Reverse Circulation Well Drilling Pipes
Holte Reverse Circulation Drill Pipe
As an early proponent of reverse circulation (RC) drilling Holte has remained dedicated to developing new ways to continually improve RC drilling pipe design and manufacturing techniques.
Holte’s standard reverse circulation dual wall drill pipe allows for air to move through the annulus between the center tube and outer pipe, while the cuttings flow up freely through the center. Additional jetting pipes can also be added to our dual wall design within the annulus to give added control of air distribution and cutting retrieval for underwater drilling or deep holes.
Simplicity and Durability
Our expertise in understanding materials and the strains placed on them during drilling derives from our years of manufacturing and working in the field alongside the customer. Today, Holte’s design centers on simplicity and durability. Precision machined and heat treated tool joints are assembled under careful supervision using a unique, proven technique that uses heavy wall, durable drill steel formulated and tempered for maximum wear resistance and strength. Our design does not use center tube connectors or complicated inner barrel suspension systems so you never need to worry about costly repairs and downtime in the field. In fact, Holte’s design allows the center tube to be a single, continuous piece of drill steel that it threaded on both ends. Prior to welding the outer pipe to the joints we carefully torque the inner pipe into the machined joint, creating additional strength unmatched by any other drill pipe on the market.
Hex Pipe Offers Advantages
Holte’s Dual Wall Pipe with Quick Release Hex Head was created by Holte Manufacturing as a solution to the problem of thread binding. This is particularly a problem with large diameter systems using our traditional threaded joints due to the higher amount of torque applied to the drill string. Holte Hex Joint Pipe eliminates this, while adding several other advantages over traditional threaded joints.
When disconnecting hex pipe no counter rotation is needed as the joints simply plug together due to their unique design. When connected the joints are held together by two machined pins that require no more than a standard wrench to remove. This greatly reduces time spent assembling and disassembling pipe. Another big advantage of hex connections is the ability to rotate in both directions. When difficult conditions persist this is an option that will keep you drilling, while your competition is stuck in the hole.
Complete Drilling Systems
Complete Drilling Systems
Reverse circulation drilling requires all the components to be carefully matched in order to fully realize the benefits of this style of drilling and drill pipe sizing is critical to success. For this reason Holte is proud to offer everything from rig to bit, including custom top head drives specifically designed and outfitted for reverse circulation drilling.