Abstract:
Since 1985, GeoRocFor is recognized worldwide as the overburden casing system specialist. GeoRocFor is a manufacturer of casing advancement systems. Our drilling systems are designed with modern technology for casing advancement compared to that of traditional drilling methods. This includes drilling products and solutions to support casing advancement for piling, micro piling, O-pile installation, underpinning and anchoring. Our systems consist of a Driver Bit and a Crown or Ring Bit. The Driver Bit is the device that transfers impact and rotation to the crown bit for drilling. The crown bit is a two-piece unit permanently connected together. The upper part is welded to the casing, and the lower part, which has Tungsten Carbide is free to rotate with the driver bit. With our XS-GTE (3) Drill Through System, used with a DTH hammer, overburden can be cased, and sub-casing anchor sockets drilled into bedrock in one operation with the same driver-bit without removing the drill string. Thus, allowing a production rate that far exceeds traditional drilling methods. This has been proven on several past projects and current ongoing projects in the USA and in many other countries. A key difference in using the GeoRocFor System and traditional drilling methods is that the casing is actually being pulled down from the bottom by the driver bit connected to the crown or ring bit welded to the casing instead of being forced from the top head of the drill. These systems can also be designed with our Air Master System. This system is designed to drill in areas where ground disturbance is an issue. Particularly around existing structures and working with authorities such as the MTA and PANYNJ. Drilling with the GeoRocFor systems has several advantages over traditional drilling methods such as straighter holes, better rate of penetration and direct energy transfer.