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Sedimentology and Stratigraphy

07 Sep

Siliciclastic Reservoirs of the Middle East Call for Posters Expires in 90 days

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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 Article By Heather Saucier

Seeking the 'Goldilocks Window' of the Austin Chalk

'Sourced in part by the Eagle Ford Group, the Austin Chalk has been a hot spot for operators on and off for a century. The rise of horizontal drilling and hydraulic fracturing brought a renewed interest in the formation, which has produced new discoveries in Texas and Louisiana. Yet in parts of the Austin Chalk, extracting oil and gas can be extremely tricky. Several years ago, the Carbonate Reservoir Characterization Research Laboratory at the University of Texas began a project to analyze approximately 40 cores from the Austin Chalk – the first group to do so. '

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 Emphasis Article By Barry Friedman

A New Approach to Automated Well-Log Correlation in Three Dimensions

Geologists will soon have a set of software tools that can automatically correlate hundreds of stratigraphic tops that will encompass thousands of well logs. The new approach – a software Python package, ChronoLog – will potentially change how such compilations are done.

Added on 01 June, 2020

Explorer Emphasis Article By David Brown

Anadarko Basin: A Super Super Basin

They might have to invent a new designation for the Anadarko Basin: “super-super basin.” An extraordinarily deep basin, it towers far above the standard definition of a Super Basin – a basin containing multiple reservoirs and source rocks with cumulative production of at least 5 billion barrels of oil equivalent, and future production potential of more than 5 billion boe. The Anadarko has all that and more.

Added on 01 June, 2020

Learn! Blog By Susan Nash

Interview with Gil Machado on Salt Biostratigraphy: Science and Technology Showcase

Fossils and microfossils can be used to determine information about evaporites as well as carbonates and clastics. This is an area that is growing in importance. Join Susan Nash for an interview with Gil Machado, Ph.D. from the University of Lisbon who discusses salt biostratigraphy and its new usefulness.

Added on 15 May, 2020

Asia Pacific Blog By Adrienne Pereira

Posamentier and Jackson to Kickoff AP Digital Events Series

AAPG Asia Pacific is proud to announce the first two sessions of AAPG Asia Pacific Presents, a collection of online presentations being offered free of charge.

Added on 07 May, 2020

Explorer Article By Michael McWalter

Petroleum Geoscientists Gather in Paradise

Some 257 people gathered at the beautiful new Hilton Hotel in Port Moresby, Papua New Guinea in the last week of February 2020 to attend the first AAPG/EAGE Papua New Guinea Petroleum Geoscience Conference and Exhibition. The theme for the conference was, “PNG’s Oil and Gas Industry Maturing Through Exploration Development and Production.”

Added on 01 May, 2020

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

The fifth annual AAPG Siliciclastic Reservoirs of the Middle East Workshop will take place in Al Khobar in Saudi Arabia from 9 – 11 October 2023. This workshop will bring together professionals from the region to share their knowledge and experience related to siliciclastic reservoirs and showcase the best success stories in the industry on understanding and utilizing oil and gas siliciclastic reservoirs in the region.

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

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

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

Online e-Symposium

Thursday, 23 July 2009, 12:00 a.m.–12:00 a.m.

3D Seismic Profiles of U.S. Shale Plays

As commodity prices have dropped, many shale plays have become uneconomical as statistical plays and have increasingly become recognized as geological plays demanding new insights from data.

Added on 02 December, 2013

Webinar By Julio Friedmann

Virtual Webinar

Friday, 11 December 2020, 11:30 a.m.–12:30 p.m.

Julio Friedmann - Geoscience and the Energy Transition – Abundance and Opportunity in Challenging Times

In a world moving to net-zero emissions during the COVID-driven oil price collapse, there remain important scientific and business opportunities for geoscientists, particularly those with expertise in stratigraphy, sedimentology, reservoir geology and hydrocarbon production. In this webinar, Dr. Julio Friedmann, senior research scholar, Center on Global Energy Policy, Columbia University discusses the challenges this community faces which are not scientific or technical, but rather involve shifts in business model, policy and global market trends. Webinar presented via Zoom on 11 December 2020 at 11:30 am CST (UTC-6).

Added on 08 December, 2020

Online e-Symposium

Thursday, 4 October 2012, 12:00 a.m.–12:00 a.m.

Microseismic Imaging of Hydraulic Fractures: Snap, Crackle and Pops of Shale Reservoirs

Effective hydraulic fracture stimulation is critical for shale development, and microseismic is the only technology able to map the growth of these hydraulic fracture networks.

Added on 11 December, 2013

Webinar By Amy Henry,David Tonner,Larry R. Davis,Matt Bell,Susan Nash

Virtual Webinar

Wednesday, 20 May 2020, 7:00 p.m.–8:30 p.m.

