Inflow Performance Relationship Quiz
16 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the Productivity Index (PI) in petroleum engineering?

  • The ratio of gas flow rate to pressure drawdown
  • The ratio of total liquid flow rate to well depth
  • The ratio of total liquid flow rate to pressure drawdown (correct)
  • The ratio of gas flow rate to well depth

    • What does the Productivity Index (PI) indicate?

  • The depth at which the fluid can be extracted
  • The temperature required to produce a barrel of fluid
  • The speed at which the fluid can be extracted
  • The amount of energy (pressure) required to produce a barrel of fluid (correct)

    • What does the Inflow Performance Relationship (IPR) measure?

  • The temperature of the well
  • The ability of the well to produce fluids (correct)
  • The speed of fluid extraction
  • The depth of the well

    • In which units is the Productivity Index (PI) typically presented?

    <p>STB/D/PSI</p> Signup and view all the answers

    What is the main purpose of studying the Inflow Performance Relationship (IPR)?

    <p>To understand the ability of the well to produce fluids</p> Signup and view all the answers

    What does the Inflow Performance Relationship Test aim to determine?

    <p>Flow characteristics of the well</p> Signup and view all the answers

    What is the formula for drawdown?

    <p>Drawdown = Ps - Pwf</p> Signup and view all the answers

    When is the productivity index a valid measure of the well productivity potential?

    <p>At pseudo steady state conditions</p> Signup and view all the answers

    What does the productivity index help in predicting?

    <p>Future well performance</p> Signup and view all the answers

    What does Eq. (1.4) suggest about the relationship between q and ∆p?

    <p>The relationship is directly proportional</p> Signup and view all the answers

    What is the specific productivity index (Js) defined as?

    <p>Js = J / thickness of the well</p> Signup and view all the answers

    What does the plot Pwf against q show?

    <p>A linear relationship with slope -1/J</p> Signup and view all the answers

    When should a well be allowed to flow at a constant flow rate to accurately measure the productivity index?

    <p>After reaching pseudo steady state conditions</p> Signup and view all the answers

    What does an unexpected decline in measured productivity index indicate?

    <p>Reservoir damage</p> Signup and view all the answers

    What is the constant of proportionality in the relationship between inflow into a well and pressure drawdown?

    <p>-1/J</p> Signup and view all the answers

    What happens during the procedure of measuring Productivity Index?

    <p>The well is allowed to produce at a constant flow rate and stabilized bottom-hole flow pressure.</p> Signup and view all the answers

    Study Notes

    Productivity Index (PI) in Petroleum Engineering

    • The Productivity Index (PI) is a measure of the ability of a well to produce hydrocarbons.

    What the Productivity Index (PI) Indicates

    • The Productivity Index (PI) indicates the well's potential to produce oil or gas, and its ability to flow fluids from the reservoir to the surface.

    Inflow Performance Relationship (IPR)

    • The Inflow Performance Relationship (IPR) measures the relationship between the flow rate of a well and the flowing bottom-hole pressure.

    Units of Productivity Index (PI)

    • The Productivity Index (PI) is typically presented in units of stb/day/psi or m³/day/kPa.

    Purpose of Studying Inflow Performance Relationship (IPR)

    • The main purpose of studying the Inflow Performance Relationship (IPR) is to understand the behavior of a well and optimize its production.

    Inflow Performance Relationship Test

    • The Inflow Performance Relationship Test aims to determine the well's potential to produce oil or gas, and its ability to flow fluids from the reservoir to the surface.

    Formula for Drawdown

    • The formula for drawdown is ∆p = p_i - p_wf, where p_i is the initial reservoir pressure and p_wf is the flowing bottom-hole pressure.

    Validity of Productivity Index

    • The productivity index is a valid measure of the well productivity potential when the flow rate is constant and the reservoir pressure is stable.

    Predictive Ability of Productivity Index

    • The productivity index helps in predicting the well's potential to produce oil or gas under different operating conditions.

    Relationship between q and ∆p

    • Eq.(1.4) suggests that the flow rate (q) is directly proportional to the pressure drawdown (∆p), and the constant of proportionality is the Productivity Index (PI).

    Specific Productivity Index (Js)

    • The specific productivity index (Js) is defined as the ratio of the Productivity Index (PI) to the viscosity of the fluid.

    Plot of Pwf against q

    • The plot of Pwf against q shows the relationship between the flowing bottom-hole pressure and the flow rate, which is used to determine the Inflow Performance Relationship (IPR).

    Measuring Productivity Index

    • A well should be allowed to flow at a constant flow rate to accurately measure the productivity index, and the pressure drawdown should be measured at the same time.

    Unexpected Decline in Productivity Index

    • An unexpected decline in measured productivity index indicates a potential problem in the well, such as a change in the reservoir pressure or a decrease in the permeability of the reservoir.

    Constant of Proportionality

    • The constant of proportionality in the relationship between inflow into a well and pressure drawdown is the Productivity Index (PI).

    Procedure of Measuring Productivity Index

    • During the procedure of measuring the Productivity Index, the flow rate is varied and the corresponding pressure drawdown is measured, which allows the calculation of the PI.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge of the Inflow Performance Relationship in petroleum engineering with this quiz. Explore the productivity index, IPR features, testing, and the importance of understanding IPR through case studies.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser