أنموذج جيولوجي-مكمني ثلاثي الأبعاد لتكوين المشرف في حقل حلفاية

الملخص EN

In this paper, identification of the petrophysical characteristics of Mishrif formation in Halfaya oilfield is obtained by interpreting the wireline logs for (Hf-2, Hf-3, Hf-5, and Hf-7) wells.

Calculations were made for the total porosity (effective), secondary porosity, volume of shale and water saturation, hydrocarbon saturation (both moveable and residual in invaded zone and un-invaded zone).

Based on the petrophysical properties, depending on wireline logs patterns Mishrif formation can be divided into three reservoir units which are: mA, mB, and mC (using Techlog 2011 software), these units are subdivided into secondary units based on petrophysical analysis results (total porosity), where the main unit (mB) is splitted into the subunits (mB11), (mB12), mB21), and (mB22), Isolated units separate these subunits.

The reservoir petrophysical parameters were simulated through build a 3D reservoir simulation model for porosity and hydrocarbon saturation (using Petrel 2009 software) to demonstrate the distribution of these properties in each reservoir unit within the field wells.

The results revealed that the best reservoir units are (mb12), (mB21), and (mB22).

On other hand the subunits of (mC) are thick and have poor hydrocarbon saturation.

It's noticed that the hydrocarbon saturation for units (mB) and (mA) is increasing towards the east flank of the field (well Hf-2).