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Geomechanics and Fracture Analysis

Explorer Article

AAPG’s prestigious Distinguished Lecturer program, which offers audiences a chance to hear the latest in geoscience research, understanding and practical applications, kicks-off its new season with three speaking tours planned for September.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

A $3.5 million proprietary 3-D seismic survey was recorded in central Pennsylvania region to determine the effectiveness of modern 3-D/3C seismic data in extracting certain rock properties of the Marcellus Shale.

American Association of Petroleum Geologists (AAPG)
Explorer Article

A popular part of the AAPG education department's many offerings is the compelling and often exotic field seminar program – and right now AAPG is looking for new leaders and fresh ideas for areas to visit and study.

American Association of Petroleum Geologists (AAPG)
Explorer Geophysical Corner

In areas where fracture-producing stress fields have been oriented at different azimuths over geologic time, there can be fracture sets of varying intensities and different orientations across a stratigraphic interval.

American Association of Petroleum Geologists (AAPG)
Explorer Article

The fast-approaching AAPG International Conference and Exhibition in Milan will showcase – in association with EMD – a comprehensive unconventional resources program with global scope, ranging in scale from the nanopore to the petroleum system, exploring the latest in applied geoscience and engineering.

American Association of Petroleum Geologists (AAPG)
Explorer Geophysical Corner

As has been emphasized in the three preceding articles of this series, when a shear (S) wave propagates through a rock unit that has aligned vertical fractures, it splits into two S waves – a fast-S (S1) mode and a slow-S (S2) mode.

American Association of Petroleum Geologists (AAPG)
Explorer Geophysical Corner

This month we continue our series on S waves and factures by taking a look at another laboratory measurement that illustrates an important behavior of S waves that propagate in fractured media.

American Association of Petroleum Geologists (AAPG)
Explorer Geophysical Corner

This month we expand our insights into the behavior of seismic S waves as they propagate through a fractured interval, with the emphasis placed on laboratory data of real S waves propagating through fractured real-Earth media.

American Association of Petroleum Geologists (AAPG)
Explorer Article

The Middle Devonian Marcellus Shale has become one doozy of a gas play. In fact, it’s one of the premier shale gas plays of North America in terms of total gas resource, extent, production rates and economic potential, according to AAPG member Bill Zagorski, vice president of geology for the Southpointe, Pa., Marcellus shale division at Range Resources, which pioneered the play.

American Association of Petroleum Geologists (AAPG)
Explorer Geophysical Corner

When a shear (S) wave propagates through a rock unit that has vertical fractures oriented at a reasonably consistent azimuth, it splits into two S waves that propagate with distinct velocities.

American Association of Petroleum Geologists (AAPG)
Workshop
Bogota, Colombia
Wednesday, 17 March Thursday, 18 March 2021, 8:00 a.m.–5:00 p.m.

The AAPG Latin America & Caribbean Region and the Colombian Association of Petroleum Geologists and Geophysicists (ACGGP) invite you join us for GTW Colombia 2021, a specialized workshop bringing leading scientists and industry practitioners to share best practices, exchange ideas and explore opportunities for future collaboration. The 2-day workshop brings together technical experts and industry leaders from Colombia and throughout the Americas to take a multidisciplinary look at future opportunities for exploration and development of Southern Caribbean Frontier Basins.

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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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American Association of Petroleum Geologists (AAPG)

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