Boots – shoes – and leggings
Patent
1990-03-07
1992-07-21
Macdonald, Allen R.
Boots, shoes, and leggings
166 53, G06F 1520, E21B 3416
Patent
active
051329042
ABSTRACT:
A gas and oil well controller includes a microcomputer control circuit which can control well production by monitoring well pressure levels, by time limitations, or any combination of the two. The controller includes a casing pressure sensor, a tubing pressure sensor for sensing casing/tubing differential pressure and tubing/line differential (flow) pressure, a line pressure sensor for sensing pressure in the sales line, and a plunger position sensor for sensing the position of a plunger adjacent a top position in the well tubing. The microcomputer control circuit is in operative communication with the production valve, the casing pressure sensor, the tubing pressure sensor, the line pressure sensor, and the plunger to open and close the production valve for gas flow to the sales line when the casing, tubing, and line pressures bear a predetermined relationship to preselected pressure limits or when the plunger is sensed by the plunger sensor. The controller includes serial and parallel communication ports through which all communications to and from the controller pass. Any hand held device or portable computer capable of serial communication may access the controller. A telephone modem or telemetry link to a central "host" computer may be used to permit several controllers to be accessed remotely. Security and individual controller selection is provided by a specfic password code to prevent unauthorized access to the controller.
REFERENCES:
patent: 3921152 (1975-11-01), Hagar et al.
patent: 4150721 (1979-04-01), Norwood
patent: 4432064 (1984-02-01), Barker
patent: 4573115 (1976-02-01), Halgrimson
patent: 4633954 (1987-01-01), Dixon et al.
patent: 4636934 (1987-01-01), Schwendemann et al.
patent: 4685522 (1987-08-01), Dixon et al.
patent: 4747060 (1988-06-01), Sears, III et al.
patent: 4751648 (1988-06-01), Sears, III et al.
patent: 4895533 (1990-01-01), Yau et al.
patent: 4989671 (1991-02-01), Lamp
Matsubara et al. "EEPROM On-Chip Single Chip Microcomputer"; Hitachi Review vol. 35 No. 5 Oct. 1986, pp. 237-240.
Lofthus, "TMS 9940 High Performance Microcomputer", Midcon 1979 Conference Record Chicago, Ill. Nov. 6-8, 1979 vol. 3.
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