1
Roger J Card, J Ernest Brown, Palathinkara S Vinod, Dean M Willberg, Mathew M Samuel, Frank F Chang: Methods for limiting the inflow of formation water and for stimulating subterranean formations. Schlumberger Technology Corporation, Douglas Y Barbo, November 9, 1999: US05979557 (299 worldwide citation)

A method is provided for limiting the inflow of formation water during a well turn around to maximize polymer recovery after a hydraulic fracturing treatment of a formation. The method includes a step for selectively blocking the pore structure in a water-bearing zone and not blocking the pore struc ...


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
Raymond J Tibbles, Mehmet Parlar, Frank F Chang, Diankui Fu, Jonathan Mark Davison, Elizabeth W A Morris, Antje M Wierenga, Palathinkara S Vinod: Fluids and techniques for hydrocarbon well completion. Schlumberger Technology Corporation, Gordon G Waggett, Robin C Nava, Douglas Y Barbo, October 31, 2000: US06140277 (87 worldwide citation)

The Invention relates to novel fluids and techniques to optimize/enhance the production of hydrocarbon from subterranean formations (e.g., "completion fluids"), in particular, fluids and techniques are disclosed and claimed which remove wellbore damage and near-wellbore damage in the form of coating ...


4
Frank F Chang, Qi Qu, Matthew J Miller: Fluid system having controllable reversible viscosity. Schlumberger Technology Corporation, Dough Y&apos Barbo, Thomas O Mitchell, June 4, 2002: US06399546 (75 worldwide citation)

This Invention relates to a novel reversible thickener, i.e., a fluid whose viscosity can be carefully modulated—from very low viscosity to sufficient viscosity to act as a barrier to further flow; particularly preferred embodiments are directed to fluids and methods for stimulating hydrocarbon low ...


5
Mathew M Samuel, Frank F Chang, Roger J Card, Ronnie L Thomas: Compositions containing aqueous viscosifying surfactants and methods for applying such compositions in subterranean formations. Schlumberger Technology Corporation, Catherine Menes, Brigitte Jeffery, John Ryberg, October 28, 2003: US06637517 (75 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 ...


6
Frank F Chang, Mehmet Parlar: Method and composition for controlling fluid loss in high permeability hydrocarbon bearing formations. Schlumberger Technology Corporation, Robin C Nava, Thomas O Mitchell, January 29, 2002: US06342467 (58 worldwide citation)

A chemical system and method to stop or minimize fluid loss during completion of wells penetrating hydrocarbon formations are provided. The inventions relates to formulating a highly stable crosslinked hydroxyethyl cellulose (HEC), control released viscosity reduction additives, and user friendly pa ...


7
Frank F Chang, Mehmet Parlar: Method and composition for controlling fluid loss in high permeability hydrocarbon bearing formations. Schlumberger Technology Corporation, Douglas Y Barbo, November 9, 1999: US05981447 (56 worldwide citation)

A chemical system and method to stop or minimize fluid loss during completion of wells penetrating hydrocarbon formations are provided. The inventions relates to formulating a highly stable crosslinked hydroxyethyl cellulose (HEC), control released viscosity reduction additives, and user friendly pa ...


8
Frank F Chang, Qi Qu, Matthew J Miller: Fluid system having controllable reversible viscosity. Schlumberger Technology Corporation, Thomas O Mitchell, Catherine Menes, Brigitte Jeffery, December 23, 2003: US06667280 (54 worldwide citation)

This Invention relates to a novel reversible thickener, i.e., a fluid whose viscosity can be carefully modulated—from very low viscosity to sufficient viscosity to act as a barrier to further flow; particularly preferred embodiments are directed to fluids and methods for stimulating hydrocarbon low ...


9
Frank F Chang, Mehmet Parlar: Method and composition for controlling fluid loss in high permeability hydrocarbon bearing formations. Maryam Bami Jamali, December 26, 2000: US06165947 (49 worldwide citation)

A chemical system and method to stop or minimize fluid loss during completion of wells penetrating hydrocarbon formations are provided. The inventions relates to formulating a highly stable crosslinked hydroxyethyl cellulose (HEC), control released viscosity reduction additives, and user friendly pa ...


10
Wayne Frenier, Frank F Chang: Composition and method for treating a subterranean formation. Schlumberger Technology Corporation, Thomas O Mitchell, Robin Nava, Brigitte L Echols, October 19, 2004: US06806236 (31 worldwide citation)

Aqueous liquid compositions for increasing the permeability of a subterranean formation are disclosed, the compositions being characterized by provision of fluoborate anion (fluoboric acid) and a specified compound or compounds, or mixture thereof, which chelate aluminum ions and aluminum fluoride s ...