Topic outline

  • Drill Bits

    This course provides an overview of all significant aspects and considerations of drill bits for junior drilling engineers, junior well and operations engineers as well as other personnel involved in well planning and drilling
    • Training Methodology & Objectives

      Training Methodology

      This Trainee-centered course includes the following training methodologies:-

      • Talking presentation Slides (PPT with audio)
      • Simulation & Animation
      • Exercises
      • Videos
      • Case Studies
      • Gamification (learning through games)
      • Quizzes, Pre-test & Post-test

      Course Objectives

      After completing the course, the employee will:-

      Apply and gain an in-depth knowledge on drill bits Recognize a wide variety of bit types including roller cone bits, fix cutter bits and specialty bits
      Identify roller cone bit features and describe cutting structure, bearings, hardfacing and seals Discuss tungsten carbide insert design, product technology, diamond tech2000 hardfacing, standard frame body, modular frame body and design as well as arm and shirttail design
      Ensure pressure compensation as well as describe grease reservoir, central ball race bearing, precision bearing “hard turn”, bearing and seal system and stabilization pads Recognize hydraulics system and Bit IADC codes
      Identify PDC bits, fixed cutter bit styles, common terminology Explain bit profile, bit profile influence on performance and back rake angle influence on performance
      Describe cutters development and cutters influence on performance Discuss drilling dynamics, vibrations and product lines that include PDC and diamond bits
      Identify steel body, matrix body, dual diameter, impregnated with GHI’s and fixed cutter bits Recognize PDC terminology and features as well as identify the components of bit profile
      Review deep and shallow cone profiles covering its advantages and disadvantages Determine nose radius and location from centerline
      Identify bit profile types, 4 general types, flat, short parabolic, medium parabolic and long parabolic Describe back rake angle, typical back rake angles, formation hardness, and design factors of back rake
      Determine the number of blades and PDC cutter size Discuss the general application guidelines, soft information, harder information and drilling dynamics
      Recognize drill string vibration, axial vibration, lateral vibration and torsional vibrations Illustrate rig geolograph and axial, lateral and torsional vibration remedies as well as change the drill string frequency
      Apply proper BHA design, restart the Bit and identify the types of whirl comprising of forward, backward and intermittent Identify downhole vibration tools, bit dull condition, mud type and additives and roller reamers in BHA
      Discuss drill bit technology as well as carryout drill bit and roller bit selection process Estimate compressive strength of the rock and classify engineering for “intact” rock
      Identify opportunities for PDC drill bits including the potential PDC application Discuss economics of Bit applications, cost per foot (CPF), bit selection process
      Recognize worn cutter, washed out bit, ring out, plugged nozzle, lost cutter, lost nozzle, lost matrix, junk damage and etc. Review IADC code roller cone comparison chart and roller cone availability chart that include insert bits and tooth bits
      Recognize drilling fluids and hydraulics as well as determine hydrostatic pressure of water and drilling mud Discuss Pascal’s law and fluid flow principles
      Measure flow and recognize deformation of a fluid by simple shear Illustrate fluid models, Newtonian, non-Newtonian, rotating sleeve viscometer or VG meter, stages of flow and bit pressure drop (psi)
      Determine pump pressure and the sum of system pressure losses Calculate and optimize hydraulics as well as identify bit hydraulic horsepower (BHHP) and jet impact force
      Discuss HHP theory and jet impact theory as well as differentiate max impact versus max bit HHP and bit HHP versus flow rate Carryout vortex nozzle analysis, technical approaches and CFD analysis of vortex nozzle
      Describe flow pattern around bit and hole, modular nozzle design and operating procedures/parameters Optimize WOB and RPM as well as employ drill-off tests, identification of problems and corrective actions
      Explain the purpose of Bi-Center bit, BHA stabilization, BHA modelling for Critical RPM’s and planning Bi-Center BHA runs
      • Course Description

        This E-Learning course is designed to provide participants with a detailed and up-to-date overview of drill bits. It covers the wide variety of bit types; the roller cone bit features; the tungsten carbide insert design and product technology; the pressure compensation; the hydraulics system and Bit IADC codes; the PDC bits, fixed cutter bit styles and common terminology; the bit profile influence and back rake angle influence on performance; the cutters development and cutters influence on performance; the PDC terminology, features and the components of bit profile; and the drilling dynamics, vibrations and product lines
        Further, the course will also discuss the deep and shallow cone profiles as well as its advantages and disadvantages; the general application guidelines, soft information, harder information and drilling dynamics; the drill string vibration, axial vibration, lateral vibration and torsional vibrations; the rig geolograph and axial, lateral and torsional vibration remedies; the proper BHA design, restarting of Bit and the types of whirl; the downhole vibration tools, bit dull condition, mud type and additives; the roller reamers in BHA; the drill bit technology and roller bit selection process; and the compressive strength of the rock estimation
        During this course, participants will learn the engineering classification for “intact” rock; the opportunities for PDC drill bits and the potential PDC application; the economics of Bit applications, cost per foot (CPF) and bit selection process; the IADC code roller cone comparison chart and roller cone availability chart; the drilling fluids, hydraulics, hydrostatic pressure of water and drilling mud; the Pascal’s law and fluid flow principles; the flow measurement and deformation of a fluid by simple shear; the pump pressure and the sum of system pressure losses; the calculation and optimization of hydraulics; the HHP theory and jet impact theory; the vortex nozzle analysis, technical approaches and CFD analysis of vortex nozzle; the flow pattern around bit and hole, modular nozzle design and operating procedures/parameters; the WOB and RPM optimization, drill-off tests, identification of problems and corrective actions; and the purpose of Bi-Center bit, BHA stabilization, BHA modelling for Critical RPM’s and planning Bi-Center BHA runs
        • Module 1 - Drill Bit Technology: Roller Cone

