VALLOUREC OIL AND GAS FRANCE Patent applications |
Patent application number | Title | Published |
20160002476 | THREADED TUBULAR COMPONENT PROTECTED BY A FILM - A tubular component includes at least one threaded portion for connecting the component with a complementary component, wherein at least a portion of the threaded portion is coated with a strippable film which protects against corrosion. The film can be manually strippable. The film can be applied to a lubricating layer which has already been deposited on the surface of the threaded portion. The strippable film can be used to improve maintenance of mechanical properties of the threaded portion during storage thereof. | 01-07-2016 |
20150308605 | DEVICE FOR PROTECTING A MALE END OF A COMPONENT OF A FLEXIBLE-JOINT THREADED TUBULAR CONNECTION - A temporary protector of a male end of a component of a threaded tubular connection, including externally at least one threading and a free end part. The protector includes a coupling to protect at least part of the external threading and the free end part and including a threading that can engage with the threading of the male end, and a sealing device configured to be placed in contact with the component, at least in a part located downstream of the external threading of the male end, and to provide a seal downstream of the external threading. The sealing device includes a portion of small diameter including an internal sealing surface that can interact hermetically with an external surface of the body, and a portion of large diameter including an internal sealing surface interacting hermetically with an external surface of the coupling, the sealing device being radially elastic. | 10-29-2015 |
20150308201 | METHOD FOR CHECKING A SCREWING STATE OF A TUBULAR THREADED SEAL - A method for monitoring a makeup state of a threaded connection including a male threaded tubular element and a female threaded tubular element. In the method, during makeup of the male threaded element into the female threaded element, a variation with time of a dimensional characteristic of at least one of the elements is measured in a pre-defined direction. Next, the variation with time of the characteristic is analyzed to determine a makeup state for the threaded connection. | 10-29-2015 |
20150247060 | PROCESS FOR PREPARING A STABLE AQUEOUS DISPERSION OF POLYAMIDE-IMIDE WHICH IS FREE OF CARCINOGENIC, MUTAGENIC OR REPROTOXIC SUBSTANCES, AND APPLICATION TO COATINGS - The invention concerns a process for preparing an aqueous polyamide-imide dispersion, characterized in that it comprises at least one step of selecting a polyamide-imide powder and a step of producing a dispersion comprising the polyamide-imide powder, a polar aprotic solvent with a boiling point of more than 180° C. at 760 mm Hg, and water. The invention also concerns a process for producing a dry polyamide-imide film on a substrate. | 09-03-2015 |
20150240570 | SCREW JOINT FOR STEEL PIPE - In a screw joint for a steel pipe, a taper angle of a tapered surface of a pin is substantially the same as a taper angle of a tapered surface of a box. In addition, the pin and the box interfere with each other in a radial direction while a seal surface of the pin and a seal surface of the box contact each other in a process of make-up between a male screw portion and a female screw portion, and at least apart of the seal surface of the pin comes into close contact with at least a part of the seal surface of the box over the entire circumference. Moreover, a contact pressure amplification mechanism, which increases a contact pressure between the seal surface of the pin and the seal surface of the box at the completion of the make-up, is further provided. | 08-27-2015 |
20150240119 | PROCESS FOR PRODUCING A DRY POLYAMIDE-IMIDE FILM WITH HIGH GALLING RESISTANCE ON A THREADED TUBULAR COMPONENT FROM AN AQUEOUS DISPERSION WHICH IS FREE OF CARCINOGENIC SUBSTANCES - The invention concerns a process for producing a dry film with a high galling resistance on a threaded element for drilling and/or operating a hydrocarbon well, characterized in that it comprises at least the following steps: forming a stable dispersion comprising a polyamide-imide powder, a polar aprotic solvent with a boiling point of more than 180° C. at 760 mm Hg, and water; applying the dispersion to one of the ends ( | 08-27-2015 |
20150210888 | COMPOSITION FOR SOLID COATING FORMATION AND TUBULAR THREADED JOINT - A composition for solid coating formation, includes a composition made by containing, in a mixed solvent including water and a dipolar aprotic solvent, a powdery organic resin which is partially soluble at least in the dipolar aprotic solvent. The powdery organic resin is present in a state of being dissolved or dispersed in the mixed solvent. | 07-30-2015 |
20150192229 | TUBULAR THREADED JOINT HAVING IMPROVED HIGH-TORQUE MAKEUP PROPERTIES - A tubular threaded joint has a pin and a box. Each having a contact surface comprising a threaded portion and an unthreaded metal contact portion including a seal portion and a shoulder portion. A solid lubricating coating having a relatively high Knoop hardness is formed on a portion including the shoulder portion of the contact surface, such as the unthreaded metal contact portion including the shoulder portion and the seal portion, of at least one of the pin and the box. A solid lubricating coating having a relatively low Knoop hardness is formed at least on the remaining portion of the contact surface, such as the threaded portion. The threaded joint has excellent galling resistance, gas tightness, and rust preventing properties. The joint does not readily undergo yielding of shoulder portions even when made up with a high torque, thereby making it possible to perform makeup in a stable manner. | 07-09-2015 |
20150191674 | TUBULAR THREADED JOINT AND LUBRICATING COATING FORMING COMPOSITION FOR USE THEREIN - Provided is a composition for forming a lubricating coating to a tubular threaded joint. The composition contains a melamine cyanurate, a basic metal salt of an aromatic organic acid, and one or more kinds selected from the group consisting of a pine resin-based material, a wax, a metal soap, and a lubricating powder. | 07-09-2015 |
