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Evolution of the Williston Basin Drilling Pad ;

Evolution of the Williston Basin Drilling Pad ;. Drilling Pad. What affects a drilling pad Types of pads in North Dakota Advances in pad construction. What affects a drilling pad. Placement Geology Unit spacing Topography Protected Easements Road infrastructure

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Evolution of the Williston Basin Drilling Pad ;

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  1. Evolution of the Williston Basin Drilling Pad;

  2. Drilling Pad • What affects a drilling pad • Types of pads in North Dakota • Advances in pad construction

  3. What affects a drilling pad • Placement • Geology • Unit spacing • Topography • Protected Easements • Road infrastructure • Gathering infrastructure • Flood potential • Erosion control • City / county / state regulation • Size • Rig foot print • Numberof wells • Battery size • Flare orientation • Panic line distance • Topography • Necessary Frac crew space • Solids control plan • Construction • Soil Moisture • Number of wells on pad (Traffic Volume) • Weather • Seasonal consideration of operations

  4. Prehistoric Drilling Pad(pre 2000’s - 2011) • A thing of the PAST

  5. Single Well Pad • Purpose: HBP and Test a spacing unit • Size: 300’x500’

  6. Dual Well Pad • Purpose: Develop a single 1280 and minimize impact • Allows for full development with only 4 locations • Size: 300’x550’

  7. Three Well Pad • Purpose: Develop a full 2560 acre spacing unit and minimize impact of foot print • Size: 395’x550’

  8. Eco Pad • Four Wells • Purpose: Develop a full 2560 acre spacing unit & minimize foot print • Size: 395’x550’ • SIMULTANEOUS OPERATIONS Four Well Eco Pad: 550’x700’

  9. Eco Well Pad

  10. Cyclone # 28

  11. Multi Well Pad • Purpose: • Meet requirements for multiple wells • Minimize impact • Overcome rough terrain, & access issues (water) • Size: 6 - 14 Wells 550 x 750

  12. Multi Well Pad

  13. Cyclone #2 Total Footage: 79,521’ @ Day 80

  14. Lifecycle of Drilling Pads • Scoria – 2 yrs. – Avg. maintenance $5-7K / yr. • Gravel – 5 yrs. – Avg. maintenance $2-4K / yr. • Textile Reinforced – 7 – Avg. maintenance $1.5-3K / yr. • Cement Stabilized – 10 – Avg. maintenance $500-2000 / yr.

  15. Materials to Extend Lifecycle of Pads • 2 ply wood mats: wood mats interlocking form surface on location • Composite mats: Composite mat systems form surface on location • Reinforced Geotextiles: High strength fabrics for separation & reinforcement of soil and aggregate • Geo Cell System: Plastic 3-D soil confinement system • Cement Stabilization: Blending cement with native soil to create a more durable surface.

  16. 2-Ply Wood Mats - OK • Advantages: • Less expensive • Available • Disadvantages: • Absorb Liquid • Damage Easily • Slip & trip hazard when wet • Cost • $2.50 / sq. yd.

  17. Composite Mats - Good • Advantages: • Light weight, easy to move • More durable • Low or no work over pad cost when placed over surfacing • Minimize days to sales • Disadvantages: • Leasing - Mats not for sale • Time to place on location • High demand • Cost • $5.00 / sq. yd.

  18. Geotextiles - Good • Advantages • One size fits all solution • Deployed quickly • Disadvantages • Not easily removed • Difficult to “repair” • Life and stability of material is dependant upon load size, traffic, water • Cost • $4.00 – 7.00 / sq. yd.

  19. Geo Cell System - Better • Advantages • Reduce vertical and lateral movement • Less surface material required • Product life estimated 25 years • Can be placed in low temps where cement cannot • Disadvantages • Labor intensive to place • Cost • $7.50 – 10.00 / sq. yd.

  20. Cement Stabilization - Best • Advantages • Reduces Trucking Impacts – Less surfacing material • Harder sub-grade • Lower maintenance • Disadvantages • Must be placed in temps above 40°F • Time for shipping and coordinating product • Preplanning of battery, electrical, flow lines, etc. • Cost • $7.50 – 10.00 / sq. yd.

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