Downhole Innovations, Made in France HOME DRILLSTAR OIL AND GAS SUBCONTRACTING NEWS & MEDIA CONTACT Z-REAMER PDF info sheet YOUR ADVANCED COMPACT UNDERREAMER Combining the advantages of a modern underreamer with a compact size, the Drillstar Z-Reamer opens up new reaming applications. The simplicity and reliability of its design make it a reliable, cost-effective alternative to other modern underreamers. Due to its much shorter length, it is now also possible to perform directional reaming-while-drilling using PDMs rather than a RSS BHA, even in the smaller borehole sizes and without compromising on steerability. The Z-reamer is the first “block-type” PDC underreamer capable of enlarging up to one bit size up (about 50% of pilot size) even in the smaller diameters. This unique feature enables the tool to be run in casing-while-drilling applications with even the smaller casing diameters (4 1/2 in. and up). STANDARD DIMENSIONS Type Pilot Bit size Max Body OD Max enlarged hole size Max flow (GPM) Standard connection Z378H 3 7/8” 3 13/16” 5 1/2” 150 2 3/8” REG Z450H 4 1/2” 4 3/8” 6 3/8” 250 2 7/8” REG Z600H 5 7/8” - 6” 5 3/4” 8 1/2” 450 3 1/2” REG Z850H 8 1/2” 8 1/4” 12 1/4” 900 4 1/2” REG Z1225H 12 1/4” 11 3/4” 17 1/2” 1800 6 5/8” REG Z1750H 17 1/2” 16” 23” 1800 7 5/8” REG Oil and gas Tubing and casing Drilling MUDHammer Z-Reamer X-Reamer Hole opener PDC hole opener Integral blade stabilizer Roller reamer Milling Fishing DRILLSTAR INDUSTRIES Av. Joliot Curie - BP 30061 - 64148 LONS INDUSPAL Cedex - France Phone: +33 (0) 559 130 100 Fax: +33 (0) 559 621 993 E-Mail: sales@drillstar.fr Web: www.drillstar-industries.com Site map Home DRILLSTAR Oil and gas Subcontracting News & Events Contact Site map Artzainak Group Aérodif Armax Artzainak Asma Drillstar EBL Edams Emeca Lagarde © Copyright 2021 DRILLSTAR Mentions Légales