Patents by Inventor Pierre Maroy
Pierre Maroy has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7385019Abstract: Water-based fluids that can viscosify under shear or can produce a gel or form a gel under shear are obtained by dissolving polymers in an aqueous phase. These polymers comprise three types of functional groups: non-ionic functional groups that are hydrosoluble at the temperature under consideration, ionic functional groups, and functional groups that are hydrophobic at the temperature under consideration. These three types of functional groups can be distributed or spread in a random distribution along the polymer chain. A slightly block distribution is acceptable. For applications to oil wells, functional groups are used which exhibit LCST (Lower Critical Solution Temperature) behavior (i.e., a low critical solution temperature) instead of hydrophobic functional groups. At temperatures below the LCST, the functional groups are hydrophobic.Type: GrantFiled: June 11, 2002Date of Patent: June 10, 2008Assignee: Schlumberger Technology CorporationInventors: Pierre Maroy, Arnaud Cadix, Dominique Hourdet, Ilias Iliopoulos, Françoise Lafuma
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Publication number: 20080032899Abstract: It is proposed a new family of terpolymers based on repeating units of two different types of hydrophobic moieties modified with anionic charged groups. In a preferred embodiment, the first hydrophobic moiety is an aromatic compound such as styrene and the second hydrophobic moiety is a fatty acid. Depending on the modification rate, and on the neutralization degree, the aqueous solutions of the terpolymers have different rheological behavior, ranging from yield point fluid, shear-thickening and polysoaps.Type: ApplicationFiled: June 14, 2005Publication date: February 7, 2008Inventors: Jean-Philippe Caritey, Christophe Chassenieux, Francoise Lafuma, Christille Le Chatelier-Brunet, Pierre Maroy
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Patent number: 6883609Abstract: The present invention concerns a cement slurry with high permeability and good compressive strength, comprising a solid fraction constituted by: 35% to 80% (by volume) of particles with a mean size in the range 100 microns (?) to 800?; 0% to 15% (by volume) of particles with a mean particle diameter in the range 0.1 microns to 10 microns; and 10% to 40% (by volume) of particles with a mean particle diameter in the range 20? to 50?; a fraction of said-solid particles being constituted by a cement, and preferably a further fraction by self-destructive particles; a liquid fraction in a water/solid ratio in the range 38% to 50% by volume; and a percentage of cells, provided by a gas or a liquid which is not miscible with water, in the range 30% to 60% of the final volume of the slurry.Type: GrantFiled: May 11, 2001Date of Patent: April 26, 2005Assignee: Schlumberger Technology CorporationInventors: Bruno Drochon, Pierre Maroy
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Patent number: 6874578Abstract: Method of well cementing with a foamed slurry having a very low water content. When based on ordinary cement, the solid fraction of the slurry includes (by volume) 20-35% Portland cement, 35-65% particles ranging from 200 ?m to 600 ?m, and 5% to 25% of fine particles in the range 0.5 ?m to 5 ?m and the water content is less than 50% by volume. When based on micro-cement, the solid fraction includes (by volume) 50-75% micro-cement, 15-40% fine particles in the range 0.5 ?m to 5 ?m, and 0-20% particles in the rang 3 nanometers to 60 nanometers and the water content is less than 72% by volume.Type: GrantFiled: February 16, 2000Date of Patent: April 5, 2005Assignee: Schlumberger Technology CorporationInventors: Andre Garnier, Slaheddine Kefi, Pierre Maroy, Anne-Marie Schulz, Joachim Schulz
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Publication number: 20040266629Abstract: Water-based fluids that can viscosify under shear or can produce a gel or form a gel under shear are obtained by dissolving polymers in an aqueous phase. These polymers comprise three types of functional groups: non-ionic functional groups that are hydrosoluble at the temperature under consideration, ionic functional groups, and functional groups that are hydrophobic at the temperature under consideration. These three types of functional groups can be distributed or spread in a random distribution along the polymer chain. A slightly block distribution is acceptable. For applications to oil wells, functional groups are used which exhibit LCST (Lower Critical Solution Temperature) behavior (i.e., a low critical solution temperature) instead of hydrophobic functional groups. At temperatures below the LCST, the functional groups are hydrophobic.Type: ApplicationFiled: August 23, 2004Publication date: December 30, 2004Inventors: Pierre Maroy, Arnaud Cadix, Dominique Hourdet
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Publication number: 20040244654Abstract: An additive for use in aqueous cement slurries which adapted such that, when added to an aqueous cement slurry, it migrates to an interface between the slurry and an adjacent solid material or fluid composition during a setting phase of the cement because of the passing of the upper limit of solubility in the water of the additive.Type: ApplicationFiled: February 13, 2004Publication date: December 9, 2004Inventors: Mickael Allouche, Pierre Maroy
