1
Jesse Lee, Erik Nelson, Kevin England, Philip Sullivan: Methods for controlling the rheological properties of viscoelastic surfactants based fluids. Schlumberger Technology Corporation, Thomas O Mitchell, Tim Curington, Robin Nava, August 1, 2006: US07084095 (125 worldwide citation)

It was found that the addition of polymers to viscoelastic surfactant base system allows to adjust the rheological properties of the base fluid. Depending in particular on one side of the ratio of the concentration of added polymer and the concentration of viscoelastic surfactant and on the other si ...


2
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 ...


3
John W Still, Keith Dismuke, Wayne W Frenier: Generating Acid Downhole in Acid Fracturing. Schlumberger Technology Corporation, Thomas O Mitchell, Tim Curington, Robin Nava, January 23, 2007: US07166560 (97 worldwide citation)

An acid fracturing method is provided in which the acid is generated in the fracture by hydrolysis of a solid acid-precursor selected from one or more than one of lactide, glycolide, polylactic acid, polyglycolic acid, a copolymer of polylactic acid and polyglycolic acid, a copolymer of glycolic aci ...


4
Virginia Jee, Nicolas Flamant, Hubertus Thomeer, Sarmad Adnan, Michael Gay: Use of distributed temperature sensors during wellbore treatments. Schlumberger Technology, Dave Cate, Tim Curington, Robin Nava, June 6, 2006: US07055604 (90 worldwide citation)

The invention relates to a method for treating subterranean formation comprising providing distributed temperature sensors, injecting a treatment fluid and monitoring the temperature across the treatment interval during the injection process.


5
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 ...


6
Dinesh R Patel, Y Gil Hilsman III, Herve Ohmer, Stephane Hiron, Philippe Gambier, Jonathan K C Whitehead, Randolph J Sheffield, Rodney J Wetzel, John R Whitsitt, Thomas D MacDougall, Nitin Y Vaidya, James D Hendrickson, John E Edwards, Donald W Ross, Rashmi B Bhavsar: System and method to seal using a swellable material. Schlumbeger Technology Corporation, Trop Pruner & Hu P C, Jeremy P Welch, Tim Curington, February 23, 2010: US07665537 (76 worldwide citation)

The invention is a sealing system, such as a packer, that is used in a wellbore to seal against an exterior surface, such as a casing or open wellbore. The sealing system includes a swellable material that swells from an unexpanded state to an expanded state thereby creating a seal when the swellabl ...


7
Saad Bargach, Jean Michel Hache: Drilling rig closed loop controls. Schlumberger Technology Corporation, Tim Curington, Brigitte C Jeffery, Andrews & Kuruth, December 9, 2003: US06662110 (72 worldwide citation)

Method, apparatus and systems for drilling wells, such as for production of petroleum products and ensuring efficient well drilling and protection of well drilling systems during drilling operations. A closed-loop drilling control system, including a digital switching control regulator (SCR) module ...


8
Kevin W England, J Ernest Brown, Jerald J Hinkel, Ramchandra M Reddy: Foaming agents for use in coal seam reservoirs. Schlumberger Technology Corporation, Thomas O Mitchell, Tim Curington, Robin Nava, July 12, 2005: US06915854 (68 worldwide citation)

A well treatment fluid composition that comprises a carrier fluid and an amphoteric surfactant, and optionally a viscosifying agent and proppant, is well suited for use in fracturing coal beds to stimulate methane production. The composition preferably is a foam that comprises a gas such as nitrogen ...


9
Curtis L Boney, Matthew J Miller: Methods for controlling screenouts. Schlumberger Technology Corporation, Thomas O Mitchell, Tim Curington, Robin Nava, September 6, 2005: US06938693 (67 worldwide citation)

Methods are presented to induce a screenout during a subterranean formation fracturing or combined fracturing and gravel packing treatment by laying down a filter cake early in the treatment, then injecting proppant slurry, and then while proppant slurry injection continues chemically damaging the f ...


10
Mehmet Parlar, Mark Brady, Liz Morris: Method for removing filter cake from injection wells. Schlumberger Technology Corporation, Thomas O Mitchell, Tim Curington, Robin Nava, December 27, 2005: US06978838 (63 worldwide citation)

A method is given for completing an interval of an open-hole injection well penetrating a subterranean formation when the interface between the wellbore and the formation includes a zone invaded by a filter cake that includes bridging materials and other embedded solid materials. The method includes ...