Seismic attribute illumination of Woodford Shale faults and fractures, Arkoma Basin, OK

Guo, Yanxia; Kui, Zhang; Marfurt, Kurt J.

doi:10.1190/1.3513097

Cited by 18 publications

(16 citation statements)

References 7 publications

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“…Unlike the previous studies (Mai et al, 2009;Guo et al, 2010;Thompson et al, 2010), there is no distinct clustering of microseismic events in ridges/domes or bowls/valleys. This lack of strong correlation may still reflect microseismic event location uncertainty as compared to the cells within which k 1 and k 2 were calculated, although we attempted to restrict distance to minimize the effect of location uncertainty.…”

Section: Microseismic Events and Volumetric Curvaturecontrasting

confidence: 77%

“…Past studies have found a correlation between microseismic event locations and volumetric curvature attributes, suggesting a tie between subsurface structures and preferred fracture paths (e.g., Mai et al, 2009;Guo et al, 2010;Thompson et al, 2010). In these studies, microseismic events dominantly cluster either within ridges/domes (Mai et al, 2009;Guo et al, 2010) or valleys/bowls (Thompson et al, 2010), but show a distinct preference in either case.…”

Section: Microseismic Events and Volumetric Curvaturementioning

confidence: 94%

“…In these studies, microseismic events dominantly cluster either within ridges/domes (Mai et al, 2009;Guo et al, 2010) or valleys/bowls (Thompson et al, 2010), but show a distinct preference in either case. In our study, we calculated long-and short-wavelength curvature, and characterized the structures within our seismic volume at microseismic event locations (Figures 2 and 10).…”

Section: Microseismic Events and Volumetric Curvaturementioning

confidence: 97%

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Integration of hydraulically induced microseismic event locations with active seismic attributes: A North Texas Barnett Shale case study

et al. 2012

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Hydraulic fractures are delineated by induced microseismic event distributions and typically propagate perpendicular to the regional minimum stress direction. However, at a smaller scale, varying mineralogical composition and existing fault and fracture networks can influence developing fracture networks. We integrated microseismic event locations with seismic attributes from multichannel seismic reflection data, including inversion results for impedance and Lamé parameters, and seismic curvature attributes. We found that microseismic event locations consistently correlate to zones of low seismic impedance and low λρ and μρ values, describing characteristic material properties of fracture-prone zones within the North Texas Lower and Upper Barnett Shale. Additionally, event locations showed a weak correlation with anticlinal structures as defined by volumetric curvature attributes. We suggest that the low impedance, low λρ and μρ zones were related to the boundary between calcite-filled fractures and the host rock.

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Section: Microseismic Events and Volumetric Curvaturecontrasting

confidence: 77%

Section: Microseismic Events and Volumetric Curvaturementioning

confidence: 94%

Section: Microseismic Events and Volumetric Curvaturementioning

confidence: 97%

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Integration of hydraulically induced microseismic event locations with active seismic attributes: A North Texas Barnett Shale case study

et al. 2012

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“…Each volume is then correlated to production to validate or reject the hypothesis. Daber and Boe (2010) describe the use of what they refer to as azimuthal curvature (described here as Euler curvature following Roberts' definition) for reducing noise in a poststack curvature volume. Daber and Boe (2010) show that if the azimuthal direction is parallel to the inline direction, then the curvature computation is relatively insensitive to the crossline acquisition noise.…”

Section: Applicationsmentioning

confidence: 99%

“…They then compute rms maps of each azimuthally limited volume that can be correlated to production. Guo et al (2010) hypothesize that each azimuthally limited attribute volume computed from k 1 and 1 corresponds to open fractures. Each volume is then correlated to production to validate or reject the hypothesis.…”

Section: Applicationsmentioning

confidence: 99%

Observing fracture lineaments with Euler curvature

Chopra¹,

Marfurt

2014

The Leading Edge

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In the last several years, seismic-curvature attributes have been shown to be very useful in delineation of folds, flexures, and faults. Although many curvature measures have been introduced, the most-positive and most-negative principal curvatures (k 1 and k 2 ) are found to be the most useful. All other curvature measures can be derived from the two principal curvatures. For example, the components of apparent curvature projected parallel to the dip azimuth and strike of a dipping plane are useful in given tectonic and stress settings. Euler curvature is a generalization of the dip and strike components of curvature in any user-defined direction, as applied to the interpretation of surface-seismic data. This attribute is useful for interpretation of lineament features in desired azimuthal directions, for example, perpendicular to the minimum horizontal stress. If a given azimuth is known or hypothesized to be correlated with open fractures or if a given azimuth can be correlated with enhanced production or effective horizontal drilling, a Euler-curvature intensity volume can be generated for that azimuth, thereby highgrading potential sweet spots.Corresponding author: SChopra@arcis.com Figure 4. Stratal displays from Euler-curvature attribute volumes (long-wavelength) run at different strikes, as indicated. For each strike, the lineaments appear more well defined than those in other directions, and lineament detail on those individual displays is more pronounced than on the coherence display.

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Seismicity Induced by Hydraulic Fracturing in Shales: A Bedding Plane Slip Model

Staněk

Eisner

2017

JGR Solid Earth

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Passive seismic monitoring of microseismic events induced in oil or gas reservoirs is known as microseismic monitoring. Microseismic monitoring is used to understand the process of hydraulic fracturing, which is a reservoir stimulation technique. We use a new geomechanical model with bedding plane slippage induced by hydraulic fractures within shale reservoirs to explain seismicity observed in a typical case study of hydraulic fracturing of a shale gas play in North America. Microseismic events propagating from the injection point are located at similar depths (within the uncertainty of their locations), and their source mechanisms are dominated by shear failure with both dip‐slip and strike‐slip senses of motion. The prevailing dip‐slip mechanisms have one nearly vertical nodal plane perpendicular to the minimum horizontal stress axis, while the other nodal plane is nearly horizontal. Such dip‐slip mechanisms can be explained by slippage along bedding planes activated by the aseismic opening of vertical hydraulic fractures. The model explains the observed prevailing orientation of the shear planes of the microseismic events, as well as the large difference between seismic and hydraulic energy.

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Seismic attribute illumination of Woodford Shale faults and fractures, Arkoma Basin, OK

Cited by 18 publications

References 7 publications

Integration of hydraulically induced microseismic event locations with active seismic attributes: A North Texas Barnett Shale case study

Integration of hydraulically induced microseismic event locations with active seismic attributes: A North Texas Barnett Shale case study

Observing fracture lineaments with Euler curvature

Seismicity Induced by Hydraulic Fracturing in Shales: A Bedding Plane Slip Model

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