Removal of asphaltene and paraffin deposits using micellar solutions and fused reactions. Final report, 1995--1997

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Chemical treatments of paraffin and asphaltene deposition by means of cleaning fluids were carried out in this research project. Research focused on the characterization of asphaltene and paraffin materials and dissolution of asphaltene and paraffin deposits using surfactant/micellar fluids developed early in the project. The key parameters controlling the dissolution rate were identified and the process of asphaltene/paraffin dissolution were examined using microscopic apparatus. Numerical modeling was also carried out to understand the dissolution of paraffin deposits. The results show that fused chemical reaction systems are a promising way of removing paraffin deposits in subsea pipelines. The fused system may ... continued below

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177 p.

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Chang, C.L.; Nalwaya, V.; Singh, P. & Fogler, H.S. May 1, 1998.

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Description

Chemical treatments of paraffin and asphaltene deposition by means of cleaning fluids were carried out in this research project. Research focused on the characterization of asphaltene and paraffin materials and dissolution of asphaltene and paraffin deposits using surfactant/micellar fluids developed early in the project. The key parameters controlling the dissolution rate were identified and the process of asphaltene/paraffin dissolution were examined using microscopic apparatus. Numerical modeling was also carried out to understand the dissolution of paraffin deposits. The results show that fused chemical reaction systems are a promising way of removing paraffin deposits in subsea pipelines. The fused system may be in the form of alternate pulses, emulsions systems or encapsulated catalyst systems. Fused reaction systems, in fact, are extremely cost-effective--less than 10% of the cost of replacing entire sections of the blocked pipeline. The results presented in this report can have a real impact on the petroleum industry and the National Oil Program, if it is realized that the remediation technologies developed here can substantially delay abandonment (due to asphaltene/paraffin plugging) of domestic petroleum resources. The report also sheds new light on the nature and properties of asphaltenes and paraffin deposits which will ultimately help the scientific and research community to develop effective methods in eliminating asphaltene/paraffin deposition problems. It must also be realized that asphaltene remediation technologies developed and presented in this report are a real alternative to aromatic cleaning fluids currently used by the petroleum industry.

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177 p.

Notes

OSTI as DE98000482

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  • Other Information: PBD: May 1998

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  • Other: DE98000482
  • Report No.: DOE/PC/91008--6
  • Grant Number: AC22-94PC91008
  • DOI: 10.2172/290886 | External Link
  • Office of Scientific & Technical Information Report Number: 290886
  • Archival Resource Key: ark:/67531/metadc679801

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • May 1, 1998

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 11, 2015, 12:38 p.m.

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Chang, C.L.; Nalwaya, V.; Singh, P. & Fogler, H.S. Removal of asphaltene and paraffin deposits using micellar solutions and fused reactions. Final report, 1995--1997, report, May 1, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc679801/: accessed April 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.