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The Devonian carbonate platform (Obj-2) of the Kharyaga field (Russia) is operated by Total since 1999 and produces 42° API oil, rich in H2S. A multi-disciplinary (sedimentological, structural, stratigraphic and geomechanical modeling) and multi-scale study was made of the field, integrating seismic, micro-resistivity log (FMI) and core data in order to characterize the reservoir.

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A seismic interpretation study of reflection profiles was undertaken to identify sedimentary and structural components of the tectonic development of the West Greenland continental margin. The new structural framework reveals a long and complex tectono-stratigraphy and evolution.

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Increased rates of seismicity in tectonically quiescent regions like the midcontinent region of the United States have been hypothesized to be related to human activities such as oil and gas production and wastewater injection. It can be difficult to establish how human activities relate to earthquakes, particularly when local seismic networks are not available to provide a high-quality characterization of the seismic sequence in question.

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Pore types, pore size, and pore abundance vary systematically across thermal maturity in the Eagle Ford Formation, Maverick Basin, southern Texas. Scanning electron imaging of twenty samples from four wells is used to assess the complex response of pores to chemical and mechanical processes, entailing both destruction of primary porosity and generation of secondary pores.

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The Paleoproterozoic Barney Creek Formation (BCF; McArthur Basin, Australia) is one of the oldest active hydrocarbon systems on Earth with oil and gas shows present within organic-rich intervals (up to 7 wt% TOC). We combine bulk geochemical analyses, pore space characterization and high-resolution electron imaging techniques to characterize the evolution of the BCF pore system with maturity.

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In Tunisia, most borehole temperatures used to constrain the thermal histories of sedimentary basins were previously corrected using various methods, set to best-fit domains other than the Tunisian basins. This study aimed to propose a new method of borehole temperature correction suitable for the Jeffara Basin, southeastern Tunisia.

 

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The objective of this paper is to frame reservoir quality within the architectural elements of submarine gravity flows in a deepwater Paleogene field.

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New biostratigraphic zonations, core descriptions, sandstone petrography, facies analysis, and seismic information are compared with published detrital and bedrock geo- and thermochronology to build a Cenozoic paleogeographic reconstruction of the Andean retroarc region of Colombia, encompassing the ancestral Central Cordillera, Middle Magdalena Valley, Eastern Cordillera, and Llanos basin.

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In Colombia, palynology has been widely used as a biostratigraphic tool in oil exploration over the last two decades and, as a result of these efforts, an understanding of the chronostratigraphic range of thousands of palynomorph species is now available.

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One of the challenges confronting carbon dioxide capture and sequestration (CCS) in geologic media over extended periods of time is determining the caprock sealing capacity. If the pressure of supercritical carbon dioxide (scCO2) injected in the repository overcomes the caprock sealing capacity, leaking of scCO2 may enter other porous formations, compromising the storage formation, or even may go back to the atmosphere, and thus the process of sequestration becomes futile.

