Inderscience Publishers

Experimental investigation of sand consolidation techniques: resin injection and in-situ combustion

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This paper demonstrates two sand control techniques that could overcome the technical limitations associated with the sand production phenomenon in Ahwaz oil field (in the southwest of Iran). The techniques are based on the consolidation process with resins and the oxidation of hydrocarbons. In this work, unconsolidated sand packed models of cylindrical geometry were utilised in order to perform a series of experiments during which various controlling parameters (compressive strength, permeability, and porosity) were investigated. The results showed that for consolidation process with resins, it was possible to produce consolidated sand samples with compressive strength between 740 and 1,330 psi; permeability between 3,000 and 4,100 md, and porosity between 27% and 34.5%. In contrast, for in-situ combustion technique, compressive strength between 580 and 1,040 psi, permeability between 3,100 and 5,100 md, and porosity between 23% and 42% were obtained. At the end, it is concluded that the consolidation process with epoxy resin (ML 503) is the most efficient method according to National Iranian South Oil Company standards. However, for field scale applications an economical proof is needed.

Keywords: sand consolidation, resin, in situ combustion, permeability, porosity, compressive strength

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