M-I SWACO has released DEEPCLEAN additive, a single-stage well-displacement chemical. Designed primarily for downhole use in oil and gas wells, the additive is used for cleanup during the displacement of oil- or synthetic-base drilling fluids prior to the start of the completion operations.

In Nigeria, one operator used the DEEPCLEAN additive to reduce rig inventory and circulation time to clean fluid for a deepwater well. Once the viscosified spacer appeared on the surface, followed by a few cubes of water, the well was confirmed clean with consistently acceptable NTU values below 100. This was accomplished with a single, full circulation using the DEEPCLEAN additive.

“The DEEPCLEAN additive, with its solvent-surfactant double emulsion approach, proved to be highly effective in cleaning synthetic-base mud from an over 17,500 ft deepwater well in just one circulation, compared to five circulations with the previous displacement chemistry,” said Adewale Talab, project engineer, M-I SWACO. “This saved both rig time and operations running cost.”

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