20150136590 | ELECTRO PLATING DEVICE - An electro plating device includes a pipe inside seal mechanism which occludes an inner channel of a steel pipe, a tubular insoluble electrode which is disposed in a pipe end so as to be opposite to a female screw, a plating solution feed mechanism which includes a plurality of nozzles which extend radially with a pipe axis of the steel pipe as a center, and a pipe end seal mechanism which accommodates the nozzles thereinside and is mounted to the pipe end, when viewed in the pipe axial direction, a tip of each of the nozzles is positioned between the female screw and the insoluble electrode, and each of the nozzles injects the plating solution toward a direction which intersects an extension direction of the nozzle, the direction being a rotational direction of a clockwise direction or a counterclockwise direction in which the pipe axis is the center. | 05-21-2015 |
20140367119 | THREADED JOINT WITH LOW TIGHTENING TORQUE - A threaded tubular connection includes a first body terminated by an external abutment, and linked to a male threading prolonged by a terminal portion forming an internal abutment surface at its axial end, such that the connection includes a second body defining a bearing surface for the external abutment at one free end, and including an initial portion on its internal surface connecting the bearing surface to a female threading, made up onto the male threading, and terminating in an internal shoulder facing the internal abutment, such that the linking profile between one of the following: the external abutment, the internal abutment, the bearing surface, and/or the internal shoulder, has a profile with a variable diameter in cross section, over a length of the body which is less than the terminal portion or initial portion. | 12-18-2014 |
20140361530 | THREADED TUBULAR COMPONENT AND METHOD FOR COATING SUCH A THREADED TUBULAR COMPONENT - The invention concerns a tubular element for drilling and/or working hydrocarbon wells, having an end ( | 12-11-2014 |
20140360036 | DEVICE FOR MEASURING AN INTERNAL OR EXTERNAL PROFILE OF A TUBULAR COMPONENT - A device includes a first sensor for making a radial measurement of a tubular component and a support which can drive the first sensor in a circular trajectory in a predefined plane orthogonal to the principal axis of the component. The support includes a principal body that can be attached to the component by a releasable attachment mechanism and a rotary shaft onto which an arm carrying the first sensor is attached to allow displacement of the first sensor in a circular trajectory inside or about the component. The device further includes a second sensor for measuring an angular position of the first sensor for each of its radial measurements, the radial and angular measurements obtained allowing the profile of the component in the predefined plane to be determined. | 12-11-2014 |
20140327242 | TUBULAR COMPONENT FOR BORING AND EXPLOITING HYDROCARBONS WELLS AND RESULTANT THREADED JOINT - An assembly for producing a threaded connection for drilling or working hydrocarbon wells, the connection including first and second tubular components with an axis of revolution, each including respective male and female ends, at least one of the male or female ends finishing in a terminal surface including a first abutment surface that can come into interfering contact when connection is made against a second abutment surface provided on a shoulder produced on the other end, at least one of the first and second abutment surfaces being hollowed out by a groove, thereby defining an exterior abutment zone and an interior abutment zone. In the connection made state, the exterior and interior abutment zones are not coplanar, such that contact pressure of the interior abutment zone exerted in vicinity of the groove is greater than or equal to a minimum value for contact pressure exerted in the exterior abutment zone. | 11-06-2014 |
20140308455 | METHOD FOR FINISHING A TUBULAR THREADED MEMBER WITH A DRY PROTECTION COATING - A tubular threaded element including a dry protective coating. The coating includes a solid matrix adhering to the substrate in which there are dispersed particles of at least one solid lubricant belonging to one and the same class. The solid matrix is lubricating and has a rheological behaviour of plastic or viscoplastic type. The coating protects the threadings of the threaded elements, used for example in hydrocarbon wells, from corrosion and galling. | 10-16-2014 |
20140284919 | TUBULAR THREADED JOINT HAVING IMPROVED HIGH TORQUE PERFORMANCE - A tubular threaded joint is constituted by a pin and a box each having a contact surface comprising an unthreaded metal contact portion including a seal portion and a shoulder portion and a threaded portion. Of the contact surface of at least one of the pin and the box, the surfaces of the seal portion and the shoulder portion has a first lubricating coating in the form of a solid lubricating coating, and the surface of the threaded portion or the entire surface of the contact surface has a second lubricating coating selected from a viscous liquid lubricating coating and a solid lubricating coating. The first lubricating coating has a coefficient of friction which is higher than that of the second lubricating coating, and the second lubricating coating is positioned on top in a portion where both the first lubricating coating and the second lubricating coating are present. | 09-25-2014 |
20140238661 | THREADED TUBULAR COMPONENT AND RESULTING CONNECTION - A threaded tubular component configured for drilling or working hydrocarbon wells, the tubular component including, at one of its ends, a threaded zone formed on its external or internal peripheral surface depending on whether the threaded end is male or female in type. The end portion is at least partially coated with a dry film, including a thermoplastic or thermoset matrix including microcapsules filled with compounds in liquid form. | 08-28-2014 |
20140203556 | ASSEMBLY FOR PRODUCING A THREADED JOINT FOR THE DRILLING AND OPERATION OF HYDROCARBON WELLS, AND RESULTING THREADED JOINT - An assembly for production of a threaded connection, including a first and a second tubular component with an axis of revolution and each including at one of its ends at least one first threaded zone produced on an external or internal peripheral surface of the component depending on whether the threaded end is male or female in type, and capable of cooperating together on makeup, the ends finishing in a terminal surface. At least one of the threaded zones has, in longitudinal section passing through the axis, a profile that follows a continuous and concave portion of a curve over at least 10% of the length of engaged threads of the threaded zone. | 07-24-2014 |