Skokov V. V. – Gazprom dobycha Astrakhan LLC, Astrakhan, the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Problems which arise in the process of wells construction at Astrakhan gas condensate field (GCF) caused by brine
manifestation are the most intractable. The majority of the problems (up to 70%), caused by brine manifestation is
detected within the interval of 2800–3800 m in wells situated at the slopes of salt domes, the minority is detected in the
wells staked at the vaults and troughs. Factors which define the choice of strategy against brine manifestation at gas wells
construction are the genesis of brines and lithological confinedness of their bedding in the depth of chemogenic rock
assemblage of a mine. The article introduces the conditions of brines formation, their chemical composition (in conditions
of Astrakhan GCF) along with the factors which contribute to brines redistribution within inter-salt beds. With the account
of the experience of wells construction at Astrakhan GCF in conditions of brine manifestation the variants of the said
problem elimination are examined.
Key words: wells swabbing; sediment brine; leaching brine; mineralization; abnormally high formation pressure;
intercrystalline gas-liquid impurities; salt dome structure.
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