Q2) Choose the best correct answer(s) for the following multiple choice questionsMCQs 1.Which type of resistivity tool can be used in a well which has been drilled with oil-base mud ? a) Laterolog, b) Induction c) Both Laterolog and Induction d) MSF
Q2) Choose the best correct answer(s) for the following multiple choice questionsMCQs
1.Which type of resistivity tool can be used in a well which has been drilled with oil-base mud ?
a) Laterolog,
b) Induction
c) Both Laterolog and Induction
d) MSF
2 .what can cause the resistivity of a rock to increase (Choose two)
(a) An increase in connate water resistivity
(b) A decrease in tortuosity
(c) A decrease in formation porosity
(d) An increase in water saturation
3 .Generally with resistivity tools the greater the spacing between the measuring electrodes the greater the depth of investigation .
(a) True
(b)False .
4 .Which of the following indicate that a rock is permeable ?
a) Low gamma-ray
b) SP deflection
c) Low resistivity
d) High porosity
e) Small caliper Reading
f) All of the above
5 .The density porosity tool responds to the total formation porosity not effective porosity .
a) True
b) False
c) It Depends on the depth of invasion
6 .Which of the following is correct with respect to the effect of the presence of shale and gas on the Compensated Neutron tool?
a) They have the similar effects, each causing the tool to read high porosities.
b) They have similar effects, each causing the tool to read low porosities .
c) They have opposite effects, shale causing the tool to read high and gas causing it to read low porosities
7 .When gas replaces oil in a clean sandstone, Density-Neutron log separation :
a) Increases
b) Decreases
c) Remains the same .
8 .You are given the Gamma-Ray log on a well which has been drilled through a siliciclastic sequence. The Gamma-Ray reading of a clean sand is 20 API units and the shale baseline has a reading of 120 API units. The Gamma Ray Shale Index of a formation is 0.25. The Gamma Ray reading across f this formation is ? (You MUST show your calculations to support your choice, otherwise, your answer will not e considered)
a) 25API units
b) 35API units
c) 45API units
d) 55API units
9 .The response of the gamma ray tool is unaffected by the presence of hydrocarbons.
a) True
b) False
c) It depends on the depth of invasion
10 .You are working with porosity logs the header indicates that the logs are recorded on a “limestone matrix” and fluid density is 1.0 g/cc. The density porosity reading is 15% and the neutron porosity reading is 8%. What is the most likely lithology of the formation ?
a) Sandstone ,
b) Limestone,
c) Shale ,
d) Dolomite.
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