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Explorer Geophysical Corner

Exploration of the Brookian-age Nanushuk and Torok formations on the North Slope of Alaska is a hot topic these days. The Nanushuk and Torok formations are Cretaceous progradational clastic deposits in the Colville basin of Alaska. These formations offer new opportunities to the oil and gas community because of their shallow depth, vast spatial extent, publicly available data, scope of development and other appealing features.

American Association of Petroleum Geologists (AAPG)
Explorer Historical Highlights

The German oil industry did not employ geologists until the 1920s. Instead, they relied on geological surveys and other resources from universities, predominantly from Jakob Stoller of the Prussian Geological Survey. After World War I, with the beginning of private motorization and the interest of the military, demand for oil began to increase. This led to the establishment of a separate department of petroleum geology and the employment of a young geologist, Alfred Bentz, as assistant to Stoller.

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American Association of Petroleum Geologists (AAPG)
Explorer Article

Josh Rosenfeld highlighted some perspectives on the Paleogene drawdown hypothesis in the Gulf of Mexico in the April 2020 issue of the EXPLORER, a result of suspected isolation from the world ocean during the Cuban arc-Bahamas collision with implications for Wilcox reservoir deposition. In contrast, John Snedden and authors’ portrayed the Wilcox as a period of normal marine deposition, requiring no such drawdown, in the May 2020 issue. Still another concept was presented by Roger Higgs at the South African 2009 AAPG International Conference and Exhibition, that marine isolation occurred but that fluvial input exceeded evaporation such that the Gulf became brackish, hence the poor development of Wilcox fauna.

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American Association of Petroleum Geologists (AAPG)
Explorer Article

Super basins around the world offer plentiful opportunities for exploration and development, even with the temporarily reduced financial outlook of the oil industry. Ask explorationists to pick a favorite in today’s environment and the popular choice is almost a cheat. The Gulf of Mexico isn’t just a super basin. It’s a huge expanse of prospects and possibilities, of proven resources and potential reserves. An onshore, near-shore, offshore and deepwater exploration province that is really a vast collection of basins and geological features.

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American Association of Petroleum Geologists (AAPG)
Explorer Article

Helium rose back into the news recently, in part because of drilling exploration programs planned for an area along the Alberta-Saskatchewan border in southern Canada. North American Helium Inc. of Calgary announced it had arranged additional equity financing of about $29 million to purchase and construct its second helium purification plant at the Battle Creek field in southwest Saskatchewan and to fund an active drilling program. A number of other companies are reportedly involved in North American helium exploration projects, including Desert Mountain Energy Corp. and Royal Helium Ltd. of Vancouver, Weil Group Resources LLC in Richmond, Va., and Australian explorer Blue Star Energy.

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American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Preparing for hurricanes, creating scripts with Python and responding to pandemics are just a few of the job functions of Johann Sidial, 31-year-old geologist and AAPG Member who works with the government of Sint Maarten’s Ministry of Public Housing, Spatial Planning, Environment and Infrastructure. In his role as geographic information systems officer, Sidial is responsible for managing and executing the acquisition, analysis and visualization of datasets across Sint Maarten, a constituent country for the Kingdom of the Netherlands located in the Dutch Caribbean.

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American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Can predictive data analytics, a cutting-edge tool for exploration, lead to a future boom in new field discoveries and reserve additions? If it does, predictive analytics predicted it.

American Association of Petroleum Geologists (AAPG)
Learn! Blog

Using the most advanced technologies combined with a passion for geology leads to an ever-increasing level of understanding of rock properties and reservoirs. Welcome to an interview with Kitty Milliken, who shares her experiences and insights.

American Association of Petroleum Geologists (AAPG)
Explorer Division Column DEG

The DEG leadership unanimously endorsed EnergySource Minerals in San Diego to receive a DEG Corporate Award for their efforts to harness for lithium extraction the brine flow supplying the John L. Featherstone geothermal power plant in the Salton Sea region. EnergySource Chief Operating Officer Derek Benson shared with us that a proprietary process called “Integrated Lithium Adsorption Desorption,” or “ILiAD,” was demonstrated to be the key that unlocks Salton Sea lithium development. They have succeeded in producing battery-grade lithium carbonate and lithium hydroxide utilizing the brine flow as it exits the power generation.

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American Association of Petroleum Geologists (AAPG)
Explorer Director’s Corner

Many of us as petroleum geoscientists, whether recent graduates or experienced professionals, are confronting significant disruption in our chosen profession. The oil and gas business today is, once again, in transition. How do we each individually adapt this to this new reality? It’s by exploring breadth – range – not just the depths of specialization.

