Page 1
Res A
Performed By
Gemini Solutions, Inc.
May 2001
Page 2
Res A
Tasks:
Create full field model History match recorded production and pressures Predict future production for current well
Page 3
Res A Area Modeled
Page 4
Res A 37Top of Structure - Section Modeled
Page 5
Res A 37Gross Sand Thickness and Model Grid – aquifer excluded
Page 6
Ternary Diagram - gas and water8 Layer Model
Page 8
History Match
Assumptions:
Infinite high permeability aquifer down dip
Original oil in place adjusted up to 11.1 MMBO
Original Free Gas in Place = 12 BCF
Adjusted oil zone porosity from 30% to 35%
Page 9
Vertical Fluid MovementTime Across and Cross Section Down – X direction, on strike
Page 10
Vertical Fluid Movement
Downdip to Updip – Y direction
Page 11
Vertical Fluid MovementThrough producing well – X direction, on strike
Page 12
Vertical Fluid MovementThrough Producing Well – Updip to Downdip
Page 13
Contour Map Layer 1 – Gas CapOil movement into gas cap
Page 14
Contour Map Layer 2 – Gas CapOil movement into gas cap
Page 15
Contour Map Layer 3 – Oil ZoneWater movement into oil zone
Page 16
Contour Map Layer 4 – Oil ZoneWater movement into oil zone
Page 17
Contour Map Layer 5 – Oil ZoneWater movement into oil zone
Page 18
Contour Map Layer 6 – Oil ZoneWater movement into oil zone
Page 19
Contour Map Layer 7 – Oil ZoneWater movement into oil zone
Page 20
Res A 37 Predictive Run Remaining oil reserves:
700 MMBO for 1000 psi flowing bottom hole abandonment
Page 21
Res A 37 – Yearly Production
Page 22
Res A 37 Conclusions
700 MMBO reserves 1000 psi flowing bottom hole abandonment
39% ultimate oil recovery factor with current well
Bypassed reserves may exist • significant oil volume may have moved to the gas cap
Quick study possible• < 2 man days
Page 23
Res A 37
Recommendations:
Improve water/gas history match further
Explore additional wells to recover bypassed oil in gas cap
Explore possibility that oil in place is higher ( especially in southwest quadrant ) history match would still be possible gas and water match could be improved further new drilling location may be possible