The material balance for simple depletion defines the relation between average reservoir pressure and (a) cumulative wellstream produced, (b) cumulative.

Slides:

Advertisements

Similar presentations

Gas Material Balance.

Advertisements

PVT Short Course for Cairo University SPE Student Chapter Ahmed Muaz Khalda Petroleum Company April 23, 2011.

Reservoir Rock and Fluid Properties

GasTank GasTank uses reservoir pressure and produced volumes of gas plus liquids from individual wells and determines the IGIP using volumetric, planimetric.

Reservoir performance prediction methods

Chapter 3.1 Weakly Nonlinear Wave Theory for Periodic Waves (Stokes Expansion)  Introduction The solution for Stokes waves is valid in deep or intermediate.

The Straight-Line Solution Method to the MBE

Material Balance for Oil Reservoirs

Reservoir Performance Curves

OilTank OilTank uses reservoir pressure and produced volumes of oil, water and gas from individual wells and determines the IOIP using volumetric and.

How do you simplify? Simple Complicated.

OIL RECOVERY MECHANISMS AND THE MATERIAL BALANCE EQUATION

Chapter 3 Material Balance Applied to Oil Reservoirs

Material Balance Equations Author: Jon Kleppe, NTNU Assistant producer: Vidar W. Moxness The Statfjord area in the North Sea. Source: Statoil.

18.3 Bose–Einstein Condensation

Case Study : History Matching of Well by Predictive Material Balance Term Project : Advanced Reservoir Engineering Presented By, Namit J Jaiswal B.E (Chemical)

Abnormally Pressured Gas Reservoirs

Day 1 Session 1 Day 1Introductions Economics and accounting Building a basic project cash flow Economic and risk indicators The.

Day1 – Part2 PVT measurements Fluid sampling methods

RESERVOIR ENGINEERING

MAE 5310: COMBUSTION FUNDAMENTALS

Gas Condensate PVT – What’s Really Important and Why?

Flow Regions. An accurate yet simple model of a gas condensate well undergoing depletion consists of three regions: Region 1: An inner near-wellbore region.

Water Drive Reservoir Performance Prediction

461 PE Reservoir Engineering

From: Heat Transfer During Compression and Expansion of Gas

Gas Properties & PVT Tests

5. WEIGHT VOLUME RELATIONSHIPS

Gas Condensate PVT A worked example to estimate

Gas Condensate PVT A worked example to estimate

Chapter 7 Entropy: A Measure of Disorder

Accurate fluid samples are needed to define fluids in place, especially condensate volume. Separator samples should almost always be used for gas condensate.

Relative Permeability Ratio in Region 1

e-notes (c) Curtis H. Whitson, Robert E. Mott

The material balance for simple depletion defines the relation between average reservoir pressure and (a) cumulative wellstream produced, (b) cumulative.

Gas Condensate PVT C7+ fraction in CVD Liquid saturation in CVD

CCE and CVD results The usual PVT measurements on gas condensates are

PURE SUBSTANCE Pure substance: A substance that has a fixed chemical composition throughout. Air is a mixture of several gases, but it is considered to.

Fluid Saturations Introduction

Gas Rate Equation General Equation Backpressure Equation

Relative Permeability Ratio in Region 1

The material balance for simple depletion defines the relation between average reservoir pressure and cumulative gas produced. The straight-line MB assumes.

Gas Condensate engineering  Dry Gas engineering except:

Introduction to Effective Permeability and Relative Permeability

e-notes (c) Curtis H. Whitson

Gas Condensate engineering  Dry Gas engineering except:

Unit 9 Outline Review.

Gas Condensate engineering  Dry Gas engineering except:

p = average reservoir pressure

p = average reservoir pressure

SPE Compositional Grading Theory and Practice

Chapter 3 Properties of Engineering Working Fluid

Draw the balance scales shown below on a blank page after Page 105.

CCE and CVD results The usual PVT measurements on gas condensates are

Gas Condensate Blockage

Section 2 - Chemical Calculations

SPE Compositional Grading Theory and Practice

Gas Condensate PVT C7+ fraction in CVD Liquid saturation in CVD

Gas Condensate Blockage

e-notes (c) Curtis H. Whitson

Liquid saturation in CVD

Section 2 - Chemical Calculations

e-notes (c) Curtis H. Whitson

e-notes (c) Curtis H. Whitson, Robert E. Mott

Gas Condensate PVT A worked example to estimate

Fluid samples from gas condensate wells are needed for two main reasons: To provide PVT data for developing a fluid model such as an EOS and/or black-oil.

e-notes (c) Curtis H. Whitson

Gas Rate Equation General Equation Backpressure Equation

Liquid saturation in CVD

For the 1D governing equation used in the reservoir

Presentation transcript:

The material balance for simple depletion defines the relation between average reservoir pressure and (a) cumulative wellstream produced, (b) cumulative surface gas produced, (c) cumulative condensate produced, and (d) producing condensate-gas ratio (CGR). CCE & CVD laboratory data provide the necessary information to define the material balance relations of a gas condensate reservoir. Assuming no water influx (i.e. zero water & rock compressibilities) the material balance relations are given directly by CCE data (above dewpoint) and CVD data (below dewpoint) — RFgw(pR), RFgd(pR), RFo(pR), CGR(pR); the CGR(pR) relation is independent of assumptions regarding water expansion & influx. When water expansion and/or aquifer encroachment are important, the material balance calculation is more complex and may require an iterative solution to find the fundamental relation between cumulative production (RF) and pressure. The “2-phase” Z-factor (Z2) is calculated assuming that the gas condensate reservoir depletes according to the material balance equation for a dry gas. 2-phase Z-factors should only be used in the traditional gas material balance equations, such as Havlena-Odeh, simplified Fetkovich, and pot-type aquifer.