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 and wear on equipment following the API recommended practices for design and operating limitations as well as the standard DS1 for design and inspection. The course starts with refreshing the engineering fundamentals and developing a sound understanding of the practical aspects and necessary considerations for design. These elements are put into practice and reinforced with a range of classroom exercises to consolidate the learning.

The emphasis is placed on practical engineering calculations and safe operating procedures. Industry standards are used as training aids to supplement the presentation material and provide a thorough understanding of the subject.


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

Date:

April 11th, 2023 to April 13th, 2023

Time:

09:00 AM - 05:00 PM PK

Location:

Islamabad

Date:

July 11th, 2023 to July 13th, 2023

Time:

09:00 AM - 05:00 PM PK

Location:

Islamabad

Date:

October 10th, 2023 to October 12th, 2023

Time:

09:00 AM - 05:00 PM PK

Location:

Islamabad