Patents by Inventor Henri Cholet
Henri Cholet 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).
-
Patent number: 6336796Abstract: A progressive-cavity pump intended to impart energy to a fluid, includes at least a casing (1), a stator (2) and a rotor (3) arranged in the stator. The casing has at least two parts, a first part (2a) made of a material of low elasticity and a second part (2b) arranged between the inner wall (1a) of the housing and the first part 2(a), the second part (2b) being suited to apply and/or to maintain a stress &sgr; exerted by the first part (2a) on the rotor (3) in order to obtain the pressure gain required for the pumped fluid.Type: GrantFiled: June 7, 2000Date of Patent: January 8, 2002Assignee: Institut Francais du PetroleInventors: Henri Cholet, Eric Vandenbroucke
-
Patent number: 5829529Abstract: The present invention relates to a pumping method and device in a well comprising a portion that is greatly inclined with respect to the vertical. A pump is secured to a strong of tubes that are lowered into the well. Suction devices are set into the greatly inclined well portion at the lower end of the pumping means. At least one suction port is placed laterally with respect to the suction devices and in a single direction. The direction of the port is oriented so that it is substantially opposite a lower generating line of the well. In a variant, the suction devices comprise an articulated body that can place the port opposite the lower generating line of the well.Type: GrantFiled: November 20, 1996Date of Patent: November 3, 1998Assignee: Institut Francais de PetroleInventors: Henri Cholet, Christian Wittrisch, Jack Bootsman
-
Patent number: 5667369Abstract: This invention relates to a system for pumping an effluent that is produced by a geological formation, in which a rotary pump (3) is installed and driven in rotation by a continuous tube (12) that rises up to the surface. The tube makes it possible to inject a fluid, for example, a liquefier or a lubricant. This invention also relates to a pumping method in which rotor (24) of the pump is installed with a continuous tube (12), of the "coil tubing" type.Type: GrantFiled: November 27, 1995Date of Patent: September 16, 1997Assignee: Institut Francais Du PetroleInventor: Henri Cholet
-
Patent number: 5562433Abstract: The present invention relates to a system for pumping an effluent produced by a geologic formation at the bottom of a well, comprising a pump located in the well and rods connecting the pump to the surface. The pump includes at least a stator and a rotor. The rods are rotated by surface means driving the rotor into rotation to pump the fluid and to drive the fluid towards the surface through an annular pipe external to the rods. The system includes a mechanism for holding the rotor in the stator and for transmitting the rotation of the rods to the rotor. The pump includes means suited for allowing injection, from discharge area (26), of at least part of the effluent produced into the mechanism so as to ensure the lubrication thereof.Type: GrantFiled: December 16, 1994Date of Patent: October 8, 1996Assignee: Institut Francais Du PetroleInventors: Henri Cholet, Herve Petit
-
Patent number: 5348094Abstract: A device for pumping a fluid of high viscosity containing a gas and a liquid phase which includes a pump connected to a lower end of a tubular string at the bottom of a well and a device for separating free gas from the liquid phase and for injecting a thinner into the fluid to reduce the viscosity. Injection of the thinner is effected at fluid inlet ports of an inlet device for separating the free gas via a pipe leading to the surface of a geological formation in which the well is positioned. Also, a pumping method using the device involves injecting the thinner into the fluid of high viscosity near an inlet of the pump.Type: GrantFiled: June 14, 1993Date of Patent: September 20, 1994Assignee: Institut Francais du PetroleInventors: Henri Cholet, Jacques Lessi
-
Patent number: 5320500Abstract: The invention concerns a continuous mixing device (1) having a rotating shaft (4) fitted with blades (7, 7a). The mixture obtained at the outlet from the mixer results from admitting to the mixer a high-viscosity fluid (22) and at least one fluid of a lower viscosity. The mixing device is suitable for providing a mixture of lower viscosity compared with the most viscous fluid admitted at the inlet (2, 38) of the mixer. The invention provides a method of pumping a viscous fluid and use of the mixing device in an installation for pumping a high viscosity crude oil.FIG. 1 to be published.Type: GrantFiled: September 10, 1992Date of Patent: June 14, 1994Assignee: Institut Francais Du PetroleInventor: Henri Cholet
-
