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26 MAY 2010
© 2009 Baker Hughes Incorporated. All Rights Reserved.
Reevaluation and
extended exploitation of
old wells
Fab...
© 2009 Baker Hughes Incorporated. All Rights Reserved.2
Mature fields and old wells
• Often exploited only after old conce...
© 2009 Baker Hughes Incorporated. All Rights Reserved.3
Reserves delineation
How the reserves are defined
• Mckelvey diagr...
© 2009 Baker Hughes Incorporated. All Rights Reserved.4
Reserves delineation
• Mckelvey diagram
I D E N T I F I E D U N D ...
© 2009 Baker Hughes Incorporated. All Rights Reserved.5
Reserves delineation
• Mckelvey diagram
I D E N T I F I E D U N D ...
© 2009 Baker Hughes Incorporated. All Rights Reserved.6
Increase and add new reserves
© 2009 Baker Hughes Incorporated. All Rights Reserved.7
Identified New Reserves U N D I S C O V E R E D
Economic
Sub
econo...
© 2009 Baker Hughes Incorporated. All Rights Reserved.8
Increase identified reserves
• Previous discarded
– Bypassed level...
© 2009 Baker Hughes Incorporated. All Rights Reserved.9
Bronwfield & old wells: change the scenario
Brownfield:Brownfield:...
© 2009 Baker Hughes Incorporated. All Rights Reserved.10
Bronwfield & old wells: change the scenario
Brownfield:Brownfield...
© 2009 Baker Hughes Incorporated. All Rights Reserved.11
Bronwfield & old wells: change the scenario
Brownfield:Brownfield...
© 2009 Baker Hughes Incorporated. All Rights Reserved.12
Looking old wells with a new eye
1. Lets Consider an old well as ...
© 2009 Baker Hughes Incorporated. All Rights Reserved.13
Increase economic reserves
© 2009 Baker Hughes Incorporated. All Rights Reserved.14
Increase Economic area
I D E N T I F I E D U N D I S C O V E R E ...
© 2009 Baker Hughes Incorporated. All Rights Reserved.15
Looking old wells with a new eye
1. Lets Consider an old well as ...
© 2009 Baker Hughes Incorporated. All Rights Reserved.16
Some “probe” exploitations
© 2009 Baker Hughes Incorporated. All Rights Reserved.17
Improve geophysical knowledge: VSP
© 2009 Baker Hughes Incorporated. All Rights Reserved.18
Improve geophysical knowledge: VSP
•AVOAVO investigation using wa...
© 2009 Baker Hughes Incorporated. All Rights Reserved.19
Improve seismic interpretation
• Well seismic survey
– Improve th...
© 2009 Baker Hughes Incorporated. All Rights Reserved.20
Find additional pay
• By passed drilled levels
– Multilevel reser...
© 2009 Baker Hughes Incorporated. All Rights Reserved.21
Recognize by passed oil-gas levels
• Understand your reservoir an...
© 2009 Baker Hughes Incorporated. All Rights Reserved.22
•SituationSituation
Operator of a mature
field and multilayers
pa...
© 2009 Baker Hughes Incorporated. All Rights Reserved.23
Saturation Measurements in Complex Completions
RPM (Reservoir Per...
© 2009 Baker Hughes Incorporated. All Rights Reserved.
gas
PNC data
OH data
Expansion of gas cap
Gas, Oil, Water
RPM Case ...
© 2009 Baker Hughes Incorporated. All Rights Reserved.25
Workover in double completion
© 2009 Baker Hughes Incorporated. All Rights Reserved.26
Completion issue
New
level
© 2009 Baker Hughes Incorporated. All Rights Reserved.27
Orienting perforation
• Dual tubing completion
EMO – Electro-Magn...
© 2009 Baker Hughes Incorporated. All Rights Reserved.28
Conclusion
• Enlarge economic reserves
1. Increasing and improvin...
© 2009 Baker Hughes Incorporated. All Rights Reserved.29
I D E N T I F I E D
U N D I S C O V E R E D
Economic
Sub
economic...
© 2009 Baker Hughes Incorporated. All Rights Reserved.30
Summary
• Increase economic reserves
– Better and improved knowle...
11/06/16
© 2009 Baker Hughes Incorporated. All Rights Reserved.
