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Horizontal Well Break Out Session

Join Rob Sutton, Dave Sask, and Gordon Gates on Feb. 24, 2015 for a discussion on EOT landing depth, lateral orientation, and salt problems in horizontal wells. Explore topics such as undulations, traps, artificial lift, and solutions to salt blockages.

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Horizontal Well Break Out Session

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Presentation Transcript

  1. Horizontal Well Break Out Session Moderators: Rob Sutton Dave Sask Gordon Gates Feb 24, 2015

  2. Discussion Points • EOT Landing Depth • Toe-up / Toe-down • Are undulations & traps okay? • Salt problems

  3. EOT Landing Depth • FlowingWell • 5-50 ft above deepest point in the curve • Fayetteville, low water rate (8-10 BWPD or less), No Pkr, mainly toe up • 75-82°, 60-75° or >82° (same), 45-60°, 30-45° & <30° (best to worst) • >15 ft TVD above deepest point in the curve (no more than 20 ft TVD) • 76° (Old UPRC paper) • Barnett (more water production) 65-75° • Tubing close to 90° may enhance loading & slugging • Need for a predictive tool

  4. EOT Landing Depth • Artificial Lift • Tend to run tubing deeper • Barnett gas lift set EOT close to top perf or near 90° • Carthage Field, James Lime gas lift 2-3/8 at 70°

  5. Lateral Orientation & Traps • General consensus for gas wells is toe up • Undulations & Traps • No difference in performance first 2 years • Problems later in well’s life (> 2 years) • Operators trying for smoother laterals

  6. Salt Problems/Solutions • Salt Problems • Examples from Marcellus, Haynesville, Woodford, Barnett, Duvernay & Jean Marie (Canada) • Problems also have been identified in lateral • Solutions • Fresh water dumped down casing can handle salt in issues in vertical wells or in heel of hz wells • Salt blockages in hz wells generally require CT invention with jetting tool

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