1:53 AM CHARD CASSNNaA UTPB / Petroleum Engineering PENG 3302-Reservoir Rock and

Question

1:53 AM CHARD CASSNNaA UTPB / Petroleum Engineering PENG 3302-Reservoir Rock and Fluid Properties Open Book-60 min Name: Midterm 1-Part II 06/09/2015 Any missing data may be assumed and justified (20 Points) 01: Given the following: Weight of dry sample in air 64g Weight of dry sample coated with paraffin- 66 (Ppi 0.85 g/cc) coated sample in brine (Prns 1.15 gce) 38 g Weight of a crushed and re-compacted sample in air- 63.0 g Weight crushed and re-compacted sample in brine -42.0g Find: 1- Bulk volume, pore volume, and grain volume 2- Porosity Sample density 4- Find original volumes of oil and gas in place (L-1000 ft, W- 200 ft, H-200 ft). 5-Find oil flow rate (oil saturation-80%, k-50nd, pressure drop-2000 psi, oil viscosity 5 cp) 6- Life of wells assming you have l0 wells (Goo coney Gas 0 80 060 040 0.20 0 00- 000 020 040 060 0 00 Oil Saturaton

Explanation / Answer

SOLUTION:

The drop in weight due to immersion in brine is (66.0-38.0) g = 28.0 g.

Specifid Gravity of Brine is 1.15 g/cc.

So, volume of displaced brine is (28.0 / 1.15) cc = 24.35 cc.

Volume of the Paraffin coat is {(66.0-64.0)/0.85} cc = 2.35 cc.

Hence the Bulk Volume of the sample is (24.35-2.35) cc = 20.0 cc.

Grain volume is calculated as Weight / Grain density = {64.0 g / (2.65 g/cc)} = 24.15 cc.

Pore Volume is (Bulk Volume- Grain volume) = (24.15-20.0) cc = 4.15 cc.

Porosity is calculated as

    phi=(Vp/Vb)*100 =(4.15/20.0)*100= 18.86%

Sample Density is calculated as Weight/Bulk Volume = 64.0 g / 24.15 cc = 2.65 g/cc.

Rock Type is Quartz.

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