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PRESE PRE SENTA NTATIO TION TITLE TITLE Anti-Collision Best - - PowerPoint PPT Presentation

Aug 11, 2023 244 likes •447 views

1 PRESE PRE SENTA NTATIO TION TITLE TITLE Anti-Collision Best Practices Developed Industry Steering Committee on for Horizontal Drilling Across Pre- Wellbore Survey Accuracy existing Horizontal Wellbores Wellbore Positioning Technical

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SLIDE 1

Industry Steering Committee on Wellbore Survey Accuracy

Wellbore Positioning Technical Section

48 48th

th Gener

General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA

PRE PRESE SENTA NTATIO TION TITLE TITLE

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Anti-Collision Best Practices Developed for Horizontal Drilling Across Pre- existing Horizontal Wellbores Erin Britton & Rachel Grande

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SLIDE 2

Industry Steering Committee on Wellbore Survey Accuracy

Wellbore Positioning Technical Section

48 48th

th Gener

General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA

Erin Britton, Sr. Drilling Engineer

Petroleum engineer with over 9 years energy industry experience specializing in drilling engineering with a focus in project management. Holds a B.S. in Petroleum Engineering from the University of Oklahoma and a Masters of Energy Business from the University of Tulsa. Experience across multiple basins & plays including extended reach and multilateral drilling projects.

Rachel Grande, Sr. Geologist

Geologist with over 9 years energy industry experience specializing in

  • perational geology and field development. Holds a B.S. in Geological

Sciences from Ball State University. Experience in multiple basins & plays including Bakken, Powder River, and Eagle Ford.

Spe peaker Info Information

  • n

2

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SLIDE 3

48 48th

th Gener

General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

3

Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

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SLIDE 4

Industry Steering Committee on Wellbore Survey Accuracy

Wellbore Positioning Technical Section

48 48th

th Gener

General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA

Ove vervi rview

  • Current Anti-Collision Practices
  • Williston Basin Overview
  • Geologic Considerations and Planning
  • Risk Management
  • Drilling Considerations
  • Stoplight Method
  • Case Studies
  • Conclusion

Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

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SLIDE 5

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Anti nti-Co Colli lisi sion

Indus ustry ry V View

Stand tandard ard vi view errs w errs towards towards avoidan ance men e mentality:

  • Total Avoidance
  • Azm. Avoidance

Limited support and documentation for alternative processes when avoidance is not an option.

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

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SLIDE 6

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Anti nti-Co Colli lisi sion C n Case se S Study

Williston Basin

  • 13,000 vertical wells,
  • 15,000 horizontal wells,
  • 1,000 re-entry/directional wells.

Developed for horizontal drilling across pre-existing horizontal wellbores in the Williston Basin.

  • Drilled as close as 10 feet wellbore - wellbore

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

45 Miles

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SLIDE 7

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

  • Laterally Continuous

Formation

  • Well Control
  • Quality Data
  • Clear Steering Markers

Gamma Resistivity

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

Middle Bakken ~20’-80’ Three Forks

~15’-65’

Geologic ic C Consi sidera rati tions ns

Anti ti-Collision P n Progra ram C Constra raint nts

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SLIDE 8

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

  • Reinterpretation

* Profiles * Structure

  • Organization of

Stratigraphic position

  • Wellbore Placement
  • Target Selection

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

Geologic Pl Planning

Anti ti-Co Collisio llision M Methodo dolo logy gy

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SLIDE 9

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Drilli Drilling Cons Conside deration ions

Ri Risk M sk Management Pro Program

Poten

  • tenti

tial R Risks ks

  • Impact vs. Probability

Common Indicators

  • Operational Parameters
  • Geologic
  • Directional/Survey

Survey Error Ellipse of Uncertainty

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande Risk Matrix

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SLIDE 10

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Drilling U ing Unce ncerta tainty inty

Ellipsoi

  • ids o
  • f Uncer

ertai ainty

Maj ajor Con Concer ern A n Affecting ng Anti-Col Collision

  • n

Planni anning ng

  • Survey Error: MWD Error and

interference concerns. Azimuth Uncertainty Inclination Uncertainty Surface Location Uncertainty

  • Ellipse of Uncertainty: Expanding ellipse

from surface onwards.

