Local produced oil dehydrator

摘要

A portable, semi-portable, or permanent system for removing BS&W from crude oil at the local production or bulk storage site. A demulsifier is added to the crude as it enters a low shear pump which pumps the mixture through a plate and frame type heat exchanger where the incoming crude is preheated using outgoing heated and dehydrated crude. Then the incoming crude enters an oil-water separator where it is further heated by a secondary heater within the separator and passes through a special coalescing section. Water and basic sediment separate from the crude are discharged from the bottom of the separator. The heated dehydrated crude exits the separator, flows back through the heat exchanger where it is cooled as it preheats incoming crude, and then is pumped to clean oil storage. BS&W and flow monitors on the incoming crude and outgoing crude are used to control operation of the system.

主权项

1. A system for removing BS&W from crude oil at the local production or storage site comprising:
a low shear pump functionally connected via a first pipe to a heat exchanger for introducing incoming crude oil containing BS&W into the heat exchanger where the crude oil is heated to form preheated crude oil, the heat exchanger functionally connected to an oil-water separator via a second pipe for transferring the preheated crude oil from the heat exchanger to the oil-water separator where the preheated crude oil is further heated and where BS&W is separated and removed from the crude oil to form heated dehydrated crude oil, the oil-water separator functionally connected to the heat exchanger via a third pipe for transferring the heated dehydrated crude oil to the heat exchanger where the heated dehydrated crude oil is cooled before being stored, and a firetube provided internally in the oil-water separator that further heats preheated incoming crude oil.