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70th GCAGS/GCSSEPM Convention and Exposition - Call for Papers
Expires in 46 days
2020 AAPG Southwest Section Annual Meeting - Call for Papers
Expires in 106 days
Online registration is open for this year’s AAPG Annual Convention and Exhibition, which will be held April 6-9 at the George R. Brown Convention Center in Houston – and reduced registration fees are still available for those who act fast.
Organic-carbon–rich shales of the lower Marcellus Formation were deposited at the toe and basinward of a prograding clinothem associated with a Mahantango Formation delta complex centered near Harrisburg, Pennsylvania. Distribution of these organic-carbon–rich shales was influenced by shifts in the delta complex driven by changes in rates of accommodation creation and by a topographically high carbonate bank that formed along the Findlay-Algonquin arch during deposition of the Onondaga Formation. Specifically, we interpret the Union Springs member (Shamokin Member of the Marcellus Formation) and the Onondaga Formation as comprising a single third-order depositional sequence. The Onondaga Formation was deposited in the lowstand to transgressive systems tract, and the Union Springs member was deposited in the transgressive, highstand, and falling-stage systems tract. The regional extent of parasequences, systems tracts, and the interpreted depositional sequence suggest that base-level fluctuations were primarily caused by allogenic forcing—eustasy, climate, or regional thermal uplift or subsidence—instead of basement fault reactivation as argued by previous workers. Paleowater depths in the region of Marcellus Formation black mudrock accumulation were at least 330 ft (100 m) as estimated by differences in strata thickness between the northwestern carbonate bank and basinal facies to the southeast. Geochemical analysis indicates anoxic to euxinic bottom-water conditions. These conditions were supported by a deep, stratified basin with a lack of circulation.
Energy is required to secure, treat and distribute water; conversely, energy production depends on an abundant and reliable source of water.
The origin of thermogenic natural gas in the shallow stratigraphy of northeastern Pennsylvania is associated, in part, with interbedded coal identified in numerous outcrops of the Upper Devonian Catskill and Lock Haven Formations. Historically documented and newly identified locations of Upper Devonian coal stringers are shown to be widespread, both laterally across the region and vertically throughout the stratigraphic section of the Catskill and Lock Haven Formations. Coal samples exhibited considerable gas source potential with total organic carbon as high as 44.40% by weight, with a mean of 13.66% for 23 sample locations analyzed. Upper Devonian coal is thermogenically mature; calculated vitrinite reflectances range from 1.25% to 2.89%, with most samples falling within the dry-gas window. Source potential is further supported by gas shows observed while drilling through shallow, identifiable coal horizons, which are at times located within fresh groundwater aquifers. Thermogenic gas detected in area water wells during predrill baseline sampling is determined not only to be naturally occurring, but also common in the region.
The recent National Academies’ Institute of Medicine (IOM) report on its late-April 2012 workshop, “Health Impact Assessment of Shale Gas Extraction,” describes many potential health impacts of shale gas development and identifies the data gaps.
The Marcellus Shale is considered to be the largest unconventional shale-gas resource in the United States. Two critical factors for unconventional shale reservoirs are the response of a unit to hydraulic fracture stimulation and gas content. The fracture attributes reflect the geomechanical properties of the rocks, which are partly related to rock mineralogy. The natural gas content of a shale reservoir rock is strongly linked to organic matter content, measured by total organic carbon (TOC). A mudstone lithofacies is a vertically and laterally continuous zone with similar mineral composition, rock geomechanical properties, and TOC content. Core, log, and seismic data were used to build a three-dimensional (3-D) mudrock lithofacies model from core to wells and, finally, to regional scale. An artificial neural network was used for lithofacies prediction. Eight petrophysical parameters derived from conventional logs were determined as critical inputs. Advanced logs, such as pulsed neutron spectroscopy, with log-determined mineral composition and TOC data were used to improve and confirm the quantitative relationship between conventional logs and lithofacies. Sequential indicator simulation performed well for 3-D modeling of Marcellus Shale lithofacies. The interplay of dilution by terrigenous detritus, organic matter productivity, and organic matter preservation and decomposition affected the distribution of Marcellus Shale lithofacies distribution, which may be attributed to water depth and the distance to shoreline. The trend of normalized average gas production rate from horizontal wells supported our approach to modeling Marcellus Shale lithofacies. The proposed 3-D modeling approach may be helpful for optimizing the design of horizontal well trajectories and hydraulic fracture stimulation strategies.
The Distinguished Lecture program, funded in part by the AAPG Foundation, is the Association’s flagship initiative for spreading the latest in science, technology and professional information.
Making a connection: A team of AAPG members spend time with Boy Scouts at this year’s Jamboree, introducing scores of them to the world of geology.
Award-winning paper showcases cutting-edge technique that strongly correlates the 2011 Youngstown, Ohio, Earthquake Sequence to wastewater injection.
