COMBINATION OF NUCLEAR MAGNETIC RESONANCE AND DENSITY LOG FOR EVALUATION OF A GAS RESERVOIR IN SOUTH OF IRAN

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BAGHERI ALI MOHAMMAD; Mohammadnia Mohammad

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Seminar Paper

Paper Information

Seminar: NATIONAL CONFERENCE ON HYDROCARBON RESERVOIR ENGINEERING, SCIENCE AND RELATED INDUSTRIES
Year:2013 | Issue:2

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Title

COMBINATION OF NUCLEAR MAGNETIC RESONANCE AND DENSITY LOG FOR EVALUATION OF A GAS RESERVOIR IN SOUTH OF IRAN

Author(s)

BAGHERI ALI MOHAMMAD | Mohammadnia Mohammad

Keywords

NMR

DMR

POROSITY

DENSITY

SIGNAL AMPLITUDE

T2 DISTRIBUTION

T1 POLARIZATION

Abstract

CONVENTIONAL LOG BASED RESERVOIR CHARACTERIZATION OF A GAS RESERVOIR IN THE KANGAN AND DALAN FORMATIONS HAVE RECENTLY BEEN IMPROVED BY THE APPLICATION OF THE NUCLEAR MAGNETIC RESONANCE (NMR) LOG.THE PROBLEM OF NMR MEASUREMENTS IN GAS RESERVOIRS IS THAT IN GAS-BEARING ZONES, TOTAL NMR POROSITIES READ MUCH LESS THAN DENSITY-DERIVED POROSITIES.POROSITY DERIVED FROM NMR ALONE SUFFERS FROM THE LOW HYDROGEN INDEX OF THE GAS AND THE LONG T1 POLARIZATION TIME OF THE GAS WHEN THE DATA IS ACQUIRED WITH INSUFFICIENT WAIT TIME.TO PROVIDE A ROBUST ESTIMATE OF POROSITY, A METHOD CALLED DENSITY-MAGNETIC RESONANCE (DMR) THAT COMBINES DENSITY POROSITY AND TOTAL NMR POROSITY WAS SUCCESSFULLY APPLIED TO THE 4 WELLS LOGGED WITH NMR.THE DMR TECHNIQUE WAS ABLE TO PRODUCE A VERY GOOD POROSITY ESTIMATION COMPARABLE TO THAT MEASURED ON CONVENTIONAL CORES. IMPROVED POROSITY CALCULATION LEAD TO BETTER CORE INDEPENDENT PERMEABILITY ESTIMATION ON THE WELLS LOGGED WITH NMR. PERMEABILITY DERIVED FROM NMR WAS INVOLVED TO AN ELECTROFACIES MODELING AS AN ASSOCIATED LOG TO PREDICT FACIES BASE PERMEABILITY ON 20 WELLS WITHOUT NMR LOG.TO TEST THE PERMEABILITY PREDICTION, ESTIMATED PERMEABILITY WAS COMPARED WITH CORE DERIVED PERMEABILITY ON 5 CORED WELLS TO SEE HOW WELL, ESTIMATED PERMEABILITY FITTED THE ACTUAL CORE PERMEABILITY.

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APA: Copy

BAGHERI, ALI MOHAMMAD, & Mohammadnia, Mohammad. (2013). COMBINATION OF NUCLEAR MAGNETIC RESONANCE AND DENSITY LOG FOR EVALUATION OF A GAS RESERVOIR IN SOUTH OF IRAN. NATIONAL CONFERENCE ON HYDROCARBON RESERVOIR ENGINEERING, SCIENCE AND RELATED INDUSTRIES. SID. https://sid.ir/paper/919725/en

Vancouver: Copy

BAGHERI ALI MOHAMMAD, Mohammadnia Mohammad. COMBINATION OF NUCLEAR MAGNETIC RESONANCE AND DENSITY LOG FOR EVALUATION OF A GAS RESERVOIR IN SOUTH OF IRAN. 2013. Available from: https://sid.ir/paper/919725/en

IEEE: Copy

ALI MOHAMMAD BAGHERI, and Mohammad Mohammadnia, “COMBINATION OF NUCLEAR MAGNETIC RESONANCE AND DENSITY LOG FOR EVALUATION OF A GAS RESERVOIR IN SOUTH OF IRAN,” presented at the NATIONAL CONFERENCE ON HYDROCARBON RESERVOIR ENGINEERING, SCIENCE AND RELATED INDUSTRIES. 2013, [Online]. Available: https://sid.ir/paper/919725/en

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