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Multiwell Retrospective Testing and Forecasting for Well OP1

Comprehensive analyses of pressure, productivity, and interference history for well OP1. Prediction of future productivity and assessment of formation pressure impact. Estimation of key parameters for optimization.

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Multiwell Retrospective Testing and Forecasting for Well OP1

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  1. MULTIWELL RETROSPECTIVE TESTING MRT - NDR 2018

  2. AGENDA

  3. OBJECTIVES

  4. FOCUS AREA AND WELL LOCATIONS OP5 OP4 OP3 PDG OP1 OP2

  5. PRODUCTION AND PRESSURE HISTORY OP1 OP2 OP3 OP4 OP5

  6. #1 – RECONSTRUCT FORMATION PRESSURE HISTORY FOR OP1

  7. #2 – PREDICT FORMATION PRESSURE BASED ON THE CURRENT RATE FOR OP1 Forecast OP1 OP2 OP3 OP4 OP5

  8. #3 – RECONSTRUCT PRODUCTIVITY INDEX HISTORY FOR OP1

  9. #4 – ASSESS FORMATION PRESSURE IMPACT ON IPR FOR OP1 Pr = 1,650 psi Pr = 1,600 psi Pr = 1,550 psi Pr = 1,500 psi Pr = 1,450 psi Pr = 1,400 psi Pr = 1,350 psi

  10. #5 – ESTIMATE SKIN-FACTOR, TRANSMISSIBILITY AND DRAINAGE AREA OF OP1 well OP1

  11. #6 – RECONSTRUCT THE HISTORY OF CROSS-WELL INTERFERENCE OP-2 → OP-1

  12. #7 – RECONSTRUCT THE HISTORY OF CROSS-WELL INTERFERENCE WITH OP1 Cumulative impact well OP3(-75 psi) Cumulative impact well OP2(-112 psi) Cumulative impact well OP1(-143 psi)

  13. #6 – RECONSTRUCT THE HISTORY OF CROSS-WELL INTERFERENCE WITH OP1 OP5 OP4 OP3 Ψ= 0 Ψ∑= 0 Ψ= -10 Ψ∑= -75 Ψ= 0 Ψ∑= 0 OP1 Ψ= -12 Ψ∑= -143 OP2 Ψ= -12 Ψ∑= -112

  14. #7 – ESTIMATE CROSS-WELL TRANSMISSIBILITY FROM OFFSET WELLS TOWARDS OP1 OP5 OP4 OP3 a=89,420 Apparent cross-well transmissibility 2,3 1is similar to near wellbore transmissibility of which 1 OP1 a=86,380 =88,000 OP2

  15. Thank you for attention Rushana Farakhova Technical Manager Sofoil DMCC / Maxwel rushana.farakhova@sofoil.com

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