Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Sunil Ashtekar"'
Autor:
Sameer Punnapala, Jun Kuang, Shekhar Jain, Mohammad Tavakkoli, Josiah Yarbrough, Sunil Ashtekar, Francisco M. Vargas, Dalia Abdallah, Jianxin Wang
Publikováno v:
Energy & Fuels. 32:12405-12415
Asphaltene deposition is one of the major flow assurance problems that can potentially deteriorate due to the current tendencies to produce from the deep-water environment or as a result of enhanced oil recovery operations based on miscible gas injec
Autor:
Shekhar Jain, Nirmal Tatavalli-Mittadar, Sunil Ashtekar, Kamran Akbar Zadeh, A-Sukaimy Abd-Rahman, Sujatha Degaleesan, Stuart McGregor
Publikováno v:
Day 3 Wed, November 14, 2018.
Restriction or blockage of flow path due to waxy deposits is a global issue in the oil and gas production. This undesirable flow assurance issue leads to increase in production deferment and OPEX for mitigation and frequent intervention. It may also
Autor:
Richard Pollard, Joseph Ponminissery, Sunil Ashtekar, John Nighswander, Artur Stankiewicz, Rizwan Khan, Bruno Okoh
Publikováno v:
Day 3 Wed, May 03, 2017.
To ensure proper selection of reservoir completion, subsea and topside production materials of construction and production chemicals, it is imperative to accurately assess the Hydrogen Sulfide (H2S) concentration in produced reservoir fluids. At high
Autor:
Mason B. Tomson, Miguel Garcia-Bermudes, Yi-Tsung Lu, Narayan Bhandari, Amy T. Kan, Sunil Ashtekar, Francisco M. Vargas, Nirmal Tatavalli-Mittadar, Zhaoyi Dai, Ya Liu, Raymond Nicholas French
Publikováno v:
Day 1 Mon, April 03, 2017.
Hydrogen sulfide poses significant challenges to develop oil and gas fields and manage risks in terms of personal and process safety. There is a great need to accurately interpret a measured H2S concentration from a gas/oil/water sample for material
Publikováno v:
Chemical Engineering Science. 59:1131-1138
An experimental procedure to measure the adsorption and desorption kinetics of hydrocarbons in fluid catalytic cracking (FCC) catalysts using a tapered element oscillating microbalance is described. It enables adsorption rates to be measured on a tim
Publikováno v:
Spectroscopy Letters. 33:569-584
Infrared and FT-Raman spectra have been obtained on pyridine adsorbed within two siliceous materials, silicalite and MCM-41. Both spectroscopic techniques detect the presence of weak physisorbed pyridine and stronger hydrogen-bonded pyridine. In part
Autor:
Sunil Ashtekar, and Patrick J. Barrie, Michael D. Mantle, Lynn F. Gladden, Alistair S. McLeod, Jeremy J. Hastings
Publikováno v:
The Journal of Physical Chemistry B. 104:5281-5287
FT-Raman spectroscopy and temperature-programmed desorption (TPD) measurements have been used to gain information on the preferred adsorption sites for p-xylene and n-heptane adsorbed within silicalite. FT-Raman spectroscopy is used to probe the loca
Publikováno v:
Journal of the Chemical Society, Faraday Transactions. 94:1157-1161
FT-Raman spectroscopy has been used to probe single-component and binary-component adsorption of benzene, p-xylene and cyclohexane in silicalite-1. It was shown that FT-Raman is not only able to probe the sorbate–framework interaction related to th
Publikováno v:
Proceedings / Indian Academy of Sciences. 106:621-628
Silicon-substituted aluminophosphates with different framework structures SAPO-5, -11, -34 and -44 have been synthesized by the hydrothermal method using organic templates. The extent of silicon substitution in these materials has been investigated b
Publikováno v:
ChemInform. 25