SLINGSHOT SUBSTRUCTURE FOR MOBILE DRILLING RIG Russian patent published in 2016 - IPC E21B15/04 

FIELD: mining.

SUBSTANCE: present invention offers a slingshot substructure of mobile drilling rig. In one exemplary version disclosed is a slingshot substructure of drilling rig including foundation with a fixed drill floor mounted thereon, the upper surface of the drilling floor is rigidly fixed on the working height above the foundation for drilling operation at well location at the drilling site. Besides, the composition also includes raising floor made with possibility of installation in lowered transport position for the slingshot substructure transportation to drilling site and lifting into working position, adjacent with a fixed drilling floor for drilling. Elevation of the upper surface of raising floor below elevation upper surface of fixed drilling floor, when raising the floor is installed in lower transport position. Present invention discloses a method of handling the slingshot substructure for mobile drilling rig, wherein the slingshot substructure is moved in horizontal direction above the well head equipment, so that a part of the equipment passes through the pit zone of slingshot substructure under the fixed drilling floor and sideways through the open side of slingshot substructure.

EFFECT: technical result consists in improvement of efficiency for slant drilling rig in assembly, lifting and moving the drilling rig between neighboring wells during cluster drilling.

34 cl, 22 dwg