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  • 1
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    SPE/SEG workshop: Injection-induced seismicity -- Engineering integration, evaluation, and mitigation (2016)
    Society of Exploration Geophysicists (SEG)
    Details
    Publication Date: 2016-06-23
    Description: An insightful technical workshop took place 28–30 March 2016 in Fort Worth, Texas, to discuss topics related to injection-induced seismicity. The workshop followed two previous events (September 2012 in Broomfield, Colorado, USA, and September 2014 in Banff, Alberta, Canada), which were held in cooperation between SEG and the Society of Petroleum Engineers (SPE). The workshop series has mirrored the evolving technical understanding of this important issue, as injection-induced seismicity has continued to develop over the last several years. While the previous two workshops focused primarily on seismology, the recent Fort Worth workshop purposely focused on engineering considerations. Similar to the previous two workshops, the Fort Worth workshop sold out, and a waiting list was established to handle the overflow.
    Print ISSN: 1070-485X
    Electronic ISSN: 1938-3789
    Topics: Geosciences
    Published by Society of Exploration Geophysicists (SEG)
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  • 2
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    Geomechanical modeling of induced seismicity resulting from hydraulic fracturing (2015)
    Society of Exploration Geophysicists (SEG)
    Details
    Publication Date: 2015-06-03
    Description: The number of instances of induced seismicity associated with hydraulic fracturing has increased over the last few years, resulting in the development of industry protocols to mitigate seismic hazard. The main focus of these protocols is "traffic-light" systems based on seismic monitoring, in which operations are modified if a specified "yellow-light" magnitude level is reached or ultimately are stopped at a "red-light" magnitude. A variety of operational changes is possible to mitigate the seismic hazard at the different traffic-light levels, including slowing injection rate or volume, skipping stages, or ultimately stopping or flowing back the well. Empirical evidence of induced-seismicity magnitudes, including microseismic-imaging projects in which no induced seismicity occurred, are inconclusive about the impact of changing volume or rate. Although the largest observed magnitudes occur at large injection volumes, significant variability in magnitudes is found for both injection rate and volume. Alternatively, a geomechanical simulation can examine pore-pressure diffusion and mechanical stresses and strains associated with hydraulic-fracture treatments and can be used to model fault activation and corresponding estimates of seismic magnitudes. These geomechanical models complement monitoring-based traffic-light systems and can be used to test various operational changes to identify a scenario that reduces seismic hazard.
    Print ISSN: 1070-485X
    Electronic ISSN: 1938-3789
    Topics: Geosciences
    Published by Society of Exploration Geophysicists (SEG)
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  • 3
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    URTeC 2017 to focus on cross-disciplinary collaboration (2017)
    Society of Exploration Geophysicists (SEG)
    Details
    Publication Date: 2017-06-02
    Description: Preparations are well under way for the 2017 Unconventional Resources Technology Conference (URTeC), which will take place 24–26 July in Austin, Texas. URTeC is focused on the latest science and technology applied to exploration, appraisal, analysis, and development of unconventional resources. As with previous URTeC meetings, a strong technical program has been compiled and is complemented by a plenary session, core exhibits, networking receptions, eight short courses, nine topical breakfasts and luncheons, and a technical exhibition.
    Print ISSN: 1070-485X
    Electronic ISSN: 1938-3789
    Topics: Geosciences
    Published by Society of Exploration Geophysicists (SEG)
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  • 4
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    Strong technical program drives successful URTeC (2017)
    Society of Exploration Geophysicists (SEG)
    Details
    Publication Date: 2017-09-30
    Description: The 2017 edition of the Unconventional Resources Technology Conference (URTeC) took place 24–26 July in Austin, Texas. URTeC is an event focused on the latest science and technology applied to the exploration, appraisal, analysis, and development of unconventional resources. URTeC, cosponsored by SEG, the American Association of Petroleum Geologists, and the Society of Petroleum Engineers, provides a showcase for integrated geoscience and engineering technology for unconventional resources.
    Print ISSN: 1070-485X
    Electronic ISSN: 1938-3789
    Topics: Geosciences
    Published by Society of Exploration Geophysicists (SEG)
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  • 5
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    2013 SEG Forum on Microseismic Technology (2013)
    Society of Exploration Geophysicists (SEG)
    Details
    Publication Date: 2013-11-08
    Description: A forum on microseismic technology took place on 22–24 January 2013 in Napa, California. It was the second of its kind; the first was held in April 2008 at Ucross, Wyoming, whose purpose was to bring together industry experts and capture the state of the art at the time. This year, the focus was on identifying and understanding the differences between data recorded at or near the earth's surface and data recorded in deep boreholes. To give the field the greatest possible impetus, attendants were selected based on their contribution potential with respect to the scope of the forum. From 160 applicants, a total of 74 attendees was selected, out of which 27 presented orally and eight presented posters. The forum's scope was addressed over two busy days with sessions on case studies, feasibility studies, processing, uncertainties, and the road ahead. Two lunchtime presentations addressed subjects of wide interest not covered in these sessions. No proceedings were planned in order to encourage the sharing of otherwise confidential information.
