Delivering Quality Wellbore Reamers Stabilizers 2 0 Benoit

Delivering Quality Wellbore Reamers - Stabilizers 2. 0 Benoit Deschamps Global Applications Eng. Director 1

Agenda § Introduction: Wellbore quality…Why do we care ? § Wellbore Irregularities: Overview – Root Cause vs Symptoms § ROI Wellbore Conditioning Technologies – Design Features – Applications – Value provided § Summary & Debate 2

Introduction: High Quality Wellbore – Who Cares ? Delivering a Higher Quality Wellbore 3

Introduction: High Quality Wellbore – Who Cares ? Delivering a Higher Quality Wellbore Drilling 4 Drilling Better & Faster

Introduction: High Quality Wellbore – Who Cares ? Delivering a Higher Quality Wellbore Drilling Better & Faster Deployment 5 Set Casing @ Target Depth

Introduction: High Quality Wellbore – Who Cares ? Delivering a Higher Quality Wellbore Drilling Better & Faster Deployment Set Casing @ Target Depth Cementation 6 Optimum Cement Coverage

Introduction: High Quality Wellbore – Who Cares ? Delivering a Higher Quality Wellbore Drilling Better & Faster Deployment Set Casing @ Target Depth Cementation Optimum Cement Coverage Production Zonal Isolation Long Term Well Integrity 7

Introduction: High Quality Wellbore – Who Cares ? Delivering a Higher Quality Wellbore Drilling Better & Faster Deployment Set Casing @ Target Depth Cementation Optimum Cement Coverage Production Zonal Isolation Long Term Well Integrity 8

Introduction: High Quality Wellbore – Who Cares ? Delivering a Higher Quality Wellbore Drilling Better & Faster Deployment Set Casing @ Target Depth Cementation Optimum Cement Coverage Production Zonal Isolation Long Term Well Integrity 9

Introduction: High Quality Wellbore – Who Cares ? Delivering a Higher Quality Wellbore Drilling Better & Faster Deployment Set Casing @ Target Depth Cementation Optimum Cement Coverage Production Zonal Isolation Long Term Well Integrity 10

Wellbore Irregularities Geomechanics - WBI “Mechanically” Induced Borehole-Patterns

Wellbore Irregularities Geomechanics - WBI 13

Wellbore Irregularities Geomechanics - WBI Consequences: • Tight Hole, restrictions, Obstructions, Cavings • Lower ROP • Problematic Tripping In/Out Stuck Pipes • Problematic Casing RIH and subsequent Ops • … 14

Wellbore Irregularities Geomechanics - WBI Consequences: • Tight Hole, restrictions, Obstructions, Cavings • Lower ROP • Problematic Tripping In/Out Stuck Pipes • Problematic Casing RIH and subsequent Ops • … Primary Mitigation: MW, Particles Engineering (Blocking Solids) Insurance, Reactive Solution: Reaming Capabilities 15

Wellbore Irregularities Geomechanics - WBI “Mechanically” Induced Borehole-Patterns “Directional” Patterns 3 D Directional Instability of Drilling Systems Ref: SPE 173156 16

Wellbore Irregularities “Mechanically” Induced Borehole-Patterns “Directional” Patterns Ex: Rotating – Sliding Patterns Ref: SPE 151248 Ref: SPE 183299 17

Wellbore Irregularities “Mechanically” Induced Borehole-Patterns “Directional” Patterns Vibrationally Induced - 3 D Directional Instability of Drilling Systems Ref: SPE 173156 Ref: SPE 183299 18

Wellbore Irregularities “Mechanically” Induced Borehole-Patterns “Directional” Patterns Vibrationally Induced - 3 D Directional Instability of Drilling Systems Ref: SPE 173156 Ref: SPE 183299 Drilling System: Bit (Profile, Steerability, Walk) BHA Stiffness Stabilizer OD & Position Ops Param: WOB (*) – RPM Evolution (Depth, Wear, Drag) Formation strength 19

Wellbore Irregularities “Mechanically” Induced Borehole-Patterns “Directional” Patterns Vibrationally Induced - 3 D Directional Instability of Drilling Systems Ref: SPE 173156 Drilling System: Bit (Profile, Steerability, Walk) BHA Stiffness Stabilizer OD & Position Ref: SPE 183299 Ops Param: WOB (*) – RPM Evolution (Depth, Wear, Drag) Formation strength Ref: SPE 134580 20

