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Organic-carbon–rich shales of the lower Marcellus Formation were deposited at the toe and basinward of a prograding clinothem associated with a Mahantango Formation delta complex centered near Harrisburg, Pennsylvania. Distribution of these organic-carbon–rich shales was influenced by shifts in the delta complex driven by changes in rates of accommodation creation and by a topographically high carbonate bank that formed along the Findlay-Algonquin arch during deposition of the Onondaga Formation. Specifically, we interpret the Union Springs member (Shamokin Member of the Marcellus Formation) and the Onondaga Formation as comprising a single third-order depositional sequence. The Onondaga Formation was deposited in the lowstand to transgressive systems tract, and the Union Springs member was deposited in the transgressive, highstand, and falling-stage systems tract. The regional extent of parasequences, systems tracts, and the interpreted depositional sequence suggest that base-level fluctuations were primarily caused by allogenic forcing—eustasy, climate, or regional thermal uplift or subsidence—instead of basement fault reactivation as argued by previous workers. Paleowater depths in the region of Marcellus Formation black mudrock accumulation were at least 330 ft (100 m) as estimated by differences in strata thickness between the northwestern carbonate bank and basinal facies to the southeast. Geochemical analysis indicates anoxic to euxinic bottom-water conditions. These conditions were supported by a deep, stratified basin with a lack of circulation.
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Sandstone pressures follow the hydrostatic gradient in Miocene strata of the Mad Dog field, deep-water Gulf of Mexico, whereas pore pressures in the adjacent mudstones track a trend from well to well that can be approximated by the total vertical stress gradient. The sandstone pressures within these strata are everywhere less than the bounding mudstone pore pressures, and the difference between them is proportional to the total vertical stress. The mudstone pressure is predicted from its porosity with an exponential porosity-versus-vertical effective stress relationship, where porosity is interpreted from wireline velocity. Sonic velocities in mudstones bounding the regional sandstones fall within a narrow range throughout the field from which we interpret their vertical effective stresses can be approximated as constant. We show how to predict sandstone and mudstone pore pressure in any offset well at Mad Dog given knowledge of the local total vertical stress. At Mad Dog, the approach is complicated by the extraordinary lateral changes in total vertical stress that are caused by changing bathymetry and the presence or absence of salt. A similar approach can be used in other subsalt fields. We suggest that pore pressures within mudstones can be systematically different from those of the nearby sandstones, and that this difference can be predicted. Well programs must ensure that the borehole pressure is not too low, which results in borehole closure in the mudstone intervals, and not too high, which can result in lost circulation to the reservoir intervals.

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The presence of natural gas in Kansas was known in pre-territorial time, as it was escaping from “oil springs” in Miami County in the region’s northeast part – there is some evidence that it was collected and used by local American Indians before any easterners settled in what would become the Sunflower State.

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Quartet made its debut in the industry this year. The reviews are in and it looks like the value brought to the field is proving it to be innovative and time-saving.

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The high-cost of drilling environments has been addressed by a new technology using wireless telemetry to feed real-time data back to the surface. Here's one review.

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Geosteering takes advantage of subsurface data being interpreted in real time in order to enable steering decisions during the process. The object if identifying target versus non-target stratigraphic horizons. Learn more about advancements made in this area.

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It’s now been shown that the “sweet” aspect of an identified sweet spot can change – not only stratigraphically, but also laterally within the zone itself.

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The ability to see ahead of the drillbit while drilling, in real time, helps the driller avoid hazards, increase drilling efficiency and improve well results. Successful SWD captures seismic data without interrupting drilling operations, saving money and reducing risk.

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Edinburgh, Scotland, has a new research center planning to open its doors in 2015. It is the Sir Charles Lyell Centre, named after Britain's 19th century geologist. The uptick of interest in emerging industries of shale oil and gas and deep sea metal mining is just one of the areas of the focus planned for the centre.

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The Marcellus Shale is considered to be the largest unconventional shale-gas resource in the United States. Two critical factors for unconventional shale reservoirs are the response of a unit to hydraulic fracture stimulation and gas content. The fracture attributes reflect the geomechanical properties of the rocks, which are partly related to rock mineralogy. The natural gas content of a shale reservoir rock is strongly linked to organic matter content, measured by total organic carbon (TOC). A mudstone lithofacies is a vertically and laterally continuous zone with similar mineral composition, rock geomechanical properties, and TOC content. Core, log, and seismic data were used to build a three-dimensional (3-D) mudrock lithofacies model from core to wells and, finally, to regional scale. An artificial neural network was used for lithofacies prediction. Eight petrophysical parameters derived from conventional logs were determined as critical inputs. Advanced logs, such as pulsed neutron spectroscopy, with log-determined mineral composition and TOC data were used to improve and confirm the quantitative relationship between conventional logs and lithofacies. Sequential indicator simulation performed well for 3-D modeling of Marcellus Shale lithofacies. The interplay of dilution by terrigenous detritus, organic matter productivity, and organic matter preservation and decomposition affected the distribution of Marcellus Shale lithofacies distribution, which may be attributed to water depth and the distance to shoreline. The trend of normalized average gas production rate from horizontal wells supported our approach to modeling Marcellus Shale lithofacies. The proposed 3-D modeling approach may be helpful for optimizing the design of horizontal well trajectories and hydraulic fracture stimulation strategies.

