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Experimental investigation of free and forced gravity drainage in petroleum fractured reservoirs

هفتمین کنگره ملی مهندسی شیمی
Year: 1390
COI: ICHEC07_629
Language: EnglishView: 565
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mohammad amin Ariana - department of petroleum Engineering, gachsaran branch islamic azad university gachsaran iran
Rouhollah taaghizadeh - department of petroleum Engineering, gachsaran branch islamic azad university gachsaran iran


Gas/oil gravity drainage takes place in the secondary gas cap, where the matrix is filled with oil and surrounded by gas-filled fractures. Oil will be produced into the fractures by gravity forces at a rate mainly governed by the density difference Δρ between oil and gas, matrix permeability k, the oil viscosity µo, the oil relative permeability kro, and the height of the gas/oil capillary transition zone H relative to the height H of draining oil column: ݍ ൌ ௞௞ೝ೚ܣ∆ߩ݃ሺ1 െு೎ ሻThe main goal of these experiments is qualitative and quantitative investigation of oil recovery by free gravity drainage and gas injection in various rates and the effect of block height on oil recovery. In free fall gravity drainage, oil is produced just by gravity forces, while after the gas injection, the pressure difference between two permeable zones, provides essential forces for displacing fluid into the low permeable zone and produce the remaining oil. All the experiments have been done using glass etched micromodel and the pictures have been recorded by camera.


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Ariana, mohammad amin and taaghizadeh, Rouhollah,1390,Experimental investigation of free and forced gravity drainage in petroleum fractured reservoirs,07th International Congress on Chemical Engineering,Kish Island,

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  • - Ali M. Saidi, Reservoir Engineering Of Fractured Reservoirs (Fundamental ...
  • Stahl, R. F., Martin, W.A., and Huntington, R.L, "Gravitationl Drainage ...
  • Lewis, J.O., "Gravity Drainage in Oil Fields", Trans AIME, 155, ...
  • Terwilliger, P.L, Wilsey, L.E., Hall, H.N., and Bridges, P.M., _ ...
  • Marx, J.W.T- "Determining Gravity Drainage Characteristics on the Centrifuge", Petr ...
  • Dumore, J.J. _ and Schols, R.S., "Drainage Capillary - Pressure ...
  • SPE/DOE 17379 Enhanced _ Recovery by Inert Gas Injection by ...
  • SPE 39881, An Integrated Investigation for Design of a CO5 ...
  • Displacement Visualization of Gravity Drainage by Micromodel, V.A. Sajadian/ NIOC ...

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