Electromagnetic gap sub assembly

Details Electromagnetic gap sub assembly Electromagnetic gap sub assembly

2007-08-07

2007-08-07

Dang, Hoang (Department: 3672)

Boring or penetrating the earth

With signaling, indicating, testing or measuring

C166S065100, C166S242600, C175S320000, C340S854400

Reexamination Certificate

active

10903909

ABSTRACT:
A compact, robust, wear resistant, and high performance electrically insulating gap sub for use with borehole EM Telemetry is disclosed. In one embodiment, the gap sub may include an externally threaded mandrel separated from an internally threaded housing by a dielectric material. Additionally, some embodiments may include an external gap ring for separating the upper and lower electrical halves of the sub which offers structural support, acts as the primary external seal, and provides an abrasion resistant non-conductive length on the exterior. Some embodiments may include torsion pins to prevent the possible unscrewing of the dielectric filled threaded sections should the dielectric material become damaged or weakened.

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: 3831138 (1974-08-01), Rammner
patent: 3900827 (1975-08-01), Lamel 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: 6367323 (2002-04-01), Camwell et al.
patent: 6405795 (2002-06-01), Holbert et al.
patent: 6439324 (2002-08-01), Ringgenberg et al.
patent: 6572152 (2003-06-01), Dopf et al.
patent: 6657597 (2003-12-01), Rodney et al.
patent: 6672383 (2004-01-01), Holbert et al.
patent: 6801136 (2004-10-01), Goodman et al.
patent: 6926098 (2005-08-01), Peter
patent: 2002/0113432 (2002-08-01), Dopf et al.
patent: 2002/0189803 (2002-12-01), Holbert et al.
patent: 2004/0069574 (2004-04-01), Rodney et al.
patent: 2004/0134652 (2004-07-01), Holbert
patent: 676449 (1963-12-01), None
patent: 1217231 (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: 2618912 (1989-03-01), 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 98/06924 (1998-02-01), None
patent: WO 00/13349 (2000-03-01), None
U.K. Search Report, Application No. GB04170726.6, dated Nov. 22, 2004.
CA Office Action, Application No. 2,476,370, Dated Aug. 28, 2006.

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