20171130 Stress Characterization

20171130 Stress Characterization

Geomechanical Characterization Lecture Series
←  SPE - Calgary Section

Geomechanical Characterization Lecture Series:
Stress Characterization

Date: Thursday, 30 November 2017
Speaker: Mr. Patrick M. Collins, BASc, MSc, P.Eng., Petroleum Geomechanics Inc. 
Location: SPE Calgary Office - Main Floor (715 5 Ave SW)
Time: 7:30 - 10:00 am
Cost: $20 SPE Members, $25 Non-members, $5 Students 


Rock stresses control how our reservoirs will respond to stimulation and production, whether they be in tight formations or oilsands and their surrounding formations. The accurate determination of rock stresses can be essential to a successful recovery process; their inaccurate determination can be catastrophic. The intent of this presentation is that attendees will become cognizant of the geomechanics that constrain stresses in their own reservoirs to within credible physical limits that are consistent with the geology and our operations, such that the rock stresses are accurate and recovery processes successful.

All rock is stressed. These stresses result from the rock’s depositional history, geomorphology, chemical and physical alterations such as tectonics, and lastly, by the changes imposed by us as we stimulate and produce the reservoir. Of these, the pre-existing rock stresses before any human intervention are the dominant stresses that affect the performance of the reservoir, whether it be hydraulic-facture stimulation or high-pressure injection of steam or solvents.

 This presentation will review how rock stresses are developed, how they are altered by natural and man-made changes, and how they are determined. Examples from western Canada will be provided as examples of what one should expect in typical reservoirs.

Speaker Bio:

Patrick Collins, P.Eng, is the president of Petroleum Geomechanics Inc., based in Calgary, Alberta. He has a BASc in Civil Engineering from the University of Toronto and an MSc in Geotechnical Engineering from the University of Alberta.

After working on the seminal AOSTRA Underground Test Facility’s SAGD pilots, Patrick consulted in reservoir engineering and geomechanics in Italy and the UK for several years before returning to Canada. He has over 35 years’ experience in heavy oil, oilsands, SAGD, CSS, and CHOPS; and in geomechanics related to drilling and completions, wellbore stability, caprock integrity, minifrac tests, rock stress analysis, formation overpressures, hydraulic fracturing, and sanding.

Patrick consults internationally in heavy-oil recovery and in geomechanics, and is an expert witness in heavy oil, thermal recovery, and geomechanics. He is a member of SPE, AAPG, CWLS, CSPG, CHOA, and APEGA.


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November 30, 2017
From 7:30 AM to 10:00 AM
SPE Calgary Office