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ANALYSIS OF PRESENT TECHNICAL, TECHNOLOGICAL AND LEGAL SOLUTIONS PROVIDING INTEGRITY OF OIL WELLS

Professor Rafal Wisniowski, MSc Pawel Zapior

Abstract

Constant economic development has an influence on the global emission of greenhouse gases. Having experienced natural disasters, e.g. floods and droughts, most of the highly developed countries became more conscious about their impact on the environment. In 2014, the global CO2 emission accompanying fuels combustion and industrial processes totaled to 35.669 billion tonnes, in that 298.131 million tonnes in Poland[15]. The counteracting climate changes in view, in March 2007 the European Parliament assumed an energy-climate package focusing on the reduction of greenhouse gases by 20% to 2020 (as compared to the reference year of 1990). One of the ways of limiting emission is CO2 sequestration (Carbon Capture and Storage). Gases can be stored on land in abandoned deposits of hydrocarbons, salt caverns or deep aquifers. This aim can be achieved by using the already existing wells. The possibilities of using oil wells for CO2 injection and influence of particular safety barriers on the integrity of the well are presented in the paper. The safety barriers have been divided into primary and secondary, depending on the works performed in the well. Bearing in mind the state of the art, new drilling techniques and technologies, the authors suggest using third grade safety barriers, e.g.: system monitoring pressure in the well while drilling, i.e. Managed Pressure Drilling, where the pressure is controlled by a rotary BOP; SOR system monitoring pressure in the well with the use of manometers in the space between columns; complex monitoring system covering the area around the well for hydrocarbons.

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DOI resolver: doi.org/10.5593/sgem2017h/15/s06.002

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