Completion and workover fluid filtration system
A liquid cleaning system for liquid that is substantially continuously circulated and which becomes contaminated with solid particulate and debris during circulation. The liquid cleaning system, which is particularly advantageous to cleaning liquid that is circulated within a petroleum well bore during completion and workover activities, incorporates a vibratory screen separator for accomplishing preliminary separation of large particulate and debris from the contaminated liquid and which also incorporates a filtration bank having a plurality of filters that are each interconnected with inlet discharge and drain headers. Filter bank incorporates a valving system having the capability of accomplishing backflushing by circulating clean fluid in reverse manner through selected ones of the filters to remove collected solid particulate therefrom and transport the removed particulate to the drain header. The drain header is interconnected with a centrifugal solids separation system that separates a majority of the solid particulate material from the backflushing fluid and transports the backflushing fluid back through the filter bank for cleaning thereof. The filter bank is designed for selective backflushing of individual filters thereof while at the same time maintaining continuous filtering activities by means of other filters in order that the liquid circulation system may function in continuous manner without necessitating any downtime for restoration of the filtration system.
- Assignee:
- EDB-83-082273
- Patent Number(s):
- US 4352739
- OSTI ID:
- 6276121
- Country of Publication:
- United States
- Language:
- English
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