Directional, Horizontal and Multilateral Drilling
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Program Professional Framework
Directional, Horizontal and Multilateral Drilling
Program Overview
Directional and horizontal wells are standard in Gulf fields, where thin carbonate layers, offshore platforms and artificial islands demand precise trajectories and maximum reservoir contact. This course covers well trajectory design, survey calculations with the minimum curvature method, survey uncertainty and anti-collision management, BHA design with motors and rotary steerable systems, torque, drag and hydraulics in high-angle wells, geosteering in thin reservoirs, and multilateral junction design using the TAML classification. Participants plan trajectories and BHAs and learn to manage risks from kick-off to the lateral.
Learning Outcomes
- ✓Design a directional or horizontal well trajectory that meets target, dogleg and completion constraints.
- ✓Calculate well positions from survey data using the minimum curvature method.
- ✓Assess survey uncertainty and apply separation factor rules for anti-collision.
- ✓Select BHA configurations with motors or rotary steerable systems for build, hold and lateral sections.
- ✓Model torque, drag and hole cleaning requirements for high-angle and horizontal sections.
- ✓Compare multilateral junction types using the TAML classification and select a suitable design.
Target Audience
- Drilling engineers and well planners
- Directional drillers and MWD engineers
- Drilling supervisors
- Geologists and geosteering specialists working on horizontal wells
Detailed Program Modules
01Directional Well Planning
- Applications and well profile types
- Kick-off point, build rates and targets
- Dogleg severity limits and completion constraints
02Surveying and Anti-Collision
- Survey tools and minimum curvature calculations
- Survey uncertainty and error models
- Separation factor and anti-collision rules
03Directional BHAs and Tools
- Steerable motors and rotary steerable systems
- BHA design for build, hold and drop
- Bit selection for directional sections
04Horizontal Wells
- Landing the well and lateral placement
- Geosteering in thin reservoirs
- Torque, drag and hole cleaning at high angle
05Multilateral Wells
- Applications and reservoir contact benefits
- TAML classification of junctions
- Junction construction and re-entry
06Risk Management and Performance
- Common directional drilling problems
- Casing running in high-angle wells
- Performance review and lessons learned
Training Methodology
Applied Project & Assessment
Applied Project
Participants plan a horizontal or dual-lateral well for a provided Gulf carbonate target, delivering the trajectory and survey programme, an anti-collision check, BHA proposals by section, a torque and drag summary and a junction recommendation where applicable.
Assessment
Short diagnostic at the start, practical tasks linked to each learning outcome, and evaluation of the applied project against published criteria.