Patent number: 5280825Abstract: The invention relates to a device for cleaning a horizontal drain (10) adapted for being disposed at the end of two concentric pipe columns (14, 16). This device includes a body (20) provided with at least one cleaning fluid outlet port (38) and with at least one return port (30) for the fluid loaded with particles.The outlet ports are directed towards the wall of the drain and located at a predetermined distance from the return ports.The invention further relates to an installation for the cleaning of horizontal drains and to a method for implementing the installation.Type: GrantFiled: June 22, 1992Date of Patent: January 25, 1994Assignee: Institut Francais du PetroleInventor: Henri Cholet
-
Patent number: 5113937Abstract: A device is disclosed for separating a mixture of free gas and liquid at the intake of a pump connected to a bottom end of a tubular column at the bottom of a drilled well. The pump is connected to the tubular column by an intermediate production tube and is introduced into a fluid intake device a bottom end of which is closed and a top end comprises fluid introduction orifices, said pump being placed inside said intake device, close to its bottom end, said intake device comprising, close to its bottom end, a device forming at least a check valve.Type: GrantFiled: December 28, 1990Date of Patent: May 19, 1992Assignee: Institut Francais de PetroleInventor: Henri Cholet
-
Patent number: 5086842Abstract: According to one significant characteristic of this invention, the device includes a nozzle (38) for projecting cleaning fluid and connected to a deflector (44) which directs the fluid jet in the direction of the wall of the drain and in particular towards the lower wall of said drain where solid sediments or deposits accumulate. In one embodiment the fluid jet projected by the nozzle (38) and loaded with particles removed from the drain is sucked in via a Venturi effect and the fluid and particles are brought back to the surface.Type: GrantFiled: September 7, 1990Date of Patent: February 11, 1992Assignee: Institut Francais du PetroleInventor: Henri Cholet
-
Patent number: 4957161Abstract: The device comprises a tubing (4) whose lower end is connected to a seat (5) on which bears a gear pump (6). The pump (6) comprises a pump case whose lower portion (10a) is engaged in a bore (5b) of the pump seat (5) and is connected to a cylindrical heavy body (20) which facilitates placing the pump (6) in position and maintaining the pump (6) on the seat (5). The weight of the heavy body (20) is determined as a function of the gear pump characteristics. The invention may be applicable to the pumping of petroleum fluids.Type: GrantFiled: May 15, 1989Date of Patent: September 18, 1990Assignee: Institut Francais du PetroleInventors: Henri Cholet, Edmond Chanton
-
Patent number: 4886131Abstract: A drilling tool including cutting teeth carried by rollers or conically-shaped wheels, with an irrigation arrangement being provided for delivering at least one irrigation fluid jet through a calibrated orifice. A center of the fluid jet at an outlet of the orifice is disposed at a distance from a plane perpendicular to an axis of the tool passing through an apex of the teeth of the drilling tool as viewed from a working face of the drilling tool. A magnitude of the tool diameter, height of the teeth, and distance are determined in accordance with the following relationships:d>1.8 H and0.125D<d<0.185 Dwhere:d=a distance between a center of the outlet orifice of a plane perpidencular to the tool axis and passing through tips of the teeth nearest to the working face of the drilling tool;H=a height of the teeth of the drilling tool; andD=a diameter of the drilling tool.Type: GrantFiled: August 31, 1988Date of Patent: December 12, 1989Assignee: Institut Francais du PetroleInventors: Henri Cholet, Christian Bardin
-
Patent number: 4738320Abstract: A method and improvement to drilling tools efficient cleaning of the cutting face. The method improves the removal of cuttings from a drilling tool rotating, more especially on itself in operation, about the axis of the tool, said tool comprising a body having a first end adapted for connection to rotary drive means and the second end defining a cutting face. The zone of said second end adajcent said axis is designated as the central part of the tool and said tool comprises at least one nozzle. The method consists in positioning said nozzles so as to produce a flow orientated towards the central part of the tool, the vector obtained by the orthogonal projection on a plane perpendicular to the axis of the tool of the speed of said flow in the central part of the tool being zero at any point of said central part, said vector forming the effective speed vector.Type: GrantFiled: June 27, 1985Date of Patent: April 19, 1988Assignees: Christian Bardin, Henri CholetInventors: Christian Bardin, Henri Cholet
-
