aplications of casing drilling

8/12/2019 Aplications of Casing Drilling

1/19

World OilCasing Drilling Technical Conference

Ken Armagost, BP America

Future Implications / Applications of Casing Drilling


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3/19


Uptake is currently limited by

1. Clear Understanding of the Benefits

2. Understanding Risks

3. Matching Technology to Applications

4. Portfolio Opportunity

5. Remaining Gaps


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A Clear Understanding of the Benefits

Fewer Well Construction ProblemsFewer Unscheduled Events

Fewer Lost Circulation / Influx Problems

Fewer Hole Problems / Remedial WorkLess Reaming

Less Stuck Pipe

Ability to Reliably get Casing to Bottom

Running Casing in Difficult Holes

Less Flat Time


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Increased Capabilities

Wellbore StrengtheningSmear Effect

Drilling into Pressure Depleted Zones

Drilling through Mobile Formations

Drilling through Fractured/Rubble Formations

Set Casing Thru Shallow Gas and Water Flows

Drilling in Production LinersPotential to Downsize Casing Program



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Safety and Environment

Fewer Crews

Less Pipe Handling

Fewer TripsLess Well Control

Less Diesel

Easier Moves - Fewer Rig Loads

No Personnel in the DerrickFewer Dropped Objects

Smaller Holes / Less Mud



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5. Remaining Gaps


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9/19







5. Remaining Gaps8 3/8

Stabilizer

Internal BHA

8 3/8

Stabilizer

Casing

Stabilization

Profile

Nipple

6 1/4

PDC Bit

7 x 8-1/2

Underreamer

7 Casing

6 1/8

Stabilizer

4-3/4

Collar

6 1/8

Stabilizer

7 DLA


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Land Operations

Bottom Founded Operations

Platform Operations

Stand-Alone Caisson Operations

Floating Operations

Floating (Surface BOP)Floating (Subsea BOP)

Matching Technology to Applications


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Variations of the Technology

1. Disposable Bits

Baker Drill Down Shoe ~ 46 jobs

Weatherford BBL System ~ 300 jobs

2. Retrievable BHA Systems

Tesco ~ 70 jobs Baker Casing Drill Down > 20

directional wells in Thailand

Baker Drill In Liner ~ 17 jobs

Matching Technology to Applications


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5. Remaining Gaps


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Potential for Broad Application

Worldwide

Onshore / Offshore

Platform Operations

Can be Cost Prohibitive to Mobilize for Single Jobs

Mob and De-mob of Equipment

Cost of Learning Curve

Portfolio Opportunity


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Casing Drilling

Learning Curves

0

10

20

30

40

Days

Spud to ReleaseSpud to Release

BP Wamsutter Field ExperienceChanged Casing Thread and

Wear Protection Method on 4

Began drilling with full size6 bit for Production Interval

400450500550

600650700

FT/Day Conventional Rig Average

Last 5 Casing Wells AverageConocoPhillips Lobo Experience

13-3/8" DS2 Batch Casing Installation

China Feb / Mar '03

0

5

10

15

20

25

30

35

1 2 3 4 5 6 7 8 9 10 11 12 13

Well Numbe r

InstallationTime,

hrs


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Portfolio Opportunity

Candidate Well Selection

Lost Circulation

Wellbore Stability

Pressure Depleted Intervals

Unstable IntervalsMobile Formations

Multi-Well Drilling Program

Flat Time Improvement

Others


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5. Remaining Gaps


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Remaining Gaps

Deviation Control / Directional Drilling

Subsea Applications

Platform DrillingAnti-collision issues

Directional Drilling - Small Casing Sizes

Small Tool Reliability

Vibration Modeling, Management, Mitigation

Cementing Float Equipment

Centralizers

Liner Drilling Systems

Deep Well Applications


18/19


Shared Learnings

Organizational Engagement

Remaining Gaps

Rig Accessnot all will have a portfolio thatallows access to the most efficient rigs

Formation Evaluationlimits well types or intervals


19/19


Questions for Discussion

1. What do you see as limiting wider acceptance of

Casing Drilling within industry?

2. Do you see new opportunities within your portfolio

that could be better addressed with Casing Drilling?

3. Have you reached the limits of performance with

conventional drilling technologies?

4. How do we best engage our drilling organizations?

aplications of casing drilling

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