What is material balance equation?
The material-balance equation is the simplest expression of the conservation of mass in a reservoir. The equation mathematically defines the different producing mechanisms and effectively relates the reservoir fluid and rock expansion to the subsequent fluid withdrawal.
What is material balance in thermodynamics?
Material balances are typically used to describe how much material is available for each species, using variables such as the numbers of moles or the concentrations, while a heat balance is used to describe how much thermal energy is available, using variables such as the heat or the temperature.
What are the types of material balance?
9.4. Two types of material balance errors are considered: local and global. Local material balance error is the error in the material balance calculation for each gridblock over a time step. The sum of all local material balance errors gives the global material balance error.
What is meant by material balance?
A mass balance, also called a material balance, is an application of conservation of mass to the analysis of physical systems. By accounting for material entering and leaving a system, mass flows can be identified which might have been unknown, or difficult to measure without this technique.
Why material balance is important?
Material balances are important first step when designing a new process or analyzing an existing one. Thus, material balances are often compared to the balancing of current accounts. They are used in industry to calculate mass flow rates of different streams entering or leaving chemical or physical processes.
What is material balance in chemical engineering?
The material balance is the fundamental tool of chemical engineering. It is the basis for the analysis and design of chemical processes. The material balance is the chemical engineer’s tool for keeping track of what is entering and leaving the process as well as what goes on internally.
What is material balance analysis?
Material balance analysis is an interpretation method used to determine original fluids-in-place (OFIP) based on production and static pressure data. The general material balance equation relates the original oil, gas, and water in the reservoir to production volumes and current pressure conditions / fluid properties.
What is the importance of material balance?
Material and Energy balances are important, since they make it possible to identify and quanti- fy previously unknown losses and emissions. These balances are also useful for monitoring the improvements made in an ongoing project, while evaluating cost benefits.
What is the objective of material balance?
The basic purpose of material and energy balance is • to quantify all the material, energy and waste streams in a process or a system. to find out the difference between calculated/designed values and measured/actual values thereby making it possible to identify previously unknown losses and emissions.
What is material balance and energy balance?
A material and energy balance is essentially a quantitative account of the redistribution of material and/or energy that occurs when anything happens. This basic tool of process engineering can be used to solve many practical problems.
How is the material balance equation used in Chemical Engineering?
Since the process is at steady-state condition and no chemical reaction is involved, the material balance equation becomes Input = Output This balance equation can be applied to: 1. The total mass entering and leaving the process 2. Mass of individual component entering and leaving the process.
Who is the author of the material balance equation?
Tarek Ahmed, D. Nathan Meehan, in Advanced Reservoir Management and Engineering (Second Edition), 2012 The material balance equation (MBE) has long been recognized as one of the basic tools of reservoir engineers for interpreting and predicting reservoir performance.
How is a material balance used in industry?
A material balance is an accounting for material. Thus, material balances are often compared to the balancing of current accounts. They are used in industry to calculate mass flow rates of different streams entering or leaving chemical or physical processes.
How to calculate number of independent material balance equations?
Number of Independent Material Balance Equations in Process without Chemical Reaction For processes with no chemical reaction, N m= N i where N m= number of independent material balance equations. N i= total number of chemical species (or components) involved in the process. LECTURE 9.