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Geomechanics and Fracture Analysis

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3704
 
We do not dispute that the pores shown in the photomicrograph of figure 8G of Beavington-Penney et al. (2008; reproduced here as Figure 1) could have formed at least partly by poststylolite dissolution, but we do not agree that this photomicrograph constitutes evidence for porosity creation by mesogenetic dissolution in the El Garia Formation of offshore Tunisia. Our skepticism is based on two main considerations: (1) that the multiple possible origins of the pores shown in Figure 1 cannot be determined with any meaningful degree of objective certainty and (2) that Figure 1 appears to be unrepresentative of pore types in the El Garia Formation, based on comparison with numerous other published images from this unit.
3564
 
Volumetric restoration can provide crucial insights into the structural evolution of three-dimensional (3-D) petroleum systems. A major limitation to its widespread application is the need to include complex architectures and realistic mechanics such as flexural slip. We apply an implicit approach that allows for, including unconformities, thin and/or pinched-out layers in the models but that cannot explicitly localize slip along horizons. To take advantage of this approach while accounting for flexural slip in 3-D restoration, we investigate new geomechanical properties. We consider flexural slip folding as a result of stacked rigid and thin weak layers, which can be modeled using transversely isotropic properties. We compare restorations of an anticline using transversely isotropic properties, isotropic properties, and a stack of rigid isotropic layers with nonfrictional slip between the layers. Our results show that transversely isotropic properties reasonably approximate flexural slip folding. We use these new tools to model the evolution of a complex system located in the Niger Delta toe. The system includes a detachment fold, a fault-bend fold, and a structural wedge formed in series. Growth stratigraphy and erosional surfaces delimit the kinematics of deformation. Regional erosive surfaces, 3-D gradients of fault slip, and vertical variations in mechanical strength motivated the use of our new restoration techniques. Restoring two growth units results not only in reinforcing the interpretation that the area is behaving as a deforming thrust sheet at critical taper, but also in highlighting coeval activity on both the hinterland structures and the toe of the thrust belt.
2216
 

One of the AAPG Executive Committee’s priorities during the first five months of this fiscal year has been to study the Association’s science program with the goal of creating new conduits for generating and disseminating scientific content.

2103
 
Explorer Emphasis Article

Taking a closer look at the fracture networks in reservoirs has become a reality through tomography, a new seismic sector of the industry.

2100
 

Added to the "first-time-ever” list was the announcing of paper and poster awards at the end of the event.

2050
 

In an effort to continue serving the geosciences community in the Middle East, AAPG Middle East Region will be offering a number of Geosciences Technology Workshops (GTWs) where the attendees, practitioners and scientists will have an opportunity to discuss real cases, issues and experiences.

2032
 
Explorer Emphasis Article

Closest of trends: Geoscientists experienced a huge “aha!” moment that started with the realization that Pennsylvania’s Marcellus Shale and Texas’ Eagle Ford Shale have a lot in common.

1985
 
Explorer Emphasis Article

Try, try again: Test wells and seismic data have helped lead the way to success in theSan Juan Basin’s Mancos Shale formation.

1957
 

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.

1948
 

A new report from the U.K., headed by a petroleum geologist who's familiar to AAPG audiences, recommends caution and some restrictions for use of hydraulic fracturing in new areas.

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In-Person Training
Midland Texas United States 14 January, 2015 14 January, 2015 13531
 
Midland, Texas, United States
14 January 2015

The Midland Playmaker Forum is focused on new and emerging plays of interest to sections or regions, with a broad global appeal to explorers in all locations. Its emphasis is the process of turning a prospect into a discovery and therefore complements the existing prospect expos.

Oklahoma City Oklahoma United States 19 February, 2015 19 February, 2015 11378
 
Oklahoma City, Oklahoma, United States
19 February 2015

This year’s Mississippian Lime Forum unleashes science, technology, and experience to solve persistent puzzles, and dramatically improve economics. Consider 2015 a breakthrough year as new, sometimes controversial new techniques and technologies are being implemented for the first time.

Houston Texas United States 05 March, 2015 06 March, 2015 1347
 
Houston, Texas, United States
5-6 March 2015

Much of today’s resource play drilling activity focuses on evaluating properties and holding acreage. As resource plays mature, we will want to identify bypassed pay and evaluate the benefits of restimulation. Even with access to such modern data, geology, and hence seismic data and seismic attributes are only one of the components necessary to predict EUR.

London United Kingdom 09 March, 2015 10 March, 2015 13537
 
London, United Kingdom
9-10 March 2015

The London Playmaker Forum is focused on new and emerging plays of interest to sections or regions, with a broad global appeal to explorers in all locations. Its emphasis is the process of turning a prospect into a discovery and therefore complements the existing prospect expos.

