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Horizontal Drilling in Kansas Current Status and Case Histories. Presentation to the Society of Petroleum Engineers Wichita Chapter January 12, 2000 by Paul Gerlach Research Scientist Petroleum Research Section Kansas Geological Survey. Horizontal Drilling in Kansas

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Horizontal Drilling in Kansas

Current Status and Case Histories

Presentation to the

Society of Petroleum Engineers

Wichita Chapter

January 12, 2000

by

Paul Gerlach

Research Scientist

Petroleum Research Section

Kansas Geological Survey

slide2
Horizontal Drilling in Kansas

Current Status and Case Histories

slide3
Horizontal Drilling in Kansas

Background

  • History of Horizontal Drilling
    • 1891 - First Patent Issued
    • 1929 - First Horizontal Oil Well Drilled
    • 1950’s - Development of Hydraulic Fracturing suppressed need for Horizontal Wells
    • 1970’s – used long radius technology to develop fields

w/o navigational technology

    • 1980’s – Advances in Directional Technology to Steer Offshore Wells
    • 1985 – First Austin Chalk Well
    • 1990 – approx. 1,500 Horizontal Wells Worldwide
    • 2000 – Est. 20,000 Horizontal Wells Worldwide
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Horizontal Drilling in Kansas

Background

  • What is a Horizontal Well ?
    • No API Definition
    • Any well put in a reservoir to expose as much permeability and porosity as possible
    • A Controlled Directional Completion Procedure

Why Drill Horizontal Wells ?

    • Produce Reserves not Drained by Vertical Wells
    • Produce Reserves not Economic in Vertical Wells
    • A More Efficient Use of Reservoir Drive Energy
    • Provide better Rate of Return than Vertical Well
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Horizontal Drilling in Kansas

Current Status

  • Current Status of Non-Vertical Wells (November, 1999)
    • 68 Approved “Intent to Drill” Applications
    • 34 Horizontal Wells Confirmed
    • 1 Horizontal Well Reported (not confirmed)
    • 3 Deviated Wells Confirmed
        • many more but unreported
    • 2 Slant (high angle) Wells Confirmed
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Horizontal Drilling in Kansas

Definitions & Terms

  • Classification of Horizontal Wells

Horizontal Well Radius Categories

Traditionally

Long - Medium - Short - Ultrashort

No API Standard

Currently

Classified by Bend Rate of Curve

2o-8o / 100 Ft. – Long Radius

8o-35o / 100 Ft. – Medium Radius

1/2o-2o / Ft. – Short Radius

Determines:

Lateral Length

Steering Method

Completion Technique

Treatment Methods

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Horizontal Drilling in Kansas

Definitions & Terms

Common Terms used to Describe Horizontal Wells

MWD - “Measurement While Drilling”

Azimuth, Inclination, Measured Depth

LWD - “Logging While Drilling”

most standard vertical hole e-logs

PIF - “Productivity Improvement Factor”

multiplier of production increase over offset vertical wells

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Horizontal Drilling in Kansas

Opening Remarks

  • Caveat Contemplor

Determining Success of a Horizontal Well

Requires:

Assessing if Basic Criteria was Accomplished

        • Where it is drilled….

geology - structure & stratigraphy

        • Why it is drilled….

reservoir & drive mechanism

        • What it is drilled for….

reservoir management

        • How it is drilled….

well design, drilling, & completion

    • Operator Reporting Prevents Accurate Assessment
        • Inaccurate
        • Incomplete
        • Non-existent
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Horizontal Drilling in Kansas

Current Status

  • General Characteristics of the 34 Horizontal Wells
    • 1st Horizontal Well in Kansas

Mar-1988, Phillips Petroleum, Trego Co.

196 ft. Lateral in Marmaton Frmn.

    • Build Rate & Radius Ranges

Shortest: 2.7o/ft. / 33 ft.

Longest: 1.4o/100 ft. / 1087 ft.

    • Measured Depth / True Vertical Depth

Shallowest: 250 ft. / 200 ft.

      • Deepest: 7969 ft. / 6190 ft.
    • Horizontal Lateral Length

Shortest: 40 ft.

Longest: 1877 ft.

