초록 ▼

An apparatus and method for providing a drilling rig substructure on a fixed platform which includes the transfer of the drilling rig substructure from a movable jack-up type rig to an adjacent, fixed oil platform. The method provided utilizes a conventional type jack-up rig which includes a barge m

An apparatus and method for providing a drilling rig substructure on a fixed platform which includes the transfer of the drilling rig substructure from a movable jack-up type rig to an adjacent, fixed oil platform. The method provided utilizes a conventional type jack-up rig which includes a barge mounted telescopically on a plurality of structural support legs. A substructure, containing the entire apparatus for drilling or reworking an oil or gas well, connected to an associated bridge and skid mat, are connectably housed on the barge portion of the jack-up rig. The barge is elevated to the approximate level of the fixed platform to which the drilling apparatus is to be transferred. The substructure, bridge and skid mat are slid from the barge towards the surface of the fixed platform to a degree which leaves the substructure and associated drilling apparatus on the barge portion of the jack-up rig. The substructure is disconnected from the skid mat and bridge, and a second elevational increase elevates the substructure to a level where it can be slid from the barge across the bridge (connected now to the barge portion of the jack-up rig) onto the skid mat, now located on the fixed platform.The apparatus of the present invention includes a substructure capable of housing and supporting a typical oil drilling apparatus, a connecting bridge for spanning the gap between the jack-up rig and the fixed platform during the skidding operation, and a structural skid mat. The mat is so dimensioned that the substructure and associated drilling equipment can be adjusted as needed within allowable tolerances to rework or drill new wells on existing fixed platforms which initially are without the necessary drilling facilities.

대표청구항

대표청구항이 없습니다.