Bit-to-bend motor drills Eagle Ford wells in single runs

Posted on 02 July 2014

Baker Hughes used its new 6 3/4-in. Navi-Drill Ultra Curve motor with a 4 ½-ft bit-to-bend length to drill the vertical, curve and lateral sections of three wells in the Eagle Ford basin of South Texas each in a single run. Eliminating the need to trip out of hole at the kickoff point for a new curve assembly saved the operator an average of three days of drilling time per well.

The operator wanted to see an improvement in drilling efficiency over what was being experienced in comparable wells. Previously drilled wells averaged 15 drilling days from spud to TD. In addition, the rate of penetration (ROP) in the curve section was severely impacted by additional sliding time and the need to trip out of hole to change motor assemblies.

The operator’s challenge was to drill the 8 ½-in. hole section, which consisted of vertical, curve (planned with an 8°/100 ft [30.5 m] buildup rate) and lateral sections averaging 9,200 ft (2,804 m) per well.

“The Navi-Drill Ultra Curve motor is able to maintain a constant tool face while drilling the curve, resulting in more consistent buildup rates and improved ROP while sliding,” Azar Azizov, Product Manager of Baker Hughes Drilling Motors, said. “The short bit-to-bend length of this motor allowed for increased ROP in the curve section by 48% due to a reduction in sliding time. In addition, ROP in the lateral section was increased by 15% due to higher rotational limits of the assembly.”

Navi-Drill Ultra is a trademark of Baker Hughes.

Leave a Reply

*

FEATURED MICROSITES


Recent Drilling News

  • 26 November 2014

    US EIA: Increase in energy demand requires 33 million bbl/day more oil

    The world is going to need one-third more oil between 2010 and 2040, with developing countries, such as China and India, accounting for a major portion in the increase in...

  • 25 November 2014

    Prescriptive Analytics prescribes how to complete wells to maximize production

    "Big data" is taking on a new role in industry, where companies are combining the findings from geology and geophysics with new data collected from advanced technologies...

  • 25 November 2014

    Petrobras completes drilling first appraisal well in Libra Consortium

    Petrobras recently completed drilling the first appraisal well in the Libra area, the 3-BRSA-1255 (3-RJS-731), known as NW1. Located in the Northwest portion of the Libra block, in the pre-salt layer of the...

  • 24 November 2014

    Ensign secures contracts for 2 ADR 1500S pad drill rigs in Montney area

    Ensign Energy Services has signed contracts for two of its new ADR 1500S pad drill rigs for a major operator in the Montney area of northeast British Columbia...

  • 21 November 2014

    Statoil cancels Stena Carron rig contract offshore Angola

    Statoil has decided to cancel the Stena Carron rig contract after fulfilling the work commitments in the Statoil-operated blocks 38 and 39 in the Kwanza basin offshore Angola...

  • Read more news