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Recently Added in News
 
The AAPG Foundation’s L. Austin Weeks Undergraduate Grant program annually awards deserving geoscience students and geoscience student organizations across the world with $500 in grant funds.
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Knowledge alone does not make one successful in a corporate setting. There are a couple of simple things a new employee can do to complement their existing knowledge and set them on the path to a successful career.
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Hydraulic fracturing of rock formations has been hotly debated during the past several years, and public opinions have resulted in numerous legislative actions that closely control or even ban the practice in different parts of the nation. Fracturing, however, actually has been used in the oil and gas industry for 67 years and in the granite quarrying business in North Carolina since 1903.
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Congress long has been interested in ending the ban on the export of U.S. crude oil – and their interest in oil exports has increased with the recent international agreement to lift the nuclear-related sanctions on Iran.
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The proposed workflow for generating a low-frequency impedance model is superior to the existing methods of low-frequency impedance generation. The quality of the low-frequency impedance model used in the inversion has a pronounced effect on the final impedance result, and thus a superior low-frequency impedance model when used in the inversion process yields a more accurate impedance inversion output.
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“Don’t you care about the environment?” DEG’s founder and first president – and an AAPG past president and legend – Bruno Hanson directly challenged me with that question.
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In his presidential address at the 2011 Annual Convention and Exhibition in Houston, then-president David Rensink talked about the fact that AAPG is a tribe, a tribe of geoscientists whose common focus is oil and natural gas.
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As I write this article, your Executive Committee is meeting in Tulsa to review the 2015-16 business plan, the current long-range plan and receive an update from Past President Lee Krystinik on the 2014-15 Ad-Hoc Committee on Governance, which is expected to report to the Executive Committee in October.
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“Visualizing Earth Systems” is the theme of this year’s Earth Science Week, which will be held Oct. 11-17.
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The 2015 annual AAPG Eastern Section meeting will be held Sept. 20-22 at the Union Station and Crowne Plaza Hotel complex in downtown Indianapolis.
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Recently Added Special Publications
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This Special Publication presents recent research on the generation and migration of gas in the context of the deep geological disposal of radioactive waste. In particular, it focuses on the mechanisms by which gas migrates through clay based engineering barrier/backfill materials and clay-rich host rocks.
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This volume consists of 27 multidisciplinary papers which include a wide range of geological and geophysical topics, such as geochemistry and petroleum systems, earthquake seismology and tomography, seismic stratigraphy and sedimentology, oil and gas exploration plays, carbonate and siliciclastic petrology, basement studies, regional tectonics and structural geology, fold belt structural analyses, potential methods, and studies on the Magdalena fan.
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This CD reprint of the Special Edition of the October 2008 AAPG Bulletin comprises 11 papers on the subject of managing risk and uncertainty in exploration and asset management.
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This memoir contains 15 well-illustrated, peer-reviewed chapters that describe the history of field development, the deposition and diagenesis of the reservoir rocks, geophysical characteristics of the field, special core analysis techniques used to better quantify the reservoir, petrophysical characteristics and interpretations of the reservoir, the types and abundance of natural fractures, and fluid production characteristics in the field. Finally, static and dynamic models for the field are presented in an attempt to integrate all the pieces of this giant geologic puzzle.
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This volume highlights key challenges for fluid-flow prediction in carbonate reservoirs, the approaches currently employed to address these challenges and developments in fundamental science and technology.
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This publication is quite diverse in terms of topics, approaches, and philosophies, as well as in terms of the geological settings and operational aspects that are addressed. There is a good mix of theory, applications, resources, and practical advice, along with some historical perspectives and a sprinkling of futurism.
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The purpose of this publication is to review many of the current methods and paradigms that have been developed for the computer analysis of petrophysical logs for geological applications.
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Thirteen papers published in the August 2014 Special Issue of the AAPG Bulletin deal with aspects of faulting and fracturing, and the effects of mechanical pressures on shale and other self-sourcing reservoirs.
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Recently Added
 
This zipped file contains geodatabase and xls (Excel) tables used by ExxonMobil in creating and editing geologic GIS feature classes and building attribute tables. AAPG Datapages, Inc. appreciates the efforts by the AAPG GIS Publication committee and ExxonMobil.
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These datasets depict the location and extent of oil and gas fields and pools across Pennsylvania, provide basic reservoir characterization data at the pool level (to the extent possible), and provide representative well-specific data to chronicle the evolution of the petroleum industry from the time of Drake’s well (Titusville, 1859) through the end of calendar year 2011.
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This is a regional study that stretches from Anderson County, Texas in the northeast to Fayette County, Texas in the southwest. The GIS data captures individual formations in the Wilcox Group, plus the Carrizo Sand unit: maximum sand thickness, net sand thickness, lignite thickness, resistivity of maximum sand thickness (to delineate ground water movement) and percent sand
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The data presented in the following files were sourced from the global heat flow database of the International Heat Flow Commission, which is managed by the University of North Dakota, Grand Forks, ND USA.
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Deltaic depositional facies result from interacting dynamics processes (wave energy, tidal regime, currents, climate, etc.), which modify and disperse riverborne (fluvial) clastic deposits.

