Explorer Article

What’s the difference? When it comes to the terms subsalt and presalt, the answer is, “a lot – and it matters.” 

American Association of Petroleum Geologists (AAPG)
Explorer Policy Watch

Congress passes many laws – that is its principal function as outlined in Article I of the U.S. Constitution. It also controls the nation’s purse strings, deciding how tax revenue collected from the people will be spent for the people.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Time after time: Advanced geophysical techniques have been used for identifying fractures in Saudi Arabia. The rest of the story, however, was getting the story …

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

From west to east, with increasing geological complexity, the Utica and Lorraine Shale Gas Fairway comprises three distinct plays.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Northern exposure: That gush of excitement you may feel may be coming from Canada – specifically, eastern Canada – and it’s all because the Utica shale play there may be as big as the Barnett.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

The year of living dangerously: Grim days, challenging conditions, exciting discoveries. A look back at the top global developments of 2009.

American Association of Petroleum Geologists (AAPG)
Explorer Article

The Eagle and the hawk: A still-fledging shale gas play, the Cretaceous Eagle Ford, is making a lot of noise in Texas – and the hawks are circling to get a piece of the action.

American Association of Petroleum Geologists (AAPG)
Explorer Policy Watch

Shortly after lunch on Oct. 14 people began filing into the ballroom of the Tulsa Marriott Southern Hills Hotel. They included attendees of the 2009 AAPG Mid-Continent Section meeting, members of the general public and two busloads of students from local high schools.  They were there to participate in a conversation about energy – its past and its future. 

American Association of Petroleum Geologists (AAPG)
Explorer Article

A recent AAPG Geosciences Technology Workshop examined the contributions, challenges and responsibilities of geoscientists in estimating resources and reserves.

American Association of Petroleum Geologists (AAPG)
Explorer Article

How big is big? A team of U.S. Geological Survey geologists is doing a new assessment of – and taking a “long” look at – the unconventional potential of the Arkoma Basin.

American Association of Petroleum Geologists (AAPG)
Workshop
Virtual Workshop
Tuesday, 26 January Wednesday, 27 January 2021, 8:00 a.m.–4:00 p.m.

This two-day virtual conference aims to bring together industrial and academic persons to educate and develop approaches that will benefit both sectors in the future. The virtual conference will focus on the current techniques, the challenges and future solutions in understanding the Triassic stratigraphy of the Central Graben of the North Sea.

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)
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)
VG Abstract

Production from unconventional petroleum reservoirs includes petroleum from shale, coal, tight-sand and oil-sand. These reservoirs contain enormous quantities of oil and natural gas but pose a technology challenge to both geoscientists and engineers to produce economically on a commercial scale. These reservoirs store large volumes and are widely distributed at different stratigraphic levels and basin types, offering long-term potential for energy supply. Most of these reservoirs are low permeability and porosity that need enhancement with hydraulic fracture stimulation to maximize fluid drainage. Production from these reservoirs is increasing with continued advancement in geological characterization techniques and technology for well drilling, logging, and completion with drainage enhancement. Currently, Australia, Argentina, Canada, Egypt, USA, and Venezuela are producing natural gas from low permeability reservoirs: tight-sand, shale, and coal (CBM). Canada, Russia, USA, and Venezuela are producing heavy oil from oilsand. USA is leading the development of techniques for exploring, and technology for exploiting unconventional gas resources, which can help to develop potential gas-bearing shales of Thailand. The main focus is on source-reservoir-seal shale petroleum plays. In these tight rocks petroleum resides in the micro-pores as well as adsorbed on and in the organics. Shale has very low matrix permeability (nano-darcies) and has highly layered formations with differences in vertical and horizontal properties, vertically non-homogeneous and horizontally anisotropic with complicate natural fractures. Understanding the rocks is critical in selecting fluid drainage enhancement mechanisms; rock properties such as where shale is clay or silica rich, clay types and maturation , kerogen type and maturation, permeability, porosity, and saturation. Most of these plays require horizontal development with large numbers of wells that require an understanding of formation structure, setting and reservoir character and its lateral extension. The quality of shale-gas resources depend on thickness of net pay (>100 m), adequate porosity (>2%), high reservoir pressure (ideally overpressure), high thermal maturity (>1.5% Ro), high organic richness (>2% TOC), low in clay (<50%), high in brittle minerals (quartz, carbonates, feldspars), and favourable in-situ stress. During the past decade, unconventional shale and tight-sand gas plays have become an important supply of natural gas in the US, and now in shale oil as well. As a consequence, interest to assess and explore these plays is rapidly spreading worldwide. The high production potential of shale petroleum resources has contributed to a comparably favourable outlook for increased future petroleum supplies globally. Application of 2D and 3D seismic for defining reservoirs and micro seismic for monitoring fracturing, measuring rock properties downhole (borehole imaging) and in laboratory (mineralogy, porosity, permeability), horizontal drilling (downhole GPS), and hydraulic fracture stimulation (cross-linked gel, slick-water, nitrogen or nitrogen foam) is key in improving production from these huge resources with low productivity factors.

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Request a visit from Ameed Ghori!

American Association of Petroleum Geologists (AAPG)

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