Resources Contact Us Home
Horizontal drilling method

Image Number 3 for United States Patent #6109828.

A bore hole support system is formed from a flexible liner that is readily everted within a bore hole and forms a bore hole support system to install a casing in the bore hole while supporting the bore hole walls. After a pilot hole is drilled, the pilot hole is traversed with a reamer to form the pilot hole diameter to a larger diameter for the final bore hole. The flexible liner with the attached casing is everted and pressurized behind the reamer as the reamer traverses the pilot hole to support walls defining the bore hole while pulling the casing into the bore hole. The liner is simply removed from a storage and everting canister and remains with the casing in the bore hole. In certain circumstances, the liner may be coated with a water soluble material so that the casing may be in fluid communication with the bore hole walls when the coating has dissolved.

  Recently Added Patents
Cooking brush
Plasmon generator includes three metal layers for thermally-assisted magnetic recording
Apparatus and method for phase synchronization in radio frequency transmitters
Generation of interpolated samples for decision based decoding
Display device substrate, method for manufacturing the same, display device, method for forming multi-layer wiring, and multi-layer wiring substrate
Liquid crystal display and method of driving the same
Methods and systems for temporarily sharing position data between mobile-device users
  Randomly Featured Patents
Ink cartridge
Paper product
Systems and devices for emitting volatile compositions
Portable centrifuge apparatus
Abnormal condition detecting system for engine
Self-aligned silicide process for reduction of Si consumption in shallow junction and thin SOI electronic devices
Method for regulating the expression of a gene in a baculovirus using a retinoic acid receptor binding site and vector therefor
Phase change memory and phase change recording medium
Optical disc and optical disc address reading apparatus and method