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U.S. Oil and Gas Sector is Stagnating as Production Slows - 30 March, 2023 07:30 AM

How Newsom Fell Short of the Oil Penalty He Wanted But Still Scored a Political Win - 30 March, 2023 07:30 AM

Judge Orders U.S. to Resume Oil, Gas Leasing in North Dakota - 30 March, 2023 07:30 AM

UK Scientists Urge Rishi Sunak to Halt New Oil and Gas Developments - 30 March, 2023 07:30 AM

Oil Extends Gains as Iraq Dispute Curbs Exports, Bank Fears Wane - 29 March, 2023 07:30 AM

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06 Apr

Low Resistivity Reservoirs: Path to Explore, Discover and Develop Call for Abstracts Expires in 7 days

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Stratigraphy / Sedimentology Technical Interest Group (TIG)

Explorer Article By Doug Cook

Mars Resources for Human Settlement

On July 30, NASA’s Jet Propulsion Laboratory launched the Mars 2020 Perseverance rover. Perseverance is destined to land at Jezero crater on Feb. 18, 2021, with the most sophisticated kit of geology tools ever assembled for an astrogeology mission. AAPG, as an institution dedicated to exploring for resource commodities, looks to our future in space through the Astrogeology Committee and the Energy Minerals Division. We emphasize the use of geosciences in the development of off-world exploration energy and other natural resources for development in the foreseeable future. Water resources in space, on the moon and on Mars, will become the energy commodity analog of oil on Earth.

Added on 01 October, 2020

Explorer Historical Highlights By Paul J. Markwick

Paleogeography in Exploration

There is something about colored pencils that we, as geologists, find impossible to resist. From geological maps to field sketches to interpreting seismic on those never-ending rolls of paper taped to the longest corridor wall we can find – what more could any geologist want? Our need for powerful software, paper and colored pencils reflects a fundamental problem in geology and especially exploration: how to manage, analyze and visualize the diversity and wealth of information required to solve exploration problems? Early geologists were faced with the same challenge 200 years ago. It was one of the first petroleum geologists, Thomas Sterry Hunt, who saw the value of paleogeography in exploration, and who, in 1873, first coined the term “paleogeography.”

Added on 01 August, 2020

Explorer Article By Xavier Moonan

Record-Breaking Gas Discoveries in the Ortoire Syncline

Touchstone Exploration is the operator of the 184-square kilometer Ortoire Block onshore south eastern Trinidad. The block spans from the villages of Tableland in the west to Pierreville Mayaro in the east and to the very remote areas within the Guayaguayare forest to the south. Structurally, the block covers the greater part of the open east facing Ortoire Syncline which entails Late Miocene Lower Cruse to Pleistocene Mayaro Formation deltaic fill. These passive fordeep infill deposits sit conformably onto a southeastern-verging Early to Middle Miocene fold belt. As such throughout the breadth of the Ortoire Block there are numerous tear fault dissected west-southwest to east-northeast trending anticlines.

Added on 01 August, 2020

Explorer Geophysical Corner By Shuvajit Bhattacharya,Sumit Verma

A Tale of Two Conventional Reservoirs

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.

Added on 01 July, 2020

Explorer Article By James Pindell,Stephen Cossey

It Is Still Viable!

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.

Added on 01 July, 2020

Explorer Article By Ian Norton,John Snedden,Marcie Phillips,Paul Weimer,Robert Cunningham,William Galloway

The Paleogene (Wilcox) Deepwater Play

Joshua Rosenfeld’s article in the April EXPLORER issue’s Historical Highlights provides an interesting compilation of observations selected to support an unproven hypothesis: that the large influx of Paleogene Wilcox sandstones in the Gulf of Mexico can be linked to a major evaporative drawdown of the basin, loosely aligned with and possibly triggering the Paleocene-Eocene thermal event. We offer our observations based on decades of oil industry experience working the Wilcox play, more than 55 peer- reviewed academic papers and one book on Gulf of Mexico sedimentary basin.

