Application of geochemical technique to reduce allocation cost for commingled production wells from multiple reservoirs
This paper presents a technique using chromatographic fi ngerprint to back allocate commingled wells from multiple reservoirs, based on which oil samples were collected from some sedimentary basins in Vietnam and analysed by gas chromatography by the Vietnam Petroleum Institute (VPI) for their fi ngerprint and production allocation. Quantitative results were attained using the Geochemical Allocation computer programme which calculates relative contributions of end member oils based on chromatographic data. The geochemical allocation results compare very favourably with the metering data. This method allows reduction of the cost of field operation and eff ective support to the production management.
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