1
Leighton James, Saltel Jean Louis: Oil drilling method. Drillflex, June 6, 1997: FR2741907-A1 (165 worldwide citation)

A process for drilling and lining a shaft, particularly an oil exploration shaft, using an assembly of initially flexible preformed sections which are unfoldable radially in the shaft, under internal pressure to form a cylinder and to be rigidified in situ by polymerisation of the wall comprises: (a ...


2
Swain James C, Thomas David L, Yates Jan B: Stabilisation de couches rocheuses a laide dun tube dilatable, Expanding hollow tube rock stabilizer. Eastern Company, MACRAE & CO, July 24, 1984: CA1171310 (115 worldwide citation)

APPLICATION OF: JAMES C. SWAIN, JAN B YATES & DAVID L. THOMASFOR: EXPANDING HOLLOW TUBE ROCK STABILIZER ABSTRACT OF THE DISCLOSURE A hollow, elongated tube is inserted withoutsubstantial interference into a bore hole in a rock formationhaving a diameter at least substantially as large as the largest ...


3
Breig Uwe Dipl Ing Fh, Uhrig Thomas Dipl Ing: Method and arrangement for constructing a tunnel by using a driving shield. Herrenknecht, December 2, 1998: EP0881359-A1 (109 worldwide citation)

To drill a tunnel, a drilling drive machine (1) has a leading shield (3) and a shield tail which is advanced by pushing a pipe section (11) out of the shield tail. An expandable pipe section (11") is pushed through the prepared pipe length into the shield tail, and expanded. After locking the expans ...


4
Tunnel linings. Spun Concrete, April 15, 1981: GB2058877-A (109 worldwide citation)

A tunnel lining segment is provided at its mid-length with a blind bore 1 open to the outside and stopping short of the inside surface, which is provided with a visible marking in registry with the blind bore. The remaining wall thickness at the inner end of the bore can be broken out or drilled to ...


5
Lorne R Herron: Method of rock bolting and rock bolt. Atlas Copco Aktiebolag, Frishauf Holtz Goodman & Woodward, April 16, 1985: US04511289 (99 worldwide citation)

A rock bolt comprises an inflatable tube (11) which has a deep longitudinal depression (12). A wire coil (20) is mounted on the tube before the bolt is inserted in the borehole. When pressurized by high pressure water the tube (11) expands and clamps the coil (20) between itself and the borehole and ...


6
Bo T Skogberg: Method and installation apparatus for rock bolting. Atlas Copco Aktiebolag, Frishauf Holtz Goodman and Woodward, January 3, 1984: US04423986 (99 worldwide citation)

A rock bolt is manufactured from a steel tube which has been deformed to have a deep depression so that it assumes a substantially reduced diameter. A sleeve is pressed onto the outer end thereof which is sealed through welding. An installation chuck carried on an installation rod comprises a socket ...


7
Robert Lance Cook, David Paul Brisco, R Bruce Stewart, Lev Ring, Andrei Filippov, Alan B Duell: Forming a wellbore casing while simultaneously drilling a wellbore. Shell Oil Company, Haynes and Boone, Todd Mattingly, May 17, 2005: US06892819 (94 worldwide citation)

An apparatus including a support member, the support member including a first fluid passage, a mandrel coupled to the support member, the mandrel including: a second fluid passage, a tubular member coupled to the mandrel, and shoe coupled to the tubular liner, the shoe including a third fluid passag ...


8
Bo T Skogberg, Gunnar V R Romell: Method of rock bolting and tube-formed expansion bolt. Atlas Copco Aktiebolag, Frishauf Holtz Goodman & Woodward, January 6, 1987: US04634317 (93 worldwide citation)

A tube-formed rockbolt is partly circular in its cross-section and opposite its circular portion (12) it has a deep depression (16-18). Its ends are sealed and its outer end has a hole (44, 45) or a fitting (24) through which the bolt can be supplied with high pressure water that expands the tube to ...


9
Harvey D Gillespie: Anchored cable sling system. Prince Yeates & Geldzahler, December 17, 1996: US05584608 (86 worldwide citation)

An anchored cable sling system stabilizies and supports the rock formation above a mine tunnel roof. The system comprises a unitary multi-strand cable having a series of anchor collars on each end. The anchor collars include radially extending wings that: (1) cut and shread the resin grout material ...


10
Carl E Keller: Horizontal drilling method and apparatus. Ray G Wilson, September 8, 1998: US05803666 (83 worldwide citation)

A bore hole support system is formed from a flexible liner that is readily everted within and inverted from a bore hole and forms a bore hole support system during installation of a casing for the bore hole. After a pilot hole is drilled, the pilot hole is traversed with a reamer to form the pilot h ...



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