ATC Automatic Tank-Cleaning Technology | Schlumberger

ATC Automatic Tank-Cleaning Technology

Minimize HSE risks, waste generation, and emissions

Emissions Reduction
Lowers emissions up to 64% by reducing ship-to-shore runs and truck trips to disposal sites for an average annualized savings of 96 metric tons of CO2e.
Water Stewardship
Decreases waste generation by up to 90%, lowers slop waste, and recycles water for reuse in cleaning process.

Compared with manual tank cleaning

Minimize HSE risks and decrease waste generation

M-I SWACO ATC automatic tank-cleaning technology reduces cleaning time, crew requirement, and carbon footprint and minimizes or even eliminates confined-space entry. Within the industry's more stringent QHSE environment, ATC technology improves safety and reduces the number of personnel onboard, waste generation and associated emissions, and downtime during the cleaning process.

ATC VAC technology at dock side
Improved safety
Little or no confined-space entry
Reduced personnel required
Easy to operate with a small crew
Minimized downtime during cleaning process
Decreased cleaning time by 70%
ATC LITE
Low-volume automatic tank-cleaning technology
Offshore mobile
ATC technology
Offshore permanent
ATC LITE technology
Dock side
ATC VAC technology
Land operations
Xpress ATC technology

How it works

ATC technology employs tank-cleaning machines (TCMs) that are optimally positioned inside the tank. The machines are programmed based on the cleaning pattern and analysis of tank geometry. The portable ATC technology is brought onboard when the cleaning job is going to take place. The TCMs are connected to the ATC technology skid, which features pumps that send a mixture of surfactants and water to the TCMs.

Powerful water jets clean every surface inside the tank following the specially programmed cleaning pattern. A portable slop pump or rig-tank pumps transfer the slop back to a washwater recycling unit inside the ATC technology. There, the liquid phase is separated from the solids. Liquid is recycled to the TCMs for reuse as cleaning fluid until it becomes too contaminated by fine solids.

At the end of the operation, cleaning fluid and solid waste—predominantly barite—are safely removed from the installation or recycled to build new mud volume. In cases where an overboard permit is in place, the process is simplified.

ATC technology also comprises customized cleaning chemistry for the specific mud type. The closed-loop system also reuses fluid by separating solids from the liquid. The 44 bbl of water and cleaning liquid prepared at the outset of the cleaning operation is used to clean several tanks. Once fine solids have settled out in the waste container, the liquid can be reused.

ATC automatic tank-cleaning technology
Decarbonize Your Operations
ATC automatic tank-cleaning technology is part of our Transition Technologies portfolio. Learn about our approach to driving high performance sustainably and other technologies that can help minimize your well construction CO2 footprint.
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