PETE 4088 HW 2
2
PETE 4088. Homework II. From Bassiouni text. 1. A gas well in the Muddy Ridge field, Wind River Basin, Wyoming, produces from a tertiary sand formation characterized by the following data. Depth = 2122 feet Porosity = 21% Resistivity = 43 ohm-m Rw (from a water sample) = 3.28 ohm-m at 68 degrees F Formation temperature = 90 degrees F Qv (from core samples) = .3 meq/ml Estimate the gas saturation assuming clean sand Estimate the gas saturation using the Waxman Smits equation 2. X-ray diffraction analysis of a sandstone core sample shows that it contains 18% clay by weight. The clay consists of 10% smectite and 8 % illite. The sandstone has a total porosity of 14%. Calculate the Qv. 3. Describe in one paragraph why sandstones containing clay have a higher conductivity than clean sands. 4. What is the term B related to in the Waxman Smits model? How would you determine it to use in a log analysis?
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PETE 4088 formation evaluation shaly sand homework. using data from Bateman 2012 book. Homework use equation Waxman and Smits to find water saturation in shaly sand.
Transcript of PETE 4088 HW 2
PETE 4088. Homework II. From Bassiouni text.
1. A gas well in the Muddy Ridge field, Wind River Basin, Wyoming, produces from a tertiary sand formation characterized by the following data.
Depth = 2122 feet
Porosity = 21%
Resistivity = 43 ohm-m
Rw (from a water sample) = 3.28 ohm-m at 68 degrees F
Formation temperature = 90 degrees F
Qv (from core samples) = .3 meq/ml
Estimate the gas saturation assuming clean sand
Estimate the gas saturation using the Waxman Smits equation
2. X-ray diffraction analysis of a sandstone core sample shows that it contains 18% clay by weight. The clay consists of 10% smectite and 8 % illite. The sandstone has a total porosity of 14%. Calculate the Qv.
3. Describe in one paragraph why sandstones containing clay have a higher conductivity than clean sands.
4. What is the term B related to in the Waxman Smits model? How would you determine it to use in a log analysis?
