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Title:
APPARATUS, SYSTEM AND METHODS FOR ALERTING OF ABNORMAL DRILLING CONDITIONS
Document Type and Number:
WIPO Patent Application WO/2015/126537
Kind Code:
A3
Abstract:
A method (100) of monitoring drilling conditions includes acquiring raw data (102) from drilling equipment and conditioning the raw data (104) to generate conditioned data. Conditioning the raw data includes removing outlier data values and/or filtering out noise. The method further includes processing the conditioned data (106) to generate output values. Processing the conditioned data includes determining a slope of a first set of data values of the conditioned data. The first set of data values correspond to a regression length of time. Processing the conditioned data further includes determining whether a difference between the slope of the first set of data values and a median slope determined over a median window of time exceeds a threshold. The method also includes generating an alarm (110) based on the output values to indicate an abnormal drilling condition.

Inventors:
HERNANDEZ CARLOS A (US)
JOHNSTON RAY E (US)
RETTEW KELLI M (US)
MATHEW JANICE S (US)
SHIPULA STEVEN J (US)
GOMEZ TONY (US)
Application Number:
PCT/US2015/011229
Publication Date:
December 03, 2015
Filing Date:
January 13, 2015
Export Citation:
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Assignee:
CHEVRON USA INC (US)
International Classes:
E21B44/00; E21B7/00
Foreign References:
US20110220410A12011-09-15
US20040124012A12004-07-01
US20030220742A12003-11-27
Other References:
ARGHAD ARNAOUT ET AL: "Drilling events detection using hybrid intelligent segmentation algorithm", HYBRID INTELLIGENT SYSTEMS (HIS), 2012 12TH INTERNATIONAL CONFERENCE ON, IEEE, 4 December 2012 (2012-12-04), pages 508 - 511, XP032315842, ISBN: 978-1-4673-5114-0, DOI: 10.1109/HIS.2012.6421386
R WONG ET AL: "Advances in Real-Time Event Detection While Drilling", 7 March 2013 (2013-03-07), XP055218411, Retrieved from the Internet [retrieved on 20151006]
ADRIAN AMBRUS ET AL: "Drilling Rig Sensor Data Validation in the Presence of Real-Time Process Variations", 2 October 2013 (2013-10-02), XP055218414, Retrieved from the Internet [retrieved on 20151006]
Attorney, Agent or Firm:
WOLDESENBET, Million (1100 Louisiana StreetSuite 400, Houston TX, US)
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