Abstract: An improved cable feed-through apparatus and method for wellheads including a unitary shell having a plurality of knock-down components therein. A plurality of parallel spaced conductors are inserted through rigid spacing and compression rings with upper and lower exposed ends for providing coupling to electric feed cables. The conductors are insulated throughout by resilient sleeves which are removably mounted in the shell. When assembled, as the shell is threaded into a hanger of a well casing head, the resilient sleeves are compressed and forced together to form a pressure-tight, insulated cable feed through device.

Abstract: A packer and tension slip assembly is disposed in the annular area between two coaxial drilling casings having different diameters. The coaxial casings are secured one to the other by placing the inner casing in tension with the outer casing. A packoff unit is attached to and completes the assembly forming an pressure tight seal in the defined annulus. The packer and tension slip assembly also serves to center one string in respect to the other and can be retrieved when no longer required, and subsequently reused.