Presentation on theme: "Oil Field Manager ~ Presentation"— Presentation transcript:
1 Oil Field Manager ~ Presentation OFM helps engineers manage more wells effectively in less time17 April 2017
2 Data Organisation in 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).OFMAccessDBExternal Database
3 Data Input Levels in OFM FieldMaster 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).WellboreCompletionCompletion
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 gasUndrained zones?Potential for new wells?Stimulation opportunities?
25 Production Heterogeneity Index Heterogeneity indexing is -Comparing individual wells to the average of a well groupA fast way to identify over- and underperforming wells, best completion practices etc.
27 Re - perforation Analysis Due to different perforation techniques, some wells experienced problemsUnderbalanced perforating (through tubing) may not have achieved full penetrationCumulative liquid produced per perf foot is a technique to evaluate perforation productivityGrid map/bubble map results
28 Damage Indicator Formation damage analysis Simple damage analysis Formation Damage Index (FDI)Grid mapPressure transient is preferred for calculating skinTreatment = acidize well to remove damageThe numerator is the ability of well to produce. The denominator is the storage capacity of reservoir to deliver. If a well has formation damage problems, then it will produce at a low rate even though the formation has a high storage capacity to deliver. Hence the formation damage index will be a low value.
29 Decline Curve Analyses Equations Exponential Decline Conversions (where b = 0)Hyperbolic Decline Conversions (where 0 < b < 1)Harmonic Decline Conversions (where b = 1)
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 conditionsAssume uniform pressure reservoirVolumetric methodDrainage radius for Np and EURAdditional variable can be displayed with drainage radius to provide insight of reservoir performanceThis assumption is quite valid during the early day of production. At this point in time, Bfield has been produced for 2 years. Since the wells is less likely to interfere each other in this early production life, infinite acting model is acceptable.
33 Volumetric Drainage Radius Example Undeveloped spotsDrainage Radius at NpDrainage Radius at EUR