Article
Energy & Fuels
Narges Bahaloo Horeh, Negahdar Hosseinpour, Alireza Bahramian
Summary: This study provides an asphaltene inhibitor (BZSS-012) and emphasizes the mutual dependence of the inhibitor-asphaltene molecular structure/functional groups for successful inhibition. Two dead oil samples were used to extract asphaltenes and prepare model oils, and interfacial rheology measurements and conventional asphaltene dispersant tests were performed to evaluate the inhibitor performance. It was found that the inhibitor achieved an efficiency of 99.2% in the F-model oil, higher than the 66.7% efficiency in the A-model oil. Monitoring the standard deviation of dynamic interfacial tension was considered as an appropriate method to screen asphaltene inhibitors.
Review
Energy & Fuels
Isah Mohammed, Mohamed Mahmoud, Dhafer Al Shehri, Ammar El-Husseiny, Olalekan Alade
Summary: The deposition of asphaltene in reservoirs and pipelines leads to serious flow assurance challenges with significant economic implications. Various preventive and corrective measures have been proposed, but the discussion on the best model and cost-effective prevention strategy is ongoing.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Ahmed Alhosani, Nagu Daraboina
Summary: The study developed a multiphase simulator to predict asphaltene deposition and validated the robustness of the simulation results. It was found that using single-phase assumption under multiphase conditions led to significant errors, which could result in economic and operational burdens for the oil and gas industry.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Review
Energy & Fuels
Kabir H. Yar'Adua, Idoko J. John, Abubakar J. Abbas, Kazeem A. Lawal, Aisha Kabir
Summary: Using multiple high-pressure water jets is investigated as a cheaper and less risky alternative to corrosive chemicals for removing soft scales in production tubings. Experimental results show a positive correlation between descaling efficiency and spray injection pressure, and negative correlations with nozzle count and spray stand-off. The efficiency of scale removal is not significantly affected by chamber conditions, either ambient or pressurized.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Arley Alles Cruz, Fabio Cleisto Alda Dossi, Giancarlo Richard Salazar-Banda, Elton Franceschi, Gustavo Rodrigues Borges, Claudio Dariva
Summary: This study develops a new technique for monitoring inorganic scale based on electrical measurements in order to tackle scale formation in deep water oilfields. Synthetic water with similar composition to a pre-salt Brazilian oilfield was used for experiments, and two different methodologies for fouling formation were applied. The results show that the multiple-batch methodology increases the content of inorganic deposits on the electrodes and improves the system's output signal decay analysis. SEM-EDS studies validate the presence of fouling deposits and demonstrate the spatial distribution of the main scaling chemical elements.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2023)
Article
Energy & Fuels
Marziyeh Salehzadeh, Maen M. Husein, Cyrus Ghotbi, Vahid Taghikhani, Bahram Dabir
Summary: The study developed an integrated approach to accurately model asphaltene precipitation and deposition in wellbores, revealing issues with underestimation of asphaltene layer thickness and the influence of different flow models.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Ivan Moncayo-Riascos, Christian Guerrero-Benavides, Juliana Giraldo, Oscar Ramirez-Jaramillo, Fernando A. Rojas-Ruiz, Jorge A. Orrego-Ruiz, Cristiam Cundar, Wilson A. Canas-Marin, Raul Osorio Gallego
Summary: A machine learning-based classification model and a linear regression model were proposed in this study to predict the risk of asphaltene damage and the asphaltene onset pressure. Through experimental evaluation and comparison, the accuracy and effectiveness of these models were demonstrated. The integrated model contributes to predicting and preventing the decline in oil production caused by asphaltene precipitation.
Article
Energy & Fuels
Yang Liu, Xiao-Fang Lv, Qian-Li Ma, Shi-Dong Zhou, Bo-Hui Shi, Hui Du, Yun Lei, Peng-Fei Yu, Shang-Fei Song, Jing Gong, Bing-Cai Sun
Summary: This study elucidates the synergistic effect of wax and hydrates and its impact on the operation and transportation safety of offshore petroleum fields. Different plugging scenarios and flow properties were observed in systems with varying wax contents. The presence of wax deteriorated the performance of anti-agglomerant, and the wax deposition layer altered the adhesion and bedding of hydrates, resulting in variations in flow properties and wall deposition state. A physical model for the synergistic deposition of wax and hydrates was presented, which is valuable for risk analysis and blockage prediction.
Article
Energy & Fuels
Eissa Al-Safran, Batoul Al -Ali
Summary: Asphaltene deposition in oil wells is a challenging flow assurance phenomenon. This study aims to evaluate and compare existing asphaltene deposition models and improve the current understanding and prediction of this phenomenon. A large experimental database is collected and a new sticking probability model is proposed, outperforming existing models in predicting asphaltene deposition.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Review
Energy & Fuels
Charlie van der Geest, Aline Melchuna, Leticia Bizarre, Antonio C. Bannwart, Vanessa C. B. Guersoni
Summary: Wax deposition is a costly and complex issue in the oil and gas industry. While molecular diffusion has long been believed as the main mechanism, models based on it have severe limitations. Further research is needed to better understand the controlling mechanism of wax deposition and other related issues.
Article
Energy & Fuels
Syed Haider Abbas Rizvi, Anil Yadav, Jyoti Phirani, Vikram Singh
Summary: This study discusses the removal of asphaltene from inorganic silica surfaces using hydrodynamic forces. The results show that large aggregates of asphaltene can be removed from the surface with an increase in flow rates. The study also discusses the possible mechanism of asphaltene removal from the surface based on hydrodynamic force calculations.
Article
Mechanics
Xiaoliang Chen, Ning Zhu, Weitian Wang, Zhenhai Wang, Yuki Wakata, Xing Chao
Summary: In this paper, a sensor based on tunable laser absorption spectroscopy is designed to study the vapor-phase temperature and concentration distribution of evaporating sessile drops, and a data processing method involving data pre-processing and tomographic reconstruction is proposed to realize high-precision, spatially resolved measurement. The experimental results show that accurate reconstruction of concentration and temperature distribution has been achieved, even in the close vicinity to the gas-liquid interface with high-gradient changes.
Article
Engineering, Petroleum
Xun Zhang, Qiyu Huang, Wei Chen, Yu Zhang, Xuedong Gao, Yamei Liu, Yijie Wang
Summary: This study developed a theoretical model to accurately estimate the wax breaking force and wax removal efficiency under different pigging conditions. The experimental results showed that a higher pigging speed could increase the wax breaking force but reduce the wax removal efficiency.
Article
Engineering, Mechanical
Ronald E. Vieira, Farzin Darihaki, Siamack A. Shirazi
Summary: Horizontal wells are crucial for maximizing hydrocarbon recovery, but the deposition of sand particles can lead to blockages and reduced production. Therefore, studying sand deposition and erosion in intermittent flow is essential for predicting production and ensuring pipeline safety.
Article
Energy & Fuels
Zhihua Wang, Xiaoyu Liu, Jinling Li, Jiajun Hong, Yaming Qi, Xiaowei Li
Summary: This paper systematically investigates the micro influence mechanism of the coated wall on the behavior of wax-asphaltene molecules in waxy crude oil transportation flowlines. The results show that the presence of coatings inhibits the aggregation and adhesion of wax-asphaltene molecules, and the degree of diffusion inhibition varies with different coatings. These findings provide new insights and guidance for controlling heavy component deposition in pipeline transportation.
