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Systems and methods for an expert system for well control using Bayesian intelligence

  • US 9,202,175 B2
  • Filed: 03/14/2013
  • Issued: 12/01/2015
  • Est. Priority Date: 11/02/2012
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • one or more processors;

    a non-transitory tangible computer-readable memory, the memory comprising;

    a well control expert system executable by the one or more processors and configured to provide one or more well control recommendations based on one or more inputs, the well control expert system comprising a well control Bayesian decision network (BDN) model, the well control BDN model comprising;

    a kick indicators uncertainty node configured to receive one or more kick indicators from the one or more inputs;

    a kick verifications uncertainty node dependent on the kick indicators uncertainty node and configured to receive one or more kick verifications from the one or more inputs;

    a kick details uncertainty node dependent on the kick verifications uncertainty node and configured to receive one or more kick details from the one or more inputs;

    a circulations decision node configured to receive one or more circulations from the one or more inputs;

    a circulations consequences node dependent on the kick details uncertainty node and the circulations decision node and configured to output the one or more well control recommendations based on one or more Bayesian probabilities calculated from one or more kick details and the one or more circulations; and

    a well control practices consequences node dependent on (a) a well control scenarios uncertainty node, (b) a well control operations uncertainty node, and (c) a recommended practices decision node, the well control practices consequences node being configured to output the one or more well control recommendations based on one or more Bayesian probabilities calculated from;

    one or more well control scenarios input to the well control uncertainty node,one or more well control operations input to the well control operations uncertainty node, andone or more recommended practices input to the recommended practices decision node.

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