Patent ID: 8439606
Filing Date: 2013-05-14
Classification: E02B,E21B

Abstract:
1. A drilling rig comprising: a platform having a pair of substantially parallel transverse members near an edge thereof; a cantilever mountable on the platform, said cantilever having a pair of substantially longitudinal members along the length of the cantilever, said longitudinal members are substantially orthogonal to the pair of transverse members; and a plurality of sliding and swivel assemblies connecting the longitudinal and transverse members at each interposition of said longitudinal and transverse members, wherein each of the plurality of sliding and swivel assemblies comprises an upper sliding block, a lower sliding block and a swivel member interconnecting the upper and lower sliding blocks, such that the sliding and swivel assemblies are moveable relatively on the relevant longitudinal or transverse member to translate and/or rotate the cantilever with respect to the platform.