E-Learning Course 2: Drill Bits & Drillstring

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Drilling Training
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Training Calendar

Training

Welcome to IDEAS E-Learning 

There are many advantages to E-Learning! Key among them are :-

  • You can study in your own time and at your own pace;
  • You can repeat sections time and again until you understand things clearly;
  • There are no travel or hotel costs involved;
  • If you work offshore you do not have to go to training courses in your time off.

Please note that inter-action with the tutor is still possible, just as it is in class, through individual calls via Skype for example or e-mail / social media sites.

Course Objective

The objective of this course is to help people to understand the major components of the Drill-string starting with the whole range of drill bits available for the drilling of different types of rock through to the BHA (Bottom Hole Assembly) which includes stabilisers, NMDC’s (Non-Magnetic Drill Collars), MWD (Measurement While Drilling) tools, LWD (Logging While Drilling) tools, PDM’s (Mud Motors), Rotary Steerable Systems, Turbines, Drill Collars, Jars, HWDP and Drill Pipe.

It cross-references the IADC Drilling Manual, API Standards & Recommended Practices, NACE, the Drilling Data Handbook, and Manufacturer’s Information & General Industry Data.  It also gives delegates further sources of information to pursue should they have a particular, more detailed interest.

SECTION 1: DRILL BIT TYPES & SELECTION

In Section 1 we look at, in a general sense, the types of drill bits available and their selection.  Specifically we cover :-

  • The History & Background Behind Drill Bits
  • Bit types & Classification (Roller Cone / Rock Bits; Fixed Cutter Bits)
  • Key Drivers Behind Bit Selection (Geology, Rock Compressive Strength, Cost per Foot, Vibration, Drift, Overall Performance)
  • Potential Problem Mitigation (Destructive / Premature Wear etc.)

SECTION 2: ROLLER CONE / ROCK BITS

In Section 2 we look at Roller Cone / Rock Bits in detail, specifically :-

  • Type 1: Mill Tooth Cutter Bits:- Cutters, Cones, Gauge, Bearings, Nozzles, Classification, Potential Problems, Dull Bit Grading
  • Type 2: Tungsten Carbide Insert Cutter Bits:- Cutters, Cones, Gauge, Bearings, Nozzles, Classification, Potential Problems, Dull Bit Grading

SECTION 3: FIXED CUTTER BITS

In Section 3 we look at Fixed Cutter Bits in detail, specifically :-

  • Type 1: PDC & TSD Cutter Bits:- Cutters, Blades, Junk Slot Area, Flow-by Area, Nozzles, Performance, Potential Problems, Dull Bit Grading
  • Type 2: Natural Diamond Bits:- Diamonds, Blades, Gauge, Flow-by Area, Performance, Potential Problems, Turbine Usage, Cost
  • Type 3: Impregnated Bits:- Cutters, Blades, gauge, Flow-by Area, Performance, Potential Problems, Turbine Usage, Cost

SECTION 4: SPECIALIST BITS

In Section 4 we look at Specialist / Specialised Bits, specifically for the following areas :-

  • Side-track
  • Hard Rock
  • Coring
  • Anti-Whirl Coring
  • Drill-Core
  • Whipstock
  • Jetting
  • Turbine
  • Eccentric
  • Running Casing Whilst Drilling
  • Casing Shoe Drill-Out

SECTION 5: BIT NOZZLE SIZING & HYDRAULICS

In Section 5 we simplify the rather complex subject area of Bit Nozzle Sizing & Hydraulics.  We look at the following areas :-

  • Bit Hydraulics Optimisation
  • Specialist Hydraulics Presentations
  • Determining Flow Rate
  • Hole Cleaning Charts
  • Determining TFA – Total Flow Area
  • Determining Nozzle Size
  • Jet Impact Force Model – And When to Use It
  • Hydraulic Horsepower – And When to Use It
  • Mud Rheology Effects

SECTION 6: DRILLSTRING DESIGN

In Section 6 we look at why Drillstrings are designed as they are.  This is often a difficult area to understand in its entirety and so the section has been broken down into its constituent components so that the subject can be readily understood.  We look at the following areas :-

  • Basic Components Listing
  • Buoyancy & Neutral Point
  • String Weight
  • Number of DC’s (Drill Collars) and HWDP (Heavy Weight Drill Pipe) required to give sufficient WOB (Weight to the Bit)
  • Margin of Overpull
  • Maximum Drill Pipe Length Before Tensile Failure Occurs
  • Maximum Make-Up Connection Torque
  • Bending Strength Ratio
  • Bit Walk / Stabilisation / NMDC’s (Non Magnetic Drill Collars)
  • Jar Placement

SECTION 7: DRILLSTRING STANDARDS

In Section 7 we look at the standards Drillstring steels are manufactured to and the standards to which Drillstring components should be maintained :-

  • Properties of OCTG (Oilfield Country Tubular Goods)
  • Drillpipe Terminology
  • Stress – Buckling, Tension & Torsion
  • Damage
  • Stress Relief – Stress Relief Groove, Bore-Back Box
  • Corrosion
  • Poor Practices Offshore
  • Preventing BHA / Drillstring Twist-offs, Washouts, Parted Strings 

SECTION 8: DRILLSTRING CARE & INSPECTION

In Section 8 we look at API Standards & Specs as well as IADC Standards :-

  • API Standards for Pipe Inspections
  • API 5DP; API Spec 7-1; API Spec 7-2
  • Care & Handling of Tubulars
  • Safety First When Handling Tubulars
  • Preparing to – and Picking-up – the BHA
  • IADC Standards
  • Reference to the IADC Manual

SECTION 9: DRILL PIPE BODY & CONNECTIONS

In Section 9 we look at the following :-

  • API Drill Pipe
  • Double Shouldered Connections
  • Landing String
  • Intelli-pipe

SECTION 10: DRILLSTRING DYNAMICS

In Section 10 we look at how severe Drillstring Dynamics can cause Drillstring Failure – and what can be done to avoid failure :-

  • Preventing Failures
  • Shock & Vibration
  • Axial, Lateral, Torsional, BHA Whirl, Stick-Slip & Eccentric
  • Mitigating Shock & Vibration
  • Shocks Whilst Drilling, Reaming, Pick-up Off Bottom Prior to Making a Connection

SECTION 11: DIRECTIONAL BHA DESIGN

In Section 11 we spend considerable time looking at Directional Drilling Assemblies – both their design and how they are utilized.

  • Background Development
  • Example Well Designs (Which Drive the BHA’s Design)
  • Deflection Techniques
  • Whipstock, Rotary BHA’s, Motors, Turbines
  • Geo-Steering
  • Horizontal Drilling
  • Rotary Steerable BHA’s
  • Assemblies for Multilateral Drilling
  • Operator personnel who are commencing a career offshore as Offshore Drilling Engineer or Trainee Drilling Supervisor;
  • Drilling Contractor personnel who are on “fast-track” accelerated learning programs from young graduate or pump-man through to Assistant Driller; Drillers; Toolpushers or Performance Toolpushers who are involved with “Turn-key” or “Performance” contracts;
  • Service personnel who wish to broaden their knowledge and understanding of Drilling Systems;
  • Delegates who are in another industry or full-time education who envisage joining the Drilling Industry.

Thank you for showing interest in our courses!

Currently, this course is not available for online registration. Please fill up your contact details and we will inform you when the course is available for registration.