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In-Person Training
Buenos Aires Argentina 11 May, 2015 12 May, 2015 14137 Desktop /Portals/0/PackFlashItemImages/WebReady/extending-mature-fields-life-cycles-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
Buenos Aires, Argentina
11-12 May 2015

Join leading scientists and industry practitioners at Extending Mature Fields’ Life Cycles: the Role of New Technologies & Integrated Strategies, a Geoscience Technology Workshop (GTW) organized by the AAPG Latin America Region and the Asociación Argentina de Geólogos y Geofísicos Petroleros (AAGGP).

Denver Colorado United States 30 May, 2015 31 May, 2015 14526 Desktop /Portals/0/PackFlashItemImages/WebReady/ace2015-ft-05-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
Denver, Colorado, United States
30-31 May 2015

This two-day field trip will review the geologic history in context with the past and present petroleum exploration in the North Park-Middle Park Basin (or Colorado Headwaters Basin, CHB) in Northcentral Colorado.

Denver Colorado United States 30 May, 2015 30 May, 2015 14549 Desktop /Portals/0/PackFlashItemImages/WebReady/ace2015-sc03-petroleum- economics-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
Denver, Colorado, United States
30 May 2015

This course provides an overview of the petroleum industry and upstream economics, beginning with the geoscientist’s role of evaluating uncertainty in E&P, estimating prospect resources, and estimating chances of success. The course then moves on to field development scenarios and cash flow models, developing various capital budgeting economic indices to evaluate and rank various prospective field projects, production and reservoir management for producing fields and international contract arrangements and emerging trends.

 

Denver Colorado United States 31 May, 2015 31 May, 2015 14596 Desktop /Portals/0/PackFlashItemImages/WebReady/ace2015-sc12-three-ps-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
Denver, Colorado, United States
31 May 2015
This course is designed to introduce participants to geosteering principals, interpretation practices, and lead to the ability to recognize potential pitfalls.
Denver Colorado United States 04 June, 2015 04 June, 2015 14702 Desktop /Portals/0/PackFlashItemImages/WebReady/ace2015-ft-11-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
Denver, Colorado, United States
4 June 2015
This trip will focus on defining the Niobrara formation from the outcrop scale to the well bore, and discuss the key parameters that have made this play work, both from a geologic and a reservoir standpoint. Furthermore, we will describe how Noble Energy has helped to lead the industry in Northern Colorado to safely, responsibly and efficiently develop this huge resource. We will visit both Niobrara outcrops and Noble Energy production facilities to illustrate our current subsurface understanding and best practices.
Denver Colorado United States 04 June, 2015 04 June, 2015 14631 Desktop /Portals/0/PackFlashItemImages/WebReady/ace2015-sc16-frac-engineer-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
Denver, Colorado, United States
4 June 2015
This course will focus on practical techniques to investigate and optimize fracture treatments. Participants in this course will have access to more than 200 published field studies in which the productivity and profitability of fields have been improved by altering the treatment design.
Great Falls Montana United States 13 July, 2015 18 July, 2015 150 Desktop /Portals/0/PackFlashItemImages/WebReady/fs-Fractures-Folds-and-Faults-in-Thrusted-Terrains.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
Great Falls, Montana, United States
13-18 July 2015
The seminar will utilize traverses to examine multiple thrust sheets exposed in Sun River Canyon, the famous Teton Anticline, and an outstanding example of an exposed fractured reservoir along a fault‐propagated fold in Mississippian carbonates as Swift Reservoir. Participants will examine the mechanics of fracturing, folding, and faulting in thrust belt terrains, identify and discuss new ideas regarding the geometry and kinematics of the development of thrust belts, compare seismic interpretation with outcrop examples, and analyze stratigraphic concepts which are essential in the exploration of thrust belt targets.
San Antonio Texas United States 18 July, 2015 18 July, 2015 14514 Desktop /Portals/0/PackFlashItemImages/WebReady/sc-Geomechanics-For-Completion-Optimization-In-Unconventionals-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
San Antonio, Texas, United States
18 July 2015

Geomechanics – in both completions and drilling operations – has become a critical technology in the development of Unconventional Plays. This course presents the basics of oil field geomechanics and its application to unconventional developments; specifically, the role of stress, pore pressure, mechanical properties, and natural fractures on hydraulic fracturing operations.