Geoscience students from the University of Utah took the top prize in this year’s AAPG/AAPG Foundation Imperial Barrel Award competition, beating out 10 other teams from geoscience departments from around the world.
This field trip includes an overview of Enterprise Products Partners Houston Regional Operations at Mont Belvieu, Texas. Home of the world's largest salt dome.
This all-day field trip to NASA Space Center Houston is a unique opportunity to see firsthand the history of U.S. Space exploration with Apollo 17 Astronaut Harrison Schmitt and Shuttle Astronaut Jim Reilly. Be prepared for a full day of exciting and interesting space adventures, including a morning tour of a full-scale model of the Space Shuttle atop a Boeing 747.
An excursion from the U.S. Corps. of Engineers office at Barker Reservoir to visit locations where where the manifestation of surface faults demonstrates the damage they can cause.
A five day field trip held in conjunction with AAPG ACE 2020 in Houston, Texas, with visits to outcrops in Austin, Eagle Ford, Wolfcamp, and/or Bone Springs
Deltas are extremely important depositional systems and often source and contain prolific hydrocarbon accumulations. This workshop includes topical lectures, key cores, and a suite of exercises that integrate core, well logs, experimental flume data, and seismic sections to develop identification and subsurface mapping skills of hydrocarbon accumulations within deltaic settings.
This two-day workshop provides a review of the application of carbonate facies, diagenesis, and seismic sequence stratigraphy to exploration and production. The workshop combines seismic, well log and rock data, to develop interpretations that help predict carbonate hydrocarbon systems, and characterize conventional and unconventional carbonate reservoirs and seals.
This course provides an overview of different 3-D printing techniques that use both rock-like materials (e.g., sand, gypsum, clay) and polymers (e.g., plastics, resins). Participants will learn how to deploy 3-D-printed models to improve technical communication to diverse audiences (e.g., students, geoscientists, engineers, managers, community stakeholders).
The purpose of the course is to help people who are immersed in the oil and gas industry to gain a practical understanding of what unstructured data is, what value there is in it, how it can be utilized, and why this is now relevant.
A two-day course studying advanced methods in seismic stratigraphy including application of sequence stratigraphy to unconventional resources.
This course is designed to teach graduate students the principles, concepts and methods of sequence stratigraphy.
This is a one-day short course on the various applications of petroleum and inorganic geochemistry throughout the lifecycle of unconventional reservoir from exploration, appraisal, to development.
Any complete core analysis program should include companion thin sections for all core plugs on which measurements have been made. This course will describe the use of multimodal thin section imaging and image analysis to make quantitative estimates of rock properties that are important in hydrocarbon exploration and production.
Entry cost and CO2 supply have long been barriers to traditional Enhanced Oil Recovery (EOR) applications, but new tax regulations may break the stalemate, providing both for feasible EOR capture from a larger range of anthropogenic sources, and potential CCS options. The course will provide participants with an overview of CO2 in the framework of the energy transition. Speakers will address the regulatory and policy issues as well as societal concerns.
This course is designed for geologists who interpret fine-grained rocks, explore for or develop conventional hydrocarbons, shale gas, or oil shale. Participants will practice recognizing and correlating significant stratigraphic packages through seismic stratigraphy, stacking pattern analysis of well-log, core and outcrop data, and facies analysis.
A short course discussing the Fast Wheeler Transform (FWT) and the role that synkinematic deposition plays in the masking of onlaps, offlaps, etc., and how FWT’s solve this interpretation challenge
This course is designed for anyone who leads or coordinates field activities such as Field Trips, Field Seminars, Field Camps, or general field work, for companies or student groups. Participants will acquire and practice strategies to prepare for and conduct safe and effective field activities. (Although not required, previous participants have suggested that having NOLS - Wilderness First Aid or equivalent training will enhance the course experience.)
Ever wondered “Why didn’t I say something?” after witnessing social bias—a stereotype, a prejudice or discrimination—that happened in your everyday life? You’re not alone. Deciding whether and how to respond to bias is complicated. Understanding what motivates us to speak up, the challenges we face when doing so, and strategies for effective responding can help bystanders to bias better evaluate their options and select effective strategies. This interactive presentation will invite attendees to learn about bystander reactions to social biases and how these reactions can help or hinder decisions to speak up.
This lecture will discuss the differences between carbonates and siliciclastics from their chemical composition through their distributions in time and space. Building on these fundamental differences, we will explore the challenges carbonates pose to petroleum geologists in terms of seismic interpretation, reservoir quality prediction, field development, etc. Peppered with humorous personal stories, still raging academic debates, and the heartfelt frustrations of real industry professionals, the aim is to inspire students and young professionals to rise to the occasion and embrace the reservoir rocks that petroleum geologists love to hate.
Request a visit from Noelle Joy Purcell!
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