scholarly journals Efficiency Sorbents Comparative Analysis for Heavy Oil Products in the Conditions of Low Temperatures

2019 ◽  
Vol 272 ◽  
pp. 032116 ◽  
Author(s):  
Ya Yu Blinovskaya
Keyword(s):  
Comparative Analysis ◽  
Heavy Oil ◽  
Low Temperatures ◽  
Oil Products

Comparative Analysis of Transformations of Heavy Oil Feedstock Model Components under Cracking Conditions in the presence of Metaland Acid Catalysts

2021 ◽  
Vol 56 (6) ◽  
pp. 878-884
Author(s):  
N. M. Maximov ◽  
A. A. Zurnina ◽  
I. S. Dokuchaev ◽  
P. S. Solmanov ◽  
Yu. V. Eremina ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Heavy Oil ◽  
Acid Catalysts ◽  
Model Components

Study of Rheological Properties of Cariphalte Modified Asphalt

2014 ◽  
Vol 638-640 ◽  
pp. 1185-1189
Author(s):  
Tan Hua
Keyword(s):  
Comparative Analysis ◽  
Rheological Properties ◽  
Fatigue Damage ◽  
Systematic Study ◽  
Low Temperatures ◽  
Permanent Deformation ◽  
Asphalt Binder ◽  
Fatigue Properties ◽  
Dynamic Shear ◽  
Modified Asphalt

To explore the effects of different factors on the rheological properties of cariphalte modified asphalt, based superpave asphalt binder relevant norms, through the use of dynamic shear rheometer Shell 70# asphalt under different temperature, frequency and strain conditions and rheological properties of cariphalte modified asphalt carrying on a systematic study, and comparative analysis of the two anti-fatigue properties of asphalt in the middle and low temperature.The results show that: compared with 70# asphalt, cariphalte modified asphalt has better rutting resistance over a wide temperature range; at lower frequencies and high intensity pavement, cariphalte modified asphalt to better resistance to permanent deformation; better fatigue resistance at low temperatures, and more fatigue damage is not easy to achieve.

Research and Application of Drag Reducer for Oil Products

2008 ◽  
Author(s):  
Zhongyuan Guan ◽  
Jinghua Liang ◽  
Chunyang Liu ◽  
Weichun Chang ◽  
Feng Zhu ◽  
...  
Keyword(s):  
Crude Oil ◽  
Energy Saving ◽  
Flow Rate ◽  
Low Temperatures ◽  
Bulk Polymerization ◽  
Oil Products ◽  
Chemical Additive ◽  
Manual Operation ◽  
Products Pipeline ◽  
Equipment System

Taking the exact demands of chemical additive components added in oil products into account, it is necessary to prepare a drag reducer both with desirable functions and pure composition for oil products differing from that for crude oil. However, that is evidently difficult. This article presents the research and application of a newly-developed drag reducer for oil products, which is innocuous to oil products and easy to handle in its applications. The preparation of the drag reducer was based upon a series of integrative techniques involving adsorbent purification of monomers, implementation of bulk polymerization at low temperatures and ultramicro grinding of polyalphaolefins at normal temperatures. Simultaneously, the drag reducer can be manufactured in different scales by purpose-made equipment system with a little manual operation on safe, reliable, efficient and convenient base. The application test of the drag reducer was conducted successfully and has been commercially applied in Lanzhou-Chengdu-Chongqing Oil Products Pipeline. The application results for the pipeline showed that this drag reducer, as a feasible and available technical method, was not only positively helpful to increase the flow rate of Lanzhou-Chengdu-Chongqing Oil Products Pipeline, but also of great significance for other oil products pipelines in throughput increase and energy saving.

scholarly journals Timing of oil expulsion from source rocks and a revitalization of the pre-1970 model

2021 ◽  
Author(s):  
Per Arne Bjørkum
Keyword(s):  
Organic Matter ◽  
Source Rock ◽  
Heavy Oil ◽  
Low Temperatures ◽  
Upper Jurassic ◽  
Hydrogen Gas ◽  
Source Rocks ◽  
Co2 Gas ◽  
Chemical Attributes ◽  
Oil Expulsion

