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Explorer Article

The old question about reserve estimates: How much oil does the earth have? The new question: Does anyone have any idea?

American Association of Petroleum Geologists (AAPG)
Explorer Article

The Jonah Field in the northern Greater Green River Basin, one of the largest gas discoveries in the last decade and a poster child for basin centered gas. The Standard Draw-Echo Springs Field in the Washakie Basin, which was found in the 1970s and was one of the original fields determined to be a large, basin centered gas accumulation.

American Association of Petroleum Geologists (AAPG)
Explorer Article

Shanley, Robinson and Cluff weigh in on future E&P direction

American Association of Petroleum Geologists (AAPG)
Explorer Article

Conventional wisdom regarding basin-centered gas accumulations has sparked a geologic debate in Colorado.

American Association of Petroleum Geologists (AAPG)
Explorer Article

Geology without borders, part III: The prolific Trenton-Black River fairway is bringing exploration success and possibilities to Canada's Anticosti Island.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Take a look through the U.S. perspective regarding the development of energy fuels world wide.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

The energy industry is at a crossroads — petroleum is in the rearview mirror and a methane-based economy is squarely ahead.

American Association of Petroleum Geologists (AAPG)
Explorer Article

The program is being finalized, but the time to start preparing for the year's premier international meeting is now.

American Association of Petroleum Geologists (AAPG)
Explorer Geophysical Corner

The application of seismic data to stratigraphy and depositional systems analysis has been widespread at least since the publication of AAPG Memoir 26, over 27 years ago.

American Association of Petroleum Geologists (AAPG)
Explorer Division Column EMD

The Energy Minerals Division's technical program for the annual meeting in Dallas April 18-21 brings the latest research findings and up-to-date information on commodities and topics of EMD interest.

American Association of Petroleum Geologists (AAPG)
Workshop
Naples, Italy
Wednesday, 22 June Thursday, 23 June 2022, 8:00 a.m.–5:00 p.m.

Modelling carbonate sequences and reservoirs has always been a challenging task. Carbonate rocks are generated and subsequently modified by a large variety of biological, physical and chemical processes that start at the time of deposition and end today. To unravel the geological evolution and history of carbonate sequences is fundamental not only for understanding their hydrocarbons potential but also for their role as potential reservoirs for renewable energy (geothermal) or geological gas storage (CO2 and hydrogen). Several science disciplines are often involved to fully understand the characteristics of carbonate rocks and old approaches and new technologies and tools are nowadays applied in these types of sequences. The objective of this meeting is to allow scientists and engineers working on carbonate rocks in academia and industry to share their most recent experience, work, approaches and use of innovative technologies to increase the understanding of the very complex world of carbonates.

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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)
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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