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Advanced Directional Drilling and Fishing Operations

Introduction

Advanced Directional Drilling and Fishing Operations

Course Overview:

This course details the necessary basics for the planning and construction of directional, horizontal and multilateral wells. Those trained will be able to manage UTM and grid coordinates, wellpath designs and specifications of bottom hole assemblies (BHAs). Aspects of survey calculations, estimation of errors and directional techniques also form part of the drill. Participants will acquire skills on the evaluation of fishing operations and choice of right tools during well intervention. Practical work and case studies will improve practical skills. Suitable for drilling engineers, completion engineers and personnel from service companies.

Course Objectives:

Attendees will learn:

• UTM and grid coordinates,
• How to design directional wells, horizontal and multilateral wells, understand BHA’s, MWD, surveying equipment, survey calculations and error quantification.
• Identify major fishing equipment.
• Diagnose the fishing operation and choose the appropriate fishing tools for the job.

Who Should Attend?

Drilling, completion engineers, supervisors and service company personnel

Course Outlines:

• Reasons for directional wells
• Declination and Convergence
• UTM & Grid coordinates
• Factors Affecting Hole Deviation Including Formation and Drill string Factors.
• Bottom hole assemblies. Placement of stabilizers.
• Survey Reference Points
• Calculations and Well path Plotting
• Surveying Tools and Accuracy
• Types of Directional Wells: types 1, 2 and three and calculations.
• Kick off Points, Build up and Drop off Rates
• MWD and LWD
• Drill string design
• Directional Drilling Techniques: Well path Design Calculations, Course Corrections, Tools
• Designing horizontal wells: kick off points, tangent and landing sections
• Long-, Medium-, & Short-Radius Wells; Extended Reach Wells, S-Bend Wells. Multi lateral designs. Joints integrity.
• Complete Well Planning Exercises
• Cluster Wells
• Collision Analysis
• Survey Errors, Quantification of Error Sources
• Ellipsoid Descriptive Equations
• Spider plots & travelling cylinder
• Drill string Design: Drill Pipe Selection, Drill Collar Selection
• Buoyancy Factor Method: Procedure for Selecting Drill collars
• Heavy-Walled Drill pipe (HWDP), Stabilizers, Drilling Jars, Shock Subs
• Drill string Design Criteria, Dogleg Severity Analysis
• Casing strength and tool strength specification
• Milling tools and assembly
• Hole cleaning and swarf removal
• Window milling
• Milling junk
• Standard fishing tools
• Fishing operations
• Fishing economics
• Free point indicator
• Explosive charges
• Torque calculations
• When to give up 
• management decision statements 
• When to quit?
• Different options of fishing.