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oai:bura.brunel.ac.uk:2438/54582014-11-01T12:42:04Zcom_2438_58com_2438_23col_2438_4327col_2438_3672

Sermon, P Pilc, Jennifer 2011-06-30T13:19:23Z 2011-06-30T13:19:23Z 1988 http://bura.brunel.ac.uk/handle/2438/5458 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University. A large number of commercial and some novel Brunel synthesised surfactants have been studied with a view to their potential usefulness for enhanced oil recovery (EOR) application. Ethoxylated phenols and their sulphonated derivatives were given especially high priority. The surfactants were well-characterised in order to understand their EOR potential. High pressure liquid chromatography, mass spectrometry, Raman spectrometry, nuclear magnetic resonance spectrometry and other quantitative techniques were used. Aspects of their behaviour (as single components and as blends with co-surfactants and co-solvents) which have been considered in terms of: (i) phase behaviour with brine and hydrocarbons (ii) adsorption onto various oxide surfaces (iii) interfacial properties such as surface tension, wetting, contact angles and viscosity (iv) stability Three different blends using sulphonated surfactants which: (i) produce a microeinulsion which is stable to high salinity brines over a large temperature range (ii) exhibit low adsorption onto reservoir rock (iii) interfacial tension as low as 10-2mNm-1 have been subsequently optimised. Core flooding tests carried out under reservoir conditions produced an additional 20% of the original-oil-in-place. Submitted by Otue Ekong (lbsrooe@brunel.ac.uk) on 2011-06-30T13:19:02Z No. of bitstreams: 1 FulltextThesis.pdf: 18055875 bytes, checksum: 0506061173c87637b42461f10322e785 (MD5) Approved for entry into archive by Otue Ekong(lbsrooe@brunel.ac.uk) on 2011-06-30T13:19:23Z (GMT) No. of bitstreams: 1 FulltextThesis.pdf: 18055875 bytes, checksum: 0506061173c87637b42461f10322e785 (MD5) Made available in DSpace on 2011-06-30T13:19:23Z (GMT). No. of bitstreams: 1 FulltextThesis.pdf: 18055875 bytes, checksum: 0506061173c87637b42461f10322e785 (MD5) Funded by Mobil North Sea Ltd. en http://bura.brunel.ac.uk/bitstream/2438/5458/1/FulltextThesis.pdf Brunel synthesised surfactants Ethoxylated phenols Sulphonated surfactants Microemulsion Surfactants and enhanced oil recovery Thesis