ROTATING MANDREL CASING HANGERS

摘要

Rotating mandrel casing hangers are provided. In some embodiments, a system includes a casing hanger (22, 32, 76, 122, 152, 192, 242, 292, 350) having a lower end configured to engage a casing string (26, 86, 282) and a running tool (34, 78, 124, 194, 244, 296, 370) configured to engage the casing hanger. The system is configured to facilitate rotation of the casing hanger within a casing head (18, 48, 132, 156, 280, 330, 390) to rotate the casing string while cementing the casing string within a well (14). Additional systems, devices, and methods are also disclosed.