1
Roger J Card, Paul R Howard, Jean Pierre Feraud, Vernon G Constien: Control of particulate flowback in subterranean wells. Schlumberger Technolgy Corporation, Gordon G Waggett, Robin C Nava, January 9, 2001: US06172011 (208 worldwide citation)

The addition of fibrous mixtures in intimate mixtures with particulates for fracturing and gravel packing decreases or eliminates the undesirable flowback of proppant or formation fines while stabilizing the sand pack and lowering the demand for high polymer loadings in the placement fluids. Fibers ...


2
Qi Qu, Erik B Nelson, Dean M Willberg, Mathew M Samuel, Jesse C Lee Jr, Frank F Chang, Roger J Card, Palathinkara S Vinod, J Ernest Brown, Ronnie L Thomas: Compositions containing aqueous viscosifying surfactants and methods for applying such compositions in subterranean formations. Schlumberger Technology Corporation, Robin C Nava, Thomas O Mitchell, Stephen F Schlather, August 20, 2002: US06435277 (173 worldwide citation)

The improved recovery of hydrocarbons from subterranean formations by hydraulically fracturing a subterranean formation is accomplished. Fracturing fluids using a viscosifying surfactant fluid containing viscosifying micelles, for example, wormlike micelles, are useful to improve recovery of hydroca ...


3
Jerald J Hinkel, Kevin W England: Fluids and techniques for maximizing fracture fluid clean-up. Schlumberger Technology Corporation, Robin C Nava, Maryam Bani Jamali, Thomas Mitchell, February 27, 2001: US06192985 (172 worldwide citation)

The present Invention relates to method to stimulate the production of hydrocarbons from a subterranean formation. In particular, the present Invention discloses and claims methods to enhance the removal of fracturing fluid from a fracture deliberately created in the formation, thereby increasing ef ...


4
Thomas O Mitchell, Roger J Card, Arthur Gomtsyan: Cleanup additive. Schlumberger Technology Corporation, Robin C Nava, Thomas Mitchell, John J Ryberg, June 5, 2001: US06242390 (162 worldwide citation)

According to the present invention, a composition and method for hydraulically fracturing a subterranean formation is provided. The composition comprises an aqueous mixture of a hydrated polysaccharide, preferably a galactomannan gum, the hydrated polysaccharide having a plurality of bonding sites; ...


5
Jerald J Hinkel, Kevin W England: Enhancing fluid removal from fractures deliberately introduced into the subsurface. Schlumberger Technology Corporation, Douglas Y Barbo, Robin C Nava, May 30, 2000: US06069118 (156 worldwide citation)

The present Invention relates to hydrocarbon well stimulation, and more particularly to methods and compositions to remove (or more generally to transfer) fluid introduced into a subsurface fracture, in which the methods involve creating then exploiting chemical potential gradients at the fracture f ...


6
Claude J Vercaemer, Brian W E Darling: Method and apparatus for cementing a well. Schlumberger Technology Corporation, Gordon G Waggett, Robin C Nava, July 11, 2000: US06085838 (144 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 ...


7
John Villar, Jean Francois Baret: Cementing slurry and method of designing a formulation. Schlumberger Technology Corporation, Gordon G Waggett, Robin C Nava, November 28, 2000: US06153562 (127 worldwide citation)

The present invention provides a cementing composition for an oil or analogous well, essentially constituted by a solid fraction suspended in a liquid medium. The solid fraction is constituted by a coarse fraction with a packing volume fraction .PHI..sub.1 which, according to the invention, is maxim ...


8
Jerald J Hinkel, Kevin W England: Method and apparatus for deliberate fluid removal by capillary imbibition. Schlumberger Technology Corporation, Douglas Y&apos Barbo, Robin C Nava, Thomas O Mitchell, September 4, 2001: US06283212 (127 worldwide citation)

The present Invention relates to hydrocarbon well stimulation, and more particularly to methods and compositions to remove (or more generally to transfer) fluid introduced into the subsurface. For instance, preferred methods involve creating then exploiting a capillary pressure gradient at the fract ...


9
Bernard A Montaron: Method and apparatus for completing a well for producing hydrocarbons or the like. Schlumberger Technology Corporation, Gordon G Waggett, Robin C Nava, June 26, 2001: US06250385 (117 worldwide citation)

The invention relates to an expandable liner for completing a hole in an underground formation, the liner being constituted by a spiral-wound strip with the longitudinal edges of the strip having complementary touching profiles so that after it has been expanded, the liner is circular in section. Th ...


10
Veronique Barlet Gouedard, Bernard Dargaud, Andre Garnier, Pierre Maroy: Cementing compositions and the application of such compositions to cementing oil or analogous wells. Schlumberger Technology Corporation, Robin C Nava, Thomas O Mitchell, John J Ryberg, November 6, 2001: US06312515 (111 worldwide citation)

The invention concerns cementing compositions, particularly for squeeze cementing, comprising a liquid phase and a solid phase constituted by particulate materials which are insoluble in said liquid phase, in particular a microcement. The compositions of the invention comprise additives of a nature ...