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The driving forces for conventional accumulations (structural or stratigraphic traps) are Forces of Buoyancy which are due to differences in densities of hydrocarbons and water. In contrast, the driving forces for unconventional tight accumulations are Forces of Expulsion which are produced by high pressures. That is an enormous difference and creates unconventional petroleum systems that are characterized by very different and distinctive characteristics. The Force of Expulsion pressures are created by the significant increase in volume when any of the three main kerogen types are converted to hydrocarbons. At those conversion times in the burial history, the rocks are already sufficiently tight so the large volumes of generated hydrocarbons cannot efficiently escape through the existing tight pore system, thus creating a permeability bottleneck that produces an overpressured compartment over a large area corresponding to the proper thermal oil and gas maturities for that basin. The forces initially created in these source rocks can only go limited distances into adjacent tight reservoirs (clastics or carbonates) above or below the source. The exact distance will vary depending on the pressure increase, matrix permeability, and fractures of that specific tight reservoir system. In general, the distances are small, in the orders of 10s to 100s of feet for oil and larger for more mobile gas systems. Those exact distance numbers are subject to ongoing investigations.  

A plot of the pressure data versus elevation for a given formation is critical in determining whether an accumulation is conventional or unconventional. Conventional accumulations will have hydrocarbon columns of 10s to 100s of feet with the pressure in the hydrocarbons and that in the water equal at the bottom of the accumulation (at the HC-water contact). In contrast, the unconventional accumulations will show HC column heights of 1000s of feet with the pressure in the hydrocarbon phase and the water phase being the same at the top of the accumulation (at the updip transition zone). Those significant differences are critical for understanding and differentiating these two play types. Because the system is a pore throat bottleneck with very little or minimum lateral migration, the type of hydrocarbon s are closely tied to the thermal maturity required to generate those hydrocarbons. Thus the play concept begins with two important geochemical considerations: (1) where are the source rocks and what are the kerogen types and organic richness (TOC), and (2 ) where are they mature in the basin for oil, condensate, and gas in the basin. These parameters will very quickly define the fairway for the play. Then one has to add the critical information on the reservoirs themselves: composition (brittleness), thickness, and reservoir quality (matrix porosity and permeability). In summary, these tight unconventional petroleum systems (1) are dynamic , and (2) create a regionally inverted petroleum system with water over oil over condensate over gas for source rocks wit h Type I or II kerogen types.

Show more American Association of Petroleum Geologists (AAPG)
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The AAPG Annual Convention and Exhibition will feature a variety of field trips that will bookend the meeting, spanning from March 26 to April 8.

American Association of Petroleum Geologists (AAPG)
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Today, there are 31 sedimentary basins worldwide that produce or have economic discoveries in deepwater, in terms of both modern water depths and reservoir type.

American Association of Petroleum Geologists (AAPG)
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The AAPG European Regional Conference, “Hydrocarbons in the Mediterranean: revisiting mature plays and understanding new and emerging ideas,” will be held Jan. 18-19 in Larnaca, Cyprus.

American Association of Petroleum Geologists (AAPG)
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The dynamics of fluid behavior and structural movement on the nano-scale can be complicated and not always what was expected. New research that analyzes the well information and cores using new techniques and technologies is yielding important and useful results. Welcome to an interview with Wen Zhou, Chengdu University of Technology, who discusses recent research findings.

American Association of Petroleum Geologists (AAPG)
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Primary research in hydrocarbon generation is yielding new insights into the natural gas geochemical characteristics of conventional and unconventional reservoirs, along with discoveries relating to the geomechanical processes. Welcome to an interview with Chenglin Liu, China University of Petroleum-Beijing, who discusses enlightening new findings regarding the relationship between salinity and hydrocarbon geochemical characteristics.

American Association of Petroleum Geologists (AAPG)
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Eastern Mexico has been one of the most prolific and most complex regions of the world, and many believe there is still great potential for undiscovered giant and super-giant fields. Welcome to an interview with Stephen Cossey, whose work in eastern Mexico, both onshore and offshore, are pointing to exciting new potential.

American Association of Petroleum Geologists (AAPG)
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Oil production in North America has the last years surged due to the successful exploitation of unconventional low-permeability (tight) light oil reservoirs in North America by multistage hydraulic fractured horizontal wells.

