| 摘要 |
A system is provided which has a downhole membrane separator, including a membrane, which separates hydrocarbons, such as methane and oil, from other contaminants, such as CO2 and water. After the membrane becomes fouled with contaminants after separating a sufficient quantity of a feedstock, the membrane is backflushed or chemically treated, in place to assist in the removal of contaminants from the membrane. An explosive may be used to create the a pressure wave which backflushes the membrane. Or else, the pressure differential across the membrane may be reversed to create the backflushing action. Chemicals may be used to assist in removing foulants. Or else, a spray or bubbler system may be used to create turbulence to assist in the removal of a foulant. Methods of unfouling the membrane are also taught including backflushing and chemical treatment of the membranes to removed unwanted contaminants from the membrane.
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