Vietnam Petroleum Institute VPI


Vietnam Petroleum Institute VPI


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Nguyen S.T.,National University of Singapore | Feng J.,National University of Singapore | Le N.T.,Vietnam Petroleum Institute VPI | Le A.T.T.,Vietnam Petroleum Institute VPI | And 3 more authors.
Industrial and Engineering Chemistry Research | Year: 2013

Polyprolylene is commonly used for crude oil spill cleaning, but it has low absorption capacity and is nonbiodegradable. In our work, a green, ultralight, and highly porous material was successfully prepared from paper waste cellulose fibers. The material was functionalized with methyltrimethoxysilane (MTMS) to enhance its hydrophobicity and oleophilicity. Water contact angles of 143 and 145 were obtained for the MTMS-coated recycled cellulose aerogel. The aerogel achieved high absorption capacities of 18.4, 18.5, and 20.5 g/g for three different crude oils at 25 C, respectively. In the investigated temperature range of 10, 25, 40, and 60 C for the absorption of the tested crude oil on the aerogel, a highest absorption capacity of 24.4 g/g was obtained. It was found that the viscosity of the crude oils is the main factor affecting their absorption onto the aerogel. The strong affinity of the MTMS-coated recycled cellulose aerogel to the oils makes the aerogel a good absorbent for crude oil spill cleaning. © 2013 American Chemical Society.

Giao P.H.,Asian Institute of Technology | Do D.Q.,Vietnam Petroleum Institute VPI
15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015: New Innovations and Sustainability | Year: 2015

Almost 30 years have passed since the first oil was produced from the fractured granite basement offshore Southern Vietnam there are still many questions left to be answered for this special type of reservoir and its fracture system characterization. In this study, we tried to investigate the contributions of micro-fracture and macro-fracture porosity by revisiting and deriving the coefficient of porosity partitioning and applying for a case study in the Cuu long basin.

Petersen H.I.,Geological Survey of Denmark | Nytoft H.P.,Geological Survey of Denmark | Fyhn M.B.W.,Geological Survey of Denmark | Dau N.T.,Vietnam Petroleum Institute VPI | And 3 more authors.
Society of Petroleum Engineers - International Petroleum Technology Conference 2012, IPTC 2012 | Year: 2012

The Vietnamese shelf contains several petroleum-producing Cenozoic rift basins, including the Song Hong, Cuu Long, Nam Con Son, and Malay-Cho Thu basins. This study describes geochemical data of oils and condensates from these basins, including new data from the Song Hong and Malay-Tho Chu basins, and demonstrates the variability in composition and source of the petroleum. The results contribute to a better understanding of oil types and petroleum-generating source rocks offshore Vietnam. All investigated samples contain angiosperm biomarkers (e.g. oleanane, bicadinane) indicating sourcing from post-Late Cretaceous source rocks. The Cuu Long Basin is the major oil-producing basin in Vietnam and the highly paraffinic oils have a lacustrine source (high TPP ratios, low C 31R/C 30 hopane ratios, Pr/Ph ratios of 2-1) and were generated from rocks within the early- to mid-oil window. Lacustrine oils are also known from wells at the northern margin of the Song Hong Basin, and analyses of offshore condensate discoveries show they were generated from relatively mature lacustrine source rocks. However, oil with a conspicuous coaly biomarker signature occurs in the Nam Con Son Basin. Further, a number of the condensates from the Song Hong Basin contain high proportions of higher land plant biomarkers suggesting significant contributions from coaly source rocks. Recently analysed oils from the Malay-Cho Thu Basin (northern margin of the Malay Basin) have likewise a geochemical composition strongly suggesting a coaly source (high wax, Pr/Ph ratios up to >10, dominance of C 29 steranes). Hence, new data together with previous data emphasize that coaly source rocks are important petroleum producers on the Vietnamese shelf. Coal-bearing strata in the syn- and post-rift successions in the Cenozoic basins should thus be considered as important additional source rocks offshore Vietnam. Copyright 2011, International Petroleum Technology Conference.

Phan B.M.Q.,Vietnam Petroleum Institute VPI | Ha Q.L.M.,Vietnam Petroleum Institute VPI | Le N.P.,Vietnam Petroleum Institute VPI | Ngo P.T.,Vietnam Petroleum Institute VPI | And 5 more authors.
Catalysis Letters | Year: 2015

Hydrodeoxygenation (HDO) of guaiacol (GUA), has been carried out over γ-Al2O3, CeO2, SBA-15 supported NiMo catalysts in an autoclave at 250°C and a hydrogen pressure of 5 MPa. In comparison with NiMo/γ-Al2O3, both NiMo/CeO2 and NiMo/SBA-15 catalysts showed their higher activities. NiMo/SBA-15 has been found to be the most potential one for HDO of GUA with GUA conversion and HDO degree of 90 and 67.5 %, respectively. The main product was cyclohexane with its yield of 56 mol%. The outstanding activity of this catalyst results from a high dispersion of its active sites on SBA-15 as catalyst support. For CeO2 supported catalyst, some interactions of Ce-Mo can be occurred, leading to an enhancement of its HDO performance. Graphical Abstract: [Figure not available: see fulltext.] © 2014 Springer Science+Business Media New York.

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