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Oil Field Manager ~ Presentation

Oil Field Manager ~ Presentation. OFM helps engineers manage more wells effectively in less time. 6 June 2014. Data Organisation in OFM. OFM. All data stored in relational database. Since OFM 2000, OFM uses Microsoft Access for data storage. Links to other databases possible via ODBC:

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Oil Field Manager ~ Presentation

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  1. Oil Field Manager ~ Presentation OFM helps engineers manage more wells effectively in less time 6 June 2014

  2. Data Organisation in OFM OFM • All data stored in relational database. • Since OFM 2000, OFM uses Microsoft Access for data storage. • Links to other databases possible via ODBC: • Permanent download to Access. • Live link to external database (no data duplication). Access DB External Database

  3. Data Input Levels in OFM Field Wellbore • Master Table is used to set the project key. • Corresponds to the lowest level at which data is available (usually either Completion or Wellbore). • Other well information may be included (well co-ordinates etc). Completion Completion

  4. BaseMap

  5. Base Map

  6. Filtering Capabilities In OFM

  7. Sample Production Plots

  8. Sample Production Plots

  9. Sample Production Plots

  10. Basic Production Plot • Productivity decrease drastically as soon as the water hit the well: • AL?, Emulsion problems? Scale? Fines migration?

  11. DCA in OFM

  12. Bubble Maps In OFM ~ Monthly Production

  13. Sample Bubble Maps

  14. Sample Bubble Maps

  15. Sample Bubble Maps

  16. Sample Bubble Maps Lesson 3.4

  17. Sample Bubble Maps Sample Bubble Maps

  18. Sample Bubble Maps

  19. Sample Bubble Maps

  20. f - gridmap A * h ( ) * ( gridmap ) * ( 1 Swi )( gridmap ) = N Boi OOIP and grid map in OFM • OFM can calculate the original-oil/gas-in-place for reservoirs. This technique uses the volumetric equation and grid arithmetic.  

  21. OOIP and grid map in OFM

  22. OOIP and grid map in OFM * * = Boi

  23. Normalized Mapping – (OOIP-Np) Map Area of low recovery efficiency – workover potential exist? Area of over recovery efficiency – Potential additional pay presents ?

  24. Basic Production Maps Best gas well • Zones with very low recovery of gas • Undrained zones? • Potential for new wells? • Stimulation opportunities?

  25. Production Heterogeneity Index • Heterogeneity indexing is - • Comparing individual wells to the average of a well group • A fast way to identify over- and underperforming wells, best completion practices etc.

  26. Desired results and interpretation

  27. Due to different perforation techniques, some wells experienced problems Underbalanced perforating (through tubing) may not have achieved full penetration Cumulative liquid produced per perf foot is a technique to evaluate perforation productivity Grid map/bubble map results Re - perforation Analysis

  28. Damage Indicator • Formation damage analysis • Simple damage analysis • Formation Damage Index (FDI) • Grid map • Pressure transient is preferred for calculating skin • Treatment = acidize well to remove damage

  29. Decline Curve Analyses Equations • Exponential Decline Conversions (where b = 0) • Hyperbolic Decline Conversions (where 0 < b < 1) • Harmonic Decline Conversions (where b = 1)

  30. DCA in OFM Potential zones with high Reserves

  31. Volumetric Drainage Radius Estimation • Visual representation of the drainage area per well in the reservoir. • Areas not being drained by wells are quickly identified visually with bubble mapping

  32. Technical Discussion • Volumetric Drainage radius (rev) calculation • Literally, the volume occupied by the produced fluid at reservoir conditions • Assume uniform pressure reservoir • Volumetric method • Drainage radius for Np and EUR • Additional variable can be displayed with drainage radius to provide insight of reservoir performance

  33. Volumetric Drainage Radius Example Undeveloped spots Drainage Radius at Np Drainage Radius at EUR

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