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Lecture 2-9-09

# Lecture 2-9-09 - dran 40 acres having an average thickness...

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UNIT STANDARDS Quantity SI (mks} cgs lb mass Lb force mass(M) kg gm lb (m) slug length(L) meter cm foot foot time(T) sed sec sec sec force(F) newton dyne poundal lb (force) pressire(P) pascal dynes sq cm psi psi

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INITIAL OIL IN PLACE (1 ) i cw N Ah S φ = - (reservoir volume, comsistant units) To get to stock tank volumes we use the formation factor (1 ) cw i o Ah S N B φ - = But we would like to have the oil in STB, the area in acres and the height of the oil column in feet.
INITIAL GAS IN PLACE (1 ) i cw G Ah S φ = - Starting with the same consistant equation: And using the same techniques: (1 ) cw i g Ah S G B φ - = (using the standard definition for B although many people use an inverted definition

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Change to common field units 7758 (1 ) cw i o Ah S N STB B φ - = For oil: Area in acres H in feet For gas . 43560 (1 ) cw i g Ah S G SCF B φ - = Area in acres H in feet
Homework – due next Monday 1. A new well is proposed for an oil field under development. It is expected to
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Unformatted text preview: dran 40 acres having an average thickness of 23 feet. Core analysis has shown an average of 23% porosity and a connate water saturation of 19%. If the formation volume factor is 1.27, estimate the initial oil in place for this well in STB. 2. A new gas well has ben completed at 8,500 feet. It has 38 feet of net pay, a 18% porosity and a water saturation of 19%. The gas formation volume factor is 0.0042. It is expected to drain 160 acres. What is the original gas in place. . 3. Using the conversion tables (and the method described there), derive an equation similar to that used in problem where the reservoir area will be in hectares and the thickness will be in meters ,but the oil volume will stioll be in STB...
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• Spring '08
• Taylor
• International System of Units, Imperial units, Conversion of units, Centimetre gram second system of units, SCW

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Lecture 2-9-09 - dran 40 acres having an average thickness...

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