Thanks for your attention
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Spe sibiu-2010 reevaluation and extended exploitation of old wells

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Brownfields: reevaluation and extended exploitation of old wells
Enlarge economic reserves by:
Increasing and improving our knowledge at field scale
Increasing and improving our knowledge at well scale
Doing smart workover of existing wells

Published in: Engineering
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Spe sibiu-2010 reevaluation and extended exploitation of old wells

  1. 1. 26 MAY 2010 © 2009 Baker Hughes Incorporated. All Rights Reserved. Reevaluation and extended exploitation of old wells Fabio Brambilla
  2. 2. © 2009 Baker Hughes Incorporated. All Rights Reserved.2 Mature fields and old wells • Often exploited only after old conceptual plays • Characterized by : – Vintage seismic – Geological knowledge not revised – Pay zones definition not reevaluated – Completion & Production aged practice
  3. 3. © 2009 Baker Hughes Incorporated. All Rights Reserved.3 Reserves delineation How the reserves are defined • Mckelvey diagram I D E N T I F I E D U N D I S C O V E R E D Economic Sub economic
  4. 4. © 2009 Baker Hughes Incorporated. All Rights Reserved.4 Reserves delineation • Mckelvey diagram I D E N T I F I E D U N D I S C O V E R E D Economic Sub economic $ € Completion Drilling EOR
  5. 5. © 2009 Baker Hughes Incorporated. All Rights Reserved.5 Reserves delineation • Mckelvey diagram I D E N T I F I E D U N D I S C O V E R E D Economic Sub economic Geological Geophysical Reservoir Knowledge
  6. 6. © 2009 Baker Hughes Incorporated. All Rights Reserved.6 Increase and add new reserves
  7. 7. © 2009 Baker Hughes Incorporated. All Rights Reserved.7 Identified New Reserves U N D I S C O V E R E D Economic Sub economic Geological Geophysical Reservoir Knowledge $ € Completion Drilling EOR I D E N T I F I E D
  8. 8. © 2009 Baker Hughes Incorporated. All Rights Reserved.8 Increase identified reserves • Previous discarded – Bypassed levels – Not thick enough – Looking for oil (not gas!) • Not recognized levels – Advancement on geophysical survey – New petrophysical concepts – New Formation evaluation capabilities
  9. 9. © 2009 Baker Hughes Incorporated. All Rights Reserved.9 Bronwfield & old wells: change the scenario Brownfield:Brownfield: landscapelandscape of wells andof wells and pumpspumps Where yourWhere your cash comescash comes
  10. 10. © 2009 Baker Hughes Incorporated. All Rights Reserved.10 Bronwfield & old wells: change the scenario Brownfield:Brownfield: landscapelandscape of wells andof wells and pumpspumps Is itIs it just ajust a well ?well ?
  11. 11. © 2009 Baker Hughes Incorporated. All Rights Reserved.11 Bronwfield & old wells: change the scenario Brownfield:Brownfield: landscapelandscape of wells andof wells and pumpspumps It is aIt is a probeprobe already inalready in place !place !
