The company is trying to develop an estimation tool
in order to predict pressure and temperature profiles of mud drilling
fluid in the wellbore.This study was proposed by the Fluid
Mechanic Institute of Toulouse (IMFT) and accepted by the company. This
project has been developed during the long project at the engineering
school ENSEEIHT during the 3rd year of studies for the Hydraulics and
Fluid Mechanics departement.
The main goal
of this project is to develop a simulation tool, through a computer
language as MATLAB, in order to simulate spatial and time variation of
temperature and pressure in a vertical wellbore. The simulation tool
should fit with company tools in order for them to control and
change the solved equations and to bring additional developpements.
This project has to be done before the 17th of March where an oral
presentation will be hold in front of a jury.
Drilling operation are deeper and deeper today in the oil
field, thermal and pressure issues need to be integrated in
drilling condition operations.
Mud drilling fluid is composed by oil, water and solid particles. It
has a non newtonian theology and an unique pressure, volume and
temperature condition. Problem is described by the following
- Power dissipation by the head of the
drill material: the bite and by important friction with the fluid.
Thermal transfers with the formation have to be
take into account because of it important time of operation
Wellbore will be considered as a counter coutant
exchanger for the thermal study.
- Temperature and Pressure equations
- Take counter courant geometry for thermal exchanges.
- Study of H-B rheological model for a non newtonian fluid.
- Numerical resolution through MATLAB using difference