Proceedings of International Symposium on Oilfield Chemistry 1997
DOI: 10.2523/37240-ms
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Control of Wax Deposition: An Experimental Investigation of Crystal Morphology and an Evaluation of Various Chemical Solvents

Abstract: TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractFour commercial solvents and o-xylene have been tested for their effectiveness in remediating paraffin (wax) depositions from three different dead oils. The dead oils were sampled from the North Sea, Alberta and Gulf of Mexico, respectively. Representative field solvent/oil concentrations of 2000 and 4000 ppm (vol) were prepared for each oil and solvent considered in this work. Two state-of-the-art techniques, namely a cross polar microscopy (CPM) and a rheom… Show more

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Cited by 8 publications
(16 citation statements)
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“…0.00 C 33 0.00 C 6 0.00 C 34 0.00 C 7 0.00 C 35 0.00 C 8 0.00 C 36 0.00 C 9 0.00 C 37 0.00 C 10 0.00 C 38 0.00 C 11 0.92 C 39 0.00 C 12 4.52 C 40 0.00 C 13 3.81 C 41 0.00 C 14 7.82 C 42 0.00 C 15 6.30 C 43 0.00 C 16 9.04 C 44 0.00 C 17 5.96 C 45 0.00 C 18 8.08 C 46 0.00 C 19 6.21 C 47 0.00 C 20 6.17 C 48 0.00 C 21 3.65 C 49 0.00 C 22 3.73 C 50 0.00 C 23 1.97 C 51 0.00 C 24 2.10 C 52 0.00 C 25 0.91 C 53 0.00 C 26 1.08 C 54 0.00 C 27 0. …”
Section: Discussionunclassified
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“…0.00 C 33 0.00 C 6 0.00 C 34 0.00 C 7 0.00 C 35 0.00 C 8 0.00 C 36 0.00 C 9 0.00 C 37 0.00 C 10 0.00 C 38 0.00 C 11 0.92 C 39 0.00 C 12 4.52 C 40 0.00 C 13 3.81 C 41 0.00 C 14 7.82 C 42 0.00 C 15 6.30 C 43 0.00 C 16 9.04 C 44 0.00 C 17 5.96 C 45 0.00 C 18 8.08 C 46 0.00 C 19 6.21 C 47 0.00 C 20 6.17 C 48 0.00 C 21 3.65 C 49 0.00 C 22 3.73 C 50 0.00 C 23 1.97 C 51 0.00 C 24 2.10 C 52 0.00 C 25 0.91 C 53 0.00 C 26 1.08 C 54 0.00 C 27 0. …”
Section: Discussionunclassified
“…Generally, the weight percent of the saturates in the crude oil, the structural distribution of the paraffin components, and the occurrence of other solids like formation fines, corrosion materials, and presence of asphaltenes which could form nucleating sites-all contribute to wax precipitation and deposition. Oils containing high C 30+ (especially normal paraffin C 30+ ) concentrations exhibit high cloud point temperatures (Ferworn et al, 1997).…”
Section: Crude Oil Compositionmentioning
confidence: 99%
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“…Crude oil WPT has been measured using conventional experimental methods such as differential scanning calorimetry (DSC) [4][5][6][7][8], viscometry [5][6][7][8][9][10], near-IR spectroscopy (NIR) [11] and cross-polarized microscopy (CPM) [5,7,[12][13][14][15]. The measurement of WPT by DSC is explained in detail in a later section in this report.…”
Section: Summary Of Wpt Measurement Methodsmentioning
confidence: 99%
“…But the main concern for the petroleum industry, as far as HMWHC are concerned, regards the prediction of their deposition in field facilities (Ferworm, 1997;Thanh et al, 1999). Thermodynamic models have been developed to predict wax precipitation that occurs during the oil transport in pipelines (Weingarten and Euchner, 1988;Calange, 1996;Calange et al, 1997) but these models are not directly applicable to wax precipitation during production because the input parameters used by these models are deduced from the produced oil which has lost, if precipitation has already occurred, most of the C 40+ fraction either within the reservoir or along the tubing.…”
Section: Introductionmentioning
confidence: 99%