An apparatus comprising: a conveyance device for connecting with a casing string having a plurality of casing joints coupled together via a plurality of casing collars, wherein the conveyance device comprises: a sleeve; and a plurality of rotatable members connected with the sleeve and extending from the sleeve in a radially outward direction; characterized in that: the sleeve comprises an inner surface defining a central bore configured to accommodate the casing string; the inner surface comprises a larger inner diameter portion and smaller inner diameter portions (522, 524) on opposing sides of the larger inner diameter portion; the larger inner diameter portion defines a channel extending circumferentially along the inner surface of the sleeve; a transition surface extends radially between each smaller inner diameter portion (522, 524) and the larger inner diameter portion; the channel is configured to accommodate an instance of the casing collars; the conveyance device comprises a first conveyance device half and a second conveyance device half; the first conveyance device half and the second conveyance device half are separable; the first conveyance device half and the second conveyance device half are connectable around the casing string such that the instance of the casing collars is within the channel; the conveyance device is configured to connect to the casing string by disposing the conveyance device around the casing string such that the casing string is within the central bore and the instance of the casing collars is within the channel; and each transition surface is configured to contact a corresponding shoulder of the instance of the casing collars to inhibit movement of the conveyance device longitudinally along the casing string. a conveyance device for connecting with a casing string having a plurality of casing joints coupled together via a plurality of casing collars, wherein the conveyance device comprises: a sleeve; and a plurality of rotatable members connected with the sleeve and extending from the sleeve in a radially outward direction; a sleeve; and a plurality of rotatable members connected with the sleeve and extending from the sleeve in a radially outward direction; characterized in that: the sleeve comprises an inner surface defining a central bore configured to accommodate the casing string; the inner surface comprises a larger inner diameter portion and smaller inner diameter portions (522, 524) on opposing sides of the larger inner diameter portion; the larger inner diameter portion defines a channel extending circumferentially along the inner surface of the sleeve; a transition surface extends radially between each smaller inner diameter portion (522, 524) and the larger inner diameter portion; the channel is configured to accommodate an instance of the casing collars; the conveyance device comprises a first conveyance device half and a second conveyance device half; the first conveyance device half and the second conveyance device half are separable; the first conveyance device half and the second conveyance device half are connectable around the casing string such that the instance of the casing collars is within the channel; the conveyance device is configured to connect to the casing string by disposing the conveyance device around the casing string such that the casing string is within the central bore and the instance of the casing collars is within the channel; and each transition surface is configured to contact a corresponding shoulder of the instance of the casing collars to inhibit movement of the conveyance device longitudinally along the casing string. the sleeve comprises an inner surface defining a central bore configured to accommodate the casing string; the inner surface comprises a larger inner diameter portion and smaller inner diameter portions (522, 524) on opposing sides of the larger inner diameter portion; the larger inner diameter portion defines a channel extending circumferentially along the inner surface of the sleeve; a transition surface extends radially between each smaller inner diameter portion (522, 524) and the larger inner diameter portion; the channel is configured to accommodate an instance of the casing collars; the conveyance device comprises a first conveyance device half and a second conveyance device half; the first conveyance device half and the second conveyance device half are separable; the first conveyance device half and the second conveyance device half are connectable around the casing string such that the instance of the casing collars is within the channel; the conveyance device is configured to connect to the casing string by disposing the conveyance device around the casing string such that the casing string is within the central bore and the instance of the casing collars is within the channel; and each transition surface is configured to contact a corresponding shoulder of the instance of the casing collars to inhibit movement of the conveyance device longitudinally along the casing string.