Method and apparatus for generating a display of well logging me

Details Method and apparatus for generating a display of well logging me Method and apparatus for generating a display of well logging me

1984-09-07

1987-08-11

Smith, Jerry

Boots, shoes, and leggings

367 69, 367 71, 340853, G01V 100

Patent

active

046866256

ABSTRACT:
Initialization data independent of logging curve data values (such as grid definitions and starting depths) are transmitted to a remote terminal where well log curve displays are desired. Data corresponding to magnitudes of successive adjacent points on the curves are then sequentially transmitted as delta values. Each delta value is the difference in magnitude between two adjacent sample points on a given curve. Transmission of redundant and unnecessary information such as integer values of curve samples is thereby eliminated. Large amounts of well log data may then be transferred quickly to remote locations at low data transmission rates associated with conventional telephonic communication links. Cumulative error resulting from reconstructing curve sample magnitudes from delta values is eliminated by a bi-directional transmission error checking scheme.

REFERENCES:
patent: 3388375 (1968-01-01), Sloughter
patent: 3599156 (1971-08-01), Miller et al.
patent: 3787666 (1974-01-01), Schumann et al.
patent: 3986163 (1976-10-01), Elliott
patent: 4010476 (1977-03-01), Elliott
patent: 4297879 (1981-11-01), Howells et al.
patent: 4352166 (1982-09-01), Schoonover
patent: 4355310 (1982-10-01), Belaigues et al.
patent: 4509150 (1985-04-01), Davis
"Data Communications A Users Guide", Sherman, K., Reston Publishing Co., 1981, pp. 175-181.

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