Henry Clay Patterson

US Patent:

47180110, Jan 5, 1988

Filed:

Nov 24, 1986

Appl. No.:

6/934060

Inventors:

Henry B. Patterson - Houston TX

Assignee:

Western Atlas International, Inc. - Houston TX

International Classification:

G01V 140

US Classification:

364422

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.

US Patent:

40644081, Dec 20, 1977

Filed:

Jan 10, 1972

Appl. No.:

5/216753

Inventors:

Wai-Leung Hon - Houston TX
Henry B. Patterson - Houston TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H03K 5153

US Classification:

307351

Abstract:

The invention includes directing an analog electrical signal through a plurality of discrete time delays in order to sequentially introduce cumulative time delays to the electrical signal. The magnitudes of the electrical signal before and after the introduction of each of the time delays are compared, and a plurality of pulse signals are generated in response to the comparisons. Logic circuitry is responsive to the logic conditions of the pulse signals to generate output signals indicative of the amplitude peaks or slopes of the electrical signal.