Clay Application as Oil Demulsifer Case Study: Sulursari Village, Gabus Subdistrict, Grobogan Regency, Jawa Tengah Province, Indonesia
Putra, Ksatria Y.¹; Hatmanda, Mahajana¹; Adhiansyah, Erfandi²
¹Geological Engineering, Gadjah Mada University, Sleman, Indonesia.
²Geophysics, Gadjah Mada University, Sleman, Indonesia.
Emulsion is a colloidal system which is dispersion phase of that can be either liquid, solid and gas. At petroleum reservoir, emultion usually happen in dispersed phase liquid, which is between oil itself with formation water contained in the reservoir. Emulsion formation problems in the reservoir is also found in the study area at Sulursari Village old oil field, where this formation of emulsion affects the production activities in one of the existing wells.The formation from emulsions of oil in the reservoir, as happened at the sites is quite an obstacle in the various phases of activity in oil and gas industry, from production, storage, until the distillation process.To overcome the problem of this emulsion, several kinds of methods have been widely used. Several chemicals commonly used to break oil emulsions which this is TOMAC, heksilamina, dioktilamina, methyl methacrylate, butyl acrylate and ASID- acrylic with solving efficiency ranging from 50% to 60%. One of the method which is to be appointed in this paper is the utilization of clay minerals ( especially smectite) as a demulsifier (case study : Sulursari Village, Gabus subdistrict, Grobogan regency, Jawa Tengah Province, Indonesia.) with an excess of raw material prices are much cheaper, readily available, especially in Indonesia and the level of efficiency that is expected to equal the solver emulsion (demulsifier) are commonly used. By doing a simple laboratory experiment through blending between the emulsion oil with clay from the site of observation, obtained the oil that has been separated from the water formation From these experimental results, it appears that clay minerals can help the process of separating crude oil, so in this case acts as a demulsifier with a quite satisfactory level of efficiency. In this case, the polarity of clay is the greatest role in the process of breaking the chain between oil and water so that they can be separated from each other.
AAPG Search and Discovery Article #90155©2012 AAPG International Conference & Exhibition, Singapore, 16-19 September 2012