Supercritical multiple thermal fluid generating device capable of being directly used for heavy oil thermal recovery

Abstract

The invention discloses a supercritical multiple thermal fluid generating device capable of being directly used for heavy oil thermal recovery. The supercritical multiple thermal fluid generating device comprises a generator end cover, a mixing barrel and a reactor wall, wherein a water cooling end cover is arranged on the reactor end cover, cooling water is injected to protect the reactor end cover from overtemperature, a cooling water channel is further arranged on the reactor end cover to protect a flame monitor, a nozzle platform is arranged at the bottom of the reactor end cover, is provided with an oxidant spiral nozzle, and is in threaded connection with an atomizing nozzle to ensure that fuel and the oxidant are uniformly mixed, a secondary fuel channel is further arranged in a combustion chamber, crude oil can be directly injected into the combustion chamber, the problems of coking and carbon deposition in the fuel preheating process are solved, water in an annular cooling channel flows downwards to cool the combustion chamber, then enters a cooling and mixing channel and is mixed with reaction fluid flowing out of a mixing barrel outlet hole group, and the temperature control target is achieved. A combustion chamber middle necking structure, a combustion chamber bottom necking structure, the mixing barrel outlet hole group and the like can achieve the purpose of pressure control.

Description

technical field [0001] The invention belongs to the technical field of energy exploitation, and in particular relates to a supercritical multi-element thermal fluid generating device which can be directly used for thermal recovery of heavy oil. Background technique [0002] At present, the main production methods of heavy oil fields are steam huff and puff, steam flooding, steam-assisted gravity drainage and other thermal recovery methods. This thermal recovery method is mainly to inject the hot steam generated by the surface steam injection boiler into the formation to increase the formation temperature, reduce the viscosity of heavy oil, increase the fluidity of heavy oil, and achieve the purpose of improving the recovery of heavy oil. Conventional steam injection technology has been very mature, but it still cannot solve the problems of environmental pollution, large heat loss, limited applicable reservoir depth, and too large device volume for offshore heavy oil producti...

AI Technical Summary

Problems solved by technology

Use the secondary fuel port to inject crude oil or other cold temperature fuels with higher flow and concentration, which not only ensures the power of the combustion chamber, but also solves the problem of coking and carbon deposition that may be encountered during the preheating process

Images