          Contents:
            • Wide Variety of Bit Types
            • Roller Cone Bit Features
            • Cutting Structure
            • Tungsten Carbide Insert Design
            • Product Technology
            • Arm and Shirttail Design
            • Bearing and Seal System
            • Bit IADC Codes
            • Video: Life of a Drill Bit
          • Module 2 - Introduction to PDC bits

            Contents:
              • Product Lines : PDC Bits
              • Fixed Cutter Bits
              • PDC Terminology & Features
              • Components of Bit Profile
              • Deep Cone Profiles
              • Shallow Cone Profiles
              • Nose Radius
              • Location From Centerline
              • Bit Profile Types
              • Video: Radius PDC - How To Tell If Your PDC Bit Needs Repair
              • Back Rake Angle
              • Typical Back Rake Angles
              • Design Factors – Back Rake
              • Number of Blades
              • PDC Cutter Size
              • Cutter Size
              • General Application Guidelines
              • Drilling Dynamics - Vibrations
              • Drill String Vibration
              • Axial Vibration
              • Axial Vibration: Recognizing
              • Axial Vibration: Remedies
              • Lateral Vibration
              • Lateral Vibrations: Types of Whirl
              • Lateral Vibrations: Recognizing
              • Lateral Vibrations: Remedy
              • Torsional Vibration
              • Torsional Vibration (Stick Slip)
              • Torsional Vibration: Recognizing
              • Torsional Vibration: Remedies
              • Summary: Drill String Vibration
              • Search for Stability Zone
              • Module Quiz
            • Module 3 - Drill Bit Selection

              Contents:
                • Which Bit to Choose?
                • Bit Selection Process Overview
                • Selection Process
                • Bit Selection Process -Details
                • Estimating Compressive Strength of the Rock
                • Engineering Classification for “Intact” Rock
                • Roller Bit Selection Table
                • Identify Opportunities for PDC Drill Bits
                • Identify Opportunities for Natural Diamond / Impregnated Drill Bits
                • Economics of Bit Applications
                • Cost per Foot (CPF)
                • Bit Selection Process - Summary
              • Module 4 - Dull Grade

                Contents:
                  • System Structure
                  • Tooth Height Measurement
                  • Identifying TCI and Milled Tooth Bit Rows
                  • Smith Tool Dull Grading Manual
                  • Geodiamond Dull Grading Manual
                  • Module Quiz
                • Module 5 - IADC BIT Chart

                  Contents:
                    • IADC Code Roller Cone Comparison Chart
                    • Roller Cone Availability Chart - Insert Bits
                    • Vibrations & Effects On Drilling Bits
                  • Module 6 - Bits (Fluids & Hydraulics)

                    Contents:
                      • Drilling Fluids & Hydraulics
                      • Max Impact Vs Max Bit HHP
                      • Bit HHP Vs Flow Rate
                      • Impact Force Vs Flow Rate
                      • Straight Nozzle Bore Increases Flow Efficiency
                      • Lab Scale Testing Facility
                      • Tests
                      • Drilling Fluids & Hydraulics
                      • Video: Drilling Fluid Functions
                      • Vortexx Nozzle Analysis
                      • CFD Analysis of Vortexx Nozzle
                      • Flow Pattern Around Bit and Hole
                      • Example Solution from CFD Simulation
                      • Modular Nozzle Design
                      • Module Quiz
                    • Module 7 - Bits (Procedures & Parameters)

                      Contents:
                        • Running into the Hole
                        • Drill Bit Operating Procedures & Parameters
                        • Video: Failed Liner Cementing Float Shoe Pressure Test
                        • Drilling Out of Shoes
                        • Breaking in a Bit
                        • Optimize WOB and RPM
                        • Drill-off Tests
                        • Identifying Problems
                        • Corrective Actions
                        • Summary of Bit Operations
                      • Module 8 - BiCenter

                        Contents:
                          • Bi-Center Bits
                          • What is the purpose of a Bi-Center Bit?
                          • Bi-Center Bit Casing Shoe Drill Out
                          • Bi-Center BHA’s
                          • BHA Stabilization
                          • Bi-Center Stabilizers
                          • Competent Formations
                          • Bi-Center Bit Problems
                          • Log Quality Example
                          • Vibration
                          • BHA Whirl
                          • BHA Modeling for Critical RPM’s
                          • Effective Length
                          • Mudmotors
                          • Off Bottom
                          • Planning Bi-Center BHA Runs
                          • Bi-Center Bits (BHA examples)
                          • DK 495 Dukhan Qatar
                          • HRDH-1702 Saudi
                          • Video: Smith Bits - Bi-Center Bit Quad D Tech
                          • Module Quiz
                        • Post-Test

                          Kindly complete the post-test to assess your knowledge about the topic after the course.