Online particles count monitoring system and seawater injection system comprising the same

An online particles count monitoring system comprising:

• a diverted seawater inlet;
• a core plug assembly downstream of the diverted seawater inlet, the core plug assembly comprising a core plug and a removable particle filter arranged upstream of the core plug;
• a diverted seawater outlet downstream of the core plug assembly;
• and
• an inlet pressure monitoring station upstream of the core plug assembly and downstream of the diverted seawater inlet, wherein:
• the diverted seawater inlet is fluidly coupled to the diverted seawater outlet through the core plug assembly to divert seawater moving in a downstream direction through the diverted seawater inlet to the diverted seawater outlet through the removable particle filter and the core plug of the core plug assembly;
• the core plug comprises a core plug inlet face and the removable particle filter is supported by the core plug inlet face, extends across a majority of the core plug inlet face, and is characterized by a pore size rating of at least about 0.45 microns;
• the core plug inlet face of the core plug and the removable particle filter are oriented to directly obstruct the flow of diverted seawater such that particles collected by the removable particle filter will increase fluid pressure in diverted seawater moving through a diverted seawater sampling line that is fluidly coupled to the online particles count monitoring system, at a constant flow rate;
• and
• the inlet pressure monitoring station generates a particles count signal based on fluid pressure in diverted seawater moving through the diverted seawater sampling line that is fluidly coupled to the online particles count monitoring system, in a downstream direction of the core plug inlet face and the removable particle filter.

An online method of monitoring particle count in a seawater injection system comprising a primary seawater supply line, a diverted seawater sampling line, and an online particles count monitoring system, wherein:

• the online particles count monitoring system is fluidly coupled to the primary seawater supply line through the diverted seawater sampling line;
• the online particles count monitoring system comprises a diverted seawater inlet, a core plug assembly downstream of the diverted seawater inlet, a diverted seawater outlet downstream of the core plug assembly, and an inlet pressure monitoring station upstream of the core plug assembly and downstream of the diverted seawater inlet;
• the core plug assembly comprises a core plug and a removable particle filter arranged upstream of the core plug;
• the diverted seawater inlet is fluidly coupled to the diverted seawater outlet through the core plug assembly to divert seawater moving in a downstream direction through the diverted seawater inlet to the diverted seawater outlet through the removable particle filter and the core plug of the core plug assembly;
• the core plug comprises a core plug inlet face and the removable particle filter is supported by the core plug inlet face, extends across a majority of the core plug inlet face, and is characterized by a pore size rating of at least about 0.45 microns;
• the core plug inlet face of the core plug and the removable particle filter are oriented to directly obstruct the flow of diverted seawater;
• and
• the online method comprises:
• diverting a portion of a primary flow of seawater moving in a downstream direction through the primary seawater supply line to the online particles count monitoring system through the diverted seawater sampling line;
• maintaining a constant flow rate in the diverted seawater sampling line such that particles collected by the removable particle filter will increase fluid pressure in diverted seawater moving through the diverted seawater sampling line;
• and
• generating, by the inlet pressure monitoring station, a particles count signal based on fluid pressure in diverted seawater moving downstream through the diverted seawater sampling line in a downstream direction of the core plug inlet face and the removable particle filter.