Search

Browse

• Communities
• Authors
• Year
• Titles
• Subjects

My Space

• Login

Gas hydrate formation in oil/gas pipelines: computer implementation of hand calculation methods with MATLAB

Dimou Niki

Full record

---

Summary

The present diploma thesis aims at the development and assessment of a computer program, based on the MATLAB programming language, implementing the "hand calculation methods" for gas hydrate formation conditions in oil and gas pipelines. The hand calculation methods examined in this project are the "gas gravity method" and the "distribution coefficient method" or the "K-factor method". The computer program predicts the hydrate formation conditions, having as input data the composition (or the specific gravity) of the mixture and an operating condition (pressure or temperature). In the gas gravity method the available charts were interpolated and reproduced numerically and the solution was obtained on basis of the bisection method. For the K-factor method the Newton-Raphson method was employed to obtain the solution. The hydrate deposits in oil and gas pipelines are a common problem in the upstreaming, midstreaming, and downstreaming processes of the oil and gas industry. In the present diploma thesis, Fuel Gas and LPG (Liquefied Petroleum Gas) streams from MOTOR OIL (Hellas) Corinth Refineries S.A. were examined to determine the hydrate formation conditions in transport pipelines within the refinery. The results, which were compared with commercial software such as KBC’s Multiflash and CSMGem (CSM: Colorado School of Mines), showed that neither of the streams are at risk of forming solid hydrate crystals in the oil and gas pipelines.

Available Files

Services