No doubt that facies modelling process is a key process during building the static model which dominates all the petrophysical distribution after that. One of the best way to describe the facies change laterally across the reservoir is seismic attributes interpretation. However; unfortunately seismic attribute doesn't show accurate results in Western Desert in Egypt mostly because the reservoirs thickness is relative small.Several trials on seismic attributes were performed during performing a study on West Qarun field which is located in Abu El-Gharadig basin, Western Desert, Egypt but without reaching conclusive results. West Qarun wells are producing mainly from Middle Abu Rawash "G", and Lower Abu Rawash "G" reservoirs which their thickness ranges from 30 to 60 ft. This paper presents another approach that was utilized to create facies log for each well integrating the petrophysical interpretation output and the core data as well. After that a thickness map for each facies per each reservoir was created. The resulted maps were utilized for facies model creation and consequently dominated the petrophysical properties distribution: porosity, permeability, and initial water saturation.Permeability-Porosity relationship was described as a function of flow zone indicator (FZI) considering the distributed facies model. Defining FZI range for each facies type yields to more accurate reservoir characterization and prevents usage of unreliable permeability multipliers during history match process.In spite of the absence of seismic attributes conclusive results, the resultant model showed excellent results during dynamic model in terms of production potential of different areas of the reservoir and the connectivity between different wells. The model showed good well by well match, total field match specially the ongoing pilot water injection project and also helped in planning the complete water injection project.

The West Qarun development concession is located in the Abu Gharadig basin of the Western Desert, approximately 200 km SW of Cairo City. The block comprises a gross area of 46.2 km2 and contains the producing West Qarun oil field. Oil production commenced in October 1994 from four wells with initial production rate 1200 BOPD. The field showed constant production for the last ten years before SOG acquired the concession at a level of ±500 BOPD. The cumulative oil production amounted to 6 MMSTB of 40 deg API non-sulfurous, slightly low gas-oil-ratio paraffinic crude mainly from the Abu Roash 'G' and Upper Bahariya reservoirs through fifteen wells.SOG after acquiring the concession, in 2009, conducted 3D seismic survey in order to reveal the uncertainties concerning field structure and its interpretation opened new chances by indicating higher OOIP and new promising locations for drilling. The results of new drilled wells WQ-7, WQ-9, and WQ-10 proved the new interpretation and gave more confidence in the resulted figures.The Abu Roash "G" producing sands are characterized by formation tightness. So applying of hydraulic fracturing technique to enhance the existing wells productivity showed excellent results. Also tight formations need large shut-in time to obtain accurate pressure measurements. Therefore a pilot test was conducted to study the effect of shut-in time on the pressure measurements which will be illustrated thereafter.Based on the studies, a complete development plan was prepared and the application of the first stage resulted in increasing the production five times (from 500 to 2500 BOPD) and tripling the proven remaining reserves as well (from 6.3 MMSTB to 19.5 MMSTB). This paper will illustrate the approaches applied for the rejuvenation of West Qarun field and emphasizes the role of reservoir characterization and reservoir management in maximizing the field value.

Since the last decade of the twentieth century, the Egyptian government started enacting new policies aiming at attracting national and international investments through facilitating the regulations and procedures which hinder production and investment resolutions. In this concern, the laws were issued as a step to attract the investment of the Egyptian private sector, international investment and financing corporations. Of the transactions that have recently occurred is the Sale and Purchase of the 50% operatorship interest of North Bahariya Concession.The North Bahariya Concession is an onshore oil concession located in the Western Desert of Egypt, 190 Km SW Cairo City. Currently, the concession covers two development leases namely North Bahariya and Rawda with total approximate area of 117 km 2 containing six producing oil fields; Abrar, Ferdaus, Ganna, Rawda, Rayan, and the most recent field Sidra. The primary productive horizons are the Cretaceous Abu Roash 'G' and Upper Bahariya with secondary production from the Abu Roash 'E'. This paper aims to have an outlook on the evaluation process procedures as well as address the different views on the blocks by many evaluators. The seller had a certain view for the concession potentiality while the buyer has believed in additional potentials based on which the acquisition has been evaluated.Exploration, appraisal, and development activities have been done by the acquirer to prove/disprove the idea of the unseen, by the ex-operator, potentiality. The activities results have had a great effect on the picture of the reserves and resources estimates with new aggressive development plan.The current estimates of OOIP, reserves, upside potential, and field development plans have been completely refurbished according to the new potentiality view as the production and reserve have been increase by 4 times . Trusting the judgment is the key to prove the ideas.

West Qarun (WQ) and Abrar fields are located in Abu El Gharadig (A/G) basin in the Egyptian Western Desert with a combined area of about (82) Km2. Drilling activities in this area were commenced in late 1980s till first oil discovery was announced by (AMOCO) in (1994), Since that; and through February 2009; a total of (4.2) MMSTB oil was produced from six wells in both fields. This paper demonstrates that an intensive review of petrophysical parameters had led to re-discovering the actual unforeseen bigger volume of the old matured fields that had been producing since decades; resulting in boosting up the combined production levels from about 600 BOPD to about 7000 BOPD while still development activities continues to prove extensions to both field and add more reserves. Subject fields are producing upper cretaceous reservoirs of both Abu Roash G (A/R_G) and Upper Bahariya (U.B.) formations; this area was formerly famous for low well productivity and non-encouraging economics; but after Sahara Oil and Gas Co. (SOG) received the operatorship of these oil leases in Feb 2009, a petrophysical interpretation review was applied to find out the reason behind more than 10 years of stable production rates, the review included investigating the validity of the formerly used models for interpreting the existing shaly sand that indicated high water saturations that never matched the production data; also, an individual well interpretation parameters were considered instead of the formerly generalized set of parameters over-all the fields. The conclusion of this paper could be summarized in attracting attention to the importance of a new eye vision when considering a new evaluation of reserves of an oil field that had been formerly considered as a matured one; while still investigating each piece of information that might have over-estimated or under-estimated the never-seen reservoir volume.