نتایج جستجو برای: Heavy Oil

تعداد نتایج: 260952  

2008
Jun-Young SONG Kei NAKAYAMA Yasunori MURAKAMI Shin-Ichi KITAMURA

Heavy oil pollution caused by tanker accidents is one of the most important environmental issues in the world. The pollution is related to the impact on marine organisms, since heavy oil consists of toxic substances such as polycyclic aromatic hydrocarbons (PAHs), heavy metals and benzol. However, the effect of heavy oil on the fish immune system is not well understood. In the present study, th...

2017
Soheil Rezazadeh Mofradnia Fatemeh Yazdian Hamid Rashedi Behnam Rasekh Meisam Omidi Mojgan Sheikhpour Mehdi Esmaeili Bidhendi

Introduction EOR This word literally means enhanced oil recovery and in the oil industry area used as extraction of oil reservoir that deals by advanced industrial techniques to harvest of reservoir heavy and semi-heavy oil [1]. In Canada 1.2 million barrels a day, Venezuela's 600,000 barrels per day and in China 150,000 barrels per day produced oil of heavy oil reservoirs. Canada, America, Ven...

2015
Ning Li Bo Yan Xian-Ming Xiao

With the growing demand for energy and the depletion of conventional crude oil, heavy oil in huge reserve has attracted extensive attention. However, heavy oil cannot be directly refined by existing processes unless they are upgraded due to its complex composition and high concentration of heteroatoms (N, S, Ni, V, etc.). Of the variety of techniques for heavy oil upgrading, supercritical water...

2017
Biji Shibulal Saif N. Al-Bahry Yahya M. Al-Wahaibi Abdulkadir E. Elshafie Ali S. Al-Bemani Sanket J. Joshi

Microbial Enhanced Oil Recovery (MEOR) is a potential technology for residual heavy oil recovery. Many heavy oil fields in Oman and elsewhere have difficulty in crude oil recovery because it is expensive due to its high viscosity. Indigenous microbes are capable of improving the fluidity of heavy oil, by changing its high viscosity and producing lighter oil fractions. Many spore-forming bacteri...

2016
Abdullah Al-Sayegh Yahya Al-Wahaibi Sanket Joshi Saif Al-Bahry Abdulkadir Elshafie Ali Al-Bemani

Crude oil contamination is one of the major environmental concerns and it has drawn interest from researchers and industries. Heavy oils contain 24-64% saturates and aromatics, 14-39% resins and 11-45% asphaltene. Resins and asphaltenes mainly consist of naphthenic aromatic hydrocarbons with alicyclic chains which are the hardest to degrade. Crude oil biodegradation process, with its minimal en...

Journal: :iranian journal of oil & gas science and technology 2014
sahar afzal mohammad nikookar mohammad reza ehsani emad roayaei

nanotechnology has the potential to introduce revolutionary changes to several areas of oil and gasindustry such as exploration, production, enhanced oil recovery, and refining. in this paper, the effectof different concentrations of fe2o3 nanoparticles as a catalyst on the heavy oil viscosity at varioustemperatures is studied. furthermore, the effect of a mixture of fe2o3 nanoparticles and ste...

Nanotechnology has the potential to introduce revolutionary changes to several areas of oil and gas industry such as exploration, production, enhanced oil recovery, and refining. In this paper, the effect of different concentrations of Fe2O3 nanoparticles as a catalyst on the heavy oil viscosity at various temperatures is studied. Furthermore, the effect of a mixture of Fe2O3 nanoparticles and ...

2015
Hua-rui Hao Hui-jun Su Gang Chen Jing-rui Zhao Li Hong

To seek for new catalysts for the aquathermolysis of crude oil under relatively low temperature, in this paper, a series of Mannich base-transit metal coordination complexes was synthesized and used in aquathermolysis of heavy oil as catalyst. The results show an evident viscosity reduction by 84.2% for the heavy oil reacted at 180 C for 24 h catalyzed by the Ni(II) coordination complex. The gr...

Journal: :Journal of cataract and refractive surgery 2007
Aylin Yaman A Osman Saatci Sulen Sarioğlu F Hakan Oner Ismet Durak

PURPOSE To determine the interaction of heavy silicone oil with various intraocular lens (IOL) materials and whether heavy silicone oil covers the silicone IOL optic as silicone oil does. SETTING Department of Ophthalmology, Dokuz Eylul University, Izmir, Turkey. METHODS The study group comprised 5 poly(methyl methacrylate) (PMMA) IOLs, 4 foldable silicone IOLs, 5 foldable hydrophilic acryl...

2011
RICK PENNEY

Oman is currently a particular “hot spot” for investment in a range of EOR techniques to produce heavy oil, but is much less visible in industry statistics than countries such as Canada and Venezuela. Other countries in the Middle East are encouraged by Oman’s success and, with the additional impetus of increasing oil prices, are becoming more active in heavy oil production. For example, Iran a...

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