Wells – With electrical means
Patent
1984-05-01
1986-10-14
Novosad, Stephen J.
Wells
With electrical means
166 64, 166250, 166242, 324355, 324368, 340856, E21B 47022, E21B 4706, E21B 4712
Patent
active
046167021
ABSTRACT:
A tool changes the electrical conductance across a nonconductive separation in a string of electrically conductive casing in a well located in the earth. The tool is for transmission of data up the well. The casing has at least one inwardly extending landing shoulder for the tool. The tool has a housing elongated between first and second ends. The housing has a first contact for electrical connection to the casing on one side of the nonconductive separation. The housing has a second contact spaced from the first contact for electrical connection to the casing on the other side of the nonconductive separation from the one side. The housing also has a nonconductive housing portion, substantially circular in cross-section, between the first and second contacts. An outwardly extending landing shoulder is provided on the housing for landing and for supporting the tool on the casing landing shoulder. A controllable switch is contained in the housing for electrically connecting and disconnecting the first and second contacts to thereby change the electrical conductance in the casing across the nonconductive separation representative of data.
A combined tool support and casing section with a nonconductive ring is also disclosed.
REFERENCES:
patent: Re21102 (1939-05-01), Jakosky
patent: 1804078 (1931-05-01), Baden
patent: 1991658 (1935-02-01), Clark et al.
patent: 2217857 (1940-10-01), Byck
patent: 2225668 (1940-12-01), Subkow et al.
patent: 2242612 (1941-05-01), Leonardon
patent: 2310757 (1943-02-01), Wagner
patent: 2400170 (1946-05-01), Silverman
patent: 2567507 (1951-09-01), Brown
patent: 3057409 (1962-10-01), Grossman, Jr.
patent: 3434046 (1969-03-01), Wilson et al.
patent: 3437992 (1969-04-01), Johnston
patent: 3620300 (1971-11-01), Crowson
patent: 3758731 (1973-09-01), Vann et al.
patent: 3900827 (1975-08-01), Lamel et al.
patent: 4035763 (1977-07-01), Cowles
patent: 4182159 (1980-01-01), Churchman
patent: 4286217 (1981-07-01), Planche et al.
patent: 4349072 (1982-09-01), Escaron et al.
patent: 4413679 (1983-11-01), Perkins
patent: 4433724 (1984-02-01), Nagano et al.
patent: 4484627 (1984-11-01), Perkins
patent: 4522262 (1985-06-01), Perkins
IEEE Transactions on Geoscience and Remote Sensing, vol. GE-20, No. 2, Apr. 1982, J. Bhagwan and F. N. Trofimenkoff report on electric drill stem telemetry method.
Oil & Gas Journal, Feb. 21, 1983, pp. 84-90.
Hamberlin Clifford W.
Hanson Merle E.
Titchener Paul F.
Comdisco Resources, Inc.
Novosad Stephen J.
LandOfFree
Tool and combined tool support and casing section for use in tra does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tool and combined tool support and casing section for use in tra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tool and combined tool support and casing section for use in tra will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1336002