An In-depth Study of Calcium Carbonate Scale Formation and Inhibition

Publish Year: 1393
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_IJOGST-3-4_006

تاریخ نمایه سازی: 18 اسفند 1397

Abstract:

A fundamental study of scale formation of calcium carbonate (CaCO3) for producing oil wells has been carried out. This article presents the study of the prediction of salt deposition in two different synthetic formation waters and investigates the effects of temperature and pressure on calcium carbonate precipitation. The dependence of the induction period of the precipitation of calcium carbonate on the concentration of calcium ions was studied. In order to study the chemical scale inhibition, the most effective inhibitors, which are based on the risk analysis of scaling and laboratory reagent selection, were examined for evaluating the performance of salt inhibition. In this work, a new multi-component inhibitor was made and its scale effectiveness was evaluated at different concentrations. The developed inhibitor was mixed with other inhibitors to prevent calcium carbonate precipitation. The observations showed the synergetic inhibition effect on the scale inhibition at different concentrations of scale inhibitors. The new inhibitor provided high scale effectiveness at specific concentrations and low corrosion activity.

Authors

Azizollah Khormali

Department of Oil and Gas Field Development and Operation, Oil and Gas Faculty, National Mineral Resources University (University of Mines), Saint Petersburg, Russia

Dmitry Gennadievich Petrakow

Department of Oil and Gas Field Development and Operation, Oil and Gas Faculty, National Mineral Resources University (University of Mines), Saint Petersburg, Russia

Georgy Yuryevich Shcherbakov

Department of Oil and Gas Field Development and Operation, Oil and Gas Faculty, National Mineral Resources University (University of Mines), Saint Petersburg, Russia