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Sequence stratigraphy is the study of genetically related facies within a framework of chronostratigraphically significant surfaces. Paleontologic data, integrated with seismic and well log data, are an integral part of sequence stratigraphic analysis.

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Pore type, pore geometry, and fluid properties are critical factors affecting permeability. Sandstone texture directly affects pore type and geometry. Knowing what textures and fluids to expect, as well as what authigenic clays might be present, can help us predict permeability

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Solar energy is the use of direct sunlight, the solar energy arriving on Earth. Direct sunlight can be used for two main purposes: for heating and cooling and for the generation of electricity.

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Seismic facies analysis is the description and interpretation of seismic reflection parameters, such as configuration, continuity, amplitude, and frequency, within the stratigraphic framework of a depositional sequence.

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Hydroelectric power is, as of 2005, the second largest source of electricity in the world (18%) after coal, which supplies about 38%, but ahead of nuclear power, natural gas, and oil, which contribute 17, 16, and 10%, respectively, of the total generated electricity.

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AAPG Visiting Geoscientist Ray Leonard completes visit to the University of the Western Cape in South Africa.

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How many times have you kicked yourself because you made decisions without really having time to get all the expert opinions? When could your team have been better – both in determining where to explore and how to complete a well?
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Wind power generation is growing rapidly. However, new installations have lagged since the initial expiration of the production tax credit in 2012 and the revised expiration in 2014. The EPA Clean Power Plan (CPP) will boost wind energy. Growing wind generation requires more than installing a wind turbine; it also requires building new transmissions lines to move power from rural generating areas to population centers that need the power. Wind energy also requires that system operators have sufficient reserve generating capacity, usually from hydro or natural gas, for use when the wind is not blowing—luckily, natural gas generation has grown 27 percent in the past six years.  

 

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University of the West Indies – St. Augustine Student Chapter leaders report on a wellsite visit led by Xavier Moonan, Centrica Energy Senior Geologist who currently serves as the  AAPG Latin America & Caribbean Region Treasurer and Immediate Past President of the Geological Society of Trinidad & Tobago. 
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Prior to the August recess, the House Natural Resources Committee held a hearing to discuss the status of applications for geological and geophysical (G&G) permits to perform updated seismic surveys in the Atlantic.  The purpose of the hearing was to put pressure on the Department of Interior’s Bureau of Ocean Energy Management (BOEM) to move the process forward in order to provide critical information for its 2017-2022 outer continental shelf (OCS) plan.
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Alexandria, Va. - The American Geosciences Institute (AGI) is now accepting advance orders for the Earth Science Week 2015 Toolkit. The Toolkit contains educational materials for all ages that correspond to this year's event theme, "Visualizing Earth Systems."
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I’m never doing that again! I learned my lesson!  But, then, here I am, doing the same thing – why is that? Did I not learn from experience?  

That’s what I told myself as I prepared to buy properties I planned to improve and convert into highly profitable revenue generators that would provide income for years to come. The last time I did this, I got burned.  After I did that, I decided that zero percent interest was better than seeing my capital hemorrhage away.  

Actually, it’s not so simple. Experience is often not the teacher we think it is. Further, the fact that I’m doing it again, despite my painful experience, may be an indication that I’ve developed a better approach.   

Further, my decision to try again simply demonstrates that sometimes the lessons we think we learned are not what they seem to be, and also that we should not shy away from certain fields of endeavor just because of an isolated experience.

 



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The field trip, led by AAPG Delegate Germán Bayona, helped 16 students learn about depositional environments and their role in hydrocarbon exploration. 

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Congress established a Federal Helium Reserve in 1925 to assure supplies of the non-explosive gas for use in military blimps and dirigibles. In 1996, faced with an expensive and unnecessary facility, Congress passed the Helium Privatization Act to sell down the gas supply and close the facility. That legislation lead to over consumption and a lack of commercial interest in helium production that the Helium Stewardship Act of 2013 was intended to correct so that the reserve could be closed. Now Congress is investigating whether additional legislation is needed to assure fair competition in the sale and refining of helium.

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