Major Oil Rig Companies Implement Tank Cleaning Best Practices

Over the years, companies under contract with major oil companies worked with Gamajet to improve their tank cleaning best managed practices. Each company had similar issues they needed to address; minimizing or eliminating confined space entry, minimizing waste disposal, reducing down time and maximizing safety. In addition, each rig had specific space and weight constraints. The current manual cleaning method process required too much time, did not clean the entire tank and required an unacceptable amount of confined space entry.

Local Gamajet distributors and Gamajet engineers worked with the service company teams to develop optimal placement, flow and pressure configurations and modified cleaning processes. Gamajet was provided with drawings of the tanks and existing pump curves to configure the optimal nozzle configuration and placement. In many cases the Gamajets were placed into the tanks for the cleaning, but in several cases where access was difficult, the Gamajets were permanently installed.

The Gamajet E-Z8 and IV-GT machines were the primary models used both in the full 360 degree and directional models to provide a 40’-55’ cleaning radius while also being light enough to easily move from tank to tank. The Gamajet E-Z8 was typically configured with dual nozzles and large stators, using 80 gallons per minute, 80 - 150 psi, for an 11-12 minute cycle time. The Gamajet IV-GT was typically configured at 120-150 gpm, 80-150 psi and 22-24 minute cycle times. The Gamajet flexible operating range often allowed the use of existing pumps which help achieve cost and weight budgets. The Gamajets were also able to use produced water or brine for cleaning. In some instances, the team arranged for a series of trials, including on a working rig, and in all cases the Gamajets surpassed requirements.


The oil rig companies report that the Gamajets continue to exceed expectations by significantly reducing tank cleaning time and required labor, while providing more complete cleaning and virtually eliminating confined space entry.