At the Long Lake project it uses steam assisted gravity drainage to upgrade oil.

Production was from tunnels dug into the face of a cliff, and produced by gravity drainage.

Discharge to the Trent was subsequently moved to Keadby, and the gravity drainage was supplemented by pumps when a pumping station was built in 1940.

The only available method of development was to fill these salt lakes to a higher level which would permit gravity drainage through the nearby channels.

It was started in order to develop the Long Lake site using steam-assisted gravity drainage and the OrCrude process for on-site upgrading.

Alternately, a separate "condensate pump" may be used to move collected water to a disposal location when gravity drainage is not possible.

An increasingly successful system now in use is steam assisted gravity drainage (SAGD).

Imperial also uses steam-assisted gravity drainage.

At the moisture content of specific yield, gravity drainage will cease.

The reservoir drive is a combination of weak aquifer drive on the south flank, solution gas expansion, and gravity drainage.