feridun esmaeil zadeh
shiraz univercity
[ 1 ] - Experimental Determination of the Temperature Suppression in Formation of Gas Hydrate in Water Based Drilling Mud
The aqueous mixtures of light gas molecules under low-temperature and high-pressure conditions are candidates to form gas hydrate clathrates. The formation of gas hydrate may lead to various problems and extra charges in natural gas production and processing. The presence of hydrate crystals forming a stable solid phase can potentially block the wells, pipes, and process facilities. To avoid su...
[ 2 ] - Optimization of Swelling Percentage of Poly(AAm-co-AA) in BaCl2 Salt Solution Using Response Surface Methodology (RSM)
: Unwanted water production from oil and gas reservoirs is a serious problem for producers. Preformed particle gel (PPG) treatment is a benefit approach to control excess water production. Swelling percentage of PPG samples in saline water is a key factor affecting the efficiency of the water conformance process. In this study, an efficient series of PPGs were synthesized and their swelling beh...
[ 3 ] - Beyond the Limitations of API RP-14E Erosional Velocity -A Field Study for Gas Condensate Wells
Fluid velocity has the potential to cause severe erosion damage to oil & gas production infrastructure. In order to avoid or alleviate damage due to erosion, the American Petroleum Institute Recommended Practice (API RP) 14E recommends a threshold fluid velocity for production tubing and pipelines. However, field and laboratory data have proven that the applied empirical constants, known as C-f...
[ 4 ] - Diesel Oil Upgradation by Ultrasound Irradiation: A Study on the Effects of Main Operational Parameters
The main objective of this work is to upgrade a diesel oil sample from Shiraz Oil Refining Co. (SORC) to reduce the sulfur content, as well as break the kinematic viscosity of the feedstock. Effects of several operating parameters including volume of hydrogen peroxide/acetic acid as an oxidant mixture, amounts of tetraoctylammonium bromide as a phase transfer agent (PTA) and phosphotungstic aci...
[ 5 ] - Minimum Miscibility Pressure Using the Multiple Mixing-cell Combined with the PC-SAFT Equation of State
The minimum miscibility pressure (MMP) is one of the crucial and substantial parameters in the gas injection projects for enhanced oil recovery (EOR). This parameter indicates the minimum pressure at constant temperature and composition conditions for reaching 100 percent of the oil production recovery which leads to a huge economic income. Therefore, an inaccurate prediction of the MMP may lea...
[ 6 ] - بهینه‌سازی بازیافت خاک رنگبر مستعمل با استفاده از دی‌اکسید‌کربن فوق‌بحرانی به روش سطح پاسخ
رنگبری با استفاده از خاک رنگبر یکی از فرآیندهای اساسی در تصفیه روغن‌های خوراکی می‌باشد. خاک رنگبر مستعمل حاصله محتوی 20 تا 40 درصد وزنی روغن می‌باشد، بنابراین آماده برای اکسیداسیون سریع و اشتعال می‌باشد. برای جلوگیری از مشکلات زیست محیطی، ضروری است فرآوری مناسبی ر...
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