Explorer Emphasis Article

On Feb. 11, Colombia’s state oil company Ecopetrol signed a joint venture with Royal Dutch Shell granting the company 50-percent working interest in the Fuerte Sur, Purple Angel and Colombia-5 blocks located in the Southern Colombian Caribbean. Shell is not the only company taking note of Colombia’s offshore potential. Noble Energy entered the country in 2018 and obtained its first acreage position with a 40-percent operational stake in the COL-3 and GUA OFF-3 blocks in March 2019. Ian Gordon, Colombia country manager for Noble, said the country has a lot to offer to companies seeking offshore opportunities.

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American Association of Petroleum Geologists (AAPG)
Explorer Historical Highlights

Spindletop’s glory days were gone, or so it was believed. That landmark discovery on Jan. 10, 1901 at Spindletop Hill near Beaumont, Texas had defied existing American geological thought and changed the course of history, but had faded into memory by the 1920s. But, a novel geological hypothesis would soon change all that.

American Association of Petroleum Geologists (AAPG)
Explorer Historical Highlights

The Casablanca oil field, discovered in 1975 and located on the Mediterranean shelf edge, has been greatly significant in the world’s offshore oil industry activity, besides being by far the biggest oil field in Spain.

American Association of Petroleum Geologists (AAPG)
Explorer Historical Highlights

Little more than a novelty when first discovered, helium has become a key commodity. It is used extensively in medical cryogenics, analytical and lab applications, breathing mixtures, as a lift gas, for arc welding, leak detection and, contrary to popular belief, only a little is used to inflate party balloons. There are few substitutes for helium and so, as its applications have become more common, demand has grown and supply is struggling to match demand.

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American Association of Petroleum Geologists (AAPG)
Explorer Geophysical Corner

The challenges of the Mina El Carmen Formation can be overcome by evaluating the application of various interpretation tools and special processes, so that the reservoir sands can be detected and visualized in terms of their geometry, orientation, extension, thickness and position in the stratigraphic column.

American Association of Petroleum Geologists (AAPG)
Explorer Article

With the U.S. Department of the Interior calling for updated assessments of the oil and gas resources on Alaska’s North Slope, most surprisingly the tightly regulated 1002 Area of the Arctic National Wildlife Refuge, geologists are preparing for the possibility of exploring a frontier believed to be rich in hydrocarbon resources.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Offshore opportunities from Aruba to the Falkand Islands have national and independent companies keeping their eye on Latin America.

American Association of Petroleum Geologists (AAPG)
Middle East Blog

Accompanying the Structural Styles in the Middle East GTW this field trip will be on 10 May from 3-7 p.m. and will be led by Mohammed Al Kindi of GSO. **The field trip is included as part of the workshop registration fees. However, please note that seats are limited and will be available on a first-come first-served basis.**

American Association of Petroleum Geologists (AAPG)
Search and Discovery Article

The driving forces for conventional accumulations (structural or stratigraphic traps) are Forces of Buoyancy which are due to differences in densities of hydrocarbons and water. In contrast, the driving forces for unconventional tight accumulations are Forces of Expulsion which are produced by high pressures. That is an enormous difference and creates unconventional petroleum systems that are characterized by very different and distinctive characteristics. The Force of Expulsion pressures are created by the significant increase in volume when any of the three main kerogen types are converted to hydrocarbons. At those conversion times in the burial history, the rocks are already sufficiently tight so the large volumes of generated hydrocarbons cannot efficiently escape through the existing tight pore system, thus creating a permeability bottleneck that produces an overpressured compartment over a large area corresponding to the proper thermal oil and gas maturities for that basin. The forces initially created in these source rocks can only go limited distances into adjacent tight reservoirs (clastics or carbonates) above or below the source. The exact distance will vary depending on the pressure increase, matrix permeability, and fractures of that specific tight reservoir system. In general, the distances are small, in the orders of 10s to 100s of feet for oil and larger for more mobile gas systems. Those exact distance numbers are subject to ongoing investigations.   A plot of the pressure data versus elevation for a given formation is critical in determining whether an accumulation is conventional or unconventional. Conventional accumulations will have hydrocarbon columns of 10s to 100s of feet with the pressure in the hydrocarbons and that in the water equal at the bottom of the accumulation (at the HC-water contact). In contrast, the unconventional accumulations will show HC column heights of 1000s of feet with the pressure in the hydrocarbon phase and the water phase being the same at the top of the accumulation (at the updip transition zone). Those significant differences are critical for understanding and differentiating these two play types. Because the system is a pore throat bottleneck with very little or minimum lateral migration, the type of hydrocarbon s are closely tied to the thermal maturity required to generate those hydrocarbons. Thus the play concept begins with two important geochemical considerations: (1) where are the source rocks and what are the kerogen types and organic richness (TOC), and (2 ) where are they mature in the basin for oil, condensate, and gas in the basin. These parameters will very quickly define the fairway for the play. Then one has to add the critical information on the reservoirs themselves: composition (brittleness), thickness, and reservoir quality (matrix porosity and permeability). In summary, these tight unconventional petroleum systems (1) are dynamic , and (2) create a regionally inverted petroleum system with water over oil over condensate over gas for source rocks wit h Type I or II kerogen types.

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American Association of Petroleum Geologists (AAPG)
Middle East Blog

Seven exciting GTWs in the Middle East Region in 2017!

American Association of Petroleum Geologists (AAPG)
Workshop
Bogota, Colombia
Wednesday, 17 March Thursday, 18 March 2021, 8:00 a.m.–5:00 p.m.

The AAPG Latin America & Caribbean Region and the Colombian Association of Petroleum Geologists and Geophysicists (ACGGP) invite you join us for GTW Colombia 2021, a specialized workshop bringing leading scientists and industry practitioners to share best practices, exchange ideas and explore opportunities for future collaboration. The 2-day workshop brings together technical experts and industry leaders from Colombia and throughout the Americas to take a multidisciplinary look at future opportunities for exploration and development of Southern Caribbean Frontier Basins.

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American Association of Petroleum Geologists (AAPG)
Webinar
Virtual Webinar
Thursday, 4 June 2020, 3:00 p.m.–4:00 p.m.

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.

American Association of Petroleum Geologists (AAPG)
Webinar
Virtual Webinar
Tuesday, 23 June 2020, 2:00 p.m.–3:00 p.m.

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.

American Association of Petroleum Geologists (AAPG)
Webinar
Virtual Webinar
Tuesday, 30 June 2020, 1:00 p.m.–2:00 p.m.

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.

American Association of Petroleum Geologists (AAPG)
Webinar
Virtual Webinar
Tuesday, 9 June 2020, 4:00 p.m.–5:00 p.m.

Visiting Geoscientist Susan Morrice shares her personal experience and insight in this talk about opportunities for geoscientists. “Geoscientists have advantages ... They are Time Travellers and have open minds. Bringing this creativity and innovation to your company or starting your own! Challenging times bring silver linings!”

American Association of Petroleum Geologists (AAPG)
VG Abstract

In 1991, Gulf Indonesia and its partners discovered South Sumatra Basin’s first major gas field at Dayung in the Corridor PSC. A key feature of this field is that most of the reserves are held within fractured basement rocks of pre-Tertiary age. 

Request a visit from Charles Caughey!

American Association of Petroleum Geologists (AAPG)

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