Multiple well tool control systems in a multi-valve well testing

Details Multiple well tool control systems in a multi-valve well testing Multiple well tool control systems in a multi-valve well testing

1989-01-11

1990-01-30

Novosad, Stephen J.

Wells

Processes

With indicating, testing, measuring or locating

166 53, 166 651, 166 664, 166 64, 166264, 166374, E21B 3408, E21B 4908, E21B 4706

Patent

active

048967220

ABSTRACT:
A multi-valve well testing system adapted to be disposed downhole in a borehole, includes a plurality of valves and a plurality of well tool control systems connected, respectively, to the plurality of valves and further includes an automatic control mode feature. The well testing system includes a controller board which comprises a microprocessor and a read only memory (ROM). The ROM has encoded therein a set of microcode which, when executed by the microprocessor, causes the various plurality of valves in the well testing system to be opened and closed automatically, without intervention from the operator at the well surface. A kickoff stimulus is required in order to begin execution of the microcode by the microprocessor. This kickoff stimulus could include a sensing, by a pressure transducer, of a predetermined bottom hole pressure, or a sensing, by a strain gauge, of a predetermined set down weight of the well testing system. As a result, in response to a predetermined kickoff stimulus, the well testing system automatically begins a test which includes the automatic opening and closing of a plurality of valves a predetermined number of times, and in a predetermined sequence.

REFERENCES:
patent: 3254531 (1966-06-01), Briggs, Jr.
patent: 3665955 (1972-05-01), Conner, Sr.
patent: 4489786 (1984-12-01), Beck
patent: 4553589 (1985-11-01), Jennings et al.
patent: 4635717 (1987-01-01), Jageler
patent: 4712613 (1987-12-01), Mieuwstad

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