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Well Data Management 2009 & Beyond

Well Data Management 2009 & Beyond. Part 2. Looking forward 2009 and beyond. Any plans for oil and gas data management that does not address all these 3 keys issues, Data model improvements and validation indicators is not in the best interest of the oil and gas clients.

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Well Data Management 2009 & Beyond

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  1. Well Data Management 2009 & Beyond Part 2

  2. Looking forward 2009 and beyond Any plans for oil and gas data management that does not address all these 3 keys issues, Data model improvements and validation indicators is not in the best interest of the oil and gas clients. J. Stolle We as an industry need an improved plan. 2 11/13/2014

  3. Wellpaths – are they spatially correct? • Directional surveys may be perfectly correct • but are adversely affected by: • Surface location problems -start in the wrong place, • the whole wellpath is wrong • Well reference elevation problems – Data is • referenced to KB height ( MSL-KB) • Well total depth value problems affect BH Location. 3 11/13/2014

  4. What attributes would provide more confidence to the data user? • How about well surface locations? How a location was determined • ( from section corner, from monument, etc.) gives no indication of its ‘goodness’ • Is the well location a ‘Permitted’, ‘Amended’, or an ‘As-Drilled’ location? • Can these 3 qualifiers be further validated? (historical wells only) • ‘VV’- Visually verified on digital orthophotography • ‘VV-OF’ –On facilities • ‘VV-NF’ -Near facilities • ‘NO’ No evidence of well location or facilities 4 11/13/2014

  5. Documenting monument location calls in NWH and resolving location problems This is a ‘Permitted’ well location Tobin’s original well location Also validated as ‘VV-OF’ .650277 degree Likely well location 13790 327.433333 ( Not Spec.) Wells located from monuments suffer from inadequate location call metadata and as a result incorrect location calculation 13789’ @ 326.7830556 (GRID)

  6. While just ‘Permitted’ -also visually validated ‘Permitted’ location plat with unspecified or unrecognized North reference in Monument to well description. Red is old location. Red line is well to monument direction based on assumption description was relative to Grid North Yellow is corrected location (+/- 180’ shift) Green line here is corrected well location to monument direction assuming initial direction was referenced to True North. VV-OF 6 11/13/2014

  7. Color scheme same as on previous slides. Table to left gives an idea about number of wells that had to be corrected for True North referenced location plats – in this case a correction of 236’+/- Indicates DOQQ or VV-OF also used to validate

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