Garrett County and Natural Gas - Risks and Benefits

A selection of categorized links to allow one to assess the risks and benefits of gas development in Garrett Conty.

Garrett County Montage

Casing Integrity

Links that describe integrity issues such associated with casing failures and cement failures.

- 1619 - [June 5, 2014] - Geofirma Engineering, Ltd, NA - "Research – Wellbore Integrity and Leakage"
"Wells that slowly seep gas upwards outside the casing because of inadequate primary cementation, and because there is a source of gas (generally a thin, undepleted and non-commercial gassy formation at intermediate depth), are commonplace. Slow seepage can develop many years after a successful well abandonment procedure. The seepage gas is usually close to 100% – methane...."
- 1772 - [NA] - WellIntergity.net, WellIntergity.net - "Well Integrity Resources"
"resource on research dealing with well integrity."
- 1773 - [June 2013] - EnergyInDepth, Steve Everley - "60 Percent of Statistics are Made Up"
"Writing in The New York Times on Christmas Day 2012, none other than Yoko Ono declared that 60 percent of wells producing natural gas from shale will fail – perhaps surprising those who weren’t previously familiar with Ms. Ono’s background and experience as a petroleum engineer. Expertise (or lack thereof) aside, could it really be the case that more than half of all wells will be “poisoning drinking water” sometime in the not too distant future?"
- 1774 - [January 10, 2013] - Oil & Gas Journal, API Committee - "API committee addresses annular casing pressure management"
"A new API recommended practice (RP) intends to provide a guide for managing annular casing pressure in offshore wells.
An August workshop in Houston reviewed the draft proposal and solicited input from the attendees. American Petroleum Institute (API), US Minerals Management Service (MMS), and the Offshore Operators Committee (OOC) organized the workshop.
API expects balloting on the new RP to take place in the first-quarter 2005."
- 1776 - [April 27, 2015] - Marine and Petroleum Technology, Richard J. Davies, Sam Almond, Robert S. Ward, Robert B. Jackson, Charlotte Adams, Fred Worrall, Liam G. Herringshaw, Jon G. Gluyas and - "Oil and gas wells and their integrity: Implications for shale and unconventional resource exploitation"
"Data from around the world (Australia, Austria, Bahrain, Brazil, Canada, the Netherlands, Poland, the UK. Here we assess all the reliable datasets (25) on well barrier and integrity failure in the published literature and online."
- 1777 - [March 1, 2014] - Society of Petroleum Engineers, George E. King and Daniel E. King - "Environmental Risk Arising From Well-Construction Failure—Differences Between Barrier and Well Failure, and Estimates of Failure Frequency Across Common Well Types, Locations, and Well Age"
"Do oil and gas wells leak to the environment? This paper will show the great majority of wells do not pollute. The purpose of this paper is to explain basic concepts of well construction and illustrate differences between single-barrier failure in multiple-barrier well design and outright well-integrity failure that could lead to pollution by use of published investigations and reviews from data sets of more than 600,000 wells worldwide"
- 1778 - [November 2013] - SHIP - Shale Gas Information Platform, Water Protection, Operations - "New numbers on well integrity failures"
"The biggest environmental concern with shale gas exploration and production is water contamination. Whether or not hydraulic fracturing causes methane contamination of drinking water remains to be proved (Davies, 2011), although the possibility cannot be totally ruled out. Well integrity failure is a far more likely cause of elevated thermogenic methane concentrations in shallow groundwater and water supplies than pathways induced solely by hydraulic fracturing (Davies et al 2014 and references therein). "
- 1779 - [September 26, 2014] - SHIP - Shale Gas Information Platform, Michael Prohaska1 and Gerhard Thonhause - "The Importance of Wellbore Integrity for Groundwater Protection in Shale Gas Well Construction."
"One of the major public concerns in shale gas development is the protection of groundwater from fluids that are flowing in a cemented steel casing from the shale gas reservoir to the surface. In the United States, more than 40,000 shale gas wells have been completed in the last two decades.
Following an intensive period of learning, the US shale gas industry slowly moved from prototyping to an economic and industrialized process in order to produce these previously inaccessible resources. This development process is still ongoing. Regulations as well as best practices from the oil and gas industry have had to be adapted to shale gas applications, and where necessary, new regulations defined. "
- 1817 - [August 2011] - Energy in Depth, Steve Everley - "How Anti-Fracking Activists Deny Science: Well Integrity"
"n the past week, we’ve covered three separate issues where anti-fracking activists categorically reject any scientific conclusion that differs from their preconceived ideology: air emissions and methane leaks, groundwater contamination, and public health. In this latest installment, we’ll look at activist claims on well integrity, “leaky” wells, and failure rates."