1
Philip Sullivan, Yenny Christanti, Isabelle Couillet, Stephen Davies, Trevor Hughes, Alexander Wilson: Methods for controlling the fluid loss properties of viscoelastic surfactant based fluids. Schlumberger Technology Corporation, David Cate, Tim Curington, Robin Nava, July 25, 2006: US07081439 (98 worldwide citation)

Disclosed are methods of treating subterranean formations by first providing a suspension of colloidal particles prior to the injection of viscoelastic based treatment fluid, and injecting the treatment fluid into a well. The colloidal particles reduce fluid loss into the formation. According to a s ...


2
Philip F Sullivan, J Ernest Brown, Jesse C Lee, Golchehreh Salamat: Degradable additive for viscoelastic surfactant based fluid systems. Schlumberger Technology Corporation, Thomas O Mitchell, Darla Fonseca, David Cate, May 22, 2007: US07219731 (83 worldwide citation)

A method is given for treating a subterranean formation penetrated by a wellbore with a viscosified fluid. The fluid contains a solid hydrolysable polyacid that upon dissolution and hydrolysis releases an acid that is a breaker for the viscosifying system. Suitable solid hydrolysable polyacids inclu ...


3
Philip F Sullivan, Curtis L Boney: Dissolving filter cake. Schlumberger Technology Corporation, Thomas O Mitchell, David Cate, Tim Curington, June 27, 2006: US07066260 (81 worldwide citation)

Methods are presented to induce a screenout during a subterranean formation fracturing or combined fracturing and gravel packing treatment having a viscoelastic surfactant-based carrier fluid by laying down a filter cake at least a portion of which is a base-soluble material, injecting proppant slur ...


4
Joseph Varkey, Ravicharan Mydur, Noor Sait, Willem Wijnberg, Sumitra Kunathikom, Monica Darpi: Optical fiber cables for wellbore applications. Schlumberger Technology Corporation, David Cate, Michael Flynn, Jaime Castano, January 29, 2008: US07324730 (78 worldwide citation)

A cable which includes conductor bundles prepared from at least one optical fiber positioned either centrally or helically about the center axis of the bundle, metallic conductors helically positioned around the bundles center axis, and a polymeric insulation material. A method of making a cable inc ...


5
Dean M Willberg, Christopher N Fredd, Marina Bulova: Method of using degradable fiber systems for stimulation. Schlumberger Technology Corporation, Darla Fonsica, David Cate, Robin Nava, October 2, 2007: US07275596 (65 worldwide citation)

A method for minimizing the amount of metal crosslinked viscosifier necessary for treating a wellbore with proppant or gravel is given. The method includes using fibers to aid in transporting, suspending and placing proppant or gravel in viscous carrier fluids otherwise having insufficient viscosity ...


6
Michael J Fuller, Syed Ali, Laurent Pirolli, John W Still: Method and composition for removing filter cake. Schlumberger Technology Corporation, Martin Rzaniak, David Cate, Robin Nava, December 21, 2010: US07855168 (65 worldwide citation)

The current disclosure describes a multifunctional fluid that addresses a new concept in the removal of filter cake. A composition is disclosed comprising: a carrier fluid, a surfactant, a fluorine source and an organic stabilizer able to minimize precipitation of fluorine The associated method to r ...


7
Jeff Beckel, Roger Keese: Method of transporting and storing an oilfield proppant. Schlumberger Technology Corporation, Rodney Warfford, Michael Dae, David Cate, November 23, 2010: US07837427 (62 worldwide citation)

A method of transporting and storing an oilfield proppant is provided that includes transporting the proppant to a storage facility by use of a dump truck; providing a load assembly at the storage facility which comprises a load hopper and a load conveyor; transferring the proppant from the dump tru ...


8
John Daniels, George Waters, Mark Norris, J Ernest Brown, Ian D Bryant, Kevin Mauth, Jason Swaren: Methods of producing flow-through passages in casing, and methods of using such casing. Schlumberger Technology Corporation, David Cate, Robin Nava, Jeffrey Griffin, October 12, 2010: US07810567 (59 worldwide citation)

Methods of making and using wellbore casing are described, one method comprising providing a plurality of flow-through passages in a portion of a casing while the casing is out of hole; temporarily plugging the flow-through passages with a composition while out of hole; running the casing in hole in ...


9
Dean Willberg, Marina Bulova, Christopher N Fredd, Alexey Vostrukhov, Curtis L Boney, John Lassek, Ann M W Hoefer, Philip F Sullivan: Degradable material assisted diversion or isolation. Schlumberger Technology Corporation, Darla Fonseca, David Cate, Robin Nava, June 3, 2008: US07380600 (59 worldwide citation)

A method for well treatment by forming a temporary plug in a fracture, a perforation, a wellbore, or more than one of these locations, in a well penetrating a subterranean formation is provided, in which the method of well treatment includes: injecting a slurry comprising a degradable material, allo ...


10
Xiaowei Weng, J Ernest Brown, Curtis L Boney: Method and apparatus for placement of multiple fractures in open hole wells. Schlumberger Technology Corporation, David Cate, Tim Curington, Robin Nava, August 29, 2006: US07096954 (59 worldwide citation)

A method and apparatus is provided for created multiple fractures in a subterranean formation with a single, continuous treatment operation. A plurality of burst disk assemblies are included, each having an independent burst pressure and corresponding to a specific interval to be treated, whereby th ...