WellSharp – Well Services Workover & Intervention (OGO)

Course Objective
The curriculum identifies a body of knowledge and a set of job skills that can be used to provide well control training for Oil & Gas operations personnel.

Course Design

• Power Point© / Lecture / Audio Video / Visual Aids
• Demonstrations
• Practical Simulations Exercises
• All students are supported with Laptops for online reviews, sample testing, support material, manuals and data sheets. Testing is online controlled by IADC thru their website. All support material is soft copied to each student thru thumb drives.

Successful Course Completion

• Requires a minimum score of 75% or better.
• Delegates will have no more than three hours to complete the exam.
• Grades shall be calculated online by IADC and be proctored by Llyod’s Registry personnel, all questions are multiple choice.
•  An Immediate retest after review is available or within 45 days of the initial test failure.  The delegate must score a 60% or better to qualify for the re-test option.

Course Content Summary

• Classroom
• Practical’s

Breaks:  10-15 minutes (approximately every 1.5 hours)                     

Course Topics - Day 1
Risk Awareness and Management

• Human elements
• Live/Dead Well
• Risk Management
• Pre-job Communication
• Handover for Tour Change
• Safety Margins
• Bridging Documents
• Emergency Procedure/ ICS
• Pressure Control Equipment / Barrier Envelope Considerations
• Equipment Requirements
• Load Bearing & tie down considerations

Well Control Principles & Calculations

• Pressure Fundamentals
  • Types of pressure
  • Hydrostatic pressure
  • Applied Pressures
  • Surface pressure
  • SITP
  • Annulus Pressure/ communication
  • Pump Pressure
  • ECDs (Equivalent Circulating Densities)
  • Trapped Pressure
  • Swab/surge
  • Formation pressure
  • Differential pressure
  • Fracture pressure
  • Bottom hole pressure
  • Balanced
  • Underbalanced
  • Overbalanced
  • Maximum Anticipated Surface Pressure (MASP)
  • Forces from Applied Pressure
  • Equivalent circulating density ECD
  • Math orientation
  • Frictional pressure loss effects on downhole pressure
  • Surface pressure effects
  • U-tube principles
  • Kill Mud Weight
  • Pressures expressed as an equivalent fluid weight EMW
  • Calculations
  • Volume / Displacement calculations
  • Circulation Rates and Pressures
  • Well Data Information
• Principles
  • Tubing Collapse and Casing Burst
• Pre-recorded Well Information
  • Well configuration
  • Top and bottom of perforations
  • Packer/tool locations
  • Tubular dimensions, lengths and strengths
  • Deviation survey (MD, TVD)
  • Secured Well Conditions
  • Wellhead/Well Control Stack/Christmas tree valves

Barriers

• Philosophy and Operation of Barrier Systems
  • Barriers and barrier envelope
  • Purpose of barriers during completions and well interventions
  • Operational Shut-in Hierarch (Sim #1)
  • Bleeding pressure (optional)
• Types of Barriers
  • Mechanical barriers
  • Fluid barriers
• Levels of Barriers
  • Primary and Secondary Barriers and Emergency Closure
  • Minimum number of barriers required for safe operations
• Barrier Management
  • Testing mechanical barriers
  • Validating fluid barriers
  • Detecting a failed barrier
• PCE Equipment

Coil Tubing

• PCE Equipment, Strippers, lubrication, corrosive environs
  • Secondary PCE
  • Christmas trees, valves priority
• ESD's
  • Crane operation: complications
  • Reel operations, hydraulic locks for runaway
• Wellbore pressure and effects on tubing
• Flow Tee/cross, check valves
  • Shears

Gas Characteristics and Behavior

• Pressure and Volume Relationship (Boyles Law)
  • Relationship between pressure and volume of a gas in the wellbore
  • Pipe Heavy/Pipe Light
  • Simulator Practice, SPR's and leaks
  • Leak above the BOP
  • Coil separation either downhole or at surface
  • Leaking above the injector
• Homework

Course Topics - Day 2
Completion and Workover Fluids

• Completion and Workover Fluids
  • Purpose of fluid, purpose of packer fluid
• Workover / Completion Fluid Functions
  • Fluid loss, Formation damage
  • Corrosion, Environmental concerns
  • Fluid Properties
  • Rheology of Fluids
  • Brine requirements, temperature and pressure
• Fluid Flow Behavior
  • Frictional pressure losses
  • Fluid flow path geometry (wellbore/coiled tubing)
  • Flow path restrictions (wellbore, downhole tools)
• Fluid Types
  • Oil based fluids, base oil, water-based fluids
  • Brines
  • Blockages
  • Gases
• Measuring Techniques
  • Fluid properties

