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JULY 2011

Special Focus


  • Advances from seafloor to surface

    Justin Smith

    A critical, though not very glamorous, segment of the deepwater oil and gas sector is riser technology. Risers provide a vital conduit for the circulation of drilling fluids and protect the drillstring in offshore drilling operations.

  • Advantages and limitations of venturi gas lift valves

    Alcino R. Almeida

    Generally preferred to orifice valves in offshore applications, venturi valves may not be appropriate in some cases, such as where large adjustments in gas flowrate are needed within a limited injection pressure range.

  • Expandable technology gains ground as a planned-in option

    Henry Terrell

    From their beginnings as a last-resort solution for operators who would otherwise have to abandon a well, expandables are gradually gaining acceptance as a planned alternative to conventional tubing—more expensive, to be sure, but sometimes a better choice.

  • Imaging drilling hazards in a congested North Sea field using nodal ocean-bottom seismic

    Klaas Koster, Dave Monk, Arne Rokkan, Rafael Bouraly, Simon Brown, Allison Branan and Shuki Ronen

    To facilitate infill drilling at Forties field, 3D seismic data was needed to image any shallow gas accumulations, but towed streamers couldn’t acquire data beneath or near existing platforms. A nodal acquisition technology using ROV-deployed sensors filled in the blanks.

  • Regional Report: Permian Basin

    Pramod Kulkarni

    High oil prices combine with new drilling and production technologies to create yet another boom in America’s leading onshore field

  • Treatment options for reuse of frac flowback and produced water from shale

    Mark Kidder, Tor Palmgren, Adriana Ovalle and Mukesh Kapila

    Water recycling for new frac jobs or drilling operations has many benefits, including reduced environmental impact, volume of transportation and, ultimately, cost.


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2013 Fracturing Technology

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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...