US 10,590,726 B1 · Select mode subsea electronics module

Abstract

A plurality of PODs for a lower marine riser package (LMRP) is disclosed. At least a first subsea electronics module (SEM) and a second SEM are provided in a first POD of the plurality of PODs. At least a third SEM and a fourth SEM are provided in a second pod. The third SEM is redundant with the first SEM and the fourth SEM is redundant with the second SEM. At least one selector circuit is provided to transmit an SEM select signal that electrically activates or electrically deactivates the first SEM separately from the third SEM. As a result, each of the SEMs in the plurality of PODs may be separately activated or deactivated without a need to turn off fluid provided to hydraulic valves in the first and the second PODs that are controlled by corresponding SEMs.

Claims20

Dependent claims

A blow-out preventer (BOP) comprising:

a BOP lower stack;
and
a lower marine riser package (LMRP), wherein the LMRP comprises:
a first subsea electronics module (SEM) and a second SEM in a first pod;
a third SEM and a fourth SEM in a second pod, the third SEM being redundant with the first SEM, and the fourth SEM being redundant with the second SEM;
at least one selector circuit transmitting an SEM select signal that electrically activates the first SEM, while maintaining the third SEM as electrically deactivated, wherein the electrical activation of the first SEM controls fluid for use in BOP components.

3 more elements

Dependencies are inferred from the claim text.

Select mode subsea electronics module

Life of this patent

Select mode subsea electronics module

Life of this patent

Abstract

Claims20