General Overview of Surface and Subsurface Wellbore Equipment

• Christmas Tree
  • Components
  • Purpose and Function of the Christmas Tree
• Blowout Preventer Stacks and Components
  • Preventer Equipment
  • Annular BOPs
  • Rubber goods
  • Shear or Cutter rams
  • Blind/Shear rams
  • OEM Replacement Parts
  • Flow cross, kill valves
• Auxiliary Well Control Equipment
  • Kelly valves, full open safety valve (FOSV)
  • Lubricators, Wireline valves
• Accumulators
  • Accumulator Drawdown test
  • Closing time test
  • Adjustment of operating pressure
  • Operating purpose of main and remote-control panels
  • Operating functions of the remote BOP control panel
• Chokes and Choke Manifolds
  • Manual adjustable chokes
  • Remote adjustable chokes
  • Choke manifolds
• Fluid Measuring
  • Pump stroke counter
  • Flow Rate Indicator
• Work string and Production Tubing
  • Tubing Integrity
  • Operational Hazards
  • Inside BOPs (IBOPs)
  • Tubing Failures
  • Polished Bore Receptacle (PBR)
• Completion Equipment
  • Tubing Hangers
  • Surface Controlled Sub-Surface Safety Valve (SCSSV)
  • Sub-surface safety valves (SSSVs)
  • Packers
  • Landing nipples and tubing plugs
  • Sliding sleeves and ported nipples
  • Gas Lift Valve
• Homework

Course Topics - Day 3
Snubbing PCE

• PCE Equipment, Strippers
  • Secondary PCE
• Christmas trees
  • Shears
  • Return flow sensor
  • H2S and flammable/explosive gas sensors
• Shut-in
  • Non-shearable or Non-sealable equipment across the Well Control Stack
  • Roles and Responsibilities
  • Shut-in Sequence
  • Verification of Shut-in
  • Annular
  • Wellhead/BOP/Xmas tree
  • Manifold
• Monitoring and Recording During Shut-in
  • Recordkeeping
  • BOP Stack/Wellhead Choke and Kill Lines, Manifolds, Riser Spool, Accumulator Hoses and Connections
  • Accumulator
• Stripping operations
  • Importance of strip/trip tank and line up
  • Stripping procedure for BOP
  • Measurement of volumes bled from the well
  • Stripping with or without volumetric control
• Preparing for Well Entry
• Calculations
• Simulator Practice
• Homework

Well Kill in Preparation of Well Interventions

• Objective of Well Control Techniques
  • Live Well intervention (without killing the well):
  • Dead Well intervention (killing the well):
• Bullheading
  • Definition, Application, and Calculation
• Lube and Bleed
  • Definition, Application, and Calculation
• Forward Circulation (Driller’s) Method
  • Definition, Application, and Calculation
• Reverse Circulation
  • Applying Reverse Circulation method
• Pump Startup and Shutdown Procedure
  • Startup/Shutdown procedures
  • Action(s) to take if an SCR has not been recorded
  • Why startup pump pressure may not equal ICP
  • Why pump pressure at shutdown may not equal expected pressure
  • Lag time
  • Verifying the well is dead following kill procedure

Special Situations

• Blockages and Trapped Pressure in Tubing / Wellbore
• Blockages and Restricted Access in Tubing / Wellbore
• Hydrates
• H2S considerations
• Operations with Specific Well Control Concerns
  • Pressure Calculation Exceeding MASP
• Complication with Hydraulic Fracturing Operations
• Drilling Operations
  • Rig-up Complications
• Wireline Shear Seals
  • Cutting Wireline with Shear Seal
• Fishing Wireline
  • Well Control Action Drills

Course Topics - Day 4
Wireline PCE

• PCE Equipment, Strippers
  • Secondary PCE
• Christmas trees,
• Wireline valves
• Complications
  • Shears
• Personnel Assignments
• Pre-Recorded Information
• Plan Responses to Anticipated Well Control Scenarios
  • Emergency Response Plan
• Communications Responsibilities
  • Planning and outlining routine well control responsibilities

Testing

• Pressure and Function Tests
  • Purpose
  • Maximum safe working pressures of well control equipment
  • Low Pressure and High-Pressure Testing
• BOP Testing
  • Requirements for pressure testing
  • Performing pressure tests
• Testing of Completion Equipment
  • Packers
  • Deep-set Plug

Course Topics - Day 5
Well Control Drills

• Pit Drills
  • Purpose
  • Drill procedures
• Trip Drills
  • Purpose
  • Drill procedures
• Choke Drills
  • Purpose
  • Drill procedures

Government, Industry and Company Rules, Order and Policies

• Incorporate by Reference
  • API and ISO recommended practices, standards and bulletins pertaining to well control
  • Regional and/or local regulations where required
  • Company/operator specific requirements where required

Ancillary Considerations

• Gas Detection
  • Purpose and location
• Fluid-Gas separators
  • Purpose and location
  • Operating parameters
• Wellhead Control Panel
  • Operation of Control Panel
  • Difference surface to subsea
  • Simulator Practice/ test practice online
• Testing

Practical Session

• Shall verify skills using table top exercises and interactive digital simulation.

Training Center Provided Material

• Course Materials

Delegate Requirements

• None

Reference Material / Documents
IADC WellSharp
API STANDARD 53
API 16 ST
30 CFR 250.617