2013年7月30日星期二

thermal drive oil

Heat oil flooding include steam injection (steam stimulation and steam flooding two processes), burning oil and thermochemical oil. Note the use of steam and burning oil are heated by the heat reservoir and the fluid in the reservoir to reduce the viscosity of crude oil to reduce oil flow resistance. The difference is on the ground steam generator to produce steam, oil pipelines and through the ground into the reservoir, and the heat of burning Food dehydrator formation is in the internally generated. This is based on how and where to generate heat and distinction.
?Steam flooding (water flooding) steam flooding is the steam from the injection well into the reservoir, and the steam will push heavy thinning oil production wells as a method by reducing the viscosity of crude oil, thermal expansion, steam distillation, steam drive and the relative permeability and wettability changes to improve oil recovery. Steam flooding biggest problem is steam overlay and early breakthrough, the injected steam and crude oil increases the density difference between the fluids heterogeneity, especially seepage heterogeneity, resulting steam swept volume is small, making steam flooding of oil equipment efficiency receives an impact.
?ISC ISC method by injection of air in contact with the formation of crude oil, the use of artificial bottom spontaneous ignition or oil after ignition, the combustion of heavy oil portion of the oil layer, the heat generated in order to reduce oil viscosity, oil volume expansion, thereby driving formation oil EOR. Flooding with different steam injection, in situ combustion oil internally generated heat.

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