Saint Petersburg 2018

Innovations in Geosciences – Time for Breakthrough

9 - 12 April
Saint Petersburg, Russia
Call for papers

Modern Geosteering Technologies

Monday 9 April (09:00 – 13:00)

Course summary

The course provides an opportunity to learn about the modern technologies used in horizontal well placement (geosteering).
The volume of horizontal drilling is growing every year, both in Russia and throughout the rest of the world. In view of this, the cost effective placement of horizontal wells in the pay zone has become vitally important. This objective is achieved through geosteering – a fast developing technology that comprises geology, geophysics, and drilling. Currently, over 60% of horizontal wells around the world are geosteered, and this percentage is constantly growing.
Modern geosteering approaches in combination with the analysis of data generated while drilling, help to reduce uncertainties and improve the accuracy of well placement by adjusting bed geology in real time.
This course covers all aspects of the geological supervision of drilling, starting from pre-job (selection of pilot wells, preliminary modeling, input of planned well trajectory, generation of synthetic log), to interpretation while drilling (adjusting the bed model and the position of the lateral), and post-job (analyzing the drilling results).
Extensive integration of geological and geophysical data, as well as data received while drilling, enables the construction of high-precision geosteering models, the accurate determination of lateral position, and timely adjustment of planned trajectory.

Course objective

The key objective of the course is to introduce participants to modern geosteering technologies implemented to increase the efficiency of horizontal well placement in the pay zone. The course covers theory and real-life examples of geosteering approaches used for horizontal well drilling in different reservoirs all over the world.

Сourse contents

1. Introduction.
2. Goals and objectives.
3. Challenges of horizontal well drilling: structural uncertainties, thin oil rims, proximity to interface (OWC).
4. Geosteering approaches and their technical features:
a. Model-based approach;
b. Strat-based approach;
c. Geosteering using azimuthal images;
d. Proactive geosteering; and
e. Chemo- and bio-stratigraphy approaches to geosteering.
5. Scales used for geosteering.
6. Multiwell and multilog geosteering.
7. Enhanced efficiency of well placement through extensive data integration: logs (MWD/LWD), pilot wells, mud logs, grids, image logs, seismic.
8. Building and adjusting geosteering models. Modeling complex geology (tectonic faults, pinch-outs, etc.).
9. Case studies of horizontal wells drilled in complex lithology in various locations around the world (sands, carbonate, limestone, coal beds).

Target audience

The course will be of interest to geologists, drilling engineers, geoscientists, and petrophysists engaged in drilling and well placement.


Basic knowledge of geology and well placement.

Kuvaev IgorIgor Kuvaev, VP Technology and co-founder of ROGII – developer of StarSteer, one of the most popular geosteering applications in the world.
Igor graduated from Lomonosov Moscow State University. From 2001 to 2014 Igor worked as a geologist and head of a development team on a number of reservoir development projects in various oil&gas fields in Europe, Asia, and North America. Since 2014, Igor has been involved in designing new geosteering technologies as well as business development at ROGII.
Igor has participated in geosteering projects of over 300 wells in Russia, Europe, North & South America, and Australia.
Author of 15 publications and patents.