«Onshore and offshore oil and gas well construction»

Improvement of well completion technological processes and technical tools when completing wells

UDC: 622.245
DOI: -

Authors:

¹ Kuban State Technological University, Krasnodar, Russia
² Maikop State Technological University, Maikop, Russia
³ Russian Academy of Natural Sciences, Moscow, Russia

Keywords: well, cement slurry, completion, cementing, casing, centralizer

Annotation:

The development and improvement of well completion processes and technical tools aimed at reducing material and energy costs, increasing reliability and durability, and maximizing the preservation of reservoir properties are of great national economic importance. Well completion is one of the most fundamental and technologically complex processes, encompassing the entire work cycle from a productive formation opening to wells commissioning. Despite increasing attention being paid to improving wells completion quality, the average relative reservoir productivity of production wells, according to the authors’ data and estimates of many researchers, remains almost half of the potentially possible, with the completion period ranging from a few days to months. Furthermore, many of the newly commissioned wells experience inter-casing pressures or water-flooded during the first months of operation. It is explained not only by the lack of modern methodologies but also by the poor organization of their implementation as well as by the fact that these methodologies are not comprehensive and not tailored to specific mining and geological conditions.

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