Patent number: 4733734Abstract: A method and a drilling tool are provided improving removal of spoil during drilling. The method allows the spoil to be removed from a drilling tool rotating, more especially on itself in operation, about a proper axis, or axis of the tool, said tool comprising a body a first end of which is adapted for connection to rotary drive means and the second end of which, said second end comprising water passages, defines the cutting face, the zone of said second end adjacent said axis is called central part of the tool, said tool comprises at least one nozzle. The method consists in positioning said nozzle in a water passage for producing a flow orientated towards the central part of the tool, and since the vector obtained by the orthogonal projection on a plane perpendicular to the axis of the tool of the speed of said flow in the central part of the tool is zero at any point of said central part, said vector will be qualified as effective speed vector.Type: GrantFiled: June 27, 1985Date of Patent: March 29, 1988Assignee: Institut Francais du PetroleInventors: Christian Bardin, Henri Cholet
-
Patent number: 4718824Abstract: A control process for a rotary pump which is immersed in a fluid produced by a well involves the use of a rotary pump driven by a variable speed motor and comprises the steps of acting upon the rotational speed of the motor according to a pressure difference which exists between the pressure of the fluid measured in the proximity of the pump and the production pressure of the well. The production pressure P of the well being given by the formula:P=P.sub.G -Q/I.sub.pwherein P.sub.G is equal to the pressure of the unused deposit; that is, the pressure of the fluid deposit when the fluid deposit is at rest and there is no production of the well, Q equals the pump flow rate according to the motor rotation speed and I.sub.p is equal to the well productivity indication.Type: GrantFiled: September 12, 1984Date of Patent: January 12, 1988Assignee: Institut Francais du PetroleInventors: Henri Cholet, Francois-Jean Trocqueme, Jean Garraux
-
Patent number: 4378051Abstract: The device, which is connected to an element to be displaced, comprises a tubular body surrounded by sleeves which are inflated to a diameter slightly smaller than the diameter of the conduit. A motor-pump assembly located in the tubular body provides for the circulation of the fluid through the body so as to cause propulsion of the device within the conduit. Sensors may control automatic operation of the device and inflation of the sleeves to the selected diameter.Type: GrantFiled: December 19, 1980Date of Patent: March 29, 1983Assignee: Institut Francais du PetroleInventors: Henri Cholet, Robert Desbrandes, Guy Norel
-
Patent number: 4245708Abstract: A stabilizer for a tool, such as a rotary drill bit, comprises at least two blades spaced radially about the axis of the tool. Two adjacent blades define a venturi-shaped free angular space for a flow of drilling fluid. The width of each of the blades increases over at least a first portion, measured from the lower end of the blade, of the height of each blade. The height of the first portion is at least equal to one half of the width of the lower end of the free angular space.Type: GrantFiled: February 12, 1979Date of Patent: January 20, 1981Assignee: Institut Francais du PetroleInventors: Henri Cholet, Jean Boulet
-
Patent number: 4240513Abstract: This drill bit comprises a plurality of rollers provided with cutting teeth or inserts.At least one vertical fluid flushing jet is directed towards the hole bottom between two adjacent rollers and at least one upwardly directed education jet is created. The nozzle delivering the flushing jet opens at a distance from between 1/3 H and 4/5 H from the hole bottom, H being the height of the cutters measured in a direction parallel to the bit axis.Type: GrantFiled: January 26, 1978Date of Patent: December 23, 1980Assignee: Institut Francais du PetroleInventors: Yvon Castel, Henri Cholet
-
Patent number: 4239087Abstract: This drill bit comprises a plurality of rollers provided with cutting teeth or inserts.At least one upwardly directed eduction jet is created and the bit comprises at least one nozzle located between two adjacent rollers and creating at least two fluid jets respectively directed towards these two adjacent rollers.Type: GrantFiled: January 26, 1978Date of Patent: December 16, 1980Assignee: Institut Francais du PetroleInventors: Yvon Castel, Henri Cholet
-
Patent number: 4222447Abstract: A rotary drilling tool has a plurality of rollers, each of which is provided with a specific pair of jets comprising a flushing jet having a downwardly directed component and an upwardly directed eduction jet, these jets being formed on both sides of the plane defined by the bit axis and the roller axis, and the flushing jet being inclined by at least 20.degree. on said plane and substantially tangent to the active part of the roller.Type: GrantFiled: November 21, 1978Date of Patent: September 16, 1980Assignee: Institut Francais du PetroleInventor: Henri Cholet