Abstract: Well casing heads are provided that can include: a housing defining a first opening at the first end and a second opening at the second end, the first diameter of the first opening being greater than the second diameter of the second opening; and at least one fluid passageway extending through a wall of the housing and into the second opening. Well casing systems within a wall of an underground platform are also provided. The systems can include: a well casing head; a pair of tubular members about each other extending from the well casing head into a wall of the platform; and a void between the two members, the void extending from within the underground platform to the at least one fluid passageway of the well casing head. Methods for removing fluid from earth about an underground platform are also provided.

Abstract: Well casing assemblies are provided that can include at least one casing extending between two ends; another casing surrounding the one casing and extending between the two ends, the one and the other casing defining a void there between. Well casing systems within a wall of an underground platform are also provided. The system can include a pair of tubular members about each other extending upwardly from within the platform into a wall of the platform. Methods for setting casing in an underground platform are also provided. The methods can include extending a well upwardly to within a wall of the underground platform and providing fluid cement to within the well. The method can further include curing the cement to form a casing within the well.