1. Abstract
This thesis describes a systematic approach for the investigation and management of flow assurance
issues using laboratory experimental data, phase behaviour modelling, and simulation studies using
Equation of State (EOS) to model flow behaviour with in wellbore and reservoir for a single well in a
selected reservoir.
Various “Tuning” techniques and Regression Analysis were adopted to match the predicted data with
the experimental data using Peng Robertson (PR) and Peneloux Modified Soave Redlich Kwang
(MSRK) to reduce the error to match the experimental data. It was concluded that MSRK is producing
more accurate data that PR EOS.
OLGA was used to build a model to predict the productivity of the reservoir in the wellbore and the
flow behaviour and investigation of asphaltene flocculation and deposition within during production
using a thermodynamic model to develop Asphaltene Precipitation Phase Envelop (APE), a region that
solid asphaltene phase can coexist with liquid and gas phase within P-T diagram.
The results of the study concluded that the best technique for Asphaltene deposition problems is
Prevention, using a well-tuned thermodynamics model to identify ADE diagram. As part of reservoir
management and flow assurance we need to ensure that, during the production, P and T within the
reservoir and production facilities are located outside ADE diagram. This is possible only by using a
downhole submersible pumps in the well or application of EOR Techniques and pressure maintenance
within the reservoir. From the basic EOR screening technique has also have been performed for this
reservoir using the EORGUI program it was concluded that Gas injection for Pressure maintenance is
the recommended technique for this reservoir.
It is recommended to use various chemicals as inhibitors for further remedy technique for Asphaltene
deposition problems or as a solvent. For this purpose a number of various chemicals need to be screened
by performing reservoir conditions Coreflood techniques for investigation of the deposition processes
and formation damage studies are recommend as for the future studies research program.