,819, dated Feb. 12, 2007.

Affiliated with

Also associated with

Rating

Methods and apparatus for reducing electromagnetic signal noise does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and apparatus for reducing electromagnetic signal noise, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for reducing electromagnetic signal noise will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3739328