초록 ▼

A downhole production well control system is provided for automatically controlling downhole tools in response to sensed selected downhole parameters. The production well having a production tubing string therein with multiple branches, i.e., zones, each including a downhole control system. Each con

A downhole production well control system is provided for automatically controlling downhole tools in response to sensed selected downhole parameters. The production well having a production tubing string therein with multiple branches, i.e., zones, each including a downhole control system. Each control system includes electromechanical drivers and devices to control fluid flow. The downhole control systems collect and analyze data from multiple sensors to determine what (if any) actions should be taken in response to sensor stimuli. The actions taken will be based on rules, learned behavior and input from downhole external sources. Well operation and downhole tool models are embedded in the control computer, as are methods to evaluate the models to determine the present and future optimum operating conditions for the well. This network of intelligent control systems in a borehole has to interact to determine the optimum production parameters for the entire borehole; not just a single zone. Production parameters that may create an ideal production rate for one zone may have an adverse effect on the other zones.

대표청구항 ▼

[ What is claimed is:] [1.] A downhole computer-based method of controlling a well, comprising:receiving input from at least one sensor permanently located downhole in the well;analyzing the input using a permanent downhole controller using at least one internal process model; andgenerating output t

[ What is claimed is:] [1.] A downhole computer-based method of controlling a well, comprising:receiving input from at least one sensor permanently located downhole in the well;analyzing the input using a permanent downhole controller using at least one internal process model; andgenerating output to make changes in at least one downhole tool operating variable as suggested by said at least one internal model.