Pune University BE Petroleum Engineering Non Conventional Hydrocarbon Resources Question Papers

B.E. (Petroleum Engg.) NON CONVENTIONAL HYDROCARBON RESOURCES (2008 Pattern) (Elective – II) (Sem. – I)

Time :3 Hours]                                                                                              [Max. Marks :100

Instructions to the candidates :

1)            Answers to the two sections should be written in separate books.

2)             Neat diagrams should be drawn wherever necessary.

3)             Pigures to the right indicate marks.

4)            Assume additional data if necessary.

SECTION – I

QI) a) How is continuous accumulation system different than conventional system?       [10]

b) What are the petrophysical characteristics of a CBM reservoir? [5]

OR

Q2) Describe in brief technological challenges related to following areas in the production of heavy and extra heavy oil.                                                                                       [15]

a)            Geomechanics

b)            In situ viscosity and fluid characterization

c)            Flow assurance

d)            Downhole sampling.

Q3) a) Draw a schematic diagram of CBM reservoir to understand heterogeneity.

How does it different from Shale Gas?                                                        [10]

b) What is a shale gas? How is porosity on different scales visualized in shale?       [5]

OR

 

Q4) a) Describe with suitable diagram physical conditions that control presence of gas hydrate in an oceanic setting.                                                                                              [9]

b)            Write in brief factors controlling physical properties of gas hydrates. [6]

Q5) Answer any four from the following :                                                                    [20]

a)            Risked gas in place.

b)            Jarwie classification of Shale Gas based on ductility.

c)            Estimated Carbon Balances for a Fischer – Tropsch Dual-Feed Coal – and Biomass-to-Liquids Plant.

d)            Coal storage and transport mechanism.

e)            Relationship between the Sorption Isotherm Curve and Gas Content and the Influence on Recovery for CBM.

f)             Material balance equation for coalbed methane.

SECTION – II

Q6) a) Discuss use of Fork type dual lateral horizontal well to extract Heavy oil.

Draw a suitable sketch.                                                                                   [10]

b) Discuss chemo-poro-thermo-elastoplastic behavior of rock deformation in brief.           [5]

OR

Q7) a) Explain design of hydro fracturing job in detail.        [10]

b) A 400 acre lease is to be developed by 10 vertical wells. Calculate possible number of horizontal wells that will drain the lease effectively if 1000 ft, 2000 ft long horizontal wells are to be drilled in shale gas development field.                                [5]

Q8) a) Describe causes of formation damage and perforation damage. [10]

b)            An undersaturated coal system has the following reservoir parameters : Drainage area = 240 acres Thickness = 21 ft Porosity = 3%o Initial pressure = 750 psia

Desorption pressure = 450 psia Total compressibility = 16 X 10 s psi1.

Estimate the total volume of water that must be produced for the reservoir pressure to decline from initial pressure to desorption pressure. [5]

Q9) Answer any four from the following :                                                                    [20]

a)            Inhibition of hydrate formation

b)           Elastic properties of rocks

c)            Radioactive minerals in Shale

d)           Treatment for produced water

e)            In situ stress and importance of construction of Mohr’s diagram

f)             Capillary pressure and relative permeability relationship in conventional and low permeability reservoir.

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