Reversible rupture disk apparatus and method
OwnerNathan Raska, David Haugeninventors
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Abstract
The present invention relates to easily replaceable rupture disk arrangements and, to arrangements including reversible calibrated rupture disk assemblies, bi-directional rupture disk assemblies and tandem pressure relief devices. The present invention further includes uses for such arrangements including apparatus and methods for preventing critical annular pressure buildup in an offshore well utilizing a modified casing portion that includes a burst disk assembly of the present invention and apparatus and methods for relieving an over-pressure in the outlet line of a positive displacement pump to prevent pump damage.
Claims15
A pressure relief apparatus for a pressure containing system comprising:
- A body adapted for connection to a pressure containing boundary region of the system;
- A pressure relief member connected to the body;
- and
- An attenuator positioned to reduce an influence of a transient pressure of the system on the pressure relief member.
A pressure containing system comprising:
- An interior space at a first pressure and an exterior space at a second pressure;
- A boundary structure defining the interior from the exterior;
- and
- An aperture in the boundary structure, the aperture obscured by a pressure relief assembly having a rupture disk;
- and
- An attenuator proximate the rupture disk and exposed to the first pressure to reduce the influence of transients of the first pressure on the rupture disk.
A method for relieving excess pressure from a pressure containing system comprising:
- Providing a pressure relief assembly in a pressure containing boundary region of the system, the pressure relief assembly comprising a calibrated pressure relief member and an attenuator;
- and
- Attenuating transient pressures of the system to reduce their influence on the pressure relief member.
Dependencies are inferred from the claim text.