Study of Barium Sulphate Formation in the Oil Installations – Case of Region STAH

Barium sulphate deposit creates problems in the STAH oil field’s (clogging of pipelines, pumping, shutdown of facilities, etc.). The main cause is the use of the injection water mixture from the F3 and F6 tanks to maintain the pressure in the oil wells. These two waters are incompatible in their composition, because, when mixed together, causes solid deposit of barium sulphate. The main goal of this study is to understand the deposition phenomenon of bar-ium sulphate by studying the compatibility of the water of injection in this case the F3 and the F6 with different mixing rates, the influence of the pH and the temperature. To consolidate the work, a mobilization using the "Ellistat" software was carried out, using the various parameters mentioned above. This mathematical model allows us to predict the mass of barium sulphate deposited.