  12. 12. © 2009 Baker Hughes Incorporated. All Rights Reserved.12 Looking old wells with a new eye 1. Lets Consider an old well as a probe already in place
  13. 13. © 2009 Baker Hughes Incorporated. All Rights Reserved.13 Increase economic reserves
  14. 14. © 2009 Baker Hughes Incorporated. All Rights Reserved.14 Increase Economic area I D E N T I F I E D U N D I S C O V E R E D Economic Sub economic Geological Geophysical Reservoir Knowledge $ € Completion Drilling EOR
  15. 15. © 2009 Baker Hughes Incorporated. All Rights Reserved.15 Looking old wells with a new eye 1. Lets Consider an old well as a probe already in place and 2. It is already a well in your field !! Killed levels By passed level
  16. 16. © 2009 Baker Hughes Incorporated. All Rights Reserved.16 Some “probe” exploitations
  17. 17. © 2009 Baker Hughes Incorporated. All Rights Reserved.17 Improve geophysical knowledge: VSP
  18. 18. © 2009 Baker Hughes Incorporated. All Rights Reserved.18 Improve geophysical knowledge: VSP •AVOAVO investigation using walkaway VSP data •Several walkaway lines centered about the well location can be used to investigate AVAAVA effects
  19. 19. © 2009 Baker Hughes Incorporated. All Rights Reserved.19 Improve seismic interpretation • Well seismic survey – Improve the quality in reinterpretation of old seismic lines – Reduces uncertainty in surface seismic interpretation. – Enhance subsurface structural and stratigraphic details – Revealing hidden geological features
  20. 20. © 2009 Baker Hughes Incorporated. All Rights Reserved.20 Find additional pay • By passed drilled levels – Multilevel reservoirs – Single completion over 2 or more levels – Better vertical resolution • Improving knowledge of geological setting – Clastic environment – Discontinuous reservoirs
  21. 21. © 2009 Baker Hughes Incorporated. All Rights Reserved.21 Recognize by passed oil-gas levels • Understand your reservoir and identify new opportunity – Formation Evaluation in cased hole conditions • Pulsed Neutron and Carbon/Oxygen logs (RPM) – Reevaluation of volumes of oil & gas in place – Identification of new reserves increasing the field life – Better delineation of pay bodies – Identification of actual water tables for planning infilling-lateral holes • Tubing does not have to be pulled, rigless operations • Well is not required to be off production
  22. 22. © 2009 Baker Hughes Incorporated. All Rights Reserved.22 •SituationSituation Operator of a mature field and multilayers pays is looking for production opportunities •ObjectiveObjective Identify production opportunities in complex completions. • ComplicationComplication Complex completions including blast joints trap oil, gas, and water in the annulus. •SituationSituation Operator of a mature field and multilayers pays is looking for production opportunities •ObjectiveObjective Identify production opportunities in complex completions. • ComplicationComplication Complex completions including blast joints trap oil, gas, and water in the annulus. Saturation Measurements in Complex Completions RPM (Reservoir Performance Monitor)
  23. 23. © 2009 Baker Hughes Incorporated. All Rights Reserved.23 Saturation Measurements in Complex Completions RPM (Reservoir Performance Monitor) •Solution •RPM-CO log was run and processed using Dynamic Response Generator to account for annular fluids procedure. •Results identified production opportunities that upon re-completion produced oil. •Solution •RPM-CO log was run and processed using Dynamic Response Generator to account for annular fluids procedure. •Results identified production opportunities that upon re-completion produced oil.
  24. 24. © 2009 Baker Hughes Incorporated. All Rights Reserved. gas PNC data OH data Expansion of gas cap Gas, Oil, Water RPM Case Histories
  25. 25. © 2009 Baker Hughes Incorporated. All Rights Reserved.25 Workover in double completion
  26. 26. © 2009 Baker Hughes Incorporated. All Rights Reserved.26 Completion issue New level
  27. 27. © 2009 Baker Hughes Incorporated. All Rights Reserved.27 Orienting perforation • Dual tubing completion EMO – Electro-Magnetic Orienting Perforating • Oriented perforating in the direction opposite the lower interval production string (long string) is accomplished with through-tubing perforating using the EMO system. • Using the properties of electro-magnetism to detect the mass of the long string and • incorporating a rugged downhole motor and anchor, the perforating guns can be selectively rotated to a position to fire opposite the long string.
  28. 28. © 2009 Baker Hughes Incorporated. All Rights Reserved.28 Conclusion • Enlarge economic reserves 1. Increasing and improving our knowledge at field scale 2. Increasing and improving our knowledge at well scale 3. Smart workover of existing wells GeophysicalGeophysical FormationFormation evaluationevaluation CompletionCompletion WellWell managementmanagement
  29. 29. © 2009 Baker Hughes Incorporated. All Rights Reserved.29 I D E N T I F I E D U N D I S C O V E R E D Economic Sub economic $ € Completion Drilling EOR G eological G eophysical Reservoir Knowledge 1 + 2 + 3 1111 2222 3333
  30. 30. © 2009 Baker Hughes Incorporated. All Rights Reserved.30 Summary • Increase economic reserves – Better and improved knowledge – Smart workover of existing wells • Exploitation of new E&D techniques – Geophysical data – New Formation evaluation solutions – Revising the status of each wells
  31. 31. 11/06/16 © 2009 Baker Hughes Incorporated. All Rights Reserved. Thanks for your attention

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