Harris Presidency Will Be Bad News for Oil - 25 July, 2024 07:30 AM
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AAPG has a history of providing good professional education to its members. This has been an important AAPG service, but now we are at a crossroads as a provider.
Registrations are now being accepted for this year’s AAPG Annual Convention in Houston – and registering by Feb. 17 could bring you considerable savings.
Still going strong: The Barnett Shale continues merrily on its prolific ways, thanks in part to the Texas-sized success there of horizontal drilling
Arkoma Basin gas play. The next big thing? Explorers are scrambling to grab leases in the Arkoma Basin’s shale-gas play.
Check out some of the major discoveries reported over the past year.
A toast! A toast to Ida Glenn No. 1 ... one hundred years ago the Ida Glenn No. 1 came in and began Oklahoma's oil legacy.
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.
Sam Bibler
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.
EMD announces technical paper awardees.
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.
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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