Abstract: Disclosed is a system for segmented simultaneous water injection and oil recovery through double pipes in horizontal section, comprising several packers, several oil-extracting mechanisms and several water-injection mechanisms, wherein each of the packers, each of the oil-extracting mechanisms, and each of the water-injection mechanisms has an injection channel and a production channel, when several packers, several oil-extracting mechanisms and several water-injection mechanisms are combined, each of the injection channels is connected in turn, and each of the production channels is also connected in turn, the oil-extracting mechanism can extract oil through the production channel, the water-injection mechanism can inject water through the injection channel. The beneficial effects of this disclosure include: the oil in the oil production section can be produced while the water injection section is injected with water.

Abstract: Disclosed are a fixing device and an image formation device. The fixing device includes first and second sensors used to respectively detect first and second temperatures; first and second calculators used to respectively calculate, during a process of starting a heating source, first and second temperature gradients; a parameter storage used to store at least first and second temperature gradient thresholds; a determination part used to get a determination result; an information generation part used to generate, based on the determination result, restart prompt information indicating that the image formation device needs to be restarted because the voltage of an electrical source is too low; and an information transmission part used to transmit the restart prompt information to a display device.

Abstract: Disclosed are a fixing device and an image formation device. The fixing device includes first and second sensors used to respectively detect first and second temperatures; first and second calculators used to respectively calculate, during a process of starting a heating source, first and second temperature gradients; a parameter storage used to store at least first and second temperature gradient thresholds; a determination part used to get a determination result; an information generation part used to generate, based on the determination result, restart prompt information indicating that the image formation device needs to be restarted because the voltage of an electrical source is too low; and an information transmission part used to transmit the restart prompt information to a display device.