×

Controller for well installations

  • US 4,916,617 A
  • Filed: 01/20/1988
  • Issued: 04/10/1990
  • Est. Priority Date: 01/20/1988
  • Status: Expired due to Term
First Claim
Patent Images

1. A controller for use in conjunction with the control of well installations wherein control components regulating the production of fluid hydrocarbons are selectively actuated in response to control inputs and wherein monitoring devices provide inputs representing operational parameters of said installations, comprising:

  • input means responsive to said operational parameter inputs for providing parameter state conditions;

    communicators means for providing selectable parameter control conditions;

    output means responsive to output control signals for deriving said control inputs;

    memory means for retaining a predetermined sequence of values for control state variables, groupings of mask variable selection sequences, pattern control conditions and response data corresponding with said parameter control conditions; and

    processor means;

    responsive to said parameter state conditions and said parameter control conditions for generating said control state variable values for retention by said memory means,responsive to said control state variable and said mask variable selection sequences to derive corresponding sequences of masked control state variable values,responsive to compare said masked control state variable values with said pattern control conditions and, in the presence of correspondence therebetween, to access said response data; and

    responsive to said accessed response data to derive said output control signals.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×