    Print ISSN: 1070-485X
    Electronic ISSN: 1938-3789
    Topics: Geosciences
    Published by Society of Exploration Geophysicists (SEG)
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  • 6
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    Tracking microseismic signals from the reservoir to surface (2012)
    Society of Exploration Geophysicists (SEG)
    Details
    Publication Date: 2012-11-16
    Description: Since the launch of commercial microseismic mapping of hydraulic fracturing in the Barnett Shale in 2000, microseismic has become the de facto geophysical technique to characterize stimulated fracture networks in unconventional reservoirs. Effective stimulation of these resources through hydraulic stimulations along multiple intervals of horizontal wells is critical to economic production from tight and shale oil and gas resources. The inherent low permeability of these formations necessitates creation of permeable flow paths between the reservoir and wellbore through injection of high-pressure fluids. Microseismic observations over the last decade have led to a paradigm shift in our concept and engineering models of hydraulic fractures from simple, planar fractures to complex fracture networks controlled by the stress state and the existence of pre-existing fractures. Injected fluids in rock tend to follow the "path of least resistance" that minimizes the work done, preferentially growing into pre-existing fractures and lower stress intervals. Microseismic is the only technology that can image these fracture networks and has led to the incredible expansion of microseismic monitoring. Over the past decade, a vast microseismic database has been collected covering all North American shale oil and gas fields, in addition to key international fields. The microseismic results have demonstrated the significant variability in hydraulic fracturing responses on all scales: across a field, along the horizontal length of a well, and even between perforations of a single frac stage.
    Print ISSN: 1070-485X
    Electronic ISSN: 1938-3789
    Topics: Geosciences
    Published by Society of Exploration Geophysicists (SEG)
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  • 7
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    Microseismic geomechanics of hydraulic-fracture networks: Insights into mechanisms of microseismic sources (2015)
    Society of Exploration Geophysicists (SEG)
    Details
    Publication Date: 2015-08-01
    Description: Microseismic interpretation of hydraulic fracturing requires an understanding of the mechanism of the microseismic sources. Quantitative geomechanical models can predict microseismicity for quantitative comparison with field data and can be used to reconcile 3D seismic earth models, fracture engineering, and fracture monitoring. Because microseismicity represents only one component of the geomechanical response to hydraulic fracturing, a microseismic geomechanics framework can provide insights into the connection with the fracture network. During hydraulic fracturing, microseismicity can be induced by both fluid pressure and stress mechanisms, resulting in wet events directly associated with the fracture network and remote dry events. Accurate interpretation of the hydraulic-fracture characteristics requires distinguishing identification of dry microseismicity not in hydraulic connection with the stimulated fracture network. Predictive microseismic geomechanical models also can be used to infer the primary, conductive hydraulic-fracture networks and to run scenario testing to improve engineering design.
    Print ISSN: 1070-485X
    Electronic ISSN: 1938-3789
    Topics: Geosciences
    Published by Society of Exploration Geophysicists (SEG)
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  • 8
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    Role of geophysics in unconventional-resource development on display at URTeC 2016 (2016)
    Society of Exploration Geophysicists (SEG)
    Details
    Publication Date: 2016-10-08
    Description: The 2016 Unconventional Resources Technology Conference (URTeC), which took place 1–3 August in San Antonio, Texas, provided a unique opportunity to explore the latest development strategies in unconventional reservoirs, with the role of geophysics on prominent display. The fourth-annual event was cosponsored by SEG, the Society of Petroleum Engineers (SPE), and the American Association of Petroleum Geologists (AAPG), and was supported by eight additional societies. The meeting series has established itself as the premier event showcasing state-of-the-art unconventional-reservoir development and characterization with a specific emphasis on integrated workflows.
    Print ISSN: 1070-485X
    Electronic ISSN: 1938-3789
    Topics: Geosciences
    Published by Society of Exploration Geophysicists (SEG)
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  • 9
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    SEG/SPE/ARMA Injection-induced Seismicity Workshop (2015)
    Society of Exploration Geophysicists (SEG)
    Details
    Publication Date: 2015-01-01
    Description: In September 2014, a fascinating technical workshop was held in the picturesque setting of Banff, Alberta, Canada, on injection-induced seismicity. The workshop brought together industry and technical experts to discuss the increasingly important topic of induced seismicity associated with various injections during oil and gas activities. The event was cosponsored by SEG, SPE, and the American Rock Mechanics Association as a follow-up to a meeting on the same topic in Broomfield, Colorado, in September 2012.
    Print ISSN: 1070-485X
    Electronic ISSN: 1938-3789
    Topics: Geosciences
    Published by Society of Exploration Geophysicists (SEG)
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