1
Philip D Nguyen, Kirk L Schreiner: Preventing well fracture proppant flow-back. Halliburton Energy Services, Robert A Kent, Clark Dougherty Jr, June 1, 1999: US05908073 (235 worldwide citation)

Improved methods of propping a fracture in a subterranean zone whereby the subsequent flow-back of the proppant is prevented are provided. The methods basically include the steps of placing a mixture of fibrous bundles and the proppant in the fracture while maintaining the fracture open and then all ...


2
Sizer Phillip S, Schwegman Harry E: Methods of completing a well. Otis Engineering Corporation, June 13, 1972: US3669190 (198 worldwide citation)

A method of completing a well by installing in the well a flow conductor, performing various operations such as cementing the flow conductor in the well bore, drilling out excess cement from the flow conductor, perforating the casing at desired locations, and the like, installing a liner in the flow ...


3
Cook Robert Lance, Brisco David Paul, Stewart R Bruce, Ring Lev, Haut Richard Carl, Mack Robert D, Duell Alan B: Forming a casing while simultaneously drilling a wellbore. Shell Int Research, September 27, 2000: GB2348223-A (190 worldwide citation)

An apparatus 3500 is positioned within a preexisting section of wellbore 3575 having casing 3590. A new section of wellbore is drilled by a bit 3535 which is driven by a mud motor 3530 actuated by fluid pumped via passages 3540,3545, pressure chamber 3550 and passage 3555. At some point during the o ...


4
Vercaemer Claude J, Darling Brian W E: Method and apparatus for cementing a well. Sofitech, Schlumberger Cie Dowell, December 2, 1998: EP0881354-A2 (185 worldwide citation)

A method of cementing a well permitting a reduction in the degree of diameter reduction of casing or liners required, and not requiring excessively large initial conductor casing, is described. The method is characterized by provision of an enlarged wellbore and a novel liner structure which is adap ...


5
Philip D Nguyen, David L Brown, Steven F Wilson: Methods of preventing well fracture proppant flow-back. Halliburton Energy Services, Robert A Kent, C Clark Dougherty Jr, July 20, 1999: US05924488 (178 worldwide citation)

The present invention provides improved methods of placing proppant in fractures formed in a subterranean zone to prevent the subsequent flow-back of the proppant with fluids produced from the zone. The methods are basically comprised of the steps of depositing a mixture of hardenable resin composit ...


6
Young James Douglas: Apparatus for setting a large bore packer in a well. Gearhart Owen, December 4, 1973: US3776307 (175 worldwide citation)

Apparatus for setting a large bore packer in a well penetrating subterranean formations characterized by a packer assembly including an expansible liner that can be expanded into contact with the conduit, such as casing, of the well for tight sealing engagement without requiring setting anchors or t ...


7
Wood Edward T, Dobson Andrew: Downhole pipe expansion apparatus and method. Baker Hughes, April 7, 1999: GB2329918-A (174 worldwide citation)

A method and apparatus for expanding tubulars comprises inserting a rounded tubular (12) through a tubular or borehole (10) of larger diameter while suspended on a mandrel (14). A stop device, such as a liner hanger, is attached to the larger tubular (10) after delivery downhole on the mandrel (14). ...


8
Metcalfe Paul David, Simpson Neil Andrew Abercrombi: Bore-drilling bit and bore isolation expander for single trip use.. Petroline Wellsystems, Astec Dev, September 6, 2000: GB2347445-A (166 worldwide citation)

A drill bit 22 for mounting on a drill string 10 including a section of expandable tubing 18 and a tubing expander 20. Rotation of the drill bit allows the drill string to advance through the bore 12, followed by location of the tubing 18 to overlap the existing casing 14 at 46. Tubing expander 20 i ...


9
Owen Harrold D, Rosenthal Wayne O, Young James Douglas: Conduit liner for wellbore and method and apparatus for setting same. Gearhart Owen, January 23, 1973: US3712376 (166 worldwide citation)

A method of emplacing a liner in a conduit in a well penetrating subterranean formations characterized by positioning with a wire line a cylindrical annular liner at a given depth in the well, the liner being disposed adjacent a swaging mandrel and a setting sleeve, both being connected with a setti ...


10
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 ...