«Oilfield engineering»

Nano-containing inhibitors for removing inorganic salts deposition

UDC: 665.622.4
DOI: 10.33285/0207-2351-2023-8(656)-45-49

Authors:

¹ "OilGasScientificResearchProject" Institute, SOCAR, Baku, Azerbaijan

Keywords: salt deposition inhibitor, inhibited hydrochloric acid, nanoparticles, surfactant, inhibition efficiency, calcium sulfate, active substance, protective effect

Annotation:

Nano-containing compositions have been developed to inhibit salt deposits that appear on oil refining equipment and pipelines based on inhibited hydrochloric acid, aluminum nanoparticles, dispersant EC 9660A, laprol 4202-2B-30 and water. The density of the prepared compositions at 20 ºC is 1025…1055 kg/m³, the kinematic viscosity is 35…45 mm²/s, the pour point is minus 7…17 ºC, pH is 3…5.

The effectiveness of salt deposition inhibition was evaluated by a unified method based on the ability of the reagent to retain calcium and magnesium cations in the volume of a model-prepared mineral water. It was determined that the compositions at a flow rate of 50 mg/l cause a high protective effect (76,8…89,1 %) compared with cases in which the inhibitor consumption was 40 mg/l (73,9…81,3 %) and 30 mg/l (70,6…78,0 %). Very good results in terms of the high protective effect are shown by compositions in which the mass fraction of laprol 4202-2B-30 is 8 %.

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