Methods and apparatus to produce stick-slip motion of logging tool attached to a wireline drawn upward by a continuously rotating wireline drum
Abstract
Methods and apparatus are described to produce stick-slip motion of a logging tool within a cased well attached to a wireline that is drawn upward by a continuously rotating wireline drum. The stick-slip motion results in the periodic upward movement of the tool in the cased well described in terms of a dwell time during which time the tool is stationary, the move time during which time the tool moves, and the stroke that is upward distance that the tool translates during the "slip" portion of the stick-slip motion. This method of measurement is used to log the well at different vertical positions of the tool. Therefore, any typical "station-to-station logging tool" may be modified to be a "continuous logging tool", where "continuous" means that the wireline drum continually rotates while the tool undergoes stick-slip motion downhole and measurements are performed during the dwell times when the tool is momentarily stationary. The stick-slip methods of operation and the related apparatus are particularly described in terms of making measurements of formation resistivity from within a cased well during the dwell times when the tool is momentarily stationary during the periodic stick-slip motion of the logging tool.
- Inventors:
-
- (Bothell, WA)
- Seattle, WA
- Issue Date:
- Research Org.:
- ParaMagnetic Logging, Inc. (Bothell, WA)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 871368
- Patent Number(s):
- 5717334
- Assignee:
- ParaMagnetic Logging, Inc. (Woodinville, WA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
- DOE Contract Number:
- FG06-84ER13294; FG22-88BC14243; FG22-90BC14617; FG22-93BC14966
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- methods; apparatus; produce; stick-slip; motion; logging; tool; attached; wireline; drawn; upward; continuously; rotating; drum; described; cased; results; periodic; movement; terms; dwell; time; stationary; move; moves; stroke; distance; translates; slip; portion; method; measurement; log; vertical; positions; typical; station-to-station; modified; continuous; means; continually; rotates; undergoes; downhole; measurements; performed; times; momentarily; operation; related; particularly; formation; resistivity; stick-slip motion; dwell time; logging tool; formation resistivity; vertical position; upward movement; continuously rotating; related apparatus; drawn upward; produce stick-slip; /324/
Citation Formats
Vail, III, William Banning, and Momii, Steven Thomas. Methods and apparatus to produce stick-slip motion of logging tool attached to a wireline drawn upward by a continuously rotating wireline drum. United States: N. p., 1998.
Web.
Vail, III, William Banning, & Momii, Steven Thomas. Methods and apparatus to produce stick-slip motion of logging tool attached to a wireline drawn upward by a continuously rotating wireline drum. United States.
Vail, III, William Banning, and Momii, Steven Thomas. Thu .
"Methods and apparatus to produce stick-slip motion of logging tool attached to a wireline drawn upward by a continuously rotating wireline drum". United States. https://www.osti.gov/servlets/purl/871368.
@article{osti_871368,
title = {Methods and apparatus to produce stick-slip motion of logging tool attached to a wireline drawn upward by a continuously rotating wireline drum},
author = {Vail, III, William Banning and Momii, Steven Thomas},
abstractNote = {Methods and apparatus are described to produce stick-slip motion of a logging tool within a cased well attached to a wireline that is drawn upward by a continuously rotating wireline drum. The stick-slip motion results in the periodic upward movement of the tool in the cased well described in terms of a dwell time during which time the tool is stationary, the move time during which time the tool moves, and the stroke that is upward distance that the tool translates during the "slip" portion of the stick-slip motion. This method of measurement is used to log the well at different vertical positions of the tool. Therefore, any typical "station-to-station logging tool" may be modified to be a "continuous logging tool", where "continuous" means that the wireline drum continually rotates while the tool undergoes stick-slip motion downhole and measurements are performed during the dwell times when the tool is momentarily stationary. The stick-slip methods of operation and the related apparatus are particularly described in terms of making measurements of formation resistivity from within a cased well during the dwell times when the tool is momentarily stationary during the periodic stick-slip motion of the logging tool.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}