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

Netwas Group Oil, 2017

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SLIDE 11

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Mitiga gati ting ng R Risk & & Acc ccounting unting for Err rror

Risk M Manag agemen ent M Meet ets G Geol

  • log
  • gy

Ability to simplify risk with the combination of drilling & geologic considerations.

  • Expected Structure
  • Apparent Dip
  • Distinct Stratigraphic Markers

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

Confirmation of “Y” or TVD direction

Ellipse of uncertainty becomes plane of uncertainty with no expansion in the Y direction.

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SLIDE 12

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Stopli toplight Me Meth thod

  • d

A Dis Disci ciplined A App pproach

Mul Multidisciplinary a approach us using:

  • Geologic Considerations
  • Operations Best Practices
  • Risk Management

Geologic overlapping target windows by color zone implemented across the planned wellbore based on the risk management plan considerations.

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

  • Red : High Risk
  • Orange: Med. Risk
  • Yellow: Low Risk
  • Green: No Risk

Existing Wellbore Stratigraphic Placement

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SLIDE 13

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Stopli toplight Me Meth thod

  • d

Ri Risk Pa sk Parameters

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

Red: High Risk

  • Controlled Operations & “high alert” communication
  • Precise Steering target required

Orange: Medium Risk

  • Controlled operations and heighted communication

procedures

  • Overlap zone for steering adjustments

Yellow: Low Risk

  • Standard operations & communication procedures
  • Begin steering considerations

Green: No/Low Risk

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SLIDE 14

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Ca Case Stu tudy dy A A

Stopligh plight M Meth thod d

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

23’ Total Thickness

Drilled 32’ above existing wellbore.

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SLIDE 15

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Ca Case Stu tudy dy B B

Stopligh plight M Meth thod d

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

Wellbore #3 Wellbore #2 Wellbore #1 #1 #2 #3

73’ Total Thickness

Drilled across 3 existing laterals.

  • Drilled 26’ below wellbore #1.
  • Drilled 34’ below wellbore #2.
  • Drilled 8’ below wellbore #3.
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SLIDE 16

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Ca Case Stu tudy dy C C

Stopligh plight M Meth thod d

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

Wellbore #2 #1 #2 #3

48’ Total Thickness

Drilled across 3 existing laterals.

  • Drilled 20’ below wellbore #1.
  • Drilled 36’ below wellbore #2.
  • Drilled 15’ below wellbore #3.
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SLIDE 17

48 48th

th Gener

General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Anti nti-colli

  • llision

ion M Mov

  • vin

ing Forw Forward

Advan ancem emen ent i in Prac actices es

Matur ature Bas e Basin D n Dev evel elop

  • pment

nt requires industry progression towards complex wellbore trajectories with significant collision concerns. Williston Basin anti-collision wells historical percent:

  • 2010 ~ < 0.1%
  • 2016 ~ 4.25%

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

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SLIDE 18

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Concl nclusio usions ns

Indus ustry ry A Advanc ncement nt

The progression towards increasingly complex wellbores requires Industry advancements in anti-collision practices and theories outside of avoidance mentality.

  • Proactive approach to development for infill wells.
  • Inclusive geological and engineering considerations.

The Stoplight Methodology simplifies complex multidisciplinary considerations including hazards and stringent operational requirements into easily recognizable plan. Green = Go, Red = Stop

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande

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SLIDE 19

48 48th

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General M Mee eeting ng Sept 27t 27th, 2018 2018 Dallas, U USA Wellb lbore Posit itionin ing T Technic ical S Section

Than ank Yo You

The methodology and subsequent case studies were performed as part of the

  • perational program at Liberty Resources, LLC.

We would like to thank Liberty Resources, LLC for their continued support.

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Anti-Collision Best Practices presented by Erin Britton and Rachel Grande