Pressurizing mixed-conveying device of oil field associated gas and recovering method thereof

The invention discloses a pressurizing mixed-conveying device of oil field associated gas, which comprises an associated gas conveying tube connected with an associated gas bypass tube, and the associated gas bypass tube is connected with an oil conveying tube. The associated gas conveying tube is connected with an oil and gas mixer, the oil and gas mixer is connected with a compressor which is respectively connected with a lubricating device and the associated gas bypass tube, and the oil conveying tube is connected with the oil gas mixer through a buffer pool. A revering method of the oil field associated gas includes that: mixing the associated gas escaped form an oil field with all or partial crude oil from a mouth of a well and filling the mixed gas and oil into the oil conveying tube. Then the associated gas is conveyed to a collecting and conveying station along with the crude oil. The pressurizing mixed-conveying device of oil field associated gas and the recovering method of the oil field associated