17/21 77. In petroleum borehole logging the commonest natural radioactivity by v

Question

17/21 77. In petroleum borehole logging the commonest natural radioactivity by volume) is found in A. Limestone. B. Sandstone. C. Shale. D. Dolomite. 78. There are a number of parameters that are needed to determine the economic value and production possibilities of a formation, select the source that does not provide those parameters? A Wireline logging B. Mud logging c. Coring. D. Photo geology 79. How do you interpret coals and organic rich shales from gamma ray log? A. Coals have high gamma ray values, but organic rich shales have low B. Coals have low gamma ray values, but organic rich shales have high C. No remarkable contrast in gamma ray response between the two D. A & B values values. sediments 80 Mineral residue formed by accumulation of solid driling mud components on the wellbore walls is called A. Driling fluid B. Mud cake Mud filtrate Foam C. 81 Well Cuttings are A. Broken bits of rocks removed from borehole B. Useful to estab ish a lithologic record of a wel C. Produced by core diriling method. D A and B

Explanation / Answer

77. in petroleum borehole logging the commonest natural radioactivity found in

ans-- shale.

78. there are no of parameters that are needed to determine the economic value and production possibilities of a formation, select the source that does not provide those parameters

ans--wireline logging, mud logging and coring are the methods by which we determine the economic and production possibilities and their excavation condition of ore sources. on other hand , photogeology is the branch of geology under which we concerned with the identification of the geographical features.

79. how do you interpret coal and organic rich shales from gamma ray log.

ans-- shales emit more gamma rays than coal so we can identify easily with the gamma ray method so the right answer is

(b) coals have low gamma ray values but organic rich shales have high values.

80. mineral residue formed by accumulation of solid drilling mud components on the welbore walls is called.

and-- mud cake

81. well cuttings are-

ans- broken bits of rocks removed from borehole

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.