Dipmeter displacement processing technique

Details Dipmeter displacement processing technique Dipmeter displacement processing technique

1982-05-28

1984-06-05

Atkinson, Charles E.

Boots, shoes, and leggings

73152, 324333, 367 25, G01V 140

Patent

active

044532199

ABSTRACT:
In order to determine dips of subsurface formations more reliably, a dipmeter tool with three or more transducers, spaced circumferentially around the borehole wall, is used and the transducer outputs are correlated in a novel way to provide redundant indications of displacements between the depths at which respective transducers intercept a given layer. These redundant displacements are processed to single out at each given level only those displacement pairs which result in the most consistent dips over several mutually overlapping depth intervals called zones. Consistency is established in each zone without regard to a neighboring zone, to avoid any long range bias.

REFERENCES:
patent: 3068400 (1962-12-01), Castel et al.
patent: 3466532 (1969-09-01), Kolb
patent: 4348748 (1982-09-01), Clavier et al.
"Stratigraphic Applications of Dipmeter Data in Mid-Continent" Campbell, Jr., The American Association of Petroleum Geologists Bulletin vol. 52, No. 9, Sep. 1968.
"Automatic Computation of Dipmeter Logs Digitally Recorded on Magnetic Tapes", Moran et al., Journal of Petroleum Technology, Jul. 1962, pp. 771-782.
"The High Resolution Dipmeter Tool", Allaud et al., The Log Analyst, May-Jun. 1969.
"Computer Methods of Diplog Correlation," Schoonover et al., Society of Petroleum Engineers Journal, Feb. 1973.
"Schlumberger: The High Resolution Dipmeter", Technical Report, Jan. 1971.
"Dipmeter outlines Petroleum Entrapment on Flanks of Diapiric Shale Dome," Franke et al., SPWLA Fourteenth Annual Logging Symposium, May 6-9, 1973, pp. 1-19.
"Cluster-A Method for Selecting the Most Probable Dip Results from Dipmeter Surveys", Hepp et al., Society of Petroleum Engineers of AIME, Paper No. SPE 5543, 1975, pp. 1-16.

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