On the evaluation of asphaltene adsorption onto dolomite surface: The roles of flow condition, composition of asphaltene, and dolomite size

Sajjad Ansari; Hamid Bahmaninia; Mohammad-Reza Mohammadi; Mehdi Ostadhassan; Saeid Norouzi-Apourvari; Mahin Schaffie; Mohammad Ranjbar; Abdolhossein Hemmati-Sarapardeh

Alexandria Engineering Journal (Dec 2022)

On the evaluation of asphaltene adsorption onto dolomite surface: The roles of flow condition, composition of asphaltene, and dolomite size

Sajjad Ansari,
Hamid Bahmaninia,
Mohammad-Reza Mohammadi,
Mehdi Ostadhassan,
Saeid Norouzi-Apourvari,
Mahin Schaffie,
Mohammad Ranjbar,
Abdolhossein Hemmati-Sarapardeh

Affiliations

Sajjad Ansari: Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran; Corresponding authors at: Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran (A. Hemmati-Sarapardeh), and State Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development, Ministry of Education, Northeast Petroleum University, Daqing 163318, China (M. Ostadhassan)
Hamid Bahmaninia: Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
Mohammad-Reza Mohammadi: Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
Mehdi Ostadhassan: State Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development, Ministry of Education, Northeast Petroleum University, Daqing 163318, China.; Institute of Geosciences, Marine and Land Geomechanics and Geotectonics, Christian-Albrechts-Universität, Kiel 24118, Germany; Department of Geology, Ferdowsi University of Mashhad, Mashhad, Iran; Corresponding authors at: Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran (A. Hemmati-Sarapardeh), and State Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development, Ministry of Education, Northeast Petroleum University, Daqing 163318, China (M. Ostadhassan)
Saeid Norouzi-Apourvari: Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
Mahin Schaffie: Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
Mohammad Ranjbar: Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran; Department of Mining Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
Abdolhossein Hemmati-Sarapardeh: Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran; College of Construction Engineering, Jilin University, Changchun, China; Corresponding authors at: Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran (A. Hemmati-Sarapardeh), and State Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development, Ministry of Education, Northeast Petroleum University, Daqing 163318, China (M. Ostadhassan)

Journal volume & issue: Vol. 61, no. 12
pp. 9411 – 9425

Abstract

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Asphaltene precipitation/deposition is one of the main problems in petroleum industry at various stages. In this study, various controlling factors on the adsorption of different types of asphaltene on the surface of dolomite of different size, as one of the most abundant minerals in the reservoir is investigated. First, asphaltenes and adsorbents (dolomite) properties were analyzed via several analytical techniques. Then, adsorption of four asphaltene samples of various origins and chemical composition on dolomite at micron and nano size were carried out in both static and dynamic modes and results were examined following the adsorption process. Based on the static tests, the adsorption amount of asphaltenes on nano- and micro-dolomite was measured 3.52–11 mg/m2 and 0.82–2.74 mg/m2, respectively. The results revealed that the most significant parameters that would affect the asphaltene adsorption on dolomite as an adsorbent are the total nitrogen and sulfur (N + S) content and the aromaticity of the asphaltenes. Moreover, as the flow rate was increased three times in the dynamic experiments, a decrease of 15–25% in asphaltene adsorption was observed, which was attributed to physisorption of asphaltene on dolomite or due to higher flow velocities. Collectively, the findings of this study can enable us to better understand the mechanisms of asphaltene adsorption/precipitation on dolomite and lead to better management of oil production from dolomitic reservoirs.

Published in Alexandria Engineering Journal

ISSN: 1110-0168 (Print); 2090-2670 (Online)
Publisher: Elsevier
Country of publisher: Egypt
LCC subjects: Technology: Engineering (General). Civil engineering (General)
Website: http://www.journals.elsevier.com/alexandria-engineering-journal/

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