Inventors:
Dennis M. O'Neill - Easton CT
Paul C. Gingrich - Bethel CT
Peter W. Mullarkey - New Fairfield CT
Laurent Moinard - Seattle WA
Assignee:
Schlumberger Technology Corporation - New York NY
International Classification:
G01V 1100
Abstract:
A method and apparatus monitors well logging information obtained from a logging apparatus moveable in an earth borehole. In a disclosed embodiment, observers are established for determining the presence of specified characteristics of the logging information and generating observation-representative signals in response thereto. A knowledge base is provided, and contains a number of stored observations and stored situations which are linked by specified relationships, for responding to the observation-representative signals by computing and outputting an inference of a stored situation which is inferred from a stored observation corresponding to the observation-representative signals. In a disclosed embodiment, the knowledge base is responsive to observation-representative signals for establishing at least one confirming observer. The confirming observer is operative to determine the presence of further specified attributes of the logging information and to generate confirming observation-representative signals in response thereto.