JNTU B.Tech III PETROLEUM RESERVOIR ENGINEERING Previous Question Paper (December - 2018 - R15)

What is effective porosity?

What is saturation?

Write short note on gas cap drive.

Write down assumptions considered in material balance.

What is stabilized flow?

Write short note on associated well.

What is transient flow?

What is the effect of build up test in the wellbore?

What is non associated well?

What do you mean by infinite reservoir?

What is ultimate recovery? Write its formula and explain.

What is the gas pressure gradient in the reservoir, at 2000 psia, 1800 F and density of gas at standard condition 0.0524 lb/cu.ft (Z = 0.865)?

How do we find the gas initially in place in reservoir? Write its formula and Explain.

Calculate the density of gas at standard condition when gas gravity is 0.687.

Write short note on depletion drive mechanism and explain its type.

Derive material balance equation when evolved gas is neglected.

Write the relation of depletion drive index when all other drive is absent in material balance equation.

Derive an expression for Darcy law of radial fluid flow in the reservoirs.

Derive relation for material balance when depletion drive index is absent.

Derive relation for the basic differential equation of radial flow in porous medium.

What is the equivalent permeability of four beds in series, having equal formation thicknesses under the following condition for a linear system if the radius of the penetrating well bore is 6 in. and the radius of effective drainage is 2,000 ft.

Derive equation for linear and radial system for case transient flow in reservoir.

Assuming a steady-state laminar flow, calculate the permeability from the following measurement made on core sample by using air. Flow rate = 2 cm3/sec, T = 650 F upstream pressure = 2 atm, downstream pressure = 1 atm, A = 2 cm2, L = 3 cm, viscosity = 0.018 cp.

Explain pressure build up test in the well by using neat diagram.

Derive basic equation for the radial flow of single phase fluid in porous media.

Write down the conditions for constant terminal rate solution for transient flow.

Write short note on multi rate drawdown testing by using neat diagram.

If the aquifer properties are as follows h = 50 ft, μ = 0.4 cp, φ = 0.25, cw = 3.0×10-6/psi, k = 50 mD, cf = 6.0×10-6/psi, re = 15000, ro = 5000 and f = 0.222, Calculate the water influx at times t = 0.5, 1, 1.5, 2 and 3 years after an instantaneous pressure drop of Δp = 100 psi, at the oil water contact, at time t=0.

Write short note on the approximate water influx theory of Fetkovitch for finite aquifers.

Drive an expression of diffusivity equation for gas flow.

When does non-Darcy component not exist in equation written below?