摘要:
Retrievable valve apparatus for lightening oil being gas lifted through a tubing string. The apparatus includes a valve body having a fishing neck which projects upwardly within the tubing string and valve means proper carried by the body for selectively communicating the tubing string interior with a pressurized gas supply to inject gas into the oil upwardly past the fishing neck in response to a predetermined pressure of oil lifted in the tubing string above the apparatus, the valve body being provided with a port to pass the pressurized gas into the body when the body is selectively positioned within the string.
摘要:
A vending machine installation includes a misting accessory which discharges an evaporative cooling mist and is provided for interactive operation by a customer purchasing a product. The misting accessory is disposed above the vending machine or machines and includes a mist nozzle assembly within a simulated beverage bottle surrounded by a simulated bed of ice. Also provided is a sound generator for simulating the sound of gas escaping from the opening of the container of the beverage in response to vend signals generated by the customer operating the machine. The sound generator and the mister are initiated simultaneously. The simulated beverage bottle may be provided with a hinged bottle cap which flips open during operation of the mister. A pavilion incorporating vending machines and an array of misting nozzle assemblies provides evaporative cooling to persons within the pavilion. The vending machine installation and the pavilion employ nozzle assemblies which discharge an evaporative cooling mist formed by combining a water/air mist and an air delivery current.