| 摘要 |
Disclosed herein is a telescoping substructure (100) of a drilling rig (300) that includes first and second telescoping substructure boxes (110, 120). The first and second telescoping substructure boxes (110, 120) each include, among other things, a lower substructure box (110L, 120L) and an upper substructure box (110u, 120u) that is adapted to be telescopically raised and lowered relative to the lower substructure box (110L, 120L). Furthermore, each telescoping substructure box (110, 120) also includes raising means for telescopically raising and lowering the upper substructure box (110u, 120u) relative to the lower substructure box (110L, 120L) between a collapsed configuration for transportation and a raised configuration for drilling operations, wherein each of the first and second telescoping substructure boxes (110, 120) are adapted to facilitate movement of the telescoping substructure (100) in at least one of a lateral direction and a longitudinal direction over wellhead equipment (160) positioned above a wellbore location (170) when the upper substructure boxes (110u, 120u) are in the raised configuration. |
