Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
ANALYSIS OF GAS HYDRATES FORMATION IN A PRESSURE CELL
Submission Author:
Gustavo Alonso Barrientos Sandoval , RJ
Co-Authors:
Rafhael M Andrade, Edson Soares, Roney Thompson, Flavio Barboza Campos, Adriana Teixeira
Presenter: Gustavo Alonso Barrientos Sandoval
doi://10.26678/ABCM.ENCIT2016.CIT2016-0703
Abstract
The hydrate formation and paraffin deposition in pipes are two huge problems related to oil recovery in deep and ultra-deep water. Natural gas hydrates are compounds of small gas molecules and water and they are formed when the constituents come into contact with each other at low temperature and high pressure. In a similar way, the paraffin deposition is formed during normal operational conditions, due to heat transfer from the oil to the environment in the oil production process. The analysis of the phenomenon is extremely complex, especially when the oil temperature reaches values below the gelled temperature (GT), because the oil losses its Newtonian character and assumes an elasto-visco-plastic-thixotropic behaviour. In fact, such a phenomenon is one of the most problematic in the petroleum industry. A reliable measurement of yield stress is very important and difficult, since this value is highly influenced by shear and temperature history and also the composition of the waxy crude oils. The objective of this work is characterize an oil using a pressure cell, which enable us to take into account some rheological properties under high pressures, enough for the hydrates formation.
Keywords
Gas Hydrates, Waxy Crude Oil, Pressure cell
