الفهرس | Only 14 pages are availabe for public view |
Abstract The wellbore deviated sections keep getting deeper and longer. This is because of most of oil and gas fields became fully developed due to development of the drilling technology. This will lead to reducing the number of drilling wells in the new projects. To achieve this goal friction in the wellbore represented in Torque and/or Drag may cause some inabilities including the tubular yield strength specifications and buckling tendencies. from the previous, oil and gas industry started to concentrate on torque and drag models to be able to drill complex. The purpose of this thesis is to make an assessment on the models’ abilities and inabilities. Also to find out how much the model can help for detecting the downhole problems. The author had used an Aadnoy’s based excel sheet done by TL Longbow Prime company. To study the model, different field cases have been applied with the friction model. Although the model has some inabilities discussed at the end of the thesis, the model has been shown a good indication of the downhole situation as in well Bijil-4. In the future, the model should be improved by including the tortuosity and micro tortuosity, hydraulic, Sag / Co-Sag and friction losses in the hoisting system effects. Also the model should be improved to more powerful software to allow adding these effects. |