New data from North Sea Upper Jurassic source rock samples show no decline in the total amount of organic matter (TOC) within the oil expulsion window between 120 and 150°C which is a key prediction by today’s model for oil expulsion. However, today’s model for oil expulsion is not consistent with either subsurface source rock TOC data or chemical attributes of shallow oils. Instead, these data are more consistent with oil expulsion occurring at much lower temperatures and shallower depths, more similar to models advocated by most oil explorers prior to 1970 where the oil was assumed to have expelled at burial depths less than ~2km. In this paper, main oil expulsion has been determined to be take place at burial depths less than 1km and approximately 30°C. The oil is mobilized by CO2 gas which is generated from decomposing organic matter and is predicted to migrate out of the source rock and into nearby high-permeable rocks via horizontal fractures that originate from loadbearing swelling organic lamina and in a direction towards decreasing overburden. The thermally immature (heavy) oil is then converted to light crude within the reservoir oil starting at 60-70°C by hydrogenation. Hydrogen gas is common in subsurface fluids and is provided to pooled oil from coalification of organic matter in mudstones. Thus, if the supply of hydrogen is limited, in-reservoir thermal upgrading will be hampered. In this model, most of the heavy oil accumulations encountered are immature rather than due to biodegradation of mature oil at low temperatures.

scholarly journals Comparative analysis between asphaltites and extra heavy oil asphaltenes

2020 ◽  
Vol 1708 ◽  
pp. 012007
Author(s):  
N Bustos ◽  
E Diaz ◽  
E Jerez ◽  
M Roa
Keyword(s):  
Comparative Analysis ◽  
Heavy Oil

On the question of the required foam expansion ratio for sublayer extinguishing of oil and oil products fires in vertical steel tanks

2021 ◽  
pp. 12-18
Author(s):  
Виктор Павлович Молчанов ◽  
Денис Леонидович Бастриков ◽  
Сергей Александрович Макаров ◽  
Александр Николаевич Фещенко ◽  
Алексей Владимирович Третьяков ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Expansion Ratio ◽  
Back Pressure ◽  
Oil Products ◽  
Flammable Liquid ◽  
Buoyant Force ◽  
Foam Expansion ◽  
Fire Extinguishing ◽  
High Octane ◽  
Oil And Oil Products

Возможность эффективного тушения резервуаров подслойным способом во многом зависит от подъема пены на поверхность горючей жидкости. Критически рассмотрены существующие методики испытаний высоконапорных пеногенераторов для подслойного пожаротушения. Предложены расчетные формулы для определения величины минимальной кратности пены, способной к подъему, в зависимости от состава и плотности горючей жидкости, высоты столба горючей жидкости, типа используемого пенообразователя. Обоснованы условия применения существующих систем подслойного пожаротушения для резервуаров с различной высотой стенки. During the certification tests of high-pressure foam generators for sublayer oil and oil products fire extinguishing in the tanks there is created a conditional back pressure at the generator output, and the foam expansion ratio is measured when this back pressure is no longer present. In accordance with the standardized methodology the foam expansion ratio is measured in the measuring container by weight. The derived foam after passing throughout the pipeline is supplied to the measuring container where the foam expansion ratio is measured under the atmospheric pressure. In practice, during fire extinguishing the flammable liquid exerts a constant excess pressure on the formed foam. The expansion ratio of the foam decreases in proportion to the pressure value of the column. As a result, the foam expansion ratio can reduce to a value when the Archimedean buoyant force no longer occurs. In this case, the foam cannot be supplied to the surface of the flammable liquid and the fire cannot be extinguished. The back pressure created at the tank base depends on the height of the tank wall (level of the liquid fuel filling) and on its density. Foam rise is possible if the foam density is lower than the fuel density. Light oil products extinguishing requires greater expansion ratio foam than heavy oil products extinguishing. At the same time, heavy oil products cause greater back pressure and a decrease in the foam expansion ratio. Alcohols in the composition of modern high-octane gasolines produce an additional defoaming effect on the foam, which questions the feasibility of using a sublayer fire extinguishing system of modern high-octane gasolines. The article evaluates a set of parameters that affect the required foam expansion ratio for sublayer extinguishing of oil and oil products fires in tanks and justifies the minimum value of its expansion ratio.

A Comparative Analysis of Vanadyl Porphyrins Isolated from Heavy Oil Asphaltenes with High and Low Vanadium Content

2022 ◽  
Author(s):  
S. G. Yakubova ◽  
G. R. Abilova ◽  
E. G. Tazeeva ◽  
D. I. Tazeev ◽  
N. A. Mironov ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Heavy Oil ◽  
Vanadium Content
Sign in / Sign up

Export Citation Format

Share Document