Sealing means for a multipath, multipass swivel

Details Sealing means for a multipath, multipass swivel Sealing means for a multipath, multipass swivel

E - Fixed Constructions

21

B

166/51.5

E21B 33/038 (2006.01) F16J 15/40 (2006.01) F16J 15/48 (2006.01) F16L 39/06 (2006.01)

Patent

CA 1251392

ABSTRACT OF THE DISCLOSURE A means of sealing a multipath multipass swivel whereby that part of the structure housing the seal element deflects under pressure to compensate for the overall structural deflections, such that a constant seal gap is maintained. A means of lubricating and flushing seal surfaces is also disclosed whereby a controlled liquid is injected between two seals at a higher pressure than the production fluid such that the seal between the injected liquid and the production fluid is less capable than the seal between the controlled liquid and ambient.

482512

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