American Association of Petroleum Geologists (AAPG)
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In-Person Training
Yangon Myanmar 25 February, 2017 28 February, 2017 34027 Desktop /Portals/0/PackFlashItemImages/WebReady/AAPG-EAGE-MGS-Myanmar-Geosciences-Conference-Hero-v2.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Structure, Geochemistry and Basin Modeling, Sedimentology and Stratigraphy, Business and Economics, Engineering, Basin Modeling, Petroleum Systems, Oil and Gas Analysis, Maturation, Clastics, Carbonates, Evaporites, Economics, Reservoir Characterization, Development and Operations, Production
 
Yangon, Myanmar
25-28 February 2017

Due to low registrations, the optional Field Trip is cancelled. Organizers (Myanmar Geosciences Society) will correspond directly with those who have indicated interest.

The Myanmar Geosciences Society will offer a 4-day/3-night field trip to the Kalaw Basin to visit Mesozoic sediments of Kialaw Basin and view conspicuous surface geologic expressions of Sagaing Strike Slip Fault and Shan Boundary fault (Suture Zone), as well as various Paleozoic to Tertiary outcrops along the road sections.

Houston Texas United States 31 March, 2017 01 April, 2017 36560 Desktop /Portals/0/PackFlashItemImages/WebReady/ace17-ft-03-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Field Trips, Conventions, Pre-Convention, Sedimentology and Stratigraphy, Clastics, Fluvial Deltaic Systems, Marine
 
Houston, Texas, United States
31 March - 1 April 2017

In Conjunction with AAPG 2017 Annual Convention & Exhibition (ACE)
This course combines detailed investigations of modern fluvial, estuarine, deltaic, shoreface, and tidal inlet depositional environments with subsurface examples in core to provide participants with a more holistic understanding of the physical, chemical, and biological characteristics of shallow marine and fluvial reservoirs.

Houston Texas United States 01 April, 2017 02 April, 2017 34970 Desktop /Portals/0/PackFlashItemImages/WebReady/ace-sc-04-global-deep-water-siliciclastic-reservoirs-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Conventions, Short Courses, Pre-Convention, Clastics, Sedimentology and Stratigraphy, Deep Sea / Deepwater, Deepwater Turbidites, Marine
 
Houston, Texas, United States
1-2 April 2017

In Conjunction with AAPG 2017 Annual Convention & Exhibition (ACE)
This two-day seminar is designed to provide participants with a modern appreciation of the full spectrum of deep-water reservoirs, their mechanisms of transport and deposition, their stratigraphic architecture, their predictive characteristics, and their 3D heterogeneity.

Houston Texas United States 02 April, 2017 02 April, 2017 36575 Desktop /Portals/0/PackFlashItemImages/WebReady/ace17-ft-05-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Sedimentology and Stratigraphy, Field Trips, Conventions, Pre-Convention, Clastics, Fluvial Deltaic Systems
 
Houston, Texas, United States
2 April 2017

In Conjunction with AAPG 2017 Annual Convention & Exhibition (ACE)
This field trip explores Panther Creek, a natural laboratory to explore the morphology and sedimentological processes of a meandering creek system. Panther Creek is just a short drive north from Houston, tucked away just south of The Woodlands, Texas in the Montgomery County Preserve.

El Paso Texas United States 05 April, 2017 08 April, 2017 36585 Desktop /Portals/0/PackFlashItemImages/WebReady/ace17-ft-08-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true SEPM, Field Trips, Conventions, Post-Convention, Sedimentology and Stratigraphy, Sequence Stratigraphy, Clastics, Slope
 
El Paso, Texas, United States
5-8 April 2017

In Conjunction with AAPG 2017 Annual Convention & Exhibition (ACE)
The field trip will include stops at Shumard Canyon and Bone Canyon to observe the scale and internal architecture of submarine channels incising the bedrock of the relict platform. Other field-trip stops will include Stratotype Canyon, Black Stove Canyon, and Rest Area Gully to observe basin-restricted carbonate and siliclcastic sediment gravity flow deposits, carbonate channel-levee complexes, failure scours associated with the downslope transport of olistostromal blocks, and thick (>50 m) accumulations of recumbently folded deposits associated with these failure events.

Houston Texas United States 06 April, 2017 06 April, 2017 36592 Desktop /Portals/0/PackFlashItemImages/WebReady/ace17-ft-10-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true SEPM, Sedimentology and Stratigraphy, Sequence Stratigraphy, Field Trips, Conventions, Post-Convention, Clastics, Fluvial Deltaic Systems
 
Houston, Texas, United States
6 April 2017

In Conjunction with AAPG 2017 Annual Convention & Exhibition (ACE)
This field trip focuses on the late Quaternary depositional systems of the upper Texas coast, including the Brazos River and its wave-dominated delta, the Oyster Creek meanderbelt, Follets Island, the San Luis Pass tidal delta, and Galveston Island. The trip will emphasize the physical processes associated with shaping these various depositional environments, and will discuss the stratigraphic occurrence of sand bodies associated with these coastal systems. There will be a focus on linking physical processes to the geological record, and also describing the sequence stratigraphic framework of the upper Texas coastal systems.

