·No wash out from the walls of a well, reservoir protection, no limit to drill collapse layer and loss formation;
·Less drilling fluid, smaller displacement and faster return speed, the hole is clean;
·Unique advantage in directional well, horizontal well and continuous sampling;
𓂃
·Suitable for large hole drilling, improving drilling efficiency.New drilling techniques have been developed on the basis of double-walled drill pipe, the most typical representative of it are RDM (Reel Well Drilling Method) and RCCD (Reverse Circulation Centre Discharge).
© 2018 HI LONG GROUP OF COMPANIES, All Rights ReservedPrivacy Policy