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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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The eastern Mediterranean Sea could become the hottest offshore play in the Middle East area, depending on the outcome of a key exploration attempt later this year.

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 Petroleum Geochemistry Toolkit for Petroleum Exploration and Development 2-day course, is designed to provide the geologist, geophysicist, and engineer with a general understanding of applied petroleum geochemistry and how it can be used in petroleum exploration and development. The petroleum systems analysis examines geological elements and processes that are essential for the petroleum accumulation.

American Association of Petroleum Geologists (AAPG)
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Come for the GTW "Making Money with Mature Fields", and stay for a short course; either "The Petroleum Geochemistry Toolkit for Petroleum Exploration and Development" or "Carbonate Depositional Systems".  All three will explore new and innovative technologies and ideas to lend increased business opportunities now and into the future.

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 06 April, 2017 07 April, 2017 35077 Desktop /Portals/0/PackFlashItemImages/WebReady/ace-sc-21-rock-seismic-sequence-expression-of-carbonate-systems-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Conventions, Short Courses, Post-Convention, Geophysics, Seismic, Sedimentology and Stratigraphy, Carbonates, Sequence Stratigraphy
 
Houston, Texas, United States
6-7 April 2017

In Conjunction with AAPG 2017 Annual Convention & Exhibition (ACE)
This two-day workshop provides an introduction to the application of carbonate facies, diagenesis, and seismic sequence stratigraphy to exploration and production. This includes marine, and conventional and unconventional carbonate reservoirs.

Oklahoma City Oklahoma United States 11 May, 2017 11 May, 2017 37633 Desktop /Portals/0/PackFlashItemImages/WebReady/mid-continent-playmakers-forum-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true Shale Gas, Carbonates, Sedimentology and Stratigraphy, Dolostones, Production, Engineering, Hydraulic Fracturing, Business and Economics
 
Oklahoma City, Oklahoma, United States
11 May 2017

The AAPG Division of Professional Affairs is providing new opportunities for professional development and networking through our new Playmakers forums. The primary purpose of these forums is to bring leaders from industry to present their ideas, successes and even failures in developing new plays. A secondary purpose is to provide training for professionals in prospect generation and presentations. The key to the success of Playmaker’s is most of the speakers are predominantly invited, technical experts on active plays

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
19 March, 2015 19 March, 2015 16283 Desktop /Portals/0/PackFlashItemImages/WebReady/New-Insights-into-the-Stratigraphic-Framework-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
19 March 2015

A detailed biostratigraphic analysis and stratigraphic framework of the Paleocene and Eocene Chicontepec Formation in the Tampico-Misantla basin, onshore eastern Mexico, was conducted using 33 wells.

21 February, 2013 21 February, 2013 1495 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-petrophysics-of-carbonates.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
21 February 2013

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

10 November, 2011 10 November, 2011 1481 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-heterogeneity-in-carbonate-reservoirs.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
10 November 2011

This work investigates how heterogeneity can be defined and how we can quantify this term by describing a range of statistical heterogeneity (e.g. coefficient of variation and the Lorenz coefficient).

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.

30 August, 2012 30 August, 2012 1489 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-mississippian-carbonates-in-kansas.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
30 August 2012

The entire Middle Pennsylvanian–to–top Precambrian basement (500 m) interval was cored in early 2011 in the BEREXCO Wellington KGS #1-32 well in Wellington Field, Sumner County, KS.

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.

07 June, 2012 07 June, 2012 1488 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-new-production-in-oil-fields.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
7 June 2012

Unger Field, discovered in1955, has produced 8.6 million barrels of oil from a thinly (several ft) bedded, locally cherty dolomite containing vuggy and intercrystalline porosity.

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.

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.

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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