Casing hanger compression ring system

Abstract

A compression seal for a piece of oil and gas equipment includes a first segment and a second segment of the seal, a cut defined by the separation in the seal between the first segment and the second segment of the seal, and an interface formable at the cut when a first face of the first segment and a second face of the second segment make contact, wherein the interface increases a surface area of contact between the first segment and the second segment.

What is claimed is: 
     
         1 . A seal for a piece of oil and gas equipment, comprising:
 a first segment of the seal;   a second segment of the seal;   a cut defined by a separation in the seal between the first segment and the second segment of the seal; and   an interface formable at the cut when a first face of the first segment and a second face of the second segment make contact, wherein the interface increases a surface area of contact between the first segment and the second segment.   
     
     
         2 . The seal of  claim 1 , wherein the first segment of the seal comprises one or more fastener apertures, and wherein the second segment of the seal comprises one or more fastener apertures. 
     
     
         3 . The seal of  claim 1 , wherein the first face of the first segment comprises one or more recesses, and wherein the second face of the second segment comprises one or more protrusions, the one or more protrusions configured to fit at least partially within the one or more recesses. 
     
     
         4 . The seal of  claim 1 , wherein the first face of the first segment comprises one or more first grooves, and wherein the second face of the second segment comprises one or more second grooves, the one or more first grooves of the first face configured to intermesh with the one or more second grooves of the second face. 
     
     
         5 . The seal of  claim 1 , wherein the interface comprises one or more interface members positioned between the first face of the first segment and the second face of the second segment. 
     
     
         6 . The seal of  claim 1 , wherein the first face of the first segment comprises a parabolic shape, and wherein the second face of the second segment comprises a parabolic shape, the first face configured to be flush with the second face. 
     
     
         7 . The seal of  claim 1 , where the first face of the first segment comprises one or more first teeth, and wherein the second face of the second segment comprises one or more second teeth, the first teeth of the first segment configured to intermesh with the second teeth of the second segment. 
     
     
         8 . The seal of  claim 1 , wherein the first face of the first segment comprises a first angled surface and a second angled surface, the second face of the second segment comprises a third angled surface and a fourth angled surface, the first angled surface is configured to make contact with the third angled surface, and the second angled surface is configured to be flush with the fourth angled surface. 
     
     
         9 . The seal of  claim 8 , wherein the first face of the first segment further comprises a first flat surface positioned between the first angled surface and the second angled surface, the second face of the second segment further comprises a second flat surface positioned between the third angled surface and the fourth angled surface, and the first flat surface is configured to be flush with the second flat surface. 
     
     
         10 . The seal of  claim 9 , wherein the first angled surface and the third angled surface are adjacent to a top of the first segment and the second segment, and the second angled surface and the fourth angled surface are adjacent to a bottom of the first segment and the second segment. 
     
     
         11 . The seal of  claim 9 , wherein the first angled surface and the second angled surface are adjacent to first external sides of the first segment, and the third angled surface and the fourth angled surface are adjacent to second external sides of the second segment. 
     
     
         12 . A casing hanger assembly, comprising:
 a casing hanger housing having a bore extending along a casing hanger axis;   one or more top plates axially aligned with the casing hanger housing along the casing hanger axis;   one or more bottom plates axially aligned with the casing hanger housing along the casing hanger axis;   a seal axially aligned with the casing hanger housing along the casing hanger axis and positioned between the one or more top plates and the one or more bottom plates, the seal comprising:
 a first segment of the seal; 
 a second segment of the seal; 
 a cut defined by a separation in the seal between the first segment and the second segment of the seal; and 
 an interface formable at the cut when a first face of the first segment and a second face of the second segment make contact, wherein the interface increases a surface area of contact between the first segment and the second segment; and 
   one or more fasteners configured to secure the seal between the one or more top plates and the one or more bottom plates.   
     
     
         13 . The casing hanger assembly of  claim 12 , wherein the first segment of the seal comprises one or more fastener apertures, and wherein the second segment of the seal comprises one or more fastener apertures. 
     
     
         14 . The casing hanger assembly of  claim 12 , wherein the first face of the first segment of the seal comprises one or more recesses, and wherein the second face of the second segment of the seal comprises one or more protrusions, the one or more protrusions configured to fit at least partially within the one or more recesses. 
     
     
         15 . The casing hanger assembly of  claim 12 , wherein the first face of the first segment of the seal comprises one or more first grooves, and wherein the second face of the second segment of the seal comprises one or more second grooves, the one or more first grooves of the first face configured to intermesh with the one or more second grooves of the second face. 
     
     
         16 . The casing hanger assembly of  claim 12 , wherein the interface of the seal comprises one or more interface members positioned between the first face of the first segment of the seal and the second face of the second segment of the seal. 
     
     
         17 . The casing hanger assembly of  claim 12 , wherein the first face of the first segment of the seal comprises a parabolic shape, and wherein the second face of the second segment of the seal comprises a parabolic shape, the first face configured to be flush with the second face. 
     
     
         18 . The casing hanger assembly of  claim 12 , where the first face of the first segment of the seal comprises one or more first teeth, and wherein the second face of the second segment of the seal comprises one or more second teeth, the first teeth of the first segment configured to intermesh with the second teeth of the second segment. 
     
     
         19 . The casing hanger assembly of  claim 12 , wherein the first face of the first segment comprises a first angled surface and a second angled surface, the second face of the second segment comprises a third angled surface and a fourth angled surface, the first angled surface is configured to make contact with the third angled surface, and the second angled surface is configured to be flush with the fourth angled surface. 
     
     
         20 . The casing hanger assembly of  claim 19 , wherein the first face of the first segment further comprises a first flat surface positioned between the first angled surface and the second angled surface, the second face of the second segment further comprises a second flat surface positioned between the third angled surface and the fourth angled surface, and the first flat surface is configured to be flush with the second flat surface.