Core Lab Analysis Manual

January, 2003

EXPERIMENTAL RESERVOIR ENGINEERING LABORATORY WORK BOOK

O. Torsæter M. Abtahi

Department of Petroleum engineering and Applied Geophysics Norwegian University of Science and Technology

January, 2003

i

PREFACE

This book is intended primarily as a text in the course SIG4015 Reservoir Property Determination by Core Analysis and Well Testing at the NorwegianUniversity of Science and Technology. Part of this course introduces the basic laboratory equipment and procedures used in core analysis and the theoretical aspects of the parameters. The book also includes detailed description of laboratory exercises suitable for student work. Appreciation is expressed to the Dr.ing. students Medad Tweheyo Twimukye and Hoang Minh Hai for their contributionsto this work. Ole Torsæter Manoochehr Abtahi

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CONTENTS
PREFACE...........................................................................................................................ii CONTENTS ......................................................................................................................iii 1.Introduction..............................................................................................................1 2. Cleaning And Saturation Determination...............................................................3 2.1 Definitions ..............................................................................................................3 2.2 Measurement Methods...........................................................................................3
2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.2.6 2.2.7 Direct Injection of Solvent.......................................................................................... 3 Centrifuge Flushing .................................................................................................... 4 Gas Driven Solvent Extraction................................................................................... 4 Soxhlet Extraction ...................................................................................................... 4 Dean-Stark Distillation-Extraction ............................................................................. 4 Vacuum Distillation.................................................................................................... 5Summary..................................................................................................................... 6 Saturation Determination, Dean-Stark Distillation Method (Experiment 1) .............. 7

2.3 3.

Experiments ............................................................................................................7

2.3.1

Liquid Density..........................................................................................................9 3.1 Definitions ..............................................................................................................9 3.2 Measurement of Density .........................................................................................9 3.3 Experiments..........................................................................................................10
3.3.1 Fluid density using the Pycnometer method (Experiment 2) ................................... 10

4.

Viscosity ..................................................................................................................12 4.1 Definitions............................................................................................................12 4.2 Effect of Pressure and Temperature on Viscosity ................................................13 4.3 Methods for Measuring Viscosity .........................................................................13
4.3.1 4.3.2 4.3.3 Capillary Type Viscometer....................................................................................... 13 Falling Ball...