INTRODUCTION TO WELLBORE POSITIONING

This comprehensive industry reference e-book has been created by the leading experts in wellbore surveying. Overseen by Professor Angus Jamieson and the University of the Highlands and Islands, this resource is the gold standard of industry knowledge about the art and science of wellbore surveying, surveying technologies, survey accuracy, survey errors, and best practices.

Wellbore Positioning is a thorough technical guide dedicated to the science and engineering of accurately determining the position of wellbores in the subsurface. Designed for professionals in the oil and gas industry, this book explores critical topics including survey measurement techniques, uncertainty modeling, magnetic and gyroscopic tools, and anti-collision strategies. By presenting both the theoretical foundations and practical applications of wellbore surveying, it equips readers with the knowledge needed to improve well placement, optimize drilling efficiency, and ensure safety. This updated edition reflects industry standards and advancements, making it an essential resource for directional drilling engineers, survey specialists, and geoscientists.

INDUSTRY STANDARD 3-D TORTUOSITY INDEX CALCULATION METHOD

Angus Jamieson, on behalf of ISCWSA, performed a thorough analysis of the various methods for calculating tortuosity. His work has resulted in the 3-D Tortuosity method in the attached in this PowerPoint presentation. This method has been used extensively over the last few years by Angus in his work with major oil and gas clients and is currently implemented in the INNOVA software platform.

We invite all companies to add this simple functionality to their software. The text file containing the code is found in this link. The only modification required is for survey frequency less than 90 feet, where a simple correction for course length can be added.

The IADD hereby recommends this as the industry standard for all tortuosity assessments. This is public domain and no rights are reserved.