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Patent number: 6656266Abstract: Cementing compositions which are particularly suitable for squeeze cementing operations, comprise an aqueous phase, and a micro-cement, the aqueous phase including an aqueous suspension comprising a vinyl acetate type polymer obtained by chemically cross-linking a polyvinyl compound, a nanolatex and an anionic surfactant with a cloud point of more than 80° C.Type: GrantFiled: September 20, 2001Date of Patent: December 2, 2003Assignee: Schlumberger Technology CorporationInventors: Véronique Barlet-Gouedard, Pierre Maroy, Bruno Langlois, Roland Reeb
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Publication number: 20030168215Abstract: The present invention concerns a cement slurry with high permeability and good compressive strength, comprising a solid fraction constituted by: 35% to 80% (by volume) of particles with a mean size in the range 100 microns (&mgr;) to 800 &mgr;; 0% to 15% (by volume) of particles with a mean particle diameter in the range 0.1 microns to 10 microns; and 10% to 40% (by volume) of particles with a mean particle diameter in the range 20 &mgr; to 50 &mgr;; a fraction of said-solid particles being constituted by a cement, and preferably a further fraction by self-destructive particles; a liquid fraction in a water/solid ratio in the range 38% to 50% by volume; and a percentage of cells, provided by a gas or a liquid which is not miscible with water, in the range 30% to 60% of the final volume of the slurry.Type: ApplicationFiled: March 25, 2003Publication date: September 11, 2003Inventors: Bruno Drochon, Pierre Maroy
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Patent number: 6616751Abstract: A cementing composition comprising a hydraulic cement powder dispersed in a solvent that is miscible both with water and hydrocarbons to make a slurry. The cement powder can be made up simply of hydraulic cement materials or can be a mixture of such materials with particles that are inert or reactive with cement. The composition can also include surfactants or retarders. The composition is used to plug water production in a well while leaving hydrocarbon production unaffected.Type: GrantFiled: November 13, 2000Date of Patent: September 9, 2003Assignee: Schlumberger Technology CorporationInventors: Pierre Maroy, Jack Maberry
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Patent number: 6586371Abstract: The present invention provides a water-based fluid, in particular for drilling, completion or for any other intervention in a well such as a hydrocarbon well, in which the viscosity is controlled by a system constituted by precipitated silica nanoparticles (A) associated with a water-soluble copolymer (B) comprising one or more water-soluble co-monomers (I) having little or no affinity for silica and one or more co-monomers (II) which absorb onto the silica. The invention is of particular application to the secondary recovery of hydrocarbons.Type: GrantFiled: October 19, 2000Date of Patent: July 1, 2003Assignee: Schlumberger Technology CorporationInventors: Pierre Maroy, Francoise Lafuma, Coralie Simonet
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Patent number: 6511537Abstract: Systems for retarding setting in an oilfield well cement slurry comprise a solution of a phosphonate selected from methylene phosphonic acid derivatives and a phosphate, in particular selected from the following salts or the corresponding acids: mono-phosphates (ortho-phosphates PO42; meta-phosphates PO3), acyclic poly-phosphates (pyrophosphates P2O74, tripolyphosphates P3O105) or cyclic poly-phosphates. The system preferably may also comprise a retarder booster and is more particularly applicable to cementing at low or medium temperatures.Type: GrantFiled: October 20, 2000Date of Patent: January 28, 2003Assignee: Schlumberger Technology CorporationInventors: Véronique Barlet-Gouedard, Fabien J. Brand, Pierre Maroy, Frederik Nilsson
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Patent number: 6390197Abstract: Methods of treating wells for cementing operations and for improving placement of cement in wells containing water swelling clays include treatment of the well with a fluid containing clay precipitating agents capable of coagulating clays in the well. The coagulating fluid can contain quaternary ammonium salts, aqueous salts of potassium or cesium, or silicates as the clay coagulating agent. The coagulating fluids can be applied to convert soft mud cake into hard mud cake prior to placement of cement.Type: GrantFiled: May 18, 2000Date of Patent: May 21, 2002Assignee: Schlumberger Technology CorporationInventor: Pierre Maroy
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Patent number: 6312515Abstract: 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 and composition such that variations in viscosity of the composition due to fluid loss are minimized. Preferably, the compositions comprise at least one “very fine” additive formed from particles which are smaller than the cement, with a ratio of the average grain sizes of the particles of said additive and those of the cement in the range 5 to 100, preferably about 10, the respective proportions of the solid particles corresponding to a packing volume fraction close to the maximum, and the porosity of the solid mixture being such that the mixture is in a state of hindered settling.Type: GrantFiled: June 12, 1996Date of Patent: November 6, 2001Assignee: Schlumberger Technology CorporationInventors: Veronique Barlet-Gouedard, Bernard Dargaud, Andre Garnier, Pierre Maroy
