Using geochemical method to determine the migration of formation water
Abstract
The paper presents a method using geochemical characteristics to evaluate and determine the migration of formation water. The chemical composition of water will provide the information about the source of salinity and the rock-water interaction of formation water during deposition and migration. The isotopic ratio of 87Sr/86Sr is also used to distinguish the sedimentary strata and the origin of formation water, based on which the migration of formation water will be evaluated. A case study with formation water from the basement reservoir of an oil field in Cuu Long basin has been conducted by application of the presented method, enabling prediction as well as better monitoring of water flooding in the field, which contributes to improving oil and gas production efficiency.
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