JNTU
JNTU B.Tech III WELL LOGGING Previous Question Paper (May/June - 2019 - R15)
Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
Define well logging.
Answer
Well logging is the process of recording measurements of physical, chemical, or electrical properties of the rock formations penetrated by a borehole as a function of depth, providing a continuous record used to evaluate subsurface geological formations.
Write the principle of SP log.
Answer
The Spontaneous Potential (SP) log is based on the measurement of naturally occurring electrical potentials generated by electrochemical and electrokinetic activities at the interface between the borehole fluid (mud filtrate) and the formation water in permeable beds.
Write the conventional resistivity tools.
Answer
Sign in to view the complete answer paper.
Write the principle of induction log.
Answer
Sign in to view the complete answer paper.
Define secondary porosity.
Answer
Sign in to view the complete answer paper.
Write the principle of sonic log.
Answer
Sign in to view the complete answer paper.
Which types of logs are used in production logging?
Answer
Sign in to view the complete answer paper.
Listed cased hole logs?
Answer
Sign in to view the complete answer paper.
Define porosity and permeability of rock.
Answer
Sign in to view the complete answer paper.
Give the list of logs used in well logging.
Answer
Sign in to view the complete answer paper.
Part B
Explain principle and application of natural spectral gamma ray log.
Answer
Sign in to view the complete answer paper.
Describe principle of radioactivity. How to determination of shalyness of formation?
Answer
Sign in to view the complete answer paper.
Illustrate the principle and uses of caliper tool.
Answer
Sign in to view the complete answer paper.
Write the application of SP log. How to calculate salinity of formation water with the help of SP log?
Answer
Sign in to view the complete answer paper.
What are the various factors which may result into higher response on resistivity log?
Answer
Sign in to view the complete answer paper.
Write the conventional and focused micro resistivity logs and their applications.
Answer
Sign in to view the complete answer paper.
Write the advantages of focused resistivity tools over conventional resistivity tools.
Answer
Sign in to view the complete answer paper.
How to determine the true resistivity of formation and resistivity index by Archie’s equation?
Answer
Sign in to view the complete answer paper.
Explain the principle and application of neutron tool. How to determine porosity by neutron log?
Answer
Sign in to view the complete answer paper.
What is basic difference in density log, neutron log and sonic log?
Answer
Sign in to view the complete answer paper.
What do you understand by bore hole compensation?
Answer
Sign in to view the complete answer paper.
Listed the methods to determine primary and secondary porosity. Explain one of them.
Answer
Sign in to view the complete answer paper.
What do you understand by free point locater and plug setting in cased hole logging?
Answer
Sign in to view the complete answer paper.
Write the principle and application of cement bond log.
Answer
Sign in to view the complete answer paper.
Write the short notes on fluid density log, temperature log, and flow meter log.
Answer
Sign in to view the complete answer paper.
Write the short notes on dip meter log, cased hole resistivity logs and nuclear magnetic resonance log.
Answer
Sign in to view the complete answer paper.
Write a short note on quick look interpretation and listed the methods used in quick look interpretation.
Answer
Sign in to view the complete answer paper.
How to determine hydrocarbon reserve estimate with the help of logging plots?
Answer
Sign in to view the complete answer paper.
Discuss the merits and demerits of direct method of formation evaluation over the indirect.
Answer
Sign in to view the complete answer paper.
Write the direct methods of logging and explain one of them.
Answer
Sign in to view the complete answer paper.