The Experiment of Wax Precipitation from Oil-Gas Condensate System in Porous Media

Abstract

Abstract: The mechanism of wax precipitation from oil-gas condensate system in porous media is researched by realistic model experiment with high temperature and pressure. It is shown that there are different characteristics of wax precipitation in the processes of isobaric cooling and isothermal decompression, respectively. A thermodynamic mathematic model was presented to simulate three-phase equilibrium of gas, liquid and solid based on theory of phase equilibrium and principle of interfacial chemistry. The case study using this thermodynamic mathematic model is in accordance with the lab findings, by which the reason for different characteristics of wax precipitation in the processes of isobaric cooling and isothermal decompression can be explained rationally.

Key words: porous media, solid, thermodynamics, experimental data, mechanism

CLC Number:

TE124

YAN Liang-dong, ZHU Wei-yao, SONG Hong-qing. The Experiment of Wax Precipitation from Oil-Gas Condensate System in Porous Media[J]. Xinjiang Petroleum Geology, 2009, 30(6): 761-763.

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The Experiment of Wax Precipitation from Oil-Gas Condensate System in Porous Media

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