Stuck Pipe Prevention
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Stuck Pipe Prevention Course
Introduction:
This course is designed with the simple phrase in mind: “Prevention is better than Cure”. The course provides a comprehensive understanding of three stuck pipe mechanisms, causes leading to each mechanism, and recognition of warning signs. Participants will learn how to perform the trend analysis and learn to “listen to the well” by understanding the “language of the well.” The course includes a stuck pipe mechanism identification table and recommends the first actions for each mechanism. Stuck pipe case histories are included to enhance learning. The course also covers knowledge of the formations and borehole instability problems and recommends guidelines to empower the driller on best tripping practices.
Course Objectives:
At the end of this course participants will:
- Identify the three sticking mechanisms and their causes
- Recognize the sticking causes at an early stage and what preventive actions to take before full sticking develops
- Understand the fundamentals of hole cleaning
- Discover techniques on stuck pipe prevention
- Learn to “listen to the well”
- Perform trend analysis of drilling parameters
- Read a stratigraphic column with identification of potential problem formations
- Review case histories with in-depth analysis.
- Understand the workings of drilling jars, pump open force, and jarring load calculations
- Appreciate the team approach and the need for good communication
- Identify the sticking mechanism and what “First Actions” to take to free a stuck pipe
Who Should Attend?
- Drilling crews
- Rig Managers
- Drilling Foreman
- Drilling engineers
- Mud engineers
- Wellsite geologists
- Directional drillers
- Drilling contractors staff
Course Outlines:
Introduction to Oil & Gas Drilling
- Oil and gas development
- Formations, rock pressure, fluid traps
- Fundamentals of petroleum
- Basic geology
Major Causes of Lost Time
- Definitions
- Global statistics
- Stuck pipe causes and mechanisms
Rock Mechanics
- Stratigraphic column
- Deviated and horizontal wells
- Wellbore stresses and instability
- Drilling window
- Drilling fluid properties and mud weight
Identification of Sticking Mechanisms
- Use of identification table
- Hole pack-off / bridging
- Wellbore geometry
- Differential sticking
- “First Actions”
Drilling Jars
- Types of drilling jars
- How jars work
- Pump-open force
- Calculation of jarring loads
- Why jars don’t work
- Jars placement
Hole Pack-Off / Bridging
- First mechanism
- Causes
- Drilled cuttings – bit
- Caving – not from bit
- Causes of insufficient hole cleaning
- Annular velocity
- Hole angle
- Boycott effect
- Pipe rotation
- Hole cleaning guidelines
- “First Actions”
- Causes of bore hole instability
- Tripping guidelines
Well is Talking
- Drilling parameters recording
- “Learning to Listen” – trend analysis
Wellbore Geometry
- Second mechanism
- Causes
- Key seating
- Ledges and doglegs
- Under-gauge hole
- Collapsed casing
- Junk
- Shoe joint back-off
- “First Actions” FIRST ACTIONS
Differential Sticking
- Third mechanism
- Fire prevention triangle and differential sticking prevention square
