Tekanan kapiler - CAPILLARY PRESSURE DEFINITION Perbedaan tekanan yang ada di antarmuka memisahkan dua cairan bercampur dalam kapiler Pc = pnwt pwt

Tekanan kapiler - CAPILLARY PRESSURE DEFINITION Perbedaan...

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1 Perbedaan tekanan yang ada di antarmuka memisahkan dua cairan bercampur dalam kapiler P c = p nwt - p wt CAPILLARY PRESSURE - DEFINITION - Where: P c = capillary pressure P nwt = pressure in nonwetting phase p wt = pressure in wetting phase • One fluid wets the surfaces of the formation rock (wetting phase) in preference to the other (non-wetting phase). • Gas is always the non-wetting phase in both oil-gas and water-gas systems. • Oil is often the non-wetting phase in water-oil systems.
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Definisi kapilaritas. Kapilaritas adalah gejala zat cair melalui celah-celah sempit atau pipa rambut. Celah-celah sempit atau pipa rambut ini sering disebut pipa kapiler. Gejala kapilaritas disebabkan adanya gaya adhesi atau kohesi antara zat cair dengan dinding celah itu. Akibatnya, bila pembuluh kaca dimasukkan dalam zat cair, permukannya menjadi tidak sama. Kapilaritas merupakan peristiwa naik atau turunnya zat cair pada bahan yang terdiri atas beberapa pembuluh halus akibat gaya adhesi atau kohesi, misal naiknya minyak pada sumur. Contoh kapilaritas dalam kehidpuan sehari-hari 1. Menyebabnya air yang menetes di ujung kain 2. Minyak tanah naik melalui sumbu kompor 3. Air meresap ke atas tembok 4. Naiknya air melalui akar pada tumbuhan 5. Menyebarnya tinta di permukaan kertas Sumber: fcEhxYl 2
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3 Determine fluid distribution in reservoir (initial conditions) Accumulation of HC is drainage process for water wet reservoirs (max possible HC saaturation) S w = function of height above OWC (oil water contact) Determine recoverable oil for water flooding applications Imbibition process for water wet reservoirs Pore Size Distribution Index, Absolute permeability (flow capacity of entire pore size distribution) Relative permeability (distribution of fluid phases within the pore size distribution) Reservoir Flow - Capillary Pressure included as a term of flow potential for multiphase flow Input data for reservoir simulation models Applications of Capillary Pressure Data
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  • Fall '13
  • Fluid Dynamics, Surface tension, capillary pressure, Leverett, ruang pori reservoir

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