Well Casing Assemblies, Systems, and Methods for Setting Casing in Underground Platforms

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.

1 . A well casing assembly comprising:
 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; and   a flange extending from the other casing, the flange defining a space therein, the space of the flange being in fluid communication with the void defined between the casings.   
     
     
         2 . The well casing assembly of  claim 1  wherein the flange comprises at least two portions, one portion engaging the one casing and another portion engaging the other casing. 
     
     
         3 . The well casing assembly of  claim 1  further comprising packing members extending between the one casing and the flange. 
     
     
         4 . The well casing assembly of  claim 3  wherein the packing members engage an outer portion of the flange. 
     
     
         5 . The well casing assembly of  claim 1  wherein the flange defines an opening extending to the space. 
     
     
         6 . The well casing assembly of  claim 5  further comprising a fitting coupled to the opening, the fitting being configured to receive liquid cement. 
     
     
         7 . The well casing assembly of  claim 1  further comprising a pressure gauge operably coupled to the flange. 
     
     
         8 . A well casing system within a wall of an underground platform, the system comprising:
 a pair of tubular members about each other extending upwardly from within the platform into a wall of the platform;   a void between the two members, the void extending from within the underground platform to within the wall of the platform; and   an opening within one of the pair of tubular members, the opening in fluid communication with the void.   
     
     
         9 . The well casing system of  claim 8  wherein the members extend from within the platform to within the wall of the platform at an angle greater than zero and less than 90 degrees. 
     
     
         10 . The well casing system of  claim 9  wherein at least one of the members has an entrance within the platform and an exit beyond the wall of the platform, the entrance being at a lower elevation in relation to the exit. 
     
     
         11 . The well casing system of  claim 9  wherein at least one of the pair of tubular members engages the wall of the platform 
     
     
         12 . The well casing system of  claim 9  further comprising a flange within the platform, the flange engaging at least one of the pair of members. 
     
     
         13 . The well casing system of  claim 12  wherein the flange defines a space therein, the space being in fluid communication with the void between the members. 
     
     
         14 . The well casing system of  claim 13  wherein the flange comprises a surface having opposing walls extending therefrom, the surface and walls defining the space therein. 
     
     
         15 . The well casing system of  claim 14  further comprising a fixture extending from the surface and in fluid communication with the space. 
     
     
         16 . A method for setting casing in an underground platform, the method comprising:
 extending a well upwardly to within a wall of the underground platform; and   providing fluid cement to the well; and   curing the cement to form a casing within the well.   
     
     
         17 . The method of  claim 16  further comprising providing a pair of tubular members to within the well, the providing the fluid cement comprising providing the fluid cement to within a void defined between the pair of tubular members. 
     
     
         18 . The method of  claim 17  further comprising providing a flange operatively engaged with at least one of the tubular members and providing the fluid cement to within the flange. 
     
     
         19 . The method of  claim 18  further comprising measuring the pressure within the void while providing the fluid cement. 
     
     
         20 . The method of  claim 16  further comprising extending a tubular member to within the casing within the well.