Added on 01 May, 2020

Explorer Historical Highlights By Joshua Rosenfeld

Paleogene Drawdown of the Gulf of Mexico?

It all started in 2002, when Unocal revealed that its Trident-1 well had found 400 meters of 70-percent net Lower Wilcox Formation sand in the deepwater Gulf of Mexico, about 400 kilometers beyond the contemporaneous shelf break offshore south Texas. Art Berman and I gazed at a GOM activity map and pondered how that amount of sand could have been deposited so far out into the basin. Our working hypothesis was that this sand deposit was due to a drop in base level, but we also knew that the worldwide sea level was not in decline at that time. A log of the nearby Shell Great White well shows that this sand deposition began suddenly and ended suddenly. This was also puzzling, since we were trained to expect gradational coarsening-upward bedding during regression and fining-upward during transgression, rather than the sharp contacts we were seeing. Sudden avulsion of a major river in a deltaic environment could produce something like this, but how could it happen far beyond the shelf edge?

Added on 01 April, 2020

Explorer Article By Roger Slatt

Past, Present and Future of Petroleum Research Consortia in the Geosciences

AAPG Honorary Member and University of Oklahoma geoscience professor Roger Slatt speaks to the vital yet dwindling role of research consortia in advancing education and scientific advancement.

Added on 01 March, 2020

Explorer Director’s Corner By David Curtiss

Usher in ‘A Fascinating New Era’ with GEO 2020

Traveling to the Middle East is something that I get a lot of questions about, particularly from colleagues and friends in the United States and Europe who have never done so. Based on the headlines they read, they’re surprised to hear me say that it is one of my favorite places to travel. The people of the Kingdom of Saudi Arabia warmly welcomed IPTC attendees, and a spirit of hospitality pervades cultures in the Middle East. You need to experience it. And next month we, AAPG, together with EAGE and SEG, will enable you to do just that as we launch GEO 2020, the 14th Middle East Geosciences Conference and Exhibition in Bahrain, with the theme “Geosciences in the Digital World: 2020 and Beyond.”

Added on 01 February, 2020

Explorer Article By Gretchen Flint

Announcing the New Line-Up of Speakers for the 2019-20 Distinguished Lecture Program

Five internationally acclaimed geoscientists have been named for this season’s AAPG Distinguished Lecture program, the Association’s flagship offering of cutting-edge geoscience excellence that once again will be accessible to everyone, everywhere, at any time.

Added on 01 December, 2019

Workshop

Khobar, Saudi Arabia

Monday, 9 October – Wednesday, 11 October 2023, 8:00 a.m.–5:00 p.m.

5th Edition: Siliciclastic Reservoirs of the Middle East

Mark your calendars and save the date to attend the 5th edition of the AAPG Siliciclastic Reservoirs of the Middle East GTW which will be held for the first time in Al-Khobar, Saudi Arabia from 9-11 October 2023. We look forward to having you on board for the new edition of these popular series.

Added on 16 November, 2022

Workshop

Khobar, Saudi Arabia

Monday, 4 March – Wednesday, 6 March 2024, 8:00 a.m.–5:00 p.m.

4th Edition: Stratigraphic Traps of the Middle East

Join us for the 4th Edition of: "Stratigraphic Traps of the Middle East" workshop. The workshop will be hosted by AAPG in Al Khobar, Saudi Arabia 4-6 March 2024.

Added on 16 November, 2022

Workshop

Khobar, Saudi Arabia

Monday, 8 May – Wednesday, 10 May 2023, 8:00 a.m.–5:00 p.m.

2nd Edition: AAPG/SPWLA Low Resistivity Reservoirs: Path to Explore, Discover and Develop

“Wait! There is a short cut. Turn right from here”. That’s probably the sound of an electric current bypassing the resistive hydrocarbons, in a maze or network of porous media, when traveling from transmitter to receiver. This workshop will serve the participants need with the up to date advancements in describing and characterizing low resistivity and low contrast pay, and eventually, maximize resources.

