Drill String Design

DURATION
3 Days
COURSE
943645
AVAILABLE FORMATS / LOCATION
Islamabad
Instructor
Dr. Qamar Sharif
Oil and Gas Industry Executive

About Course

The course is designed for drilling operational staff and drilling engineers. The course provides a comprehensive treatment of drill string design, downhole drilling dynamics, and the avoidance of operational problems.


Course Outline

  1. Introduction to Drill String Design
    • Overview
    • Purpose of Drill String
    • Drill String Components
    • Drill Pipe Descriptions
    • Bottom Hole Assembly (BHA)
    • Exercise
    • Weight on Bit Design
  2. Mechanical Properties of Drill String
    • Basic Concepts
    • Deformation and Elongation
    • Hook’s Law
    • Moment of Inertia
    • Yield Strength
    • Collapse Pressure
    • Burst Pressure
    • Safety Factors
    • Maximum Over Pull (MOP)
  3. Drill String Dynamics
    • Torque and Drag
    • Free body diagram
    • Buoyancy
    • Forces on Submerged Tubular
    • Shock Loading and Stick Slip
  4. Calculations for Drill String Design
    • Stiffness
    • Weight on Bit (WOB)
    • Neutral Point
    • Buckling
    • Axial Forces and Buckling in Submerged Tubular
    • Exercise
  5. API RP7G
    • Introduction
    • Drill String Design
    • Operating Limits
  6. Drilling Jars
    • Purpose of Jars
    • Types of Jars
    • How Jars Work
    • Use of Jars
    • Exercises
  7. Drill Pipe Specifications
    •  Steel Grade
    • Types of Connections (Tool Joints)
    • Classification
    • Exercises
  8. BHA Selection Process
    • Drill Collars
    • Heavy Weight Drill Pipes
    • Drill Pipes
    • Bending Stiffness
    • Stress Relief
  9. Drill String Failures and Prevention
    • Types of Failures
    • Thermal Stresses
    • Fatigue and Overload
    • Inspection
    • Care and Prevention
  10. Overview of DS-I
    • Technical Data
    • Tables
    • Exercises
  11. Advances in BHA Components
    • Adjustable Gauge Stabilizers
    • Rotary Steerable Systems (RSS)
    • Hybrid RSS

Class Schedule