THE MASHBURN DOWNHOLE FILTER SCREEN (DFS)
with fish-thru feature is the world’s leader in drill string filtering technology. Our DFS can be placed anywhere in the drill string, but is usually located directly above critical equipment. The DFS can ensure that drilling fluids will operate to their potential without tool jamming debris causing NPT and unnecessary failures to vital equipment. To date, the DFS has logged over 100,000 rental days in almost every drilling environment imaginable. The filters are NS-1 certified (for North Sea service) and are currently in service in 19 different countries. Custom applications are gladly accommodated upon request. PATENTS: 6,598,685; 7,549,486; 8,746,340
DFS PRODUCT DETAILS
- High strength steel and non-mag subs available
- Designed for todays MWD equipment, the filter is an inexpensive insurance – especially in deep water applications
- The DFS can be located near the MWD tools to filter drill pipe scale and dried cements
- Unique Hi-flow design filters effectively with minimal flow reduction
- Don Mashburn’s DFS has been proven effective with positive and negative pulse tools
- Eliminates NPT by keeping equipment debris free
- Highly resistant to wear for longer trouble free bit runs
- Provides a port through the filter for fishing
- Custom built subs and screens are available upon request