Wellbore Irregularities Geomechanics - WBI “Mechanically” Induced Borehole-Patterns “Directional” Patterns 21 3 D Directional Instability of Drilling Systems

Wellbore Irregularities Geomechanics - WBI “Mechanically” Induced Borehole-Patterns “Directional” Patterns Perturbation 22 3 D Directional Instability of Drilling Systems

Wellbore Irregularities Geomechanics - WBI “Mechanically” Induced Borehole-Patterns “Directional” Patterns 3 D Directional Instability of Drilling Systems Perturbation 23 Consequences: • Tight Hole, Drift Restriction • Lower ROP • Problematic Tripping In/Out Stuck Pipes • Problematic Casing RIH and subsequent Ops • Additional contact points (T&D- Directional, Vibrations – Increased Cyclic Bending stresses, …)

Wellbore Irregularities Geomechanics - WBI “Mechanically” Induced Borehole-Patterns “Directional” Patterns Primary Mitigation: MW, Particles Insurance: Reaming Capabilities…Reactive Solution 24 3 D Directional Instability of Drilling Systems Perturbation Consequences: Primary Mitigation: BHA design • Tight Hole, Drift Restriction Insurance: Reaming Capabilities…why • Lower ROP • Problematic Tripping In/Out Stuck Pipes • Problematic Casing RIH and subsequent Ops • Additional contact points (T&D- Directional, Vibrations – Increased Cyclic Bending stresses, …) only Reactive Solution ?

Wellbore Irregularities Geomechanics - WBI “Mechanically” Induced Borehole-Patterns “Directional” Patterns Primary Mitigation: MW, Particles Insurance: Reaming Capabilities…Reactive Solution 25 3 D Directional Instability of Drilling Systems Perturbation Consequences: Primary Mitigation: BHA design • Tight Hole, Drift Restriction Insurance: Reaming Capabilities…why • Lower ROP • Problematic Tripping In/Out Stuck Pipes • Problematic Casing RIH and subsequent Ops • Additional contact points (T&D- Directional, Vibrations – Increased Cyclic Bending stresses, …) only Reactive Solution ?

Agenda § Introduction: Wellbore quality … Why do we care ? § Wellbore Irregularities: Overview – Root Cause vs Symptoms § ROI Wellbore conditioning Technologies – Design Features – Applications – Value provided § Conclusion & Debate 27

Gun. DRILL Reamer: Features – Smart Stabilizer Bi-directional PDC cutting structure: 180 degree blade coverage: Heavy Duty Cutting Structure: Leading edge – ream through ledges, ensure borehole in gauge. Compatible with all BHA tallies. Large number of PDCs for improved durability under harsh drilling condition. Trailing edge – back-ream through tight spots, saving dedicated wiper trips. Enhance tool stability with greater borehole wall contact. Neck TCIs : For better steel body protection Cylindrical PDC cutters: Axi-symmetric cutters distribution for balanced drilling and reduced vibrations cutter design. Large mud-ways flow area: Tungsten Carbide Insert (Flat): Large number of TCIs for effective grinding and longer tool life in extreme drilling. Flat TCIs for less resistance while sliding 28 Optimized to minimize balling potential and facilitate smooth cuttings evacuation.

Gun. DRILL Reamer: Features – Smart Stabilizer 29

Gun. DRILL Reamer: Features – Smart Stabilizer 30

Gun. DRILL Reamer Applications 31

Pre-Run Analysis 32

Post-Run Analysis: Time-Based Data Analysis 33

Case Study (1) 34

Case Study (2) 35

Case Study (2) (m/h) Other Reamer 36 Other Reamer

Concept Extension – Customizable Tools 37

Roller Gun. DRILL Reamer 38

Roller Gun. DRILL Reamer 39

Roller Gun. DRILL Reamer 40

Roller Gun. DRILL Reamer 41

Case Study 42

Summary § Wellbore quality impacts the full well life cycle § Focus on the Root Cause, not the Symptoms § Rubicon: Proactive -Simple- Solution Approach § Instead of Using a Bigger Hammer, Lubricate the Nail 43

Slick vs Stabilized ? § What is the purpose ? § What is the Economic limit of the Performance – What do we want to achieve / improve ? How do we measure & assess the technical effect ? – Do we look at the full financial impact (NPT, hidden cost, Impact on Completion, …) § Iterative process (on both sides of the Equation) 44

Thank You 45