The steam?assisted gravity drainage(SAGD) process with various types of well configurations has been successful for recovering it.

各种布井方式的蒸汽辅助重力泄油开采这类稠油已获成功。

youdao

While the retrofit system is applicable to most production scenarios, it has found the most applications to date in steam-assisted gravity drainage (SAGD) Wells.

该装置可以用于多种生产情况，但是其在蒸汽辅助重力泄油(SAGD)系统中使用时效率最高。

youdao

Steam Assisted Gravity Drainage (SAGD) pumps steam into the ground to liquefy the bitumen and stiff crude oil, making it thin enough to be pulled out of the ground.

FORBES: Has The Gulf Spill Opened Pandora's Box For Obama?

Edwards aims to use a newer method called steam-assisted gravity drainage.

FORBES: The World's Billionaires