عنوان مقاله [English]
The main part of oil produced in Middle East is supplied from carbonate reservoirs, the majority of which are fractured ones. These reservoirs produce higher rates at their early ages which is followed by lower rates afterwards, leading to low overall recovery values. The purpose of most drillings is to increase production over longer periods. A reservoir simulation study was carried out on a fractured Middle Eastern carbonate field to determine the optimal production strategy. The three possible methods - natural depletion, gas injection and water injection- were then compared. Results indicated that water injection exhibits better recovery values than gas injection and natural depletion. This is expected since rock exhibits intermediate oil-wetting values, meaning that higher recoveries are achieved due to water flooding. The presence of fractured rocks led to early breakthrough and lower recoveries in gas injection method. The different physical mechanisms affecting oil recovery values are discussed and a few suggestion were presented for other fields possessing the same fracture properties and wet-abilities.
 McNaughton D.A. & Grab F.A., Finding & evaluating petroleum accumulations in fractured reservoir rock, 4th Ed., McGraw-Hill Inc., 1975.
 Aguilera R., Naturally fractured reservoirs, 2nd Ed., McGraw-Hill Inc.,1995.
 Van Golf Racht T.D., Fundamentals of fractured reservoir engineering, 1st Ed., Elsevier Scientific Publishing Company, 1982.
 Gholipour A.M., “Pattern & structural position of productive fractures in the asmari reservoirs, south western Iran”, SPE/CIM, Canada, Calgary, 1994.
 McQuillan H., “Fractured- controlled production from the Oligo– Miocene asmari formation in Gachsaran & BiBiHakimeh fields, southwest Iran carbonate petroleum reservoirs”, GSA, Vol. 85, No. 5, pp. 739-744, 1985.
 Boerrigter P.M., Van de Leemput B.L.E.C., Pieters J., Wit K. & Yama J.G.J., “Fractured reservoir simulation case studies”, Koninklijke/Shell E and P Laboratorium, SPE-25615-MS and Middle East Oil Show, Bahrain, 1993.
 Touami M. & Gribi A., “Field Case, Hassi Messaoud”, AAPG Hedberg Conference, Algiers, Algeria, 2003.
 Gas processors Suppliers Association, Engineering data book, FPS Version, Vol. I,II, Sections 1-26, 12th Ed. 2004.
 Willhite G.P., “Water flooding”, SPE Textbook Series, Vol. 3, ISBN: 978-1-55563-005-8, 1986.
 Daltaban T.S., PEMEX Consultant/CORELAB: Noyola A., Trejo G., Toledo R., PEMEX, “An investigation into the technical feasibility of gas injection Into fractured CHUC reservoir in the gulf of Mexico”, Paper No. 74357 MS, SPE International petroleum conference and exhibition in Mexico, Villahermosa, Mexico, 2002.
 W.Lake L., L.Schmidt R. & B.Venuto P., A niche for enhanced oil recovery in 1990’s, Schlumberger Oilfield Review, 1992.
 Services and Product Softwares Group, Reference manual of eclipse, Schlumberger, 2004A.
 جابری م., "شبیهسازی تزریق گاز و آب در یک مخزن دریایی"، پایاننامه کارشناسی ارشد، دانشگاه صنعتی امیرکبیر، بهار 1383.
 Saidi A.M., “Tweny years of gas injection history into wellfractured haftkell field”, International petroleum conference, Mexico, Mexique, pp. 123-133, 1996.