The Asia Pacific Region (APR) video library includes a collection of recordings from virtual events, including the Visiting Geoscientist series. Videos are available for viewing on demand.

Patawarta Diapir, approximately 2-6km2 located in the Central Flinders Ranges, South Australia, has been interpreted as a single allochthonous salt sheet containing Tonian-aged igneous and layered evaporite sedimentary intrasalt inclusions derived from the Callanna Group. In this webinar, Rachelle Kernen describes the diapir as five primarily silty limestone inclusions (0.5-2km2), re-interpreted as Ediacaran-aged Wonoka Formation and Patsy Hill member of the Bonney Sandstone (Wilpena Group). Webinar presented Thursday 3 December 2020 at 11:00 SGT (GMT+8) Singapore time
Hear John Kaldi speak about Integrated Approaches to Determining Net Pay: Caveats & Lessons Learned. Webinar presented via Zoom on Thursday 19 November 2020 at 11:00 SGT (GMT+8) Singapore time.
Join us to hear Jean-Jaques Biteau talk about key parameters controlling pressure regimes, trap sealing at the level of both the basin and the prospect, as well as areas of uncertainty. Webinar was presented on Thursday 22 October at 15:00 SGT (UTC+8) Singapore time zone.
Join us as Doug Peacock discusses how changes in oil price impact reserves in theory, and with practical industry examples. Webinar was presented via Zoom on Thursday 8 October 15:00 SGT (UTC+8) Singapore time zone
Join AAPG Asia Pacific to hear Agus Ramdahn, PhD to hear about a method of combining Bowers Method with density-sonic cross plots to estimate overpressure in the shelfal area of the Lower Kutai Basin This webinar was presented via Zoom on Thursday 1 October at 11:00 Singapore Time
In the past 3 decades the sequence stratigraphy jargon has proliferated, resulting in multiple definitions of the same surface or new surfaces and units based on drawings of deposition in response to relative changes in sea level. The close association between base-level changes, the formation of surfaces, and specific stratal stacking that define systems tracts are at the heart of the confusion. This webinar is proposed a back-to-basics approach, emphasizing key observations that can be made from any geologic data: lithofacies, lithofacies association, vertical stacking, stratal geometries, and stratal terminations.
Economic oil and gas fields have been increasingly found in deep-water continental margins for the past decade, where potential prospects record the key tectonic events associated with plate breakup and continental drift. In these regions, the exploitation of economic resources must take into account sustainable practices and environmental concerns of local populations. This talk will present case studies from multiple continental margins to then extrapolate major findings to basins in SE Asia.
There are over 300 known active onshore mud volcanoes globally, and many more offshore. Mud volcanoes are subsurface fluid escape features in which high pore pressures drive fluids, gases, and subsurface sediments to the surface. This talk will summarize mud volcanoes around the world and examine mud volcano plumbing systems and their link to petroleum systems.
Geologic interpretations are the basis of most exploration workflows, whether building a 3-D framework, a geocellular model, or modeling HC basins and estimating HC reserves. All these workflows rely on the most realistic and accurate interpretation in order to produce high-confidence results. Join us to hear from Catalina Luneburg, founder and director of TerraEx Group and specialist in the validation of HC basins and structural geology modeling.
These core purposes are as important now as they were when AAPG formed in 1917. AAPG is a mainstay of Gretchen's career because of the geoscientific knowledge, networking, education, and training she has received in more than 20 years of actively volunteering and from passively consuming AAPG publications earlier in her career. In this webinar, Gretchen Gillis, current President-Elect of AAPG, will illustrate the value of AAPG to its members in the current economic environment.
Bruce Ainsworth, Principal Reservoir Geoscientist, Chevron Sequence stratigraphy based on wireline logs, cores and outcrops is entering its fourth decade of mainstream usage in industry and academia. The technique has proved to be an invaluable tool for improving stratigraphic analyses in clastic shallow marine systems. In this talk we will present a simple quantitative technique to support sequence stratigraphic interpretations. The technique, utilizes two pieces of data that are readily available from every subsurface field or outcrop study; 1) parasequence thickness (T) and 2) parasequence sandstone fraction (SF). The key assumptions are that parasequence thickness can be used as a proxy for accommodation at the time of deposition, and parasequence SF can be used as a proxy for sediment supply. This means that quantitative proxies for rates of accommodation development and sediment supply can be acquired from wireline logs, cores and outcrop data. Vertical trends in parasequence thickness divided by SF (T/SF) approximate trends expected in systems tracts for changes in the ratio of rate of accommodation development to rate of sediment supply (δA/δS). The technique, termed “TSF analysis”, can also be applied at lower-order sequence and composite sequence scales. It provides a quantitative and objective methodology for determining rank and order of sequence stratigraphic surfaces and units. Absolute TSF values can be utilized to determine shoreline, stacked shoreline and shelf margin trajectories. Case studies are presented which demonstrate the robustness of the technique across a range of different data sets. Implications and potential future applications of TSF analyses will also be discussed. 
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.
Presented by Alexei V. Milkov, Director of Potential Gas Agency, Colorado School of Mines An exploration company is successful when it predictably and consistently creates high value from petroleum exploration. When defined like that, exploration success depends on the right combination of property (acreage), processes, people, and luck. In this talk, I will address less-understood elements of the exploration success equation such as forecasting abilities explorers, related biases, and the role of randomness, serendipity, and luck in the outcomes of exploration projects.
Salt welds form due to salt thinning by mechanical (e.g., salt-flow) and/or chemical (e.g., salt-dissolution) processes. This webinar explores how we use 3-D seismic reflection, borehole, and biostratigraphic data to constrain the thickness and composition of salt welds, and to test the predictions of analytical models for salt welding.
Henry W. Posamentier discusses the application of 3-D seismic stratigraphic analyses to the mitigation of risk associated with lithology prediction prior to drilling – workflows and techniques. Principles and workflows of seismic stratigraphy and seismic geomorphology will be discussed and numerous examples will be shown from a variety of different depositional settings.

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