COMPUTATIONAL MODELING OF NATURAL GAS PRODUCTION FROM HYDRATE DISSOCIATION

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AHMADI GOODARZ

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Seminar Paper

Paper Information

Seminar: NATIONAL IRANIAN CONFERENCE ON GAS HYDRATE (NICGH)
Year:2013 | Issue:2

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Title

COMPUTATIONAL MODELING OF NATURAL GAS PRODUCTION FROM HYDRATE DISSOCIATION

Author(s)

AHMADI GOODARZ | Issue Writer Certificate

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Abstract

THIS PAPER PROVIDES AN OVERVIEW OF COMPUTATIONAL MODELING OF HYDRATE DISSOCIATION. A SIMPLIFIED AXISYMMETRIC MODEL FOR NATURAL GAS PRODUCTION FROM THE DISSOCIATION OF METHANE HYDRATE IN A CONFINED RESERVOIR BY A DEPRESSURIZING WELL WAS FIRST DESCRIBED. DURING THE HYDRATE DISSOCIATION, THE HEAT AND MASS TRANSFER IN THE RESERVOIR WERE ANALYZED, ASSUMING A SHARP DISSOCIATION FRONT. THE SYSTEM OF GOVERNING EQUATIONS WAS SOLVED BY A FINITE DIFFERENCE SCHEME, AND THE DISTRIBUTIONS OF TEMPERATURE AND PRESSURE IN THE RESERVOIR, AS WELL AS THE NATURAL GAS PRODUCTION FROM THE WELL WERE EVALUATED. THE NUMERICAL RESULTS WERE COMPARED WITH THOSE OBTAINED BY THE LINEARIZATION METHOD.HYDRATE DISSOCIATION IN A POROUS SANDSTONE CORE WAS THEN STUDIED USING A KINETIC MODEL. THE ANSYS-FLUENT CODE WAS USED FOR ANALYZING HYDRATE DISSOCIATION IN AN AXISYMMETRIC CORE. WHEN THE CORE WAS OPENED EXPOSING THE CORE TO LOW PRESSURE, THE HYDRATE IN THE CORE DISSOCIATES AND THE METHANE GAS AND LIQUID WATER BEGIN TO FLOW IN THE PORES. A USERS' DEFINED FUNCTION (UDF) FOR ANALYZING HYDRATE DISSOCIATION WAS DEVELOPED AND INCLUDED IN THE FLUENT CODE. THE NEW UDF USED THE KIM-BISHNOI KINETIC MODEL FOR HYDRATE DISSOCIATION. VARIATIONS OF RELATIVE PERMEABILITY OF THE CORE WERE INCLUDED IN THE MODEL. SAMPLE SIMULATION RESULTS WERE PRESENTED AND DISCUSSED.

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APA: Copy

AHMADI, GOODARZ. (2013). COMPUTATIONAL MODELING OF NATURAL GAS PRODUCTION FROM HYDRATE DISSOCIATION. NATIONAL IRANIAN CONFERENCE ON GAS HYDRATE (NICGH). SID. https://sid.ir/paper/908697/en

Vancouver: Copy

AHMADI GOODARZ. COMPUTATIONAL MODELING OF NATURAL GAS PRODUCTION FROM HYDRATE DISSOCIATION. 2013. Available from: https://sid.ir/paper/908697/en

IEEE: Copy

GOODARZ AHMADI, “COMPUTATIONAL MODELING OF NATURAL GAS PRODUCTION FROM HYDRATE DISSOCIATION,” presented at the NATIONAL IRANIAN CONFERENCE ON GAS HYDRATE (NICGH). 2013, [Online]. Available: https://sid.ir/paper/908697/en

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