Course Overview

Day-by-Day Outline

Day 1 – Fundamentals of BHA Components & Functions

• - Types of BHA configurations: slick, packed, pendulum, rotary steerable
• - Components: drill collars, stabilizers, jars, reamers
• - Functions of BHA elements for hole direction and stability
• - API standards and specifications for BHA tools
• - Exercise: Identify BHA configurations on schematic diagrams

Day 2 – Vertical & Directional BHA Design

• - BHAs for maintaining verticality and minimizing deviation
• - BHAs for build, hold, and drop sections
• - Dogleg severity (DLS) and its control through BHA design
• - Selection of stabilizer placement and spacing
• - Workshop: Design BHAs for vertical and build sections of a planned well

Day 3 – BHA Dynamics & Vibration Mitigation

• - Types of downhole vibrations: axial, torsional, lateral
• - Causes and effects of stick-slip, whirl, and bit bounce
• - BHA design considerations to reduce vibrations
• - Downhole measurement tools (MWD/LWD) for vibration monitoring
• - Exercise: Analyze vibration data and recommend BHA adjustments

Day 4 – Rotary Steerable Systems & Advanced BHAs

• - Principles of rotary steerable systems (RSS)
• - Differences between push-the-bit and point-the-bit systems
• - Integration of RSS into BHA design
• - Advanced tools: near-bit stabilizers, measurement subs, sensors
• - Workshop: Design a BHA with RSS for a horizontal well section

Day 5 – BHA Performance Optimization & Case Studies

• - BHA performance indicators: ROP, torque, DLS consistency
• - Optimization of weight on bit (WOB) and rotary speed (RPM)
• - Bit-BHA interaction and compatibility
• - Case studies: successes and failures in BHA design
• - Capstone Project: Develop a complete BHA program with design rationale for a complex well trajectory

Expected Learning Outcomes

•  Design BHAs for various directional objectives and formations
•  Apply principles of stabilization and tool placement for well control
•  Mitigate downhole vibrations through optimized BHA configurations
•  Integrate RSS and measurement tools into BHA design
•  Evaluate and optimize BHA performance for drilling efficiency