نتایج جستجو برای: urea assisted steam flooding

تعداد نتایج: 200914  

2007
R. J. Norman D. L. Frizzell C. E. Wilson

Agrotain has shown in previous studies on silt loam soils to be much less prone to ammonia volatilization loss and to result in higher rice-grain yields compared to urea when the flood cannot be applied immediately after nitrogen (N) fertilizer application. However, no research has been conducted to determine if Agrotain is superior to urea as an N source for rice grown on clay soils, which vol...

2004
CHUNG-YUN HSE ROBERT L. GEIMER W. ERNEST HSU R. C. TANG

Six potentially important wood adhesives for gluing southern pine and white oak flakeboards were evaluated for their perfonnances in steam-injection pressing and conventional platen pressing. Of the six resins tested, polyisocyanate resin perfonned well in both steam injection and conventional platen pressings. Phenol-fonnaldehyde (PF) and melamine urea-fonnaldehyde (MUF) resins perfonned poorl...

Journal: :Scientific Contributions Oil & Gas 2022

Applications of Enhanced Oil Recovery (EOR) are highly required and needed in Sudan to keep oil supply at stable levels. ”FUL” Oilfield has shallow reservoir affected by big boundary bottom water drive with high crude viscosity. This research, through a comprehensive analysis the current producing wells, perforation intervals, CO2 temperature analysis, steam parameters optimization which using ...

Journal: :Journal of animal science 2003
R A Zinn R Barrajas M Montano R A Ware

Four Holstein steers (282 kg) with cannulas in the rumen and proximal duodenum were used in a 4 x 4 Latin square experiment to evaluate the influence of dietary urea level (0, 0.4, 0.8, and 1.2%, DM basis) in a steam-flaked barley-based finishing diet on digestive function. There were no treatment effects (P > 0.20) on ruminal digestion of OM and ADF. Increasing dietary urea level increased (li...

2012

In this paper, Steam Assisted Gravity Drainage (SAGD) is introduced and its advantages over ordinary steam injection is demonstrated. A simple simulation model is built and three scenarios of natural production, ordinary steam injection, and SAGD are compared in terms of their cumulative oil production and cumulative oil steam ratio. The results show that SAGD can significantly enhance oil prod...

2006
R. J. Norman J. T. Bushong

The preflood nitrogen (N) fertilizer sets the yield potential of the rice cultivars being grown and thus, its management is critical to obtaining profitable rice grain yields. The objectives of this study were to evaluate the ammonia volatilization loss and impact on rice yield when urea, Agrotain®, and ammonium sulfate were applied preflood and a flood established at 1, 5, and 10 days after N ...

Journal: :FEMS microbiology ecology 2015
Ning Wang Long-Jun Ding Hui-Juan Xu Hong-Bo Li Jian-Qiang Su Yong-Guan Zhu

Fertilization affects bacterial communities and element biogeochemical cycling in flooded paddy soils and the effect might differ among soil types. In this study, five paddy soils from Southern China were subjected to urea addition to explore impacts of fertilization on nitrogen oxide (N2O) emission and bacterial community composition under the flooding condition. 16S rRNA gene-based illumina s...

Journal: :Energies 2022

Steam flooding is crucial for the development of heavy oil reservoirs, and steam cavity significantly determines efficiency flooding. Previous studies have elucidated concept overburden pseudomobility ratio; however, thermal energy loss in deep reservoirs during injection needs further investigation. Therefore, this study, vapour–liquid interface theory mathematical integration were used to est...

Journal: :Journal of physics 2023

Abstract Steam flooding is an effective method to enhance oil recovery in heavy reservoirs. However, the influence factors of steam will affect development reservoir after traditional water flooding. So dynamic prediction needs be performed before scheme implemented. In this study, 3D model was established by numerical simulation software CMG; Combined with operating parameters oilfield, temper...

Journal: :Journal of animal science 2016
R S Marques L J Chagas F N Owens F A P Santos

Performance responses to steam flaking flint corn as well as to the addition of roughage to finishing diets composed of whole flint corn were evaluated. Ninety-six Nellore bulls were stratified by initial BW (373 ± 11 kg) and randomly allotted to 16 feedlot pens (6 bulls/pen) in a randomized complete block design with 4 replicates/treatment. Dietary treatments for the 86-d feeding trial consist...

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