Added on 15 November, 2022

Workshop

Lisbon, Portugal

Wednesday, 21 June – Thursday, 22 June 2023, 8:00 a.m.–5:00 p.m.

Mixed/Hybrid Systems (Turbidite, MTDs and Contourites) on Continental Margins

This 3-day conference brings together diverse experts working on modern and ancient turbidite, MTDs, contourite and hybrid/mixed systems in order to improve the present-day knowledge, models and predictive power.

Added on 06 February, 2020

Field Seminar

Lisbon, Portugal

Tuesday, 20 June 2023, 8:00 a.m.–5:00 p.m.

Late Jurassic Deep Water Depositional Systems from the Late Jurassic of the Lusitanian Basin

Come along on this 1-day field seminar and tour outcrops in the Serra de Montejunto, just north of Lisbon and on the coast from Porto Novo to Paimogo. Instructors: Ricardo Pereira, GeoBioTec - Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa. Gil Machado, ChronSurveys Lda & Instituto Dom Luiz Fees: €190 - Local VAT applicable Limit: 20 Participants Includes: Ground Transportation Snacks and Refreshments Lunch and Dinner Guidebook Departure Time/Location 20 June 2023 8:30am Hotel Dom Pedro Note:Transportation to start point is not included in the costs of this trip. Please bring clothing for hot day time temperatures (sun hat/ sun glasses/ sun cream etc.). Participants must wear suitable and comfortable light trekking shoes. Aims To gain or increase an understanding of the tectono-sedimentary processes of continental extension and rifting supported by outcrop observations, with focus on deep-depositional marine systems. Discuss implications for prospective petroleum systems. Promote debate and nourish new insights between attendants. About the Field Trip The Lusitanian Basin records the proximal events of syn- to post rift evolution of the hyper-extended West Iberian Margin, showing some outstanding examples of the combined tectono-stratigraphic depositional systems. Here, the Late Jurassic reveals diverse aspects of mixed marine depositional systems including not only submarine fans and turbidites, but also the build-up of carbonate reefs and shoreface to fluvial clastic sequences. Throughout the field trip the different depositional aspects can be observed in detail to demonstrate how such depositional systems can vary in time and space. Observation of these outcrops allows a better understanding on how deep-water depositional systems can change within a sub-basin and help improving the understanding of reservoir properties.

Added on 06 February, 2020

Online e-Symposium

Thursday, 22 October 2009, 12:00 a.m.–12:00 a.m.

Fluvial Stratigraphy

This course can help you gain the ability to describe the complex and highly variable reservoirs, which are typified by complex internal heterogeneity.

Added on 02 December, 2013

Online e-Symposium

Thursday, 30 August 2012, 12:00 a.m.–12:00 a.m.

Mississippian Carbonates in Kansas: Integrating Log, Core & Seismic

The entire Middle Pennsylvanian–to–top Precambrian basement (500 m) interval was cored in early 2011 in the BEREXCO Wellington KGS #1-32 well in Wellington Field, Sumner County, KS.

Added on 11 December, 2013

Online e-Symposium

Thursday, 19 August 2010, 12:00 a.m.–12:00 a.m.

Challenging the Paradigm 'Missing Section = Normal Fault' and Implications for Hydrocarbon Exploration

This presentation will show where there are cases of missing sections, but none of them can be attributed to normal faulting.

Added on 02 December, 2013

Online e-Symposium

Thursday, 8 December 2011, 12:00 a.m.–12:00 a.m.

Connectivity in Fluvial Systems

This e-symposium focuses on methods for predicting connectivity within clastic fluvial systems.

Added on 11 December, 2013

Online e-Symposium

Wednesday, 5 March 2014, 12:00 a.m.–12:00 a.m.

Virtual Field Trip: Geology of the Grand Canyon, Bryce Canyon, and Zion National Parks

Explore three of the great wonders of the geological world. Take a guided tour of classic geological sites on the Colorado Plateau.

Added on 11 December, 2013

Webinar By Juan Pablo Lovecchio

Virtual Webinar

Tuesday, 30 June 2020, 1:00 p.m.–2:00 p.m.

