Learn! Blog

The uptick in earthquakes corresponding with increased drilling and produced water disposal has been of great concern. Seeking scientific understanding of the reasons for increased seismicity and determining whether or not it has been induced by human activity has been a key focus. Welcome to an interview with Jeremy Boak, Ph.D., Director of the Oklahoma Geological Survey, which has demonstrated leadership in investigating induced seismicity.

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American Association of Petroleum Geologists (AAPG)
Explorer President’s Column

Many years ago, I was on the undergraduate Columbia College eight man rowing team in New York. As I think back fondly on those college days, I realize that I learned a lot from my crew team experience on guiding and leading people. I learned that “leadership” is doing the right things, while “management” is doing things the right way. AAPG needs both.

American Association of Petroleum Geologists (AAPG)
American Association of Petroleum Geologists (AAPG)
American Association of Petroleum Geologists (AAPG)
American Association of Petroleum Geologists (AAPG)
American Association of Petroleum Geologists (AAPG)
Explorer Article

Michael Collier, this year’s Geosciences in the Media Award winner, has a voracious appetite for knowledge and an eye for geologic beauty.

American Association of Petroleum Geologists (AAPG)
Explorer ProTracks

The Pacific Section’s Young Professionals Special Interest Group is working to be more involved and active in the wake of the current industry environment.

American Association of Petroleum Geologists (AAPG)
Explorer Article

AAPG’s Memoir 111 “3-D Structural Interpretation: Earth, Mind, and Machine” will be released this month. The volume is one of the first to compare perspectives of geologic interpretation from industry and academic practitioners, with consideration of how 3-D cognitive skills impact what geologists think and do.

American Association of Petroleum Geologists (AAPG)
Explorer Historical Highlights

When Occidental Petroleum Corporation was reorganized in 1959, its total oil production was some 100 barrels per day. By the time Moammar Gaddaffi nationalized the industry in 1969, Oxy Libya, the wholly owned subsidiary, was producing 800,000 barrels per day. Such an amount made Oxy Libya the eighth largest producer in the world.

American Association of Petroleum Geologists (AAPG)
VG Abstract

Analysis of microseismicity induced by hydraulic fracture stimulation in the Marcellus Shale shows changes in stress state for different zones of failure. During the treatment, shear failure occurs on both the J1 and J2 fracture orientations in response to different maximum stress orientations, indicating localized changes in the orientation during the treatment. Reactivation of a fault near the wellbore is associated with failure mechanisms with a higher volumetric component, indicating possible inflation of faults and fractures by the introduction of the slurry. Quantification of the stress conditions that are associated with inflation could potentially be used to optimize the stimulation by identifying which fractures will preferentially take on slurry volume.

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Request a visit from Sherilyn Williams-Stroud!

American Association of Petroleum Geologists (AAPG)
VG Abstract

Hydraulic fracturing has been around for decades. This talk describes some of the first applications of the technology, how it developed over time, and our current understanding of its impacts with some discussion of both water and earthquake hazards.

Request a visit from Sherilyn Williams-Stroud!

American Association of Petroleum Geologists (AAPG)
VG Abstract

Microseismicity induced by hydraulic fracture stimulation of a horizontal well was mapped with a near-surface buried array. Distinct linear trends of events were not parallel to the direction of fast shear wave polarization measured in the reservoir with a crossed-dipole anisotropy tool. Analysis of core from a nearby well revealed numerous calcite-filled fractures that did not induce shear wave polarization, but did significantly impact the failure behavior of the reservoir rock during the stimulation treatment. Hydraulic fracture simulation with DFN modeling and source mechanism analysis supports the interpretation of reactivated existing fractures rather than the formation of hydraulically-induced tensile fractures.

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Request a visit from Sherilyn Williams-Stroud!

American Association of Petroleum Geologists (AAPG)

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