Boots – shoes – and leggings
Patent
1980-02-25
1982-06-08
Smith, Jerry
Boots, shoes, and leggings
73152, 324323, 324339, G06F 1520
Patent
active
043342710
ABSTRACT:
The disclosed technique finds and shows the attitude of one or more bedding surfaces of an underground earth formation which intersect a borehole in that formation. It starts with a log for each respective path along which a multipath investigating tool takes well logging measurements while being passed through the borehole. A set of a dip and an azimuth signal is produced for each of a number of assumed bedding surfaces which intersect, at a respective number of different attitudes, the same point at the centerline of the tool for a given depth of the tool in the borehole. Portions of the logs for the respective paths chosen by reference to their intersection with each assumed bedding surface are combined so as to get a measure of the mutual degree of fit between the combined log portions. A two-dimensional map is then produced, made up of such measures of fit for the different assumed bedding surfaces at a given depth in the borehole. The map of these measures of fit is used together with other such maps for respective different depths in the borehole, to find, with a high degree of accuracy, the actual attitudes of bedding surfaces which intersect the borehole at respective depths. Various ways are disclosed of refining the maps and making them more accurate, and for forming a tangible record of the results.
REFERENCES:
patent: 3457499 (1969-07-01), Tanguy
patent: 3466532 (1969-09-01), Kolb
patent: 3691363 (1972-09-01), Armistead
Schlumberger Technology Corporation
Smith Jerry
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