Published September 2025, Pg. 20-25

Section: Technique and technology of oil-gas production

UOT: 622.276:658-58

DOI: 10.37474/0365-8554/ 2025-09-20-25

Development of new technology against salt deposits

N.N. Khalilov PhD in Tech. Sc. - “Oil-Gas Scientific Research Project” Institute

The solution of this problem is still topical, despite the availability of various methods aimed at eliminating complications arising at the wells of oil and gas field departments of Azerbaijan. In processes of struggle against salt deposits on oilfield equipment it is proved that the most effective method is prevention of their formation. Known methods used to solve problems of salt deposits formation do not provide full protection of equipment. The most progressive method of salt deposits prevention is application of chemical inhibitors. For this purpose, new compositions for desalination prevention have been developed and their mechanism of action explained. Firstly, the causes of salt deposits formation were scientifically investigated and the relevance of developing new compositions to solve this problem was noted. 
The article presents the results of laboratory studies of new inhibitors of salt deposition developed mainly for protection of oilfield equipment, pipelines from mineral salt deposits. To prevent mineral salt deposits new compositions based on mono-, di-, triethanolamines, orthophosphate acid and dispersant ES 9660A have been developed. Hard-to-access, expensive reagents were not used in the development of the compositions.
Laboratory studies of SBR-1, SBR-2 and SBR-3 compositions developed to prevent calcium and magnesium sulphate deposits formation in the range of 20–30 mg/l flow rate were carried out. According to the research results, the protective effect of the inhibitors of SBR series was in the range of 74.2–86.8 %. 
The results on determining the protective effect of inhibitors showed that among these inhibitors, SBR-3 inhibitor was the most effective. The efficiency of SBR-3 inhibitor above 80 % was obtained at a flow rate of 30 mg/l.

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