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Wax Precipitation in Crude Oil by Coutinho Model Based on Conventional Gas Chromatography Data

Scientific Contributions Oil and Gas · Vol. 36 No. 2 (2022) · hlm. 75–82

DOI
10.29017/SCOG.36.2.764
ISSN
2541-0520, 2089-3361
Terbit
2022-02-24
Penerbit
Testing Center for Oil and Gas LEMIGAS
Bahasa
eng
Lisensi
creativecommons.org/licenses/by/4.0

Abstrak

Wax precipitation in crude oils can produce problems in oil production and transportation operations. Prediction is the key of avoidance or remediation of the wax problem of flow assurance. Among the wax prediction thermodynamic model, Coutinho model can be run using limited laboratory data, but the result is comparably accurate. The model requires n-paraffin distribution, which commonly determined by high-temperature gas chromatography (HTGC) analysis. However, only few laboratories could perform the HTGC. Lemigas has abundant database of crude oil with conventional gas chromatography data. An extended n-paraffin distribution was calculated based on the conventional GC data by performing extrapolation and normalization to total wax content. The n-paraffin distribution was applied in Coutinho model to predict wax precipitation of a crude oil sample. The WAT obtained from the model deviated only 2°C from DSC data. The result was also valid to DSC data in term of precipitated wax amount along temperature range.

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  • University of Indonesia
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  • Institut Teknologi Indonesia
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SlametAfiliasi tidak diketahui1
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Tiur ElysabethSerang Raya University1
RatnawatiInstitut Teknologi Indonesia1
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Sumber metadata: OAI-PMH (metadata jurnal) https://journal.lemigas.esdm.go.id/index.php/SCOG/oai, pertama di-harvest 10 Nov 2026, terakhir terlihat 10 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en">Wax Precipitation in Crude Oil by Coutinho Model Based on Conventional Gas Chromatography Data</dc:title>
	<dc:creator xml:lang="en">Kurniawan, Muh</dc:creator>
	<dc:creator xml:lang="en">Adiwar, Adiwar</dc:creator>
	<dc:creator xml:lang="en">Mulia, Kamarza</dc:creator>
	<dc:creator xml:lang="en">Anwar, Chairil</dc:creator>
	<dc:subject xml:lang="en">kromatogrfi gas</dc:subject>
	<dc:subject xml:lang="en">model Coutinho</dc:subject>
	<dc:subject xml:lang="en">presipitasi wax</dc:subject>
	<dc:description xml:lang="en">Wax precipitation in crude oils can produce problems in oil production and transportation operations. Prediction is the key of avoidance or remediation of the wax problem of flow assurance. Among the wax prediction thermodynamic model, Coutinho model can be run using limited laboratory data, but the result is comparably accurate. The model requires n-paraffin distribution, which commonly determined by high-temperature gas chromatography (HTGC) analysis. However, only few laboratories could perform the HTGC. Lemigas has abundant database of crude oil with conventional gas chromatography data. An extended n-paraffin distribution was calculated based on the conventional GC data by performing extrapolation and normalization to total wax content. The n-paraffin distribution was applied in Coutinho model to predict wax precipitation of a crude oil sample. The WAT obtained from the model deviated only 2°C from DSC data. The result was also valid to DSC data in term of precipitated wax amount along temperature range. </dc:description>
	<dc:publisher xml:lang="en">Testing Center for Oil and Gas LEMIGAS</dc:publisher>
	<dc:date>2022-02-24</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.lemigas.esdm.go.id/index.php/SCOG/article/view/764</dc:identifier>
	<dc:identifier>10.29017/SCOG.36.2.764</dc:identifier>
	<dc:source xml:lang="en">Scientific Contributions Oil and Gas; Vol. 36 No. 2 (2013); 75-82</dc:source>
	<dc:source xml:lang="id">Scientific Contributions Oil and Gas; Vol 36 No 2 (2013); 75-82</dc:source>
	<dc:source>2541-0520</dc:source>
	<dc:source>2089-3361</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.lemigas.esdm.go.id/index.php/SCOG/article/view/764/551</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 1970 SCIENTIFIC CONTRIBUTIONS OIL AND GAS (SCOG)</dc:rights>
	<dc:rights xml:lang="en">https://creativecommons.org/licenses/by/4.0</dc:rights>
</oai_dc:dc>