Dewatering apparatus, systems, and methods

A method, comprising:

• providing a lubricant oil from a lubricating oil system to a rotating machine, the lubricating oil system comprising:
• a reservoir that encloses the lubricant oil,
• a filter assembly that comprises at least one filter and is positioned in the reservoir to separate the reservoir into a first oil tank and a second oil tank, the first oil tank fluidly coupled to the rotating machine through an oil return line,
• a system pump fluidly coupled to the reservoir, wherein providing the lubricant oil to the rotating machine comprises operating the system pump to circulate the lubricant oil from the second oil tank to the rotating machine through an oil supply line, and
• a circulating pump assembly comprising a conduit that fluidly couples the first oil tank to the second oil tank external to the reservoir, a circulating pump coupled within the conduit and comprising a suction coupled to the first oil tank and a discharge coupled to the second oil tank, and a media filter coupled within the conduit and between the first oil tank and the second oil tank;
• filtering the lubricant oil through the at least one filter as the lubricant oil moves from the first oil tank to the second oil tank during operation of the system pump;
• and
• circulating the lubricant oil from the first oil tank to the second oil tank through the conduit.