الفهرس 
الغلافOnly 14 pages are availabe for public view
 |  | from | 174 |  |  |
| | | from | 174 | | |
Abstract
Density and viscosity are of the most impOliant governing physical parameters of the fluid flow, either in the porous media or in pipelines. Ideally, density and viscosity determined experimentally in the laboratory on actual fluid samples taken from the field under study. However, in the absence of experimentally measured data, especially during the prospecting phase, or when only invalid samples are available, one can resort to empirically derived PVT correlations. So, it is of great importance to use accurate correlations to calculate the crude oil density and viscosity at various reservoir conditions. During the last decades, several correlations have been developed to estimate density and viscosity of oil at different reservoir conditions. But, these correlations may be useful only in regional geological provinces and may not provide satisfactory results when applied to crude oils from other regions since oil properties differ according to its source , origin and core types .Also, crude oil composition is complex and often undefined.
The main objectives of this study are firstly, collecting experimental samples which involve one thousand (1000) fluid samples covering a wide range of crude oils ranging fi-om heavy to volatile oils. The fluid samples have been taken from (176) wells located in (75) fields operated by (16) companies. This data represent (15) productive zones of (123) reservoirs distributed along tlu’ee different regions of Egypt, namely, The Gulf of Suez (GOS), Western Desert (WD) and Sinai Secondly, conducting PVT analysis at reservoIr temperature and at different pressures to determine bubble point pressure (Pb) and gas In solution (RJ for the studied samples. Then measure oil density and oil viscosity at reservoir temperature and different pressures starting fi.-om above reservoir pressure to bubble point then to atmospheric pressure. Remove the liberated gases at each liberation stage. Then conduct composition analysis and molecular weight for residual oils.
Finally, based on Egyptian oil reservoirs data; new cOlTelations which relate density and viscosity of dead and live crude oil to PVT parameters such as reservoir pressure, reservoir temperature, API gravity, molecular weight of stock tank oil, saturation pressure and gas solubility. Validity and accuracy of these correlations have been confirmed by statistical and graphical error means analyses through comparing the obtained results of these correlations and other ones with experimental data for Egyptian oil samples. Checking results of these correlations show that correlations developed by this study revealed more accurate results than the literature correlations.