DAY 01 - Module 1: Causes of stuck pipes.
- Human activities and factors that may lead to stuck pipes.
- Deferring from set-out procedures.
- Tour change issues (most stuck pipe situations happen here)
- Lack of team coordination
- Lack of proper and efficient communication
- Lack of adequate planning
- Failure to read and interpret warning signs.
- Use of tour change form to record conditions and identify the current trends.
Module 2: Wellbore Stability
- Clay chemistry
- Chemical interaction in the wellbore
- Well site analysis.
- Physical interactions
- The Earth’s stresses.
- Shale deposition and sedimentary rocks
- Well site analysis.
- Mechanical stress failure
- Mechanical conditions
DAY 02 - Module 3: Rock Mechanics
- Drilling fluid effect on the borehole stability
- Mechanics and causes of faulting and fractures.
- Induced factors affecting borehole stability.
- Shale stabilization
- Geo mechanics and structural geology
- Causes of folding and their mechanics
- Borehole stability.
Module 4: Introduction to Stuck Pipe
- Causes of stuck pipe
- Problems formation
- Definition of stuck pipe
- Reading and interpreting warning signs
- Responding to warning signs
- Mechanical causes of stuck pipes
- Cause of downtime
- Human error – mainly lack of adequate communication.
- Why stuck pipes are preventable.
DAY 03: Module 5: Sticking Types
- Casing problems
- Key seating
- Wellbore Geometry
- Inadequate hole cleaning
- Cement problems
- Junk in the holes
- Reactive formations
- Cause for most stuck pipe situations
- Geopressured formation
- Mobile formations
- Mechanical sticking
- Unconsolidated formation
- Differential sticking
- Drilling overbalance (most common cause)
- Formational sticking
- Fractured formations
- Faulted formations
DAY 04: Module 6: Differential Sticking
- Rotate
- Seal the wellbore.
- Mud formation
- Avoiding differential sticking
- Circulate
- Drill string flexing definition
- Moving the drill string up and down
- Definition of differential sticking
- Controlling the well pressure
- Efficient communications
- Filter cake definition
- Removing cuttings
- Circulating enough fluids in the hole
- Most common occurrence of differential sticking
Module 7: Fishing Operations
- Overshoot
- Reserve twists
- Small explosive charge
- Washing over
- Sidetracked hole
- Plugging the hole
- Adding Jars to Fishing String
- Fracture joining
- Drill collars
- Drill pipes
- Twist off cases
- Free point indicator
DAY 05: Module 8: Broken Bit Cases
- Using different bits
- Using a hollow basket
- Using magnet for fishing
- Break way of one of the conical cutters and leg down the hole with bearing
- Using explosive charge for too large pieces of metals
Module 9: Warning Signs
- String weight changes
- Pump pressure changes
- Changes at the Shakers
- Name the mechanism – simulations.
- Gather clues.
- Torque changes
- Geometry mechanism
- Differential mechanism
- The hole is talking.
- Circulation rate changes
- Mud properties
- Three mechanisms
- Bridge mechanism
- Hole pack-off mechanism
Module 10: Prevention Plan
- Differential
- Wellbore Geometry
- Hole pack
- Bridging
- Review of three stick mechanism
- Developing a stuck pipe prevention plan
- Hydraulics
- Shaker hand should communicate.
- Mud logger examining cuttings to communicate with the driller.
- The mud must be ready and conditioned properly.
- Teamwork and communication
- Chemical mixing agents
- Case study
