Preventing Backflow with Float Subs in Drilling Operations | Reena Jerold posted on the topic | LinkedIn
linkedin.com
Preventing Backflow with Float Subs in Drilling Operations | Reena Jerold posted on the topic | LinkedIn
• FLOAT SUB (NRV) • During pump shutdown or while making a connection, backflow can cause loss of hydrostatic pressure, formation influx, or even kick indicators that confuse the crew. The Float Sub maintains pressure control by stopping reverse flow. It also helps during tripping operations. Without a float, mud can U-tube into the pipe ...
1 month ago
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