Explorer Article

Going deeper: The Gulf Basin Depositional Synthesis project continues to prove that there’s still much to learn about the Gulf of Mexico.

American Association of Petroleum Geologists (AAPG)
Explorer Foundation Update

Recipients of this year’s L. Austin Weeks Undergraduate Grants have been announced by the AAPG Foundation, which sponsors the annual program that supports educational expenses.

American Association of Petroleum Geologists (AAPG)
Explorer Director’s Corner

The Grammys and the Academy Awards all have been given, and now it’s our turn on the red carpet.

American Association of Petroleum Geologists (AAPG)
Explorer Article

Coexist – often easier said than done, especially when the exploration industry is attempting to work in highly populated or environmentally sensitive areas. So how does it work in California?

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Fayetteville Shale– The Sequel: The play has a glorious past, but technological advances and data integration are making its present – and future – even better.

American Association of Petroleum Geologists (AAPG)
Explorer Historical Highlights

After World War II – possibly as part of the Marshall Plan – Shell was obliged to give an American company a half interest in the acreage it held in Netherlands.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Containing costs and reducing risks are good basics for any project, but for smaller exploration companies – like many in the U.S. mid-continent region – they can be go-or-no factors.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

When it comes to understanding the Marcellus Shale, it’s all about the fractures.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

A chance to visit and study awe-inspiring coastal geology will be offered at the third Central and North Conjugate Margins Conference at Trinity College, Dublin, Ireland.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Globe trotting: A small independent company based in Denver is proving you don’t have to be a super-sized mega-firm to succeed in the international arena.

American Association of Petroleum Geologists (AAPG)
Workshop
Manama, Bahrain
Monday, 10 January Wednesday, 12 January 2022, 8:00 a.m.–5:00 p.m.

The workshop aims to provide a comprehensive understanding of the source rocks in the Middle East. The technical program is developed in a way that coves the depositional environments and transport processes, basin modeling and detailed rock characterisation including geochemisty, geomechanics and petrophysics.

American Association of Petroleum Geologists (AAPG)
Field Seminar
Ipoh, Malaysia
Friday, 26 November 2021, 8:00 a.m.–9:00 a.m.

Seri Iskander, Perak, Malaysia Optional Trip Date: 26 November, 2021 Time: To be determined View Information On CO₂ Laboratory Further details to come.

American Association of Petroleum Geologists (AAPG)
Workshop
Virtual Workshop
Tuesday, 23 November Thursday, 25 November 2021, 2:00 p.m.–5:45 p.m.

High CO2 fields and marginal fields (due to high levels of contaminants) are some of the challenges that are prevalent in the Asia Pacific petroleum industry. Join AAPG Asia Pacific for a 2-day workshop focused on best practices, risk-based planning and the role geoscientists and engineers will play in these changing times.

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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American Association of Petroleum Geologists (AAPG)

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