Explorer Division Column EMD

For more than 100 years, shale oil has referred to the product of pyroly­sis of oil shale, whereas oil shale refers to organic rich (kerogen) rock that has never reached the oil window.

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

One year ago this month I was sitting in AAPG’s GEO-DC office at the American Geosciences Institute in Alexandria, Va., when a 5.8 magnitude earthquake rocked the state.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

What do the numbers indicate when measuring Niobrara tight oil success in Colorado?

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Surprise! Ordinarily a target for oil production, the Cretaceous Niobrara formation is proving to be more versatile in Colorado’s Piceance Basin.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

What goes up must come …: Despite the seemingly never-ending cycles of boom and bust, operators in the Rocky Mountain region are finding ways to stay in the game.

American Association of Petroleum Geologists (AAPG)
Explorer Article

Spreading the word: Nine speakers have been selected for AAPG’s prestigious Distinguished Lecture program for the 2012-13 North American tours.

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

No matter where I travel and talk with AAPG members there are two topics that I’m certain will come up in conversation: First the price of natural gas and second the role of shale gas in driving this price.

American Association of Petroleum Geologists (AAPG)
Explorer President’s Column

In North America onshore, the resource play has caused a dramatic shift in the exploration objectives of many, if not most, independent and major petroleum companies.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

Shale List Grows: Production from unconventional reservoirs, particularly shale, has been a boon to U.S. domestic natural gas stockpiles.

American Association of Petroleum Geologists (AAPG)
Explorer Emphasis Article

All for one and one for all: It took a team effort to find exploration success in theWolfcamp Shale.

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.

Show more
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.

Show more

Request a visit from Ameed Ghori!

American Association of Petroleum Geologists (AAPG)

Committee

Related Interests

See Also ...