Applied Oilfield Geomechanics

By: Jörg Herwanger



Instructor

Dr Jörg Herwanger
(MP Geomechanics)

Duration

1–4 June 2021:
9:00AM-1:00PM CEST
4 hours/day

Disciplines

Reservoir Characterization

Level

Foundation

Language

English

EurGeol

8 CPD points



Keywords

4D SEISMIC CALIBRATION DISPLACEMENT FAULT RE-ACTIVATION MECHANICAL PROPERTIES MUD WEIGHT PORE PRESSURE STRAIN STRESS WELLBORE STABILITY

Course Format

The EAGE Interactive online short courses bring carefully selected courses of experienced instructors from industry and academia online to give participants the possibility to follow the latest education in geoscience and engineering remotely. The courses are designed to be easily digested over the course of two or three days. Participants will have the possibility to interact live with the instructor and ask questions.



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Course Description

3D geomechanical models are frequently used to assess the state of stress inside the Earth. Knowledge of the stress-state in a reservoir and the surrounding rock allows assessing the risk of reservoir compaction, wellbore failure, sanding, breach of seal integrity and fault re-activation amongst others. Three-dimensional seismic data and inversion models can be used in building geomechanical models and time-lapse (4D) seismic data provide a means of calibrating the dynamic behaviour of reservoir geomechanical models. The purpose of this course is to provide an overview of currently available workflows to build and run calibrated 3D and 4D geomechanical models, maximizing the use of seismic data.

By attending the course, participants will deepen their insight into each of the elements that comprise a 3D and 4D geomechanical model. Special attention is given to the way that seismic data assist in the process, what other data sources are required, how to calibrate geomechanical models and finally, how to interpret geomechanical models for a range of applications.



Course Objectives

The purpose of this course is to:
1. Provide an overview of the currently available techniques of building and calibrating 3D and 4D geomechanical models;
2. Demonstrate the interaction between rock properties, pore pressure and stress state;
3. Apply the knowledge of stress state from geomechanical models to field development and reservoir management;
4. Understand the limitations of current workflows and techniques and give a glimpse of the road ahead.



Course Outline

    • Introduction: Applications of geomechanics in the oilfield life-cycle.

    • Rock mechanical properties:
    - Elastic and strength properties;
    - How do you derive mechanical properties in practice.

    • Stress and strain tensors:
    - Workflow for building 3D and 4D geomechanical models;
    - Calibration of 3D geomechanical models using well-centric 1D geomechanical models;
    - Analysis and display of displacement vectors, strain tensors and stress tensors.


• Case studies:
- Building a 3D geomechanical model using seismic AVO inversion in an onshore tight gas reservoir;
- Geomechanical controls on hydraulic stimulation;
- Wellbore stability for inclined wells: Why inclined and horizontal wells behave differently from vertical wells;
- Multiple uses of 3D and 4D geomechanical flow models: Applications in a deepwater carbonate and clastic fields;
- Stress rotations during production and their impact on hydraulic stimulation.

Participants' Profile

Geomechanics projects integrate data and models from many different subsurface disciplines, including geophysics, rock mechanics testing, geology, geomodelling, rock physics and reservoir engineering. The course is designed for practising geoscientists and engineers and demonstrates how their discipline knowledge contributes to geomechanical modeling.

The course is also beneficial to students of petroleum geoscience (geophysics and geology). Finally, the course also appeals to managers of subsurface teams, increasing the appreciation of the complexity of the subsurface workflows that his or her team needs to address.



Prerequisites

This course is aimed at geoscientists and engineers with an interest in geomechanics, be their background in geology, geophysics, rock physics, reservoir engineering or geomechanics. The course was developed mainly with a practicing geophysicist or geologist in mind. The course has an emphasis on making the physics behind the presented techniques accessible and clear and will appeal to curious and inquisitive people. This course is also suited for Master’s and PhD students as the course (material) is designed in such a way that the principles of geomechanics become clear.

Geomechanics is still a relatively new discipline in the oilfield environment and is not taught as part of most university Geoscience-programs. Therefore a lot of graphic examples are included in the course material to aid intuitive understanding.



About the Instructor

Dr Jörg Herwanger

Jörg Herwanger is a Director at MPGeomechanics, a geomechanics consulting and software company he co-founded in July 2016. His work combines experimental observations and the development of mathematical models and workflows in seismic, rock physics and reservoir geomechanics. Working closely with clients and his team, he carries out 3D and 4D geomechanical projects, integrating 1D geomechanical models, seismic inversion methods, rock physics and pore pressure predictions into reservoir flow and geomechanical models. Previous companies he worked for included Ikon Science and Schlumberger. Before working in the upstream oil and gas industry, Jörg’s interest was in the development and computer implementation of tomographic methods to determine anisotropic electrical properties from observed crosswell data. He combined these newly developed techniques with anisotropic velocity tomography to detect and evaluate fractures. Jörg is a member of EAGE, SPE and SEG. He served as an EAGE Distinguished Lecturer from 2007-2009, and EAGE Education Tour (EET-5) Lecturer in 2011-2012, and is currently the EAGE Education Officer on the EAGE Board. For the EET-5, Jörg wrote the eponymous book on “Seismic Geomechanics”. Jörg holds a Diploma degree from Technische Universitat Clausthal, Germany and a PhD from Imperial College, London, U.K., both in Geophysics.





EAGE supports its members and the Geoscience community in general by offering a 35% discount on the regular prices for our Interactive online short courses during these difficult times.

€180

EAGE Member price

€250

Non-Member price

*Non-member price for this product does not include EAGE membership.



Economic Hardship Programme

EAGE also aims to assist its long-term members who are currently unemployed by offering a contribution towards educational programmes. Members who meet the requirements of the programme can attend any EAGE course for a discounted fee equal to €75. Click here to read more and apply.


Cancellation and Changes Policy

Registration fees will be refunded as follows:
  • Cancellation received before 18 May 2021: Refund will be processed after the event had ended. Amount will minus an administration fee of €35 per person.
  • Cancellation received on or after 18 May 2021: No refund will be made. 
  • Transferring of your registration to another participant will cost €35, as administration fee, plus any differences in delegate types, where applicable (for instance when changing a registration from a member to a non-member).
  • For an overview of all EAGE Registration Terms and Conditions please click here to download.