bplist00_WebMainResource ^WebResourceURL_WebResourceTextEncodingName_WebResourceMIMEType_WebResourceData_file:///index.htmlUUTF-8Ytext/htmlO_ GeoShurr: Activity Report











ABOUT GEOSHURR

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Activity Report 

This site has been under construction.

Activity Report

April 2007 - September 2008


(email change)

our new email is

geoshurr@rockrapids.net

It’s been more than a year since we’ve posted an activity report.  The problem is not too little activity, but too much.  We’ve been busy with a lot of things as described below.  We have also delayed adding to this website because it is slated for a change in format.  Those modifications haven’t happened yet.  However, here’s what GeoShurr has been doing over the past eighteen months.


Professional Meetings


At the American Association of Petroleum Geologists (AAPG) Annual Meeting in April 2007, GeoShurr along with two co-authors from the South Dakota Geological Survey, received the best poster award.  The actual poster was presented a year earlier and is titled “Exploration Strategies for Ultra-Shallow Microbial Methane on the Eastern Margin of the Williston Basin”.  The abstract is available in the “Publications” section of this website.


Although I didn’t attend the 2007 AAPG meeting to receive the award and “accolades” in person, I did make it to several other professional meetings.  Those included were the Geological Society of America (GSA) Meeting in Denver, CO, in October 2007, and the 43rd Annual Shallow Exploration Drillers Clinic in Sioux Falls, SD, in April 2008.


The 2008 AAPG Annual Meeting was in San Antonio in April.  GeoShurr co-chaired a technical session called “Biogenic Gas Systems Worldwide”.  There were ten papers and we averaged about 70 people for each presentation.  My talk was on “Contrasting Biogenic Gas Systems in the Eastern Great Plains of North America”; this abstract is also in the “Publications” section.


The 2009 AAPG Annual Meeting is in Denver next June and it includes a technical session entitled “Landfills and Digesters--Lessons for Shallow Biogenic Gas Production”.  In addition to the production aspects of landfills and the biotech aspects of digesters, we’re looking for descriptions of natural biogenic methane accumulations such as the Antrim Shale on the northern margin of the Michigan Basin and the CBM production in the Powder River Basin.  Abstracts are due November 4 and can be submitted online at www.aapg.org/denver.


Publications


World Oil has published two papers co-authored by GeoShurr.  The August 2007 article is titled “‘Farming’ Late Generation Natural Gas Shows Potential”.  The November 2007 article is “Making Microbial Methane Work--the Potential for New Biogenic Gas”.  Both of these papers discuss a domestic energy source that could be significant:  in-situ microbial methane generation.  That idea extends way beyond the “hunting and gathering” model of traditional gas exploration and production


During the spring of 2008 GeoShurr worked with Chinese geologists to describe an ultra-shallow biogenic gas accumulation on the east coast of China.  We’re not certain where it will be published, but the paper is titled  “Features and Sealing Mechanism of Shallow Biogenic Gas in Incised Valley Fills (the Qiantang River, eastern China): a Case Study”.


In September 2008 the Rocky Mountain Association of Geologists (RMAG) finally published their “Gas Shale in the Rocky Mountains and Beyond”.  It is in a CD formal and includes a GeoShurr paper, “Shallow Biogenic Gas in Cretaceous Shales on the Eastern Margin of the Williston Basin”.  The CD has been literally years in the making.


The abstracts for all four of these papers are posted in the “Publications” section of this GeoShurr website.  Eventually, we hope to modify the website to facilitate a direct download of the total text for each paper.


Websites and Networking


The GeoShurr website is visited by 75 to 100 people every week.  We do have plans to substantially modify it with a simplified format and updated content.  But, we haven’t gotten that job done.  We’ve been too busy with billable hours work and professional activities.


There is an informal email network of people interested in shallow gas.  It’s been going for two or three years and currently has almost 100 members.  About the only on-going activity is an “occasional newsletter, though small groups have met informally during professional meetings.  Please contact me if you want to be included in this network.


A website at www.shallowgas.wordpress.com provides a new venue for the occasional newsletter.  There have been discussions about evolving into a blog devoted to shallow gas and also about a possible two-day workshop on shallow gas.


Exploration Activities


GeoShurr exploration activities have focused on work in the Eastern Great Plains, especially the eastern Dakotas.  We’ve also been watching shallow gas development in central and northwestern South Dakota and on the eastern margin of the Alberta Basin in Saskatchewan and Alberta.


In eastern South Dakota, one GeoShurr prospect had six tests drilled.  Although all were plugged and abandoned, they all had shows and several shows were significant.  The objective was to demonstrate that the gas was present and to gather data needed to design an effective completion program.  These “science holes” were less than 1000 ft deep, so the subsequent production tests will be cheap to drill.  Ultra-shallow gas projects obviously run on a different economic tract than traditional gas and oil exploration.


Another project involved a preliminary look at shallow gas potentials in several counties in eastern South Dakota.  The assessment was based mainly on antidotal gas shows and water chemistry.  It remains to be seen if that company will follow up.


A major exploration effort over this reporting period has utilized a small, portable gas detector.  It measures methane concentrations in the casing above water levels in established observation wells.  This is a continuation and expansion of initial work described in the World Oil articles.


 The state of North Dakota has funded a small grant to apply this technology in the eastern part of the state.  This builds on work already completed by the ND Geological Survey and involves two of us from the private sector, as well as Survey staff.  One of the main preliminary conclusions of this work is that the methane concentrations fluctuate over periods of days, months, and years.  This project is still in progress.


Following up on the North Dakota results, work expanded in eastern South Dakota.  Time variations have been documented in observation wells initially “sniffed” several years ago.  In addition, bedrock aquifers in two new counties have shown significant methane concentrations.  These findings have led to a water sampling program carried out in conjunction with staff from the SD Geological Survey and the SD School of Mines and Technology.  Water samples collected from “hot” and “null” observation wells have been sent to labs for analyses of headspace gas water composition, and biotech experiments.


George Shurr

September 22, 2008





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