Technological problems and fundamental principles of methods of engineering-geocryological exploration during construction and exploitation of wells in permafrost rock mass

• Main Authors: Z. N. Cherkai, E. B. Gridina
• Format: Article in Journal/Newspaper
• Language: English; Russian
• Published: Saint-Petersburg Mining University 2017
• Subjects: Mining engineering. Metallurgy; TN1-997; permafrost
• Online Access: https://doi.org/10.18454/pmi.2017.1.82; https://doaj.org/article/c1243521b7ce46988759deb9ceb8d2eb

The article describes peculiarities and complicating factors when constructing wells in cryolithic zones. It also presents fundamental principles of methods of pilot parametric drilling for complex exploration of engineering-geocryological conditions of multiple-well gas production platforms. The article describes peculiarities of geophysical examinations within the complex of parametric drilling for clarification and correlation of log sheet, and identifying non-commercial gas reservoirs and interpermafrost head oil-filed water horizons in permafrost rock mass. We defined main ecological issues of parametric drilling and presented potential environment pollutants from well drilling in cryolithic zones. It concludes a list of factors, which should be considered during gas well drilling in northern zones for meeting the «safety – sustainability – low waste» criteria.