Minnelusa Field Development Using 3D Seismic Data Powder River - - PowerPoint PPT Presentation

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Minnelusa Field Development Using 3D Seismic Data Powder River - - PowerPoint PPT Presentation

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Minnelusa Field Development Using 3D Seismic Data Powder River Basin, Wyoming Presentation to: Enhanced Oil Recovery Institute Minnelusa Field Trip & Workshop June 2-5, 2014 John Frederick Red Leaf Energy Benefits of Seismic in Field

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Minnelusa Field Development Using 3D Seismic Data Powder River Basin, Wyoming

Presentation to: Enhanced Oil Recovery Institute Minnelusa Field Trip & Workshop June 2-5, 2014 John Frederick Red Leaf Energy

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 2

Benefits of Seismic in Field Development

What additional information does seismic bring to field development strategy?

  • 1. Increased spatial (lateral) and temporal (vertical)

resolution of reservoir mapping

  • Area, thickness, rock volume
  • 2. Estimation of reservoir rock properties
  • 3. Seismic attribute correlation to well performance

4. Operational design of secondary recovery

  • Injector placement
  • Off-take placement
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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 3

This presentation addresses the benefit of increased spatial (lateral) and temporal (vertical) resolution using three-dimensional (3D) seismic data in Minnelusa field development. A case history of Donkey Creek North Minnelusa Oil Field, T50N-R68W, Crook County, Wyoming demonstrates that acquiring high quality 3D seismic data directly benefits strategic placement of well bores to increase oil production in both primary and secondary recovery programs.

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 4

Minnelusa Type Log

~ 300 feet

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 5

Minnelusa Trapping Styles

Frederick - 1995

Most Minnelusa accumulations are a combination of structural and stratigraphic trapping configurations.

  • Opeche shale

truncation of upper most sandstone

  • Geomorphology –

eolian sandstone deposition

  • Lateral diagenetic

facies changes

  • Structural relief

~ 300 feet

V.E. 20:1 Regional dip rate: 1-2 degrees

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 6

Critical Issues to Successfully Finding and Developing Minnelusa Oil Accumulations

  • Defining trapping configuration

– Traps not filled to spill point – Opeche shale, geomorphic, or diagenetic

  • Proper identification of seismic amplitude anomalies

– Thick Opeche shale (trap) vs. porous sand (reservoir) – Which sand – A, Upper B, B, intra-B, or C?

  • Local structural regime

– 4-way (Timber Creek) – Sand diagenesis on structural nose – Faulted (not common)

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 7

What attribute does 3D seismic data need to possess to best determine sand body vertical and horizontal extents?

Bandwidth

Bandwidth Bandwidth

  • r put another way….

High Frequency

High Frequency

High Frequency

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 8

Seismic differentiation of sands and opeche siltstone

Frederick, 1991 Frederick, 1991

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 9

Synthetic Seismic Model Based Upon Well Control

Typical Seismic Frequency Bandwidth – 12-18-60-70 Hertz

Frederick, 1991

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 10 Frederick, 1991

Synthetic Seismic Model of From Well Control

High Seismic Frequency Bandwidth – 12-18-90-110 Hertz

Frederick, 1991

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 11

Synthetic Seismic Bandwidth Comparison

12-18-60-70 HZ 12-18-90-110 HZ

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 12

Seismic differentiation of sands and opeche siltstone

Frederick, 1991 Frederick, 1991

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 13

Seismic Data - Bandwidth Comparison Industry average vs. high frequency acquisition

Frederick, 1991

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 14

Donkey Creek North Minnelusa Upper B Sand Field

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 15

Adjacent Minnelusa Oil Production

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 16

Upper B and (Lower) B Sand Trends

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 17

Minnelusa Formation Trapping Styles

Donkey Creek North Trap

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 18

Donkey Creek North - Upper B Sand Reservoir Interpretation, circa 1982

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 19

Donkey Creek North– Upper B Sand Reservoir Pre - 3D Seismic Interpretation 1992

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 20

Results of Donkey Creek North 3D Seismic Survey

Pre 3D seismic interpretation based on subsurface well control Post 3D seismic interpretation - sand does not extend eastward, but actually extends northward and wraps around dry hole

No eastward extent of Upper B sand

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 21

West - East Seismic Traverse Upper B Sand to B Sand Transition

Upper B sand B sand Depositional thinning

  • f Upper B sand
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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 22

West - East Geologic Cross Section Upper B Sand to B Sand Transition

Upper B sand depositional thinning against thick B sand body

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 23

Seismic Traverse Through Strong Amplitude Anomaly (Upper B Sand)

Upper B sand Untested – productive (?) Upper B sand

South North

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 24

Post 3D Drilling Results

Federal 34-18 and Federal 21-19

Upper B sand Post 3D seismic survey Upper B sand porosity encountered in both the 34-18 and 21-19. The 21-19 was converted to a water injector

South North

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 25

Donkey Creek North – Upper B Sand Reservoir 3D Seismic Interpretation 1994

Combined seismic and subsurface well bore interpretation Upper B sand seismic trough amplitude

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 26

Projected secondary recovery (1994) (pre-unitization)

Barrels of oil / month

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 27

Field Production – Post 3D Development

Waterflood performance forecast - 1994 Field production through March 2014

Barrels of oil / month

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 28

Summary

Spatial (lateral) and temporal (vertical) resolution provided by the acquisition of high quality (broad bandwidth, high frequency) three-dimensional (3D) seismic data in combination with wellbore rock property and production performance information contributes significantly to the economic value of both primary and secondary oil recovery in Minnelusa oil fields.

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John Frederick - Red Leaf Energy Presentation to EORI Minnelusa II Workshop June 4, 2014 29

References

Frederick, J.B., 1991. The search for subtle stratigraphic traps with high resolution seismic data: examples from the Powder River Basin, NE Wyoming, USA. Exploration Geophysics, v. 22. Australian Society of Exploration Geophysicists – 1991 annual meeting presentation. Frederick, J.B., Dean, K.T., Fryberger, S.G., Wilcox, T.D. 1995. Donkey Creek North Minnelusa 3-D: Challenging Conventional Wisdom. RMAG High Definition Seismic Guidebook – 1995. RMAG-DGS 3-D seismic symposium presentation. Fryberger, S.G. 1984. The Permian Upper Minnelusa formation, Wyoming: ancient example of an offshore-prograding eolian sand sea with geomorphic facies, and system-boundary traps for petroleum, in Goolsby, J. and D. Morton, eds., the Permian and Pennsylvanian Geology of Wyoming, Thirty-fifth Annual Field Conf., 1984 Wyoming Geological Association Guidebook, p. 241-271.