Pour Point Depressants for Transportation of Paraffinic Oil

Надиров, К. С.; Marenov, B. T.; Nadirov, Rashid; Bimbetova, G. Zh.; Tulekbayeva, A. K.

doi:10.1166/jctn.2019.8129

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“…Paraffins in greater or lesser amounts are almost always present in the produced oil, in particular, oil from the fields of the South Torgay Depression of the Republic of Kazakhstan (Kumkol, Aryskum, Akshabulak, Nuraly, and others), containing up to 15 % or more of paraffin compounds 5. It is believed that oil for transportation under normal conditions should contain no more than 6 % paraffins 6. During pipeline oil transportation, serious problems arise due to crystallization of the paraffins and an increase in oil viscosity: Pressure in the pipeline and energy consumption for pumping equipment and their wear increase, and the pipeline throughput decreases 7.…”

Section: Introductionmentioning

confidence: 99%

Obtaining High‐Paraffin‐Content Oil Depressants

et al. 2020

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A depressor action composition was prepared for lowering the pour point of high‐paraffin oils based on butanol and cotton soap stock fatty acids (FA), mainly a C16–C18 distillate fraction. The possibility of using cotton soap stock FA for their esterification with butyl alcohol and ester production based on them is shown. A scheme for preparing the depressor action reagent “BEG‐1” based on the esterified FA, monoethanolamine, and cotton soap stock is proposed. When the BEG was introduced into the samples of high‐paraffin oil taken directly from the group metering device, a decrease in the paraffin crystal size and shape was observed, i.e. their almost complete dissolution, which was accompanied by a change in the viscosity of the samples. Compositions having high surface‐active properties, thermodynamic resistance, and stability were prepared. The paraffin crystal morphology, crystal structure, and shape change were studied. The data obtained are of value for the pipeline transport of hydrocarbons, as the use of the proposed depressor action reagent for high‐paraffin oils can significantly reduce the viscosity of the oil in the pipeline, helping to reduce the energy costs associated with heating the oil for its pumping.

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Section: Introductionmentioning

confidence: 99%