Schlumberger

Case Study: Well Commander successfully activated with flapper valve to stop losses

Challenge: A China operator experienced losses and kicks while drilling the 12 ¼ in. section of an onshore well. Owing to the predicted losses in this section, as a contingency the operator needed to pump lost circulation material (LCM) pills while drilling.

Solution: M-I SWACO Specialized Tools recommended the Well Commander multi-ball-activated drilling valve. The tool would comprise a flapper type float valve above the Well Commander valve to serve as a barrier for any kick during the circulation through the open ports of the tool.

Result: A field test was first performed to establish whether the Well Commander activation balls would pass through the flapper valve. The drilling BHA with 8 ¼ in. Well Commander tool comprising the Bypass Ball Catcher and flapper float valve was run in the hole to drill the 12 ¼ in. section.


Download: Well Commander successfully activated with flapper valve to stop losses (0.20 MB PDF)

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“The Well Commander functioned flawlessly with two operating and one isolation ball dropping through a flapper-type float valve above the Well Commander too.”
Jamie Henderson
Senior Applications Engineer
M-I SWACO