Monthly Archive for November, 2011

Reservoir Engineering Interview questions 3

19.    In a preferentially water wet reservoir, is the tendency for the connate water saturation to be larger or smaller than in an oil wet system?
20.    If a core sample has a measured air brine capillary pressure of 3 psi at a 50% water saturation , at what height above the OWC would you expect to see a 50% water saturation in a oil wet system with water of 1.0% specific gravity and oil of 0.75 specific gravity ( at reservoir conditions)?
21.    Please state several implications (in both a reservoir and a business sense) of a low Krw endpoint or Sor on a water flood project economic value?
22.    Which rock property is harder to average, Porosity or Permeability?
23.    Which rock property is harder to upscale for simulation, porosity, permeability , or a relative permeability?
24.    Describe the difference between a dry gas and a wet gas production?
25.    How does one calculate the pseudo crtical pressure of a reservoir gas?

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Reservoir Engineering Interview question 2

Reservoir Engineering mock interview questions continues

11.    What is the difference between Steady state and pseudo steady state?
12.    Why is the transient pressure regime called “Infinite acting”?
13.    Which drainage shape stays in transient flow longer, A circle or a 2:1 rectangle?
14.    Under what conditions may it be appropriate to solve gas well testing equation using pressure squared method?
15.     What group of variable controls the speed at which a pressure transient will move through the reservoir?
16.    What type of pressure transient tests should you run if you want to determine reservoir permeability and well skin?
17.    What is the purpose of a reservoir limits tests? What are the implications of terminating the test early?

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Reservoir Engineering Interview questions 1

Not so long ago I was preparing for an interview for the post of a Reservoir Engineer. Read job description here

I could not find a single  page on the web where I could get any proper mock interview questions for this profession. So I decided to make one.

Please read on for mock interview questions.

Answers will be given in the next blog post, All this material has been gathered from books journals and of course the internet

1.    What is the difference between primary porosity and secondary porosity?
2.    Which rock property is a function of pressure – porosity or pressure?
3.    What is the equation for pre volume compressibility?
4.    What is the difference between pore volume compressibility, rock compressibility and formation compressibility?
5.    Why do we run more than one porosity log in an well?
6.    Name two methods of estimating reservoir permeability?
7.    When might the measured permeability be an untrue estimate of formation compressibility?
8.    What is a primary use of a capillary pressure data?
9.    Describe what a capillary drainage process is and provide two examples?
10.    For a given capillary pressure curve , is the transition zone height the same for a gas water system and an oil water system? Explain?

 

The answers will be given in the next blog post.

I will be adding more questions in the near future. So please Ctrl+D this blog

Please feel free to add more questions in the comments section

I will also be putting up some  Well Testing questions in the near future.

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