Pune University BE (Petroleum Engineering) Petroleum Formation Evaluation Question Papers

B.E. (Petroleum Engineering) PETROLEUM FORMATION EVALUATION (2008 Pattern) (Sem. -1)

Time :3 Hours]                                                                                              [Max. Marks :100

Instructions to the candidates :-

1)            Answers to the questions of Section -I and Section – II should be written in separate answer books.

2)            Neat diagrams should be drawn wherever necessary.

3)            Assume additional data, if necessary.

SECTION – I

QI) Explain the logging environment in an open hole. How is wireline logging operation carried out? What are different effective depths of investigations of various logging tools? Give significance of these different depths of investigations.                                    [16]

OR

Q2) Why do we need different types of resistivity tools? Describe the principles and commonly used tools in electrical resistivity logging.                                                            [16]

Q3) Describe two important tools that are used to determine density. What will be the effects of (a) grain size, (b) barite, (c) depth of investigation, and (d) nature of source on nuclear density tools.                                                                                                                            [16]

OR

Q4) a) How is drilling time data collected? How is it useful in formation evaluation?     [10]

b) Write a note on sidewall coring and its applications.                                        [6]

Q5) Write notes on any three of the following :                                                  [18]

a)            Cement bond logs,

b)           Temperature log.

c)            Production log.

d)           Induction log.

e)            SP log.

f)             Caliper logs

SECTION – II

Q6) Explain the ‘quick – look’ log interpretation method in details.                         [16]

OR

Q7) Answer the following :                                                                                              [16]

a)            What are the different physical properties of clays that are relevant to log Interpretation?

b)            Explain the empirical relationship between water resistivity, porosity and water saturation.

c)            Explain important types of cross plots and their applications.

d)            What are the different methods of calculating reservoir parameters?

Q8) Explain the terms :

a)            Movable hydrocarbons, and

b)            Residual oil saturation.

How are they determined?

OR

Q9) Explain in details uses of logging surveys in various stages of petroleum exploration in an area.                                                                                                                    [16]

Q10)a) Write a detailed note on ‘Mud logging’.                                                 [10]

Give a quick look interpretation and geological interpretation of the logs given in the figure I. Assume logically significant additional data and state values clearly. Calculate Sw.        [8]

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