AQUATERMOLYSIS OF HEAVY OIL IN RESERVOIR CONDITIONS WITH THE USE OF ULTRADISPERSED CO-BASED CATALYST

2017 ◽  
Author(s):  
Sergey Sitnov
Keyword(s):  
Heavy Oil ◽  
Reservoir Conditions

Aquathermolysis of heavy oil in reservoir conditions with the use of oil-soluble catalysts: part I – changes in composition of saturated hydrocarbons

2018 ◽  
Vol 36 (21) ◽  
pp. 1829-1836 ◽  
Author(s):  
Аlexey V. Vakhin ◽  
Firdavs. A. Aliev ◽  
Sergey I. Kudryashov ◽  
Igor S. Afanasiev ◽  
Oleg V. Petrashov ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Saturated Hydrocarbons ◽  
Reservoir Conditions

scholarly journals The Research and Application of Microbial Degradation Technology on Heavy Oil Reservoir in Huabei Oilfield

2018 ◽  
Vol 38 ◽  
pp. 01054
Author(s):  
Guan Wang ◽  
Rui Wang ◽  
Yaxiu Fu ◽  
Lisha Duan ◽  
Xizhi Yuan ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Heavy Oil ◽  
High Surface ◽  
Effective Rate ◽  
Water Flooding ◽  
Oil Reservoir ◽  
Displacement Efficiency ◽  
Oil Viscosity ◽  
Reservoir Conditions ◽  
Heavy Oil Reservoir

Mengulin sandstone reservoir in Huabei oilfield is low- temperature heavy oil reservoir. Recently, it is at later stage of waterflooding development. The producing degree of water flooding is poor, and it is difficult to keep yield stable. To improve oilfield development effect, according to the characteristics of reservoir geology, microbial enhanced oil recovery to improve oil displacement efficiency is researched. 2 microbial strains suitable for the reservoir conditions were screened indoor. The growth characteristics of strains, compatibility and function mechanism with crude oil were studied. Results show that the screened strains have very strong ability to utilize petroleum hydrocarbon to grow and metabolize, can achieve the purpose of reducing oil viscosity, and can also produce biological molecules with high surface activity to reduce the oil-water interfacial tension. 9 oil wells had been chosen to carry on the pilot test of microbial stimulation, of which 7 wells became effective with better experiment results. The measures effective rate is 77.8%, the increased oil is 1,093.5 tons and the valid is up to 190 days.

Physical Simulation of Water Alternation Gas Technology at the Heavy Oil Carbonate Reservoir Conditions

2010 ◽  
Author(s):  
R.N. Diyashev ◽  
G.N. Piyakov ◽  
I.M. Iksanov ◽  
R.F. Gainetdinov ◽  
R.L. Rahimov ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Physical Simulation ◽  
Carbonate Reservoir ◽  
Reservoir Conditions

Phase behavior of C3H8–CO2–heavy oil systems in the presence of aqueous phase under reservoir conditions

Fuel ◽  
2017 ◽  
Vol 209 ◽  
pp. 358-370 ◽  
Author(s):  
Xiaoli Li ◽  
Haishui Han ◽  
Daoyong Yang ◽  
Xiaolei Liu ◽  
Jishun Qin
Keyword(s):  
Phase Behavior ◽  
Aqueous Phase ◽  
Heavy Oil ◽  
Reservoir Conditions

scholarly journals Phase behavior of heavy oil–solvent mixture systems under reservoir conditions

2020 ◽  
Vol 17 (6) ◽  
pp. 1683-1698 ◽  
Author(s):  
Xiao-Fei Sun ◽  
Zhao-Yao Song ◽  
Lin-Feng Cai ◽  
Yan-Yu Zhang ◽  
Peng Li
Keyword(s):  
Phase Behavior ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Solvent Mixture ◽  
Average Error ◽  
Asphaltene Precipitation ◽  
Reservoir Conditions ◽  
Application Potential ◽  
Promising Application

AbstractA novel experimental procedure was proposed to investigate the phase behavior of a solvent mixture (SM) (64 mol% CH4, 8 mol% CO2, and 28 mol% C3H8) with heavy oil. Then, a theoretical methodology was employed to estimate the phase behavior of the heavy oil–solvent mixture (HO–SM) systems with various mole fractions of SM. The experimental results show that as the mole fraction of SM increases, the saturation pressures and swelling factors of the HO–SM systems considerably increase, and the viscosities and densities of the HO–SM systems decrease. The heavy oil is upgraded in situ via asphaltene precipitation and SM dissolution. Therefore, the solvent-enriched oil phase at the top layer of reservoirs can easily be produced from the reservoir. The aforementioned results indicate that the SM has promising application potential for enhanced heavy oil recovery via solvent-based processes. The theoretical methodology can accurately predict the saturation pressures, swelling factors, and densities of HO–SM systems with various mole fractions of SM, with average error percentages of 1.77% for saturation pressures, 0.07% for swelling factors, and 0.07% for densities.

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