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Patent number: 6277900Abstract: The present invention relates to copolymers consisting of (a) 1-99% by weight of structural units of the formula (1) where R1 is hydrogen or methyl, R4 is C1-C22-alkylene, R5 is C1-C22-alkyl or hydrogen, and X is ammonium, lithium, sodium, potassium, an amine or a mixture of these substances, and (b) 99-1% by weight of structural units of the formula (2) where R1 is hydrogen or methyl, R2 and R3, independently of one another, are hydrogen, or C2-C22-alkyl, wherein component b) is not hydrolysed and the copolymers have been prepared by a solution precipitation polymerization in a nonaqueous solvent or a water-miscible, organic solvent having a low water content which is a precipitant for the copolymer. The invention furthermore relates to a process for cementing subterranean wells using a cement slurry comprising the following components: a) water of various salinity cement a novel copolymer in a concentration of 0.01-5% bwoc, preferably from 0.05 to 0.Type: GrantFiled: November 19, 1998Date of Patent: August 21, 2001Assignee: Clariant GmbHInventors: Reinhard Oswald, Volker Frenz, Juergen Tonhauser, Aranka Tardi, Pierre Maroy, Florence L'Alloret
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Patent number: 5972849Abstract: In the presence of certain crude oils, when ferric iron exists in very acidic fluid, it practically instantaneously forms precipitates known as sludges which lead to irreversible damage. Iron control compositions and acid fluids containing such iron control compositions are disclosed. For acid fluids containing up to 15% acid, the iron control composition includes a reducing agent selected from a substituted and unsubstituted thiourea compounds, and a reduction catalyst including a copper (cuprous or cupric) compound. When the acid fluid contains more than 15% acid, for example from 15 to 28% acid, the reducing agent is again selected from substituted or unsubstituted thiourea compounds, and the reduction catalyst is a combination of a copper (cuprous or cupric) compound and iodine (iodine or iodide ions).Type: GrantFiled: November 6, 1995Date of Patent: October 26, 1999Assignee: Schlumberger Technology CorporationInventors: Jean-Pierre Feraud, Herve Perthuis, Philippe Dejeux, Pierre Maroy
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Patent number: 5594050Abstract: The invention relates to a new, chemically crosslinked PVA. Its application is that of a fluid loss control agent in fluids used in the oil industry, in particular cement slurries, separating fluids, or "spacers", and drilling muds. Its advantages are that it does not delay the setting of the cement, that it has high temperature properties that are relatively insensitive to external conditions.Type: GrantFiled: March 27, 1996Date of Patent: January 14, 1997Assignee: Dowell Schlumberger IncorporatedInventors: Roland Audebert, Joseph Janca, Pierre Maroy, Hugo Hendriks
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Patent number: 5547926Abstract: The invention relates to iron control in an acid medium for forestalling the formation of precipitates known as "sludges" (asphaltic products) in contact with certain crude oils.Use is made of compounds comprising a mercaptan function non miscible in water and, in combination, a selection of catalysts.Application to acid treatments for oil, gas, water, geothermal and analogous wells, as well as to industrial cleaning.Type: GrantFiled: July 9, 1992Date of Patent: August 20, 1996Assignee: Dowell, a division of Schlumberger Technology CorporationInventors: Herve Perthuis, Jean-Pierre Feraud, Philippe Dejeux, Pierre Maroy
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Patent number: 5518996Abstract: The particulate phase of fluids according to the present invention comprises particles which have specifically adapted size ranges or granulometries. All the essential properties of fluids and their cost are very clearly improved. The technique may be applied to all well operations in oil wells or the like, such as in matrix treatment and the like.Type: GrantFiled: August 30, 1995Date of Patent: May 21, 1996Assignee: Dowell, a division of Schlumberger Technology CorporationInventors: Pierre Maroy, Jean-Francois Baret
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Patent number: 5503672Abstract: The invention relates to the cementing of high temperature wells. The retarder consists of a methylene phosphonic acid derivative and of a boric acid or a borate at least as acid as borax in an aqueous solution, in particular, Na pentaborate, in a preferred ratio of 0.08 to 0.92 parts by weight. A long setting time and a very swift compressive strength development are obtained at the same time.Type: GrantFiled: March 8, 1994Date of Patent: April 2, 1996Assignee: Dowell, a division of Schlumberger Technology CorporationInventors: Veronique Barlet-Gouedard, Hugo Hendriks, Pierre Maroy
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Patent number: 5348644Abstract: In a fluidized catalytic cracking (FLC) type unit for contacting of a hydrocarbon feedstock with hot solid particles in a fluidized bed in an upright tubular-type upflow hydrocarbon conversion reactor, there is provided, between the means for fluidization and the means for injection of the feedstock, a means for causing the fluidized phase at the periphery of the reactor to rotate about the axis of the reactor.Type: GrantFiled: November 13, 1990Date of Patent: September 20, 1994Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Pierre Maroy, Roben Loutaty, Thierry Patureaux