US 11,454,776 B1 · Fiber optic protection assembly for preventing fluid from entering into a fiber termination sub

Abstract

Fiber optic protection assembly for preventing fluid from entering into a fiber termination sub, including a sub having disc-receiving areas and inner channel connecting the disc-receiving areas. Disc-receiving areas receive plurality of discs, each disc having a disc channel. The sub includes tension bolts, each having a bolt channel. The sub receives a fiber tube or a Fiber in Metal Tube (FIMT) comprising fiber optic cables through bolt channels, disc channels of the discs and inner channel. Discs properly seal the void in the sub to ensure protection to the insulation, center conductor and fiber tube/FIMT. When the fiber optic protection assembly is lowered into the well, hydrostatic pressure compresses the discs and O-rings of the top tension bolt ensure protection to the insulation that houses the fiber tube. Compression of the discs ensures no pressure gets to the bottom tension bolt, thus protecting fiber optic strands from hydrostatic pressure.

Claims20

Dependent claims

A fiber optic protection assembly, comprising:

a sub comprising disc receiving areas at both ends, wherein said sub comprises an inner channel connecting said disc receiving areas;
a pair of tension bolts, each tension bolt comprising a bolt channel;
a plurality of discs, each disc having a disc channel, wherein each of said disc channels has the same diameter as said bolt channel;
and
a fiber tube comprising fiber optic cables,
wherein a series of said plurality of discs insert in said disc receiving areas from both ends of said sub,
wherein each tension bolt of said pair of tension bolts inserts through said disc receiving areas from each end of said sub such that said plurality of discs are sandwiched between said inner channel and said tension bolt from each end of sub,
wherein said fiber tube draws through said bolt channels, said disc channels and said inner channel, and
wherein said plurality of discs connects to said inner channel and said pair of tension bolts, ensuring proper seal between said inner channel and said pair of tension bolts and prevents fluid from entering into said sub.

6 more elements

A method of providing a fiber optic protection assembly, the method comprising steps of:

providing a sub comprising disc receiving areas at both ends, said sub comprising an inner channel connecting said disc receiving areas;
providing a pair of tension bolts, each tension bolt comprising a bolt channel;
providing a plurality of discs, each disc having a disc channel, each of said disc channels having the same diameter as said bolt channel;
providing a fiber tube comprising fiber optic cables,
inserting a series of said plurality of discs in said disc receiving areas from both ends of said sub;
inserting each tension bolt of said pair of tension bolts through said disc receiving areas from each end of said sub sandwiching said plurality of discs between said inner channel and said tension bolt from each end of sub;
drawing said fiber tube through said bolt channels, said disc channels and said inner channel;
and
connecting said plurality of discs to said inner channel and said pair of tension bolts, ensuring proper seal between said inner channel and said pair of tension bolts for preventing fluid from entering into said sub.

6 more elements

Dependencies are inferred from the claim text.

Fiber optic protection assembly for preventing fluid from entering into a fiber termination sub

Life of this patent

Fiber optic protection assembly for preventing fluid from entering into a fiber termination sub

Life of this patent

Abstract

Claims20