Bogota Colombia 17 May, 2017 18 May, 2017 37292 Desktop /Portals/0/PackFlashItemImages/WebReady/ws-optimizing-geoscience-and-engineering-to-explore-and-produce-in-a-low-price-environment-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Business and Economics, Economics, Reserve Estimation, Resource Estimates, Risk Analysis, Development and Operations, Engineering, Conventional Drilling, Coring, Directional Drilling, Production, Secondary Recovery, Tertiary Recovery, Reservoir Characterization, Geochemistry and Basin Modeling, Petroleum Systems, Geophysics, Seismic, Clastics, Sedimentology and Stratigraphy, Conventional Sandstones, Diagenetic Traps, Fractured Carbonate Reservoirs
 
Bogota, Colombia
17-18 May 2017

Optimizing Geoscience and Engineering to Explore and Produce in a Low-Price Environment, a Geosciences Technology workshop hosted by the American Association of Petroleum Geologists (AAPG) and the Colombian Association of Petroleum Geologists and Geophysicists (ACGGP)

Kampala Uganda 29 May, 2017 31 May, 2017 33266 Desktop /Portals/0/PackFlashItemImages/WebReady/sc-ar-sequence-stratigraphy-uganda-hero-1.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Sedimentology and Stratigraphy, Business and Economics, Engineering, Clastics, Carbonates, Reserve Estimation, Reservoir Characterization, Production, Bitumen/Heavy Oil, Coalbed Methane, Stratigraphic Traps, Subsalt Traps
 
Kampala, Uganda
29-31 May 2017

The paradigm of sequence stratigraphy has entered a new phase and these once revolutionary concepts are now applied in pre-drill exploration at ever-increasing resolution. The concepts also prove useful in production geology, especially in enhanced oil recovery efforts in previously abandoned fields.

Online Training
07 November, 2013 07 November, 2013 1500 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-from-qualitative-to-quantitative-interpretations.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
7 November 2013

This e-symposium presentation places the interpretation of deep-water turbidites discernible in 3-D seismic inversion data within a geological context.

24 October, 2013 24 October, 2013 1499 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-geomechanical-data-from-petrophysical-logs.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
24 October 2013

This e-symposium will be introducing signal processing techniques as a means to maximize extracting geomechanical data from petrophysical logs.

01 January, 2013 01 January, 9999 1459 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-cc-giant-oil-and-gas-fields.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
1 January 2013 - 1 January 9999

There are more approximately 1,000 oil and gas fields in the world that have been classified as "giant," containing more than 500 million barrels of recoverable oil and /or 3 trillion cubic feet of gas.

08 December, 2011 08 December, 2011 1480 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-connectivity-in-fluvial-systems.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
8 December 2011

This e-symposium focuses on methods for predicting connectivity within clastic fluvial systems.

13 December, 2012 13 December, 2012 1494 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-petrophysics-of-shales.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
13 December 2012

The course will review core data, petrophysical comparisons, rock physics modeling (including pseudo logs and mechanical properties).

28 April, 2011 28 April, 2011 1471 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-niobrara-petroleum-system-a-major-tight-resource-play.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
28 April 2011

The Niobrara Petroleum System of the U.S. Rocky Mountain Region is a major tight petroleum resource play.

17 February, 2011 17 February, 2011 1469 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-siliclastic-sequence-stratigraphy.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
17 February 2011

This presentation is designed for exploration/production geologists and geological managers or reservoir engineers.

11 November, 2010 11 November, 2010 1465 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-geochemical-evaluation-of-eagle-ford-group-source.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
11 November 2010

This e-symposium is ideal for geologists, geophysicists, engineers and other geoscientists who are involved in gas shale exploration and production.

29 April, 2010 29 April, 2010 1457 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-seismic-stratigraphy-seismic-geomorphology-of-deep-water.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
29 April 2010

This presentation will focus on the seismic stratigraphic and seismic geomorphologic expression of deep-water deposits, including both reservoir and non-reservoir facies.

22 October, 2009 22 October, 2009 1452 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-fluvial-stratigraphy.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
22 October 2009

This course can help you gain the ability to describe the complex and highly variable reservoirs, which are typified by complex internal heterogeneity.

14 February, 3000 14 February, 3000 7817 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-generic-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
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Request a visit from Timothy S. Collett!

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