With this quarternary combinational demulsifier,the dehydration efficiency for Heidimiao viscous crude oil increases with raising temperature(60—80℃) at dosage 100 mg/L and goes through a maximum at dosage 150 mg/L with increasing dosage(100—200 mg/L) at 70℃.
Result Separate and clean oiland water can be achieved by dehydration of super viscous crude oil mixed with a certain proportion(8: 2, 7: 3 ) of diluent and adding a certain amount (200~300 mg/L) demulsifier LH-2, RS-2 and precipitated for 12 h and & h.
Horizontal steam huff andpuff as well as steam drive could be adopted in super viscous crude oil reservoir that thethickness of oil zone is 5-10 m and in extra viscous crude oil reservoir that the thickness ofoil zone is over 10 m;
Using SBR activated sludge technology to dispose the viscous oil sewage of oilfield is feasible,the COD of viscous oil sewage can be reduced to below 150 mg·L~(-1),reach the secondary class standard of GB 8978-1996 sewage emission.
When total petroleum hydrocarbons, which consist of thin oil, high condensation oil, special viscous oil, and viscous oil, were in the range of 25.8～77.2g·kg -1 dry soil, the petroleum removal rate could reach 38.37～56.74% by 2 months operation.
The degradation rates of Phanerochaete Chrysoporium, Cviolus versicolor, Trichoderma sp., Cunninghamella sp., Aspergillus sp., and Fusarium sp. for heavy thick oil were 20.40%, 19.14%, 22.46%, 15.88%, 16.48%and 14.95%, respectively.
It was demonstrated that the fraction composition of residual oil changed and both light and heavy oil fractions were degraded.
Sorption of heavy oil by swollen graphites obtained from residual graphite hydrosulfate at 300- 900°C was studied.
The kinetics of oxidation of naphthalene and a heavy oil residue (upon vacuum distillation) by oxygen dissolved in supercritical water is studied in a wide range of temperatures (663 K≤T≤1075 K) and pressures (31MPa≤P≤67MPa).
This paper studied the influence of steam on heavy oil catalytic pyrolysis.
Investigation of the optimization of the feedstock composition on delayed coking units (UZK 21-10/3M) at the Angarsk Petrochemical Company using the introduction of different heavy oil residues and by-products of petroleum chemistry was carried out.
Possibility of the development of a high-viscous oil reservoir by water flooding
The development of high-viscous oil resources of petroleum fields
Flow of viscous oil in the volute of a centrifugal pump
The flows of water as well as viscous oil in the three rectangular sections of the volute of a centrifugal pump are measured by using a two-dimensional laser Doppler velocimetry(LDV) in the best efficiency and part-loading points, respectively.
The flow of water or viscous oil in the volute is diffused in both best efficiency point and part-loading points.
Discovery of mega-thick oil sandstone and asphalt in the Jurassic System in the Tula Basin and its significance
The mega-thick oil-bearing sandstone has been discovered in the Jurassic System in the Tula Basin, among which there are asphalt veins in fractures.
The occurrence of interbeds in thick oil formations in one of the main reasons that cause the difference of remaining oil distribution.
Spatially, heavy thick oil reservoirs are distributed regularly: they usually show some paragenetic relationships with normal oil reservoirs.
The problem of segregation of a two-phase multicomponent mixture under the action of thermal gradient, gravity and capillary forces is studied with respect to component distribution in a thick oil-gas-condensate reservoir.