Objectives
Attendees will learn UTM and grid coordinates, how to design directional wells, horizontal and multilateral wells, and understand BHA’s, MWD, surveying equipment, survey calculations, and error quantification.
Course Content
- Reasons for Directional Wells
- Declination and Convergence
- UTM & Grid Coordinates
- Factors Affecting Hole Deviation Including Formation and Drillstring Factors
- Bottomhole Assemblies and Placement of Stabilisers
- Survey Reference Points
- Calculations and Wellpath Plotting
- Surveying Tools and Accuracy
- Types of Directional Wells: Types 1, 2, and 3 with Calculations
- Kick-Off Points, Build-Up and Drop-Off Rates
- MWD and LWD
- Drillstring Design
- Directional Drilling Techniques: Wellpath Design Calculations, Course Corrections, Tools
- Designing Horizontal Wells: Kick-Off Points, Tangent and Landing Sections
- Long-, Medium-, and Short-Radius Wells, Extended Reach Wells, S-Bend Wells
- Multilateral Designs
- Joints Integrity
- Complete Well Planning Exercises
- Cluster Wells
- Collision Analysis
- Survey Errors and Quantification of Error Sources
- Ellipsoid Descriptive Equations
- Spider Plots & Travelling Cylinder
- Drillstring Design:
- Drill Pipe Selection
- Drill Collar Selection
- Buoyancy Factor Method: Procedure for Selecting Drill Collars
- Heavy-Walled Drill Pipe (HWDP)
- Stabilisers
- Drilling Jars
- Shock Subs
- Drillstring Design Criteria and Dogleg Severity Analysis
