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Exam #2 Review-11

# Exam #2 Review-11 - GEOL3413Exam#2REVIEW...

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Page 1 GEOL 3413 – Exam #2 REVIEW Lecture 8 (9/16) – Well Logs I Slide 3 – Be able to locate on a drawing these parts of a drilling rig: Crown block Derrick Traveling block Stand pipe and swivel Kelly Blow out preventers Drill pipe Drill bit Casing Engines Mud pit Slide 7 – Know the 2 primary actions of Drilling mud Slide 10 – Know how the SP log responds as mud resistivity changes! Slide 11 – On a Gamma Ray log be able to pick: gross sand thickness and 50% clean sand Slide 13 – Know how resistivity devices work wrt hydrocarbon effect on conductivity Slide 15 – Be able to read the value of Rt from the Deep Induction curve . Know how to calculate Water saturation using the Archie Equation Given values: Rw = 0.035 a = 2 m = 2 Rt = Read from Deep Induction curve φ = calculate from CNL‐FDC log Slide 15 – Know what a water bearing zone looks like on a Resistivity log Slide 16 – Know what gas and an oil zones look like on a Resistivity log Slide 17 – If given a description of the function of a Sonic Log be able to identify it

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Page 2 Slide 20 – Know the response of a CNL-FDC log to both gas and oil Be able to read a CNL‐FDC log and calculate porosity value – φ φ = φ D 2 + φ N 2 2 Slide 21 – Review Log responses for oil, gas and wet zones Slide 22 – Archie Equation (see above) NOTE porosity is written as a decimal not a % Slide 27 – Know that a low permeable zone (e.g. siltstone) has a wide oil-water transition zone while a very permeable zone has a narrow oil-water transition Slide 28 – Know the 5 uses of Dipmeter Logs Lecture 9 (9/19) – Clastic Depositional Systems I Slides 4 – Be able to recognize the SP log shape of a fluvial channel Slide 8 – If given the log on the right of the slide, be able to show the location of the – Oil/Water contact
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Exam #2 Review-11 - GEOL3413Exam#2REVIEW...

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