Explorer Regions and Sections

This year marks the second consecutive year for AAPG to participate as a major partner in oil and gas conferences and exhibitions in the Arabian Gulf Region.

American Association of Petroleum Geologists (AAPG)
Explorer Article

The basic rules for finding oil and gas were formulated so long ago that most of them have been forgotten. A review of these rules would be in order for many contemporary exploration managers.

American Association of Petroleum Geologists (AAPG)
Explorer Article

EMD announces technical paper awardees.

American Association of Petroleum Geologists (AAPG)
Explorer Spotlight On…

Three's the charm — at least in some circles and the Winter Education Conference is no exception! New slate of 12 courses will be offered in February to train geologists in a one-stop opportunity.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

The emergence of 3-D ground penetrating radar technology has the potential to drastically alter the traditional approach to fieldwork.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Experts agree that exploring and doing business in today’s oil world demands innovative approaches to your work, whether it’s in looking at new areas for hydrocarbons or looking at old areas in a new way. This month’s EXPLORER takes a look at some of the innovative approaches and visions that already have surfaced – plus some hints at new potential. Cover photos include a view of drilling operations at the Coos Bay Basin in southwestern Oregon (top).

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American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Geophysical officials say that rising energy prices have triggered an increase in demand for seismic services “across the board” — including new data acquisition. The geophysical industry is humming, thanks to recent demands for both land and marine seismic services.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

A gift that keeps on giving: The Gulf of Mexico is not only healthy, it continues to be the star of the show for the U.S. petroleum industry.

American Association of Petroleum Geologists (AAPG)
Explorer Article

Let's make a deal: Summer in Houston is about to get even hotter thanks to the Summer NAPE, a prospects and properties expo that carries the AAPG banner.

American Association of Petroleum Geologists (AAPG)
Explorer Geophysical Corner

To optimize subsurface geophysical interpretations, it is beneficial to place seismic attributes into the proper regional geological context; knowledge of regional geology may assist exploration/exploitation efforts in advance by high-grading attribute selection and attribute intersection for purposes of risk analysis.

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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