Problems of scaling when producing oil and gas in Yaraktinsky and Danilovsky deposits
Salts precipitation and deposition is one of the most important problems when producing oil in the Eastern Siberia. Inorganic salts sedimentation on the walls of the tubing and underground equipment leads to a reduction in the effective diameter and a decrease in the throughput. The article presents the general information on scaling in Yaraktinsky and Danilovsky oil and gas-condensate fields (YaOGC and DOGC). Conditions that promote salt formation at YaOGC and DOGC fields are described. Water compatibility studies, the analysis of field data and effectiveness of the treatments used to combat scaling are carried out. The current methods of scaling prevention and removal are evaluated. The most optimal ways of combating scaling of different types are proposed based on the developed algorithm of salt-depositional wells determination and the need for protection against scaling.