Reviving a hydrocarbon well utilizing gas injection ports

A method for unloading a wellbore, comprising:

• installing a portable gas injection system adjacent a production workstring that extends in a wellbore from a terranean surface to a reservoir formation, the production workstring comprising a downhole tool coupled within the production workstring, the downhole tool comprising:
• a mandrel that comprises a top connection connected to the production string and a bottom connection connected to the production workstring to fluidly couple the mandrel to the production string,
• at least one gas injection port that fluidly couples the mandrel to an annulus of the wellbore, and
• a valve positioned to control a flow of a fluid from the annulus into the mandrel through the gas injection port;
• operating the portable gas injection system to supply the fluid to the annulus to reduce a hydrostatic pressure of a wellbore fluid enclosed within at least one of the annulus or the production workstring;
• and
• logging the wellbore by moving a logging tool through the production workstring during operating the portable gas injection system to supply the fluid to the annulus to reduce the hydrostatic pressure of the wellbore fluid enclosed within the at least one of the annulus or the production workstring.