Gamma Ray SP- If drilled with a moderate salinity mud Acoustic, Delta t Clean Sa
ID: 298646 • Letter: G
Question
Gamma
Ray
SP- If drilled with a
moderate salinity mud
Acoustic,
Delta t
Clean Sand with gas and fresh formation water
Shaly Sand with oil and saline water
Limestone with Gas and fresh water
Shallow Coal Bed
Unconsolidated shaly sand with gas and fresh water
Well consolidated shaly sand with gas and fresh water
Fill in the table above with qualitative descriptions of how each well log would respond to the given conditions, with a brief explanation. Descriptions might be, high, low, indeterminate.
conditionsGamma
Ray
SP- If drilled with a
moderate salinity mud
ILD LLD Bulk Density Neutron PorosityAcoustic,
Delta t
CaliperClean Sand with gas and fresh formation water
Shaly Sand with oil and saline water
Limestone with Gas and fresh water
Very High to the right n/A High Low Low High NormalShallow Coal Bed
Unconsolidated shaly sand with gas and fresh water
Well consolidated shaly sand with gas and fresh water
Explanation / Answer
conditions
Gamma
Ray
SP- If drilled with a
moderate salinity mud
ILD
LLD
Bulk Density
Neutron Porosity
Acoustic,
Delta t
Caliper
Clean Sand with gas and fresh formation water
Very low due to less content of clay
To the left
High due to gas
Normal
High due to high hydrogen index
normal
normal
Shaly Sand with oil and saline water
normal
To the left
high
normal
high
high
Low, as shale swell the formation
Limestone with Gas and fresh water
low
to the right
high
high
high
Low due to compacted limstone
normal
Shale/organic material
Very High
to the right
n/A
High
Low
Low
High
Normal
Shallow Coal Bed
normal
To the right
Normal due to mixing of volatile material in shallow coal seams
low
high
high
normal
Unconsolidated shaly sand with gas and fresh water
high
To the left
high
low
high
high
High, due to caving
Well consolidated shaly sand with gas and fresh water
Very high
To the left
normal
high
High
low
normal
conditions
Gamma
Ray
SP- If drilled with a
moderate salinity mud
ILD
LLD
Bulk Density
Neutron Porosity
Acoustic,
Delta t
Caliper
Clean Sand with gas and fresh formation water
Very low due to less content of clay
To the left
High due to gas
Normal
High due to high hydrogen index
normal
normal
Shaly Sand with oil and saline water
normal
To the left
high
normal
high
high
Low, as shale swell the formation
Limestone with Gas and fresh water
low
to the right
high
high
high
Low due to compacted limstone
normal
Shale/organic material
Very High
to the right
n/A
High
Low
Low
High
Normal
Shallow Coal Bed
normal
To the right
Normal due to mixing of volatile material in shallow coal seams
low
high
high
normal
Unconsolidated shaly sand with gas and fresh water
high
To the left
high
low
high
high
High, due to caving
Well consolidated shaly sand with gas and fresh water
Very high
To the left
normal
high
High
low
normal
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.