WELL SHIELD FOR HORIZONTAL OR CROOKED WELL Russian patent published in 1996 - IPC

FIELD: drilling. SUBSTANCE: device includes shield base part. The latter is made in the form of a number of base lengthwise rods placed along generatrix of shield base part. Wire is wrapped on the base rods. Shielding skeleton is placed on the outside of wire winding. The skeleton is made in the form of a number of shielding lengthwise rods. Shielding wire is wrapped around the shielding rods. Ring members are installed to secure the rods. The ring members are installed on the axis of the well shield. Gaps are provided between shielding lengthwise rods and wire of shield base part. Besides, ring members are secured to the base lengthwise rods. EFFECT: well shield deformation is excluded. 4 dwg