Rifting: How Breaking Continents Can Create Exploration Opportunities

Visiting Geoscientist Juan Pablo Lovecchio reviews general aspects of rifting, rifts and passive margin formation and evolution through time, as well as elements of petroleum system development.

Added on 30 June, 2020

Webinar By Elda Miramontes

Virtual Webinar

Thursday, 19 November 2020, 12:00 p.m.–1:00 p.m.

Current-Controlled Sedimentation in Deep-Water Systems: Past, Present and Future Challenges

Another in a series of AAPG Visiting Geoscientist Presentations organized by the Manchester University AAPG Student Chapter. Sponsored by BP. Presented by Visiting Geoscientist Elda Miramontes, University of Bermen, Germany Webinar presented via Zoom on 19 November at 5:00pm (GMT-0)

Added on 10 November, 2020

Online e-Symposium

Thursday, 25 August 2011, 12:00 a.m.–12:00 a.m.

Overview of Hydraulic Fracturing Mechanics, Analysis and Design

This e-symposium provides highlights of the hydraulic fracturing mechanics, analysis, and design, and is derived from a two and one-half (2-1/2) day course which is designed for drilling, completion, production engineers, engineering technicians, geologists, well-site and completion supervisors, and managers, who desire to possess a comprehensive and integral knowledge of Hydraulic Fracturing.

Added on 02 December, 2013

Webinar By Mauricio Isreal Guizada Duran

Virtual Webinar

Tuesday, 23 June 2020, 2:00 p.m.–3:00 p.m.

Geology and Geophysics of Oil Exploration – Andes Exploration - Spanish Talk

Visiting Geoscientist Mauricio Guizada provides an overview of general structural geology of the Andes, with a focus on the Central Andes. His talk covers topics related to onshore exploration, G&G methods in exploration and risk analysis. Join Mauricio Guizada via Zoom on June 23 at 4pm CDT.

Added on 28 May, 2020

Webinar By Vitor Abreu

Virtual Webinar

Tuesday, 5 May 2020, 12:00 p.m.–1:00 p.m.

Sequence Stratigraphy: Past, Present and Future

Sequence stratigraphy is a method for stratigraphic interpretation, pioneered by Vail and colleagues in the mid 70’s, which explains the complex geometries that sediments create as they fill accommodation in response to changes in rates of sedimentation, subsidence, uplift and eustasy. This method was developed based on observations and concepts developed as early as in the 1800’s. Based on this strong scientific foundation, pioneer work from Caster, Sloss, Wheeler, Campbell, and Asquith established the basis for the methodology. These researchers established a new way to correlate stratigraphic units, demonstrating the time-transgressive nature of lithostratigraphic formations.

Added on 05 May, 2020

VG Abstract By Keith Gerdes

Tethyan Carbonates - Linking Tropical Seas and Crashing Plates to Some of the Largest Oil and Gas Fields in the World

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.

Request a visit from Keith Gerdes!

Added on 24 August, 2015

DL Abstract By Tao Sun

Integrated Reservoir Characterization and Modeling with Computational Stratigraphy

As oil and gas exploration and production occur in deeper basins and more complex geologic settings, accurate characterization and modeling of reservoirs to improve estimated ultimate recovery (EUR) prediction, optimize well placement and maximize recovery become paramount. Existing technologies for reservoir characterization and modeling have proven inadequate for delivering detailed 3D predictions of reservoir architecture, connectivity and rock quality at scales that impact subsurface flow patterns and reservoir performance. Because of the gap between the geophysical and geologic data available (seismic, well logs, cores) and the data needed to model rock heterogeneities at the reservoir scale, constraints from external analog systems are needed. Existing stratigraphic concepts and deposition models are mostly empirical and seldom provide quantitative constraints on fine-scale reservoir heterogeneity. Current reservoir modeling tools are challenged to accurately replicate complex, nonstationary, rock heterogeneity patterns that control connectivity, such as shale layers that serve as flow baffles and barriers.

Request a visit from Tao Sun!

Added on 20 July, 2022

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