OPERATIONS GEOLOGY DIVISION

Upcoming Division Talks

Qualitative Comparisons of Surface Deformation over a SAGD Reservoir in Alberta
Dennis Ellison, M.Sc., G.I.T. | Sound QI Solutions Ltd.

January 23 | 12:00 noon 
geoLOGIC Room (2nd Floor), Aquitaine Tower, 540-5th Avenue S.W., Calgary

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ABSTRACT

Interferometric Synthetic Aperture Radar (InSAR) is becoming a more desirable method to monitor surface deformation, in particular, ground heave in the oilsands related to thermal SAGD operations. Devon has licensed data from TRE-Altamira using the RADARSAT-2 satellite, which collects roughly 9 usable images each year to calculate deformation. Surface deformation has been used to monitor pressure changes in conventional reservoirs and carbon sequestration and is primarily thought as a method to understand and monitor caprock integrity in oilsands production. Previous efforts (Granda et al, 2012) have shown that surface deformation can be correlated with steam injection rates. Others (James et al, 2012) have also shown that surface deformation can be used to map the steam chamber. However, there are discrepancies when surface deformation is used to infer steam chamber thickness. These differences can provide further insight into reservoir production and quality. 

Although surface deformation and seismic time delays are both results of thermal SAGD operations—thermal expansion and increased pressure—are they impacted differently, and how much? Surface deformation is driven by thermal expansion & pressure increases and seismic time delay by fluid substitution. This qualitative interpretation of these observations can grant us further insight into the quality of the reservoir we are producing, pad conformance and allow us to characterize different styles of low performing reservoirs. We may also be able to infer the degree of depletion by using the surface deformation growth curve.

BIOGRAPHY
Dennis Ellison has been working as a Geophysicist for over 5 years. He has recently completed his M.Sc. while working at Sound QI Solutions where he continues to learn and apply himself technically to enhance the value of his client’s seismic data. His career started in depth imaging of geologically complex land data and transitioned into Reservoir Characterization and Quantitative Interpretation focussing on unconventional geological property prediction. In 2017, he received Best Student Oral Presentation - Honourable Mention by the GeoConvention and Outstanding Volunteer in 2016 from the CSEG. Dennis actively volunteers with ENERGYminute, CSEG Foundation, APEGA, and Scouts Canada. Broad experience: major and junior oil & gas companies, and seismic service companies; professional associations; regulatory agencies; education/research institutes; consulting firms.

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Venue space supported by: 

February Division Talk
Canadian Well Identifier System, what does it mean for you?


Floy Baird/ President, Calgary Geoscience Data Managers Society
Sue Carr/ Past-President, Calgary Geoscience Managers Society | Katalyst Data Management.

February 20th, 2019 | 12:00 noon 
geoLOGIC Room (2nd Floor), Aquitaine Tower, 540-5th Avenue S.W., Calgary

Let us help you track your CPD 
Register for free and CSPG members will have their CPD tracked under their account

Division Profile

Division talks are held monthly. They are free of charge. No registration is required, and talks are open to the public. There will be a door prize, light snacks and coffee provided by sponsors. Attendees are welcome to bring their own lunch. 

Please visit our LinkedIn Group discussion page at: https://www.linkedin.com/groups/13525146

Operations Geology is an important sub-discipline of the practice of geology. As it pertains to petroleum geology, we include any geoscientist managing drilling operations from the office/home (including planning wells) and geosteerers. Operations geologists are uniquely involved in the drilling of a well from the initial planning stages to long after TD and the data have been properly distributed to stakeholders and/or lookbacks have been held.

Knowledge of one’s geological targets (conventional, heavy, or unconventional) is more important than it has ever been for well placement optimization, especially considering the introduction of new technology, such as horizontal drilling and multi-stage fracture stimulation. Beyond the typical geological capacity and experience, knowledge of stakeholder management, regulatory process and approvals, well planning, drilling processes, reservoir engineering, petrophysics, production, wellbore analysis technology, etc are also vital to the role of the operations geologist. These disciplines are commonly in conflict during drilling so prioritization and compromise of the well's objectives is also a skill.

Communication is another vital skill set of the Operations Geologist. Not only does the Operations Geologist communicate with their drilling engineer, directional driller, wellsite geologist (if present), and geosteerer (if present), but communication with their subsurface team, logging team, internal and external regulatory groups, as well as other internal and external stakeholders are also critical to drilling success. A common misperception is that Operations Geology is not its own discipline, the above paragraphs prove that while the Operations Geologist is truly a generalist, there are skillsets that are unique to the Operations Geologist beyond taking well calls in the middle of the night.

Topics may include, but are not limited to:
● The role of an Operations Geologist in safety.
● Questions to ask your wellsite geologist to aid in your collective interpretation of well data.
● Reading/interpreting striplogs, cuttings, cuttings technology
● Basic training/discussion of geosteering software
● Critical Regulatory knowledge (ie: D56)
● Best practices: dealing with unforeseen events, stuck pipe, collapsed hole, etc.
● Logging technologies, open hole, mwd, lwd
● Communication with drillers, directional hands, etc
● Drilling technologies
● Stakeholder management
● Geohazards-identification, mitigation, avoidance
● Data QC/QA - is that well really sour?
● Pore Pressure/Fracture Gradient prediction
● H2S Analysis and Regulatory Requirements for sour wells
● Data management and reporting

Committee Members

Division Chair: Kurt Armbruster, P. Geol. | email: kurt.eh@gmail.com

PAST PRESENTATIONS

September 26, 2018

ProactiveGeosteering with 3D Geo-models: How Operations Teams Save on Capital and ImproveWell Results
Rocky Mottahedeh | CEO United Oil & Gas Consulting and SMART4D Geosteering & Geomodelling Software


March 15, 2018

Can Geomechanics Improve Your Drilling and Completions? Spoiler Alert – Yes. (.pdf)
Amy Fox | Enlighten Geosciences

February 14, 2018
Geosteering: what works, what doesn't? (.pdf)
Calin Dragoie | Chinook Consulting Services