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Special Focus

  • Advanced and emerging drillstring technologies overcome operational challenges

    R. B. Chandler, M. Jellison, M. Payne and J. Shepard

    An integrated approach is needed for successful exploration.New materials and designs are expected to increase depth capability for continued deep drilling advancement in the US and throughout the world.

  • Curmudgeonly comments

    L. Robinson
    Based on experience gained in a long career, the author presents his favorite five gripes about the accuracy of technical information, as he makes his plea for more professionalism in drilling.
  • Estimating Sw with a volume measurement

    R. Griffiths, A. Carnegie, A. Gyllensten, M. Ribeiro, A. Prasodjo and Y. Sallam

    Using the latest approach to saturation evaluation, recent field examples have shown more hydrocarbons than indicated by resistivity or pressure gradient methods.

  • US mid-continent operator tests deep Oklahoma potential

    K. Bennett, J. Heimer and D. Seagrest

    In a bid to re-open the Devonian Hunton formation, operator GHK used customized tools to re-enter an ultra-deep gas discovery and finish it as an HPHT completion.



News & Resources

  • Companies in the news

    Acquisitions, mergers, ventures and other company news
  • Industry at a glance

    World oil supply fell 400,000 bpd in August to 85.8 million bpd

  • New products

    New product and service offerings from company press releases.

  • People in industry


    Personnel changes and promotions in the petroleum industry
  • World of Oil

    Kurt S. Abraham, Managing/International Editor

    International news in the oil and gas industry.

Special Report



Engineering Data Tables

World Oil's specialized upstream Engineering Data Tables featuring the Drill Bit Classifier, Tubing Tables and more. Get Total Access today.


2013 Fracturing Technology

2013 Fracturing Technology


By Digital Publisher

Drill Bit Classifier World Oil published its renowned Drill Bit Classifier in September 2013. The Drill Bit Classifier is a comprehensive listing of major manufacturers' d...