Watkins Glen New York United States 15 June, 2015 19 June, 2015 147
 
Watkins Glen, New York, United States
15-19 June 2015

The attendee will gain a working knowledge concerning how faults and fractures develop and their terminology, methodologies utilized in collecting and analyzing fracture data, characteristics of faults and fractures that affect the sedimentary units (including black shales) in the northern Appalachian Basin of New York state, and tectonics that led to the formation of the structures in the northern Appalachian Basin and the adjacent Appalachian Orogen.

Great Falls Montana United States 13 July, 2015 18 July, 2015 150
 
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.

Casper Wyoming United States 24 August, 2015 28 August, 2015 1513
 
Casper, Wyoming, United States
24-28 August 2015

Take advantage of this unique opportunity to learn all the aspects related to the understanding and modeling of fractured reservoirs. Attendees will take geologic concepts and use them in reservoir modeling through hands-on sessions devoted to the examination of outcrop, core and log data. They will use that information and a software to create 3D fractured reservoir models. Using actual Teapot Dome (Wyoming, USA) field data from the Tensleep and Niobrara Shale formations and a hands-on approach, the workshop allows the geoscientist to identify fractures and to construct predictive 3D fracture models that can be used to identify productive zones, plan wells and to create fracture porosity and permeability models for reservoir simulation.

14 February, 3000 14 February, 3000 7816
 
14 February, 3000 14 February, 3000 7815
 
14 February, 3000 14 February, 3000 7812
 
Online Training
30 October, 2014 30 October, 2014 11390
 
30 October 2014

Cross disciplinary workflows play an important part of successful characterization of shale reservoirs. This course discusses how the artificial kerogen maturity of organic-rich Green River shale affects the petrophysical, micro-structural, geochemical and elastic properties.

07 June, 2012 07 June, 2012 1488
 
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.

15 March, 2012 15 March, 2012 1484
 
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.

12 July, 2012 12 July, 2012 1490
 
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
 
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.

29 September, 2011 29 September, 2011 1478
 
29 September 2011

This study will focus in the combination of λρ – μρ inversion with clustering analysis techniques in order to discriminate brittle zones in the Barnett Shale.

09 February, 2012 09 February, 2012 1477
 
9 February 2012

Projects in several shales will be discussed, including Marcellus, Eagle Ford, Haynesville, Fayetteville, Montney, and Barnett, as will several seismically-detectable drivers for success including lithofacies, stress, pre-existing fractures, and pore pressure.

16 February, 2012 16 February, 2012 1483
 
16 February 2012

This presentation describes a proven workflow that uses a standard narrow azimuth 3D seismic, conventional logs, image logs and core data to build five key reservoir properties required for an optimal development of shale plays.

10 May, 2012 10 May, 2012 1486
 
10 May 2012

Recognition and Correlation of the Eagle Ford, Austin Formations in South Texas can be enhanced with High Resolution Biostratigraphy, fossil abundance peaks and Maximum Flooding Surfaces correlated to Upper Cretaceous sequence stratigraphic cycle chart after Gradstein, 2010.

04 October, 2012 04 October, 2012 1491
 
4 October 2012

Effective hydraulic fracture stimulation is critical for shale development, and microseismic is the only technology able to map the growth of these hydraulic fracture networks.

25 August, 2011 25 August, 2011 1475
 
25 August 2011

This e-symposium provides highlights of the hydraulic fracturing mechanics, analysis, and design, and is derived from a two and one-half (2-1/2) day course which is designed for drilling, completion, production engineers, engineering technicians, geologists, well-site and completion supervisors, and managers, who desire to possess a comprehensive and integral knowledge of Hydraulic Fracturing.

17 March, 2011 17 March, 2011 1470
 
17 March 2011

This e-symposium will provide information on which tools, processes, and procedures all geoscientists, engineers, and technical professionals working in shale plays need to understand and implement.

09 December, 2010 09 December, 2010 1466
 
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
 
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
 
22 July 2010

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

03 June, 2010 03 June, 2010 1460
 
3 June 2010

Upon successful completion of this course, you will be able to describe faults and fractures in carbonates, black shales, and coarser clastics as they occur in the northern Appalachian Basin.

25 March, 2010 25 March, 2010 1458
 
25 March 2010

The presentation describes a well established fracture modeling workflow that uses a standard 3D seismic, conventional logs, image logs and data from one core to build predictive 3D fracture models that are validated with blind wells.

25 January, 2011 25 January, 2011 1454
 
25 January 2011

This esymposium takes a close look at workflows associated with resource plays, and analyzes where integration must occur between disciplines, data, and workflows at all phases of the process.

14 February, 3000 14 February, 3000 7817
 
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