    • Most Frequently Drilled Formation

Mississippian - Osage (7), St Louis (4), Spergen-Warsaw (3)

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Horizontal Drilling in Kansas

Spatial Distribution and Formation

Chse

Peru

Marm

Bevier

McClth

Miss

Arbk

Gas Stg

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Horizontal Drilling in Kansas

Current Status

Mississippian, et al

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Horizontal Drilling in Kansas

Case Histories

Riffe

McClouth Field

Muhlheim

Lost Springs

Stillwell

Aldrich NE

Hugoton

Wieland W

Oppy S

Porter

Cunningham Gas Strg

Shuck

Coffeyville

Chse

Peru

Marm

Bevier

McClth

Miss

Arbk

Gas Stg

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Horizontal Drilling in Kansas

Case Histories - Winfield Formation

Toe Up

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Horizontal Drilling in Kansas

Case Histories - Winfield Formation

PIF: .89

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Horizontal Drilling in Kansas

Case Histories - Osage Formation

Toe Up

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Horizontal Drilling in Kansas

Case Histories - Osage Formation

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Horizontal Drilling in Kansas

Case Histories - Osage Formation

PIF: 3.1

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Horizontal Drilling in Kansas

Case Histories - Osage Formation

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Horizontal Drilling in Kansas

Case Histories - Osage Formation

PIF: 5.3

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Horizontal Drilling in Kansas

Case Histories - Spergen-Warsaw Formation

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Horizontal Drilling in Kansas

Case Histories - Spergen-Warsaw Formation

PIF: 2.2

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Horizontal Drilling in Kansas

Case Histories - St. Louis Formation

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Horizontal Drilling in Kansas

Case Histories - St. Louis Formation

slide29
Horizontal Drilling in Kansas

Case Histories - St. Louis Formation

PIF: 3.1

slide30
Horizontal Drilling in Kansas

Case Histories - McClouth Formation

Toe Up

slide31
Horizontal Drilling in Kansas

Case Histories - McClouth Formation

PIF: 5.5

slide32
Horizontal Drilling in Kansas

Case Histories - Bevier Coal Formation

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Horizontal Drilling in Kansas

Case Histories - Bevier Coal Formation

PIF: 3.4

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Horizontal Drilling in Kansas

Case Histories - Peru Formation

slide35
Horizontal Drilling in Kansas

Case Histories - Peru Formation

PIF: .58

slide36
Horizontal Drilling in Kansas

Case Histories - Arbuckle Formation

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Horizontal Drilling in Kansas

Case Histories - Arbuckle Formation

slide38
Horizontal Drilling in Kansas

Case Histories - Marmaton Group

slide39
Horizontal Drilling in Kansas

Case Histories - Viola Formation

Toe Up

slide40
Horizontal Drilling in Kansas

Conclusions

  • Currently a Mixed Bag of Successes and Failures
    • Best Performing Reservoirs
      • Atokan Group - McClouth Best PIF: 5.5
      • Mississippian - Osage Best PIF: 5.3 to 3.1
      • Mississippian - St. Louis Best PIF: 3.1
      • Cherokee Group - Bevier Coal Best PIF: 3.4
      • Mississippian - Spergen-Warsaw Best PIF: 2.2
    • Poorest Performing Reservoirs
      • Marmaton Group - Peru Best PIF: .58
      • Chase Group Best PIF: .89
    • Most Horizontal Candidates not Properly Screened
      • All Reservoir’s w/ Low BHP & Kh Perform Poorly
        • Chase Group, Marmaton, Peru, some Mississippian
      • All Reservoir’s w/ High Rcrvy. Eff. Perform Poorly
        • Arbuckle, some Mississippian
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Horizontal Drilling in Kansas

Conclusions

  • Many Good Candidates not yet Tested
    • Thin Beds in Lansing-Kansas City
    • EOR in Multiple Reservoirs
    • SAG-D Thermal in Cherokee Sands of SE Kansas
    • Attic Oil in Large Structures (Ordv. and Miss.)
    • High BHP, Low Kh of Fractured Miss of SC Kansas
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Horizontal Drilling in Kansas

Acknowledgements

Petroleum Research Section

Dr. Timothy Carr

Kansas Corporation Commission

Conservation Division

Dave Williams

Donna Dill

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