Schlumberger

Tech Report: BREAKDOWN System with D-SOLVER EXTRA Agent Simplifies Operations, Enhances Cleanup

Low-pH chelator helps operator save time and costs during 11-well campaign, offshore Brazil

BREAKDOWN System with D-SOLVER EXTRA Agent Simplifies Operations, Enhances Cleanup

Publication Date: 01/10/2017

In a previous offshore development campaign, an oil and gas company in Brazil used D-SOLVER PLUS low-pH, brine-soluble chelating agent in the BREAKDOWN enzyme and chelant filtercake breaker system with success. While developing seven producer wells and four injector wells in the next campaign, the operator sought to streamline operations by eliminating extra steps during breaker preparation, transportation, and mixing.

After extensive lab testing, M-I SWACO recommended a D-SOLVER EXTRA agent concentration of 17.5% by volume for producer wells and 27.5% by volume for injector wells to help break up the filtercakes. Unlike other chelants, the D-SOLVER EXTRA agent enables easy mixing and does not require additional pH adjustment—helping the operator meet production and injection targets while simplifying mixing logistics on the rig.




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