Couillet
Isabelle Couillet, Kuala Lumpur MY
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20110021386 | MICROEMULSION TO IMPROVE SHALE GAS PRODUCTION BY CONTROLLING WATER IMBIBITION - The invention provides a method for treating tight gas sand and shale subterranean formations, the method comprising: forming a solvent-surfactant blend by combining a solvent, a surfactant and a co-surfactant; adding a diluent to the solvent-surfactant blend to form a micro emulsion; wherein the wettability of the formation altered from water-wet to gas-wet, and the amount of water imbibed into the formation is reduced. | 01-27-2011 |
20110053807 | METHODS TO CONTROL FLUID LOSS IN A WELL BORE - The invention discloses a method of controlling fluid loss from a subterranean formation of a well bore. In a first aspect, the method is done by providing a treatment fluid made of an aqueous fluid and a hydrophobic polymer; and introducing the treatment fluid into the wellbore. In a second aspect, the method is done by providing a treatment fluid made of water and a water soluble polymer; providing in the treatment fluid a fluid loss additive having a hydrophobic polymer; using the treatment fluid in a well bore of a subterranean formation; allowing the treatment fluid to establish a permeable filter cake with the water soluble polymer in at least a portion of the well bore; and allowing hydrophobic polymer to enter into the filter cake to reduce permeability of the filter cake. | 03-03-2011 |
20110053813 | METHODS TO REDUCE SETTLING RATE OF SOLIDS IN A TREATMENT FLUID - The invention discloses a method of treating a subterranean formation of a well bore: providing a treatment fluid made of: a fluid; a particulate material, and a viscosifier material; wherein the viscosifier material is inactive in a first state and is able to increase viscosity of the treatment fluid when in a second state; introducing the treatment fluid into the wellbore; and providing a trigger able to activate the viscosifier material from first state to second state. | 03-03-2011 |
20110247812 | METHODS TO GRAVEL PACK A WELL USING EXPANDING MATERIALS - An apparatus and a method for treating a subterranean formation penetrated by a wellbore comprising combining a carrier fluid, a first amount of particulates, and a second amount of particulates into a slurry, wherein the first amount of particulates have a first average size distribution and the second amount of particulates have a second average size distribution, wherein the first amount of particulates comprise an expanding material, placing the slurry in the wellbore, and lowering a screen into the slurry. An apparatus and a method of treating a subterranean formation penetrated by a wellbore, the method comprising combining a carrier fluid, a first amount of particulates, a second amount of particulates, and a third amount of particulates into a slurry, wherein the first amount of particulates have a first average size distribution, the second amount of particulates have a second average size distribution, and the third amount of particulates have a third average size distribution, wherein the first average size distribution is at least two times larger than the second average size distribution, and wherein second average size distribution is at least two times larger than the third average size distribution, wherein at least one of the second amount of particulates and the third amount of particulates comprise a expanding material, positioning a screen in a wellbore, and circulating the slurry through the wellbore such that the first amount of particulates and the second amount of particulates are deposited on an outer surface of the screen. | 10-13-2011 |
Isabelle Couillet, Houston, TX US
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20080314594 | Method of Heterogeneous Etching of Sandstone Formations - The invention provides a method of treating a sandstone-containing subterranean formation penetrated by a wellbore. The method is carried out by forming a slurry of a carrier fluid containing a viscosifying agent and encapsulated particles of a hydrogen fluoride source without settling of the particles. The carrier fluid may be an acid-based carrier fluid. The encapsulated hydrogen fluoride source may be encapsulated with a solid polymer acid precursor. The hydrogen fluoride source is present within the slurry in an amount of about 10% or more by weight of the slurry. The slurry is introduced into the wellbore at a pressure above the fracture pressure of the formation under conditions wherein the hydrogen fluoride source is released. | 12-25-2008 |
Isabelle Couillet, Cambridge GB
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20090023616 | AQUEOUS FRACTURING FLUID - The invention concerns an aqueous viscoelastic fracturing fluid for use in the recovery of hydrocarbons. According to the invention, the fluid comprises a cleavable viscoelastic surfactant and a hydrophobically-modified polymer, wherein the cleavable surfactant comprises a head group and a hydrophobic tail of at least 18 carbon atoms connected through a degradable acetal, amide, ether or ester bond and wherein the concentration of the hydrophobically-modified polymer is comprised between its overlap concentration c* and its entanglement concentration c | 01-22-2009 |
Isabelle Couillet, Paris FR
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20110198089 | METHODS TO REDUCE SETTLING RATE OF SOLIDS IN A TREATMENT FLUID - The invention discloses a method of treating a subterranean formation of a well bore, comprising: providing a treatment fluid comprising a carrier fluid, proppant, a viscosifying agent and a viscosifier material, wherein the viscosifier material is inactive in a first state and is able to increase viscosity of the treatment fluid when in a second state; introducing the treatment fluid into the wellbore; and, allowing the treatment fluid to interact with a trigger able to activate the viscosifier material from first state to second state. | 08-18-2011 |
20150041134 | Cement Slurry Compositions and Methods - A cement slurry composition is described as having cement, water, and organic polymer particles. The composition also includes non-ionic surfactants, which may contain ethoxylate groups or contain both ethoxylate groups and propoxylate groups in the hydrophilic part. The non-ionic surfactant acts to disperse the hydrophobic polymeric particles in the slurry, thereby reducing mixing time. The cement slurry composition is prepared and then pumped into the subterranean well and placed in a zone of the subterranean well. Time is then allowed for the cement slurry composition to set and form a solid mass in the zone. | 02-12-2015 |
Romain Couillet, Antibes FR
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20110211652 | Method and Apparatus for OFDM Spectral Diversity Using Guard Bands - An OFDM modulation process and means for transmitting multiple carriers through a communication channel having a bandwidth arranged ion chunks with further subcarriers being allocated to form at least one guard band, comprising automatically and periodically shifting said chunks to the left or to the side in order to overlap said guard band and increase spectral diversity. | 09-01-2011 |
20110305285 | Process and Apparatus for Performing Initial Carrier Frequency Offset in an OFDM Communication System - A process for estimating the carrier frequency offset (CFO) for a Orthogonal Frequency Division Multiplex (OFDM) communication system, said process being performed in a receiver receiving a pilot sequence x=(x | 12-15-2011 |
20120177142 | PRECODING PROCESS FOR A TRANSMITTER OF A MU-MIMO COMMUNICATION SYTSTEM - A Precoding process for a transmitter of a MU-MIMO communication system comprising M antennas in the transmitter and K User Equipments (UE), said precoding being based on a Regularized Zero Forcing (R-ZF) linear precoding. | 07-12-2012 |
Romain Couillet, Antony FR
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20120213315 | PROCESS FOR ESTIMATING THE CHANNEL IN A OFDM COMMUNICATION SYSTEM, AND RECEIVER FOR DOING THE SAME - MIMO receiver for processing N data streams received by N antennas for a direct-sequence (DS) spread-spectrum wireless communication system comprising: | 08-23-2012 |