Rock extensometer

Details Rock extensometer Rock extensometer

1995-07-10

1997-05-13

Chilcot, Richard

Measuring and testing

Borehole or drilling

During drilling

73784, 33544, 166 66, E21B 4704, E21B 4708

Patent

active

056294808

ABSTRACT:
An extensometer for use in a borehole comprises a combination of linear motion transducers located with daisy wheel anchors, which may be attached together if desired with extension bars. Linkages are used to connect the transducers to the daisy wheel anchors. The transducers are set up to measure distance changes both axially along the hole or radially. The extensometer includes at least one axially measuring transducer, and at least two radially measuring transducers. The transducers change in value according to changes in borehole dimensions; the transducer values are monitored electrically.

REFERENCES:
patent: 2267110 (1941-12-01), Kinley et al.
patent: 2639512 (1953-05-01), Legrand
patent: 2640271 (1953-06-01), Boucher
patent: 2651199 (1953-08-01), Collins et al.
patent: 2656613 (1953-10-01), Goble
patent: 2736967 (1956-03-01), Doll
patent: 2744181 (1956-05-01), Rea
patent: 2879604 (1959-03-01), Chaney et al.
patent: 3097433 (1963-07-01), Cubberly
patent: 3349498 (1967-10-01), Oliver
patent: 3474541 (1969-10-01), Cubberly
patent: 3555689 (1971-01-01), Cubberly
patent: 3600938 (1971-08-01), Waddell
patent: 3977468 (1976-08-01), Brewer et al.
patent: 4006530 (1977-02-01), Nicolas
patent: 4090405 (1978-05-01), McKee
patent: 4099564 (1978-07-01), Hutchison
patent: 4228593 (1980-10-01), Frank et al.
patent: 4251921 (1981-02-01), Fink
patent: 4523640 (1985-06-01), Wilson et al.
patent: 4673890 (1987-06-01), Copland et al.
patent: 4719803 (1988-01-01), Capelle et al.
patent: 4760741 (1988-08-01), Koopmans et al.
patent: 4813278 (1989-03-01), Kosugi
patent: 4852262 (1989-08-01), Babcock et al.
patent: 4932471 (1990-06-01), Tucker et al.
patent: 5086645 (1992-02-01), Deaton
patent: 5172587 (1992-12-01), Long
patent: 5224274 (1993-07-01), Blaiklock
patent: 5337613 (1994-08-01), Kovari
"Rod Extensometers with Packer Anchors," Product 121, Code 9020, Interfels GmbH sales brochure, undated, 4 pp.
"Telemac" extensometer product description, undated, 2 pp.
"Waste Isolation Extensometers", Sinco product brochure, 1988, 4 pp.
"Rod-Type Extensometer", Geokon Inc. product brochure, undated, 5 pp.

Affiliated with

Also associated with

Rating

Rock extensometer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rock extensometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rock extensometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1386920