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US 12,607,085 B2Granted
Annular blow out preventer
AssigneeSRI Energy, Inc.
InventorsAlagarsamy Sundararajan, Subhra Dey, Aravindhan Rajamarthandan
Life of this patent
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Abstract
An embodiment uses a symmetrical elastomeric design with hydraulic pistons on either end (as opposed to a single piston on conventional BOPs) which allows for lower actuation forces, reduced friction, and reduced wear and tear. The lower actuation forces correspond to lower operating pressures which allows the body and housing to be smaller, leading to a smaller footprint.
Claims21
A blow out preventor (BOP) comprising:
- a first actuator including a central channel that traverses the first actuator;
- a second actuator including a central channel that traverses the second actuator;
- a resilient ring including a central channel that traverses the ring;
- and
- a body that includes a central channel, the ring, and the first and second actuators;
- wherein the channels of the body, the ring, and the first and second actuators align with each other;
- wherein the ring is between the first and second actuators and includes:
- (a) an upper surface that tapers inwards as the upper surface extends upwards towards the first actuator;
- (b) a lower surface that tapers inwards as the lower surface extends downwards towards the second actuator;
- (c) at least one upper slot on the upper surface and at least one lower slot on the lower surface;
- and (d) at least one bar included in the at least one upper slot and the at least one lower slot.
8 more elements
Dependencies are inferred from the claim text.