Well logging data acquisition, telemetry and control method and

Details Well logging data acquisition, telemetry and control method and Well logging data acquisition, telemetry and control method and

1986-11-24

1988-01-05

Moskowitz, Nelson

Boots, shoes, and leggings

367 25, 34082554, G01V 140

Patent

active

047180110

ABSTRACT:
A downhole microprocessor controller disposed in a well logging sonde receives and stores one or more preselected tables or series of logging tool commands down loaded from a surface computer through a logging cable telemetry link. Each tool command in a particular table may correspond to a specific function to be performed by a respective logging tool comprising the sonde. All such commands in a given table may be called up by the controller from memory in response to a corresponding sequence command from the surface computer corresponding with the desired table. Upon receipt of such a sequence command, the microprocessor sequentially recalls each of the table's tool commands and relays them in order to the tools. Each command has an address field and a command field, and each tool has a universal interface which decodes the fields whereby a particular tool may be selected by the address field and preselected functions from a plurality thereof may be performed by the tool in accordance with the command field word. The number of tools activated, the order in which they are activated, the order in which functions are performed by a particular tool, and the number thereof are selectively variable and controllable by the software tables selected from the surface sequence commands.

REFERENCES:
patent: 4216536 (1986-08-01), More
patent: 4227405 (1980-10-01), West
patent: 4307265 (1981-12-01), Hagen et al.
patent: 4350979 (1982-09-01), Eberwein
patent: 4355310 (1982-10-01), Belaigues et al.
patent: 4415895 (1983-11-01), Flagg
"Bidirectional Telemetry for Downhole Well Logging", Matthews, Petroleum Engineer, Sep. 1977.
"Applications and Uses of Microprocessors in Wireline Logging", Taylor et al, Petroleum Times, Jan. 1982, pp. 10-17.

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