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Reservoir and Stimulation Break-Out Session

Reservoir and Stimulation Break-Out Session. Gas Well Deliquification Conference Efren Munoz Denver, 25-Feb-14. Topics Covered. Input data review Specific Nodal Analysis applications Production drawdown management. Input Data Review. Pr (from DFIT tests) DFIT answer 3 questions:

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Reservoir and Stimulation Break-Out Session

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  1. Reservoir and StimulationBreak-Out Session Gas Well Deliquification Conference Efren Munoz Denver, 25-Feb-14

  2. Topics Covered • Input data review • Specific Nodal Analysis applications • Production drawdown management

  3. Input Data Review • Pr (from DFIT tests) • DFIT answer 3 questions: • Fracture Gradient (can we frac?) • Pore pressure of the system (idea of Pr) • Permeability (idea of K.h) • VFC (from FGS) • Helps to tune the “vertical flow correlation” (VFC) • Once the VFC is established, it is used to calculate BHFP based on WHFP • This is a continuous effort as the VFC changes as the reservoir pressure declines

  4. Specific Applications of Nodal Analysis • Flowline modeling to identify restriction due to scale deposits • Just define a nodal model that consists only of a flow line, with a source and a “solution node”, define a “horizontal well correlation”, provided that initial and final pressures are known, run a sensitivity to ID until it matches the pressure drop. • Groups of wells represented by a P vs. Q relationship • A flow station or a manifold may be represented as a “super well” by an “IPR” curve built using actual data WHFP (psia) Rate (blpd)

  5. Production drawdown management • Typical nodal sensitivity analysis by reducing production choke size and re-calculating production rates and pressures (upstream and downstream the choke). Then monitor the drawdown (difference between THFP and Pdownstream the choke). • Promised to show some actual data of COP experience managing production drawdown in Eagle Ford for 2015 GWD.

  6. Attendees • John Bowman • BerendBrasjen • Julio Cabrera • Jody Dominguez • James Donald • Ryan Frost • Sergio Gonzalez • Kade McCullough • Marisela Rojas • Omar Soto

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