Pivoting Week 3: New Revenue and Diversification Strategies

Join us for 'Matching Capabilities and Capacity With Current and Emerging Demand Areas; Building a Business Plan That Reflects the Realities of Opportunities'. Webinar will be presented via Zoom 7pm - 8:30pm CDT, 20 May 2020. During this webinar we will discuss: Matching technologies and companies Keys to Building a Resilient Early-Stage Business Multi-Industry Technology: Robotics as a Service

Added on 17 June, 2020

Online e-Symposium

Thursday, 26 September 2013, 12:00 a.m.–12:00 a.m.

Overpressure in Shale Gas – When Geochemistry and Engineering Data Meet and Agree

The presentation will discuss key reservoir information and how to develop a predictive pressure model.

Added on 11 December, 2013

Online e-Symposium

Thursday, 12 July 2012, 12:00 a.m.–12:00 a.m.

Shale Wells: Making the Engineering Fit What Geology Offers

This presentation will look at well placement vertically in the pay, well azimuth and well trajectory with explanations of how geology and post-depositional effects can make the difference between a successful well and a failure.

Added on 11 December, 2013

Webinar By Stephen Ehrenberg

Virtual Webinar

Monday, 19 October 2020, 12:00 p.m.–1:30 p.m.

The Etiology of Carbonate Porosity

In this webinar, Stephen Ehrenberg will present a review of the various processes that interact to determine the wide variations in porosity found in carbonate strata containing petroleum reserves. Presentation is via Zoom on Monday 19 October at 12:00 London time.

Added on 02 October, 2020

Webinar By Andy Pepper

Virtual Webinar

Wednesday, 12 January 2022, 8:00 a.m.–9:00 a.m.

Seven Principles that hold back Geologists from Discovery Thinking: Seven Habits of the Effective Petroleum Systems Analyst

Using global examples and based on 40 years’ experience in mainstream geology and in Petroleum Systems Analysis, Andrew Pepper will discuss how re-thinking some of our paradigms can open up our minds to new Discovery Thinking in any old or new basin.

Added on 04 January, 2022

Webinar By Kevin Hill,Peter Grant

Virtual Webinar

Thursday, 2 July 2020, 4:00 p.m.–5:00 p.m.

The Bight Basin, South Australia, One of the World's Largest Unexplored Deltas. Evolution and Prospectivity; Seismic, Structure, and Balanced Sections

Presented by Kevin C. Hill, Associate Professor, University of Melbourne Gravity modelling of Australia's southern margin reveals that the initial rift with Antarctica was beneath the current Ceduna Delta. A regional, high-quality seismic traverse from the coast to oceanic crust across the Bight Basin has been assembled and interpreted in detail, then balanced, restored, decompacted, and replaced at paleo-water depths. The Late Cretaceous Ceduna Delta developed above a Late Jurassic-Early Cretaceous rift basin in three stages punctuated by significant pulses of uplift and erosion across areas >100 km wide and with up to 1 km of erosion. The Cenomanian White Pointer delta prograded into deepening water and hence underwent gravitational collapse. This was terminated in the Santonian when the Antarctic margin was pulled out from below, thus supplying heat to a remnant thicker outer margin crust, causing doming and erosion. Importantly, this established the saucer-shaped geometry of the Ceduna Delta that persisted throughout its development, so that any hydrocarbons generated in the southern half of the basin would have migrated towards this outer margin high. The Tiger Formation was deposited in shallow water in a full rift basin prior to breakup, which was followed by regional thermal subsidence. The Hammerhead delta developed on the newly formed passive margin but was terminated by another pulse of uplift and erosion, perhaps associated with a change in plate motion at the end of the Cretaceous. The finite element modelling of this proposed tectonic evolution will test its validity and predict hydrocarbon generation and migration through time.

Added on 02 July, 2020

Webinar By Juan Carlos Llinás

Virtual Webinar

Tuesday, 14 April 2020, 6:00 p.m.–8:00 p.m.

The Jurassic Proximal Carbonate Ramp in the NE Gulf of Mexico: a Setting for Thrombolite Buildups - Spanish Talk

La Formación Smackover del Jurásico Superior (Oxfordiano) es una de las productoras de petróleo y gas más prolíficas de la llanura costera del noreste del Golfo de México, depositada en una rampa de carbonato proximal. Este estudio es una caracterización integral del ambiente de depositación de la Formación Smackover basada en datos sísmicos 3D y de pozos en los campos Vocation y Appleton situados en las subcuencas de Conecuh y Manila, en el suroeste de Alabama.

Added on 27 May, 2020

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

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

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