Breakers are often used at a later stage of the completion process to decompose (destroy) specific components of reservoir drill-in fluids filter cake after the completion assembly is in place, and the reservoir is prepared for production. Breakers aid in the removal of the RDF filter cake and potential causes of formation damage in order to improve productivity or injectivity of the production interval.

Newpark offers a family of breaker systems designed along with the RDF, depending on the RDF type and clear-brine fluid used. The filter-cake destruction process is often controlled (time delayed) to allow placement of the completion assembly in the open hole interval before removal of the filter cake occurs.