American Association of Petroleum Geologists (AAPG)
DL Abstract

Three-dimensional (3D) seismic-reflection surveys provide one of the most important data types for understanding subsurface depositional systems. Quantitative analysis is commonly restricted to geophysical interpretation of elastic properties of rocks in the subsurface. Wide availability of 3D seismic-reflection data and integration provide opportunities for quantitative analysis of subsurface stratigraphic sequences. Here, we integrate traditional seismic-stratigraphic interpretation with quantitative geomorphologic analysis and numerical modeling to explore new insights into submarine-channel evolution.

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Request a visit from Jacob Covault!

American Association of Petroleum Geologists (AAPG)
DL Abstract

Why H₂ is generated in subsurface? Which are the reactions and the promising geological setting? Example in countries where H₂ have already been found: Australia, Brazil. Kinetic reactions: i.e., Is the natural H₂ renewable? What we don't know yet about this resource and about the H₂ systems (generation/transport/accumulation). Overview of the current landscape (subsurface law, permitting, E&P activity)

Request a visit from Isabelle Moretti!

American Association of Petroleum Geologists (AAPG)
DL Abstract

While there are many habitats that are associated with the deposition of organic-rich marine and lacustrine source rocks, one important pathway is linked to the onset of increased basin subsidence associated with major tectonic events. A key aspect is that this subsidence is spatially variable, with the uplift of basin flanks contemporaneous with the foundering of the basin center, resulting in a steeper basin profile.

Request a visit from Kurt W. Rudolph!

American Association of Petroleum Geologists (AAPG)
DL Abstract

Physics is an essential component of geophysics but there is much that physics cannot know or address. 

Request a visit from John Castagna!

American Association of Petroleum Geologists (AAPG)
DL Abstract

This presentation is a survey of subsurface machine learning concepts that have been formulated for unconventional asset development, described in the literature, and subsequently patented. Operators that utilize similar subsurface machine learning workflows and other data modelling techniques enjoy a competitive advantage at optimizing the development of unconventional plays.

Request a visit from Shane Prochnow!

American Association of Petroleum Geologists (AAPG)
VG Abstract

In comparison with the known boundary conditions that promote salt deformation and flow in sedimentary basins, the processes involved with the mobilization of clay-rich detrital sediments are far less well established. This talk will use seismic examples in different tectonic settings to document the variety of shale geometries that can be formed under brittle and ductile deformations.

Request a visit from Juan I. Soto!

American Association of Petroleum Geologists (AAPG)
VG Abstract

The carbonate sequences that were deposited in the now exhumed Tethyan Ocean influence many aspects of our lives today, either by supplying the energy that warms our homes and the fuel that powers our cars or providing the stunning landscapes for both winter and summer vacations. They also represent some of the most intensely studied rock formations in the world and have provided geoscientists with a fascinating insight into the turbulent nature of 250 Million years of Earth’s history. By combining studies from the full range of geoscience disciplines this presentation will trace the development of these carbonate sequences from their initial formation on the margins of large ancient continental masses to their present day locations in and around the Greater Mediterranean and Near East region. The first order control on growth patterns and carbonate platform development by the regional plate-tectonic setting, underlying basin architecture and fluctuations in sea level will be illustrated. The organisms that contribute to sequence development will be revealed to be treasure troves of forensic information. Finally, these rock sequences will be shown to contain all the ingredients necessary to form and retain hydrocarbons and the manner in which major post-depositional tectonic events led to the formation of some of the largest hydrocarbon accumulations in the world will be demonstrated.

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Request a visit from Keith Gerdes!

American Association of Petroleum Geologists (AAPG)
VG Abstract

The Betic hinterland, in the westernmost Mediterranean, constitutes a unique example of a stack of metamorphic units. Using a three-dimensional model for the crustal structure of the Betics-Rif area this talk will address the role of crustal flow simultaneously to upper-crustal low-angle faulting in the origin and evolution of the topography.

Request a visit from Juan I. Soto!

American Association of Petroleum Geologists (AAPG)
DL Abstract

Paleozoic North America has experienced multiple mountain building events, from Ordovician to Permian, on all margins of the continent. These have had a profound effect on the resulting complex basins and their associated petroleum systems. Subsequent uplift, erosion and overprinting of these ancient systems impedes the direct observation of their tectonic history. However, the basin sedimentary records are more complete, and provide additional insights into the timing and style of the mountain building events. In this study, we employ ~90 1D basin models, ~30 inverse flexural models, isopachs, and paleogeographic maps to better understand the Paleozoic history of North America.

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Request a visit from Kurt W. Rudolph!

American Association of Petroleum Geologists (AAPG)
DL Abstract

Local sea-level changes are not simply a function of global ocean volumes but also the interactions between the solid Earth, the Earth’s gravitational field and the loading and unloading of ice sheets. Contrasting behaviors between Antarctica and Scotland highlight how important the geologic structure beneath the former ice sheets is in determining the interactions between ice sheets and relative sea levels.

Request a visit from Alex Simms!

American Association of Petroleum Geologists (AAPG)

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