JNTU B.Tech III PETROLEUM RESERVOIR ENGINEERING Previous Question Paper (May - 2019 - R15)

Write in short about porosity and its types.

What are the parameters required for calculation of oil in place, give a brief description?

Write the principle for material balance for oil reservoir.

Explain is Darcy’s Law for linear system incompressible fluid.

How many types of flow can be encountered in a reservoir?

What do you understand by PI and IPR, explain with diagram?

How many types of solution are there for transient state equation?

What is a buildup test and its application in reservoir engineering?

What is non Darcy flow factor and where it is encountered?

What do you understand by water influx and its effects on reservoirs?

Write about the concept of reserve estimation and factors affecting it.

Write the equation for Volume in place and explain each parameter involved in detail?

An oil reservoir exist at its bubble point pressure of 3000 psia and temperature of 160°F. The oil has an API gravity of 42° and gas oil ratio of 600 scf/stb. The Specific gravity of the solution gas is 0.65. The following additional data are also available:

Reservoir Area = 640 acres

Average Thickness = 10 ft

Connate water saturation = 0.25

Effective porosity = 15%

Oil Volume formation factor (β₀)= 1.306 bbl/STB

Calculate the Initial oil in place in STB?

What are the PVT techniques involved in reservoir engineering and there applications?

Explain about the different reservoir rock and reservoir fluid properties.

A brine is used to measure the absolute permeability of a core plug. The rock sample is 4 cm long and 3 cm² in cross section. The brine has a viscosity of 1.0 cp and is flowing a constant rate of 0.5 cm³/sec under a 2.0 atm pressure differential. Calculate the absolute permeability?

Define and derive Darcy’s law and explain how it is used in reservoir engineering?

Deduce the material balance equation for oil reservoir?

Write about the straight line solution method to the material balance.

Explain about different types of drive mechanism of reservoir with diagrams.

Derive the material balance for Gas reservoirs with no water drive.

How many types of fluid flow regimes and types of fluid in reservoir?

Derive the equation for Radial system semi steady state flow.

Derive the equation for Radial system steady state flow on incompressible fluid.

An oil well is producing from an under saturated reservoir that is characterized by bubble point pressure of 2130 psig. The current average reservoir pressure is 3000 psig. Available flow test data shows that the well produced 250 STB/day at a stabilized p_wf of 2500 psig. Construct the IPR?

Calculate the skin factor resulting from the invasion of the drilling fluid to a radius of 2 feet. The permeability of the skin zone is estimated at 20 md as compared with the unaffected formation permeability of 60 md. The wellbore radius is 0.25 ft?

Explain the principle of superposition in well testing and drive the wellbore pressure equation for buildup test?

Explain the drawdown test analysis and also explain multi rate drawdown test.

Explain pressure build up analysis.

Derive the expression for non-Darcy flow regime.

Explain the unsteady state water influx theory.

Explain the solution for the radial flow of real gas.

Explain the approximate water influx theory.