Analyse et Traitement des eaux avant réinjection dans les puits d’huile – Champ Hassi Messaoud

Abstract

The Current work is to predict and delay / prevent the formation of mineral deposits in salted oil wells during the injection of treated water during the different phases of the well life. Seven wells were selected for Hassi-Messaoud field. Albien well (MDHA11) was analyzed in the company's laboratory and compared to the reference oil field water analysis to reach the forecasting study and were explained through the DownHOLE SAT program which provides the physical and the chemical conditions for the formation of salt deposits of all types Because of the incompatibility between these water at the molecular level, which requires treatment of water injection in the well by AD32 deposit inhibitor to avoid this dilemma. The analysis of the selected wells samples (HGA8, MD411, MD525, MD226, MD625 and MDZ556) for the period 2010 to 2018 showed that the efficacy of treatment is influenced by several factors and operational conditions. This analysis and treatment allow for the identification of different types, Forms and cases of mineral deposits formation and determine the best ways or means to fight them