Abu Dhabi United Arab Emirates 04 October, 2015 06 October, 2015 13097 Desktop /Portals/0/PackFlashItemImages/WebReady/third-eage-aapg-workshop-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
Abu Dhabi, United Arab Emirates
4-6 October 2015

This workshop is the outgrowth of continued cooperation between AAPG & EAGE to develop a series of multi-disciplined gatherings dedicated to understanding, completing & producing tight sandstone & carbonate reservoirs.

Online Training
02 October, 2014 02 October, 2014 10593 Desktop /Portals/0/PackFlashItemImages/WebReady/esymp-concepts-of-scale-horizontal-development-of-wolfcamp-shale-oil-of-the-southern-midland-basin-hero.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
2 October 2014
This course is ideal for individuals involved in Midland Basin exploration and development. Successful development of Wolfcamp shale oil relies on complex inter-relationships (ultimately interdependencies) within and between a wide variety of scientific disciplines, financial entities, and company partnerships. 
15 March, 2012 15 March, 2012 1484 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-exploring-the-geopressure-risk-in-deep-water-frontier-plays.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
15 March 2012

This e-symposium presents techniques for predicting pore pressure in seals by examining case studies from the Gulf of Mexico and incorporating the relationship between rocks, fluids, stress, and pressure.

26 September, 2013 26 September, 2013 1497 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-overpressure-in-shale-gas.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
26 September 2013

The presentation will discuss key reservoir information and how to develop a predictive pressure model.

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.

16 April, 2013 16 April, 2013 1496 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-successful-oilfield-water-management.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
16 April 2013

The goal of this e-symposium is to provide an overview of the latest trends and technologies for water management for oil and gas drilling, completions, and production.

12 July, 2012 12 July, 2012 1490 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-shale-wells-making-the-engineering-fit-what-geology-offers.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
12 July 2012

This presentation will look at well placement vertically in the pay, well azimuth and well trajectory with explanations of how geology and post-depositional effects can make the difference between a successful well and a failure.

20 January, 2012 20 January, 2012 1482 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-eagle-ford-shale-prospecting-with-3d-seismic-data.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
20 January 2012

The Eagle Ford Shale in South Texas is one of the more exciting shale plays in the United States at the current time.

28 July, 2011 28 July, 2011 1476 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-marcellus-shale-integrating-information-to-optimize.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
28 July 2011

This presentation discusses one operator’s approach to fully integrate data captured in the Marcellus Shale in order to optimize horizontal well performance.

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.

09 December, 2010 09 December, 2010 1466 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-bakken-petroleum-system-of-the-williston-basin.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
9 December 2010

The Mississippian-Devonian Bakken Petroleum System of the Williston Basin is characterized by low-porosity and permeability reservoirs, organic-rich source rocks, and regional hydrocarbon charge.

21 October, 2010 21 October, 2010 1464 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-evaluating-mature-fields.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
21 October 2010

This e-symposium covers how to conduct an interdisciplinary evaluation of mature fields to determine the best approach to recover remaining reserves.

22 July, 2010 22 July, 2010 1461 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-all-shale-gas-reservoirs-are-not-the-same.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
22 July 2010

Upon successful completion of this course, you will be able to describe geomechanics in shale reservoirs and discuss differences between plays.

28 January, 2010 28 January, 2010 1455 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-complex-well-guidance-for-cg-asset-team-professionals.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
28 January 2010

This 1-hour web-cast will arm the G&G asset team professionals with a core-competency understanding of these critical field realities, with direct reference to recent documented field experience and learnings

27 March, 2009 27 March, 2009 1435 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-es-the-many-faces-of-gis.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
27 March 2009

Join two GIS/geoscience experts Scott Sires and Gerry Bartz as they use information from the Teapot Dome Field in Wyoming (DOE/RMOTC program).

01 January, 2013 01 January, 9999 1473 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-cc-unconventional-resources.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
1 January 2013 - 1 January 9999

Unconventional Resources is an online course that enables participants to learn about shale gas, shale oil and coalbed methane.

01 January, 2013 01 January, 9999 1472 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-cc-introduction-to-shale-gas.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
1 January 2013 - 1 January 9999

This course introduces the learner to the fundamentals of shale gas, including current theories that explain its origin, and how to determine which reservoirs are commercially viable.

01 January, 2013 01 January, 9999 1448 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-cc-solar-energy-basics.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
1 January 2013 - 1 January 9999

Solar Energy Basics is an online course that enables participants to review, analyze, and evaluate opportunities in the rapidly expanding market for solar energy.

01 November, 2013 01 November, 9999 452 Desktop /Portals/0/PackFlashItemImages/WebReady/oc-toc-petroleum-exploration-production.jpg?width=100&height=100&mode=crop&anchor=middlecenter&quality=75amp;encoder=freeimage&progressive=true
 
1 November 2013 - 1 November 9999

This online course provides an overview of the petroleum industry from what is natural gas and crude oil to how to explore, drill, and produce oil and gas.

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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