Oil and gas wells can develop gas leaks along the casing years after production has stopped and the well has been plugged and abandoned. Explanations include channeling, poor cake removal, shrinkage, and high cement permeability. The reason is probably cement shrinkage that leads to circumferential fractures that are propagated upward by the slow accumulation of gas under pressure behind the casing.
Follow Us
All About Plastic
A booklet designed to show the magnitude of today’s problem and to encourage you to become involved in finding solutions. Download pdf.
Environment – Pittsburgh Post Gazette
- Supreme Court leaves dwindling paths for Biden's climate mission July 1, 2022
- Supreme Court limits EPA’s ability to regulate planet-warming power plant emissions June 30, 2022
- Proposed U.S. Steel permit at the forefront of air quality public hearing in Braddock June 30, 2022
- Remembering Hurricane Agnes’ impact on Pittsburgh, 50 years later June 27, 2022