Typologie pétrophsique de réservoir de Bir Seba (Ouad Mya, Sud-Est algerien)

Abstract

The Bir Seba oil field is located northwest of the Hassi Messaoud field, in blocks 433a and 416b. It consists of Paleozoic formations ranging from Cambrian to Ordovician (Hamra quartzites). The sedimentological study of the two wells BRS 12 and BRS 23, through the description of the cores to prove the presence of five different facies "horizontal and vertical", according to it is last it was concluded that it has two different association "Fluvial environment and shallow marine environment". The study of the petrophysical and statistical parameters to confirm that the value of the greatest permeability is at the level of the BRS 12 well with a maximum value of 4.79 md while the value of the largest porosity is located at the level of BRS 12 well is 09%. The highest oil saturation values are in the western part of the deposit at BRS 16 (0.56)