Waxy crude oil is characterized by high pour point and poor flow properties, which bring great difficulty to the oil exploitation and transportation. In this study, the fluidity of waxy crude oil with the pour
Based on the self-development crude oil depressurization foaming device and the CO2 flooding crude oil, this paper studies the evolution of foam and analyzes the function mechanism of asphaltene and wax crystal on defoaming and drainage of crude oil quantitatively. The experimental results show a ...
However, the role of the dispersant Corexit in mediating oil-sedimentation is still controversial. Here we demonstrate that the formation of diatom MOS is enhanced by chemically undispersed oil, but inhibited by Corexit-dispersed oil. Nevertheless, the sedimentation rate of oil may at times be ...
But, application of dispersants would enhance the formation of plumes of dispersed crude oil after oil slicks5, which may foster the ingestion of crude oil droplets by heterotrophic dinofla- gellates. In turn, heterotrophic dinoflagellate cells containing crude oil can be prey for consumers, such ...
What was the origin of the oil which now drives our motor-cars and aircraft?Scientists are confident about the formation of coal,but they do not seem so sure when asked about oil. 我们现在开汽车、开飞机使用的油是怎样形成的呢?科学家确知煤是怎样形成的...
1.Which of the following is true about petroleum formation? A. Microscopic organisms that live in mud produce crude oil and natural gas. B. Large amounts of oxygen are needed for petroleum formation to begin. C. Petroleum is formed when organic material in sediments combines with decaying orga...
In the event of oil spills in the marine environment, oil undergoes a number of weathering processes altering the physical and chemical nature of the oil. One of the most important processes in weathering is the formation of oil-in-water dispersions, as this increases the surface to volume rat...
The sulphur emissive capability, on combustion, of coke which is formed during upgrading of sulphur-containing heavy crude oils, including oil sands bitumen, and residua, is decreased by the addition of calcium carbonate, preferably in the form of limestone, to the heavy crude oil prior to coki...
Heavy oil resource abundance in Junggar Basin, but the inherent laws and chemical molecular characteristics of crude oil are diverse in different regions. The origin and understanding of heavy oil in Pingdiquan Formation of Permian system in the eastern of Junggar Basin are not clear, which ...
An improvement of the flow properties of paraffin-containing crude oil, more specifically, a means of favourably influencing the pour point of crude oil and hence improving the flow