Day 1

Introduction to HP-HT drilling operations

HP-HT definition, classification, challenges, essentials
and differences

• Definitions, classifications, industry growth
• Technical challenges and knowledge gaps
• Origins and characteristics of HP HT
• Why HP-HT is different to normal drilling
Debrief: Assuring safe and efficient HP-HT drilling

Well construction, design, drilling rigs equipment and
HP-HT operating systems

• Well construction, planning, design issues:
    – Well equipment quality, material and failure issues
    – Hazards and concerns
    – Complicating factors
    – Well integrity, casing design and tubular selection
    – Well equipment response and preventing HP-HT failures.
• Rig, well equipment, integrity, concerns:
    – HP-HT well control layout
    – Rig, equipment audits, assurance
    – BOP equipment and component details
    – Cement (kill) pumps, cement manifold, and hook up details
    – Surface well control equipment, mud gas separators,
de-gassers
    – Rig instrumentation
    – HP drilling components and well-kill facility
    – Downhole tools and equipment
Debrief: HP-HT rig and associated well equipment

HP-HT Group Exercise

• Hazard within HP-HT drilling operations 
• Generate a priority list of project specific drilling
  hazards

Debrief: Review of Day 1

Day 2 continued

HP-HT Transition and reservoir zone drilling

• Why manage plans HP-HT transition and reservoir
zones?
    – Well integrity testing, assurance
    – Well monitoring equipment, detection, early
warning systems
    – Transition, reservoir zones drilling
• Transition, reservoir zone well control:
    – Managing geology and geoscience problems
    – Gas solubility, gas expansion and PVT effects in
drilling fluids
    – Mud weight management (gelation, inertia and
compressibility)
    – Pore pressure, wellbore instability detection.
    – Best practice
    – Finger printing, flow-back, Ballooning and super
charging

Debrief: Transition and reservoir zone drilling

HP-HT Group/Individual Exercises day 2

• EMW calculations
• Drilling and cementing fluids, temperature, solubility
effects
• Gas behavior, surface handling
• Pore fracture and wellbore stability

Debrief: Review of Day 2

Day 4

Day 4 Well Integrity, Well Control Assurance

Well control management and assurance

• Regulation, operating standards
• Roles, responsibilities of personnel
• QHSE, loss of control operations
Training and competency development
• Team work and communication
• Primary control, Early kick detection
• Finger printing
• Flow back, Supercharging, Bridging
• Best Practice checks to be performed
• Secondary control:
    – Preparation and alertness
    – Pressure management
    – Kick, shut in procedures
    – Determining kick size
    – Cross flow, Secondary influxes
    – Tertiary control
    – Bull-heading, lubrication, volumetric killing
(stripping)
    – Dynamic kill and other techniques underground
flows
    – H2S, simulator training and exercises

HP-HT Emergency and contingencies

• Emergency procedures
• Well kill continuation during loss of power
• Emergency cement plugs
• Insufficient casing shoe strength

Debrief: Well integrity, assurance and management

HP HT Group/Individual Exercises Day 4

• Secondary and tertiary well control exercise session

Debrief: Review of Day 4

Day 2

HP-HT Design, Engineering & Operations

Well planning, design and construction

• Planning and sequencing:
    – Project management simplified
    – Well planning, basis of designs
    – Casing and tubular selection
• Well design, engineering issues, and concerns:
    – Pressure management
    – Losses, kicks
    – Wellbore instability and differential sticking
• Gas behavior in HP-HT drilling fluids:
    – Gas definitions, gas release, acceptable levels
    – Equivalent mud weight management
    – Understanding HP-HT pressure effects
• Ideal gas laws and importance of compressibility
factor ‘Z’:
    – PVT & density relationships
    – Gas behavior while drilling
    – Fluid diffusion
• Optimizing drilling and cement fluids:
    – Fluid testing and monitoring
    – ‘EMW’ operating challenges
    – Temperatures and heat transfer effects
• HP-HT case studies:
    – Well objectives & design considerations
    – Pressure, temperature profiles
    – Days vs depth, offset study, hazards and risk
mitigation
Debrief: Well planning, design and construction

Wellbore Pressure and Stability Management

• Formation abnormal and subnormal pressures recap:
    – Effective pressure management
    – Pressure prediction and detection
• Wellbore stability fundamentals:
    – Claystone, mudstone and shale classification
problems
    – Impact of poor decision making
    – Fracture gradient prediction, well integrity testing
• Benefits of pressure while drilling and advanced
HP-HT modelling

Debrief: Pressure and Stability Management

Day 3

HP-HT Wells and Drilling Situational Problems

General HP-HT situational drilling problems

• HP HT situational problems:
    – Operating loss and waste
    – Narrow operating windows
    – Loss circulation, wellbore instability
    – Overbalanced drilling
    – Real time vs modelling prediction
    – Drilling fluids (pressure and temperature effects)
    – Barite sag, solids loading and hole cleaning, swab and surge                      – Stuck pipe prevention
Debrief: HP-HT situational drilling problems

Equipment assurance, failure prevention

• Prevention, quality control and assurance
• Surface and downhole equipment
• Life of well integrity and assurance

Other HP-HT situational problems:

• Geological risks and uncertainties
• Formation damage
• QHSE and environment protection
• Logistics and supply chain
• Contingency, emergency
• Suspension and abandonment

Debrief: Qell and drilling situational problems

Learning from Macondo’s failure

• 45mins (investigative) video
• Review of findings
• Discussion

Debrief: Translating and sustaining learning

HP HT Group / Individual Exercises day 3

• Situational drilling problems exercises

Debrief: Review of Day 3

Day 5

Day 5 HP-HT Adaptive Drilling Technologies

HP-HT Technology adaptation

• Optimizing well design:
    – Expandable systems
• Wellbore strengthening
• Mono-bore wells
• Casing while drilling
• Managed pressure drilling:
    – Simplified MPD, continuous circulation
    – Constant bottom hole pressure
    – Mud cap, pressurized mud cap drilling
    – Dual gradient drilling, Advanced MPD
• Other technology adaptors:
    – HP HT tools advancement
    – LWD, SWD, RSS advancement
    – New drilling and cementing systems
    – Designer cement for HP HT wells
    – One trip, SMART completions
    – Enhanced seals and well integrity

Debrief: HP-HT technology adaptation

Final close out discussions

• Parking lot re-visit
• Final HP-HT question and answer
• Open house discussion session

Debrief: HP-HT parking lot, discussion session

Final Debrief: Review of Day 5