Courses
Courses Currently Being Offered:
Basic Structural Petrophysics Associated with Reservior Geomechanics Workshop
Basic Structural Petrophysics Associated with Reservoir Geomechanics
Workshop Level: Beginner
About This Workshop:
The purpose of this workshop is to introduce, in an overview fashion, the fundamental concepts of Structural Petrophysics associated with reservoir geomechanics. Structural Petrophysics examines how rocks react to stress (fold, fracture, fault, and/or compact) along with the intrinsic properties of rocks, the properties of fluids contained within the rocks and the stresses that the rocks and fluids endure. Reservoir geomechanics combines the disciplines of rock mechanics, in situ stress determination, and fault / fracture analysis. The consequences of rocks, and their contained fluids, reacting to stress can bring about numerous reservoir geomechanics concerns that range from borehole stability to faults and fractures capacity seal or conduct fluids.
The workshop is designed for those who wish to: (1) Familiarize themselves with some of the petrophysical tools and principles used to describe subsurface stresses and rock strength. (2) Review basic reservoir geomechanics applications.
Since this a workshop, participants are encouraged to bring examples/data for discussion.
You Will Learn How To:
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Estimate rock strength from wireline / MWD-LWD log measurements
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Estimate today’s in-situ stress state magnitudes
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Interpreter the basic elements of a borehole image log.
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Estimate today’s in-situ stress state direction
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Estimate effect of today’s in-situ stress state magnitudes and direction on natural and induced fractures / faults.
Course Content:
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Overview of Structural Petrophysics and its relationship with reservoir geomechanics and rock mechanics.
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Review of tectonic setting and structural elements (folds, faults, and fractures).
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Review of subsurface stresses: overburden (Sv), maximum horizontal (SH), minimum horizontal (Sh), and pore pressure (Pp).
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Total and effective stress
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Stress Polygon
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Review of rock strength: laboratory testing, wireline / MWD log measurements
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Estimating the magnitude of Sv.
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Estimating the magnitude and direction of Sh and SH.
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Estimating the stresses at the borehole wall for a vertical well and the ramifications for breakouts and drilling induced tensile cracks.
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Basic borehole image log interpretation.
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Interactions of today’s stress on faults and fractures (natural and induced).
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Review the importance “drilling history” data.
Dates of Workshop: To Be Announced
Tution: TBA
Milt Enderlin
Milt Enderlin is a Senior Structural Petrophysicist with the Gearhart Company based in Fort Worth, Texas. His present duties include developments of new downhole sensors/measurements associated with laboratory petrophysics along with training/mentoring of stress magnitude/orientation determination, rock strength estimation, log-core integration, dipmeter/borehole image analysis, and basic laboratory measurements. His tasks are focused on geologic and engineering applications of petrophysical integration, characterization of fractures for fluid flow potential, borehole stability, fault seal analysis, and rock physics. He has authored or co-authored 7 U.S. patents and numerous publications on dipmeter/image analysis, log-core integration, and a few other things. Milt holds a BS in Chemistry and in Geology both from Sonoma State University and is a member of SPWLA, SPE, AAPG, and SCA.
Direct any questions to info@gearhartcompanies.com