Drilling Operations

• Preparation of drilling programs (DOP)
• Well construction stages
• Drilling operations: WOB and RPM, drill off tests
• Drill bit selection optimisation
• Field Leak off test- Essential knowledge
• Floating/ Large casing
• Salt problems

Drillstring Design

• Drillstring and BHA
• Drill pipe, drillcollars, grades of drill pipe and strength properties
• Tool joint & Thread types
• Calculations of approximate weight of drill pipe and tool joint
• Drill collar weight and neutral point
• Bending strength ratio
• Margin of over-pull
• Slip crushing
• Pressure-area method
• Jars
• Shock subs
• Reamers and stabilizers

Hydraulics Optimisation

• Hole Cleaning
• Optimum flow rate
• Optimum nozzle sizes
• Hydraulic Optimisation Criteria:
• Maximum Horse Power or Impact Force

Hole Problems

• Lost circulation: causes and diagnosis and cure.
• Stuck Pipe Diagnosis
• Differential sticking mechanisms
• Freeing differentially stuck pipe
• Pipe freeing agents
• Reduction of mud hydrostatic pressure
• Dealing with kicks while freeing stuck pipe
• The U-tube method
• Mechanically stuck pipe mechanisms
• Shale problems (brittle, reactive and hard shales)
• Settled cuttings
• Ledges and doglegs, Key seating, Fractured formations
• Decision trees: Which pipe sticking mechanism is in my hole?

Fishing Operations

• Back Off Operations
• Free point indicator
• Explosive charges
• Torque calculations
• Planning Fishing operations
• Fishing & Milling Tools
• Fishing economics
• When to give up

Inflow Testing

• Why carryout inflow testing
• Inflow Testing Assembly
• How to correctly conduct a negative flow test

CBL/VDL

• What is CBL?
• What is VDL?
• Free pipe response
• Cemented pipe response
• Micro-annulus
• How to read CBL/VDL log?
• Examples

Remedial Cementing

• Cement Chemistry
• Stages of Cement Setting
• Flash Setting
• Cement Plugs
• Job Procedure – Balanced Plug
• Slurry volume calculations
• Dump bailer method
• Squeeze cementing
• Bridge plugs
• Cement retainers

Gas Migration Problems

• Reasons for as migration
• Mechanics of gas migrations
• Effects of gel Strength
• Annulus pressures: origin and management
• Calculations of trapped annulus pressures resulting from heating effects

Casing Landing Operations

• Calculations of buoyant casing weight
• Temperature effects
• Cementing forces
• Landing casing as-cemented

Advanced Casing Problems

• Casing buckling mechanics
• Casing wear