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US 2021/0262918 A1Published application
Corrosion testing device
AssigneeTenaris Connections Limited
InventorMiguel Sandro Nicolino
Life of this patent
Estimating the term…
Abstract
A corrosion testing device comprising a coupon holder for a sucker rod of a pump system and at least one coupon for corrosion testing, wherein the coupon holder comprises a holder body having an outer body surface and an inner contact surface, which inner contact surface is placeable on an outer rod surface of the sucker rod and defines a longitudinal body axis of the holder body, the at least one coupon is attached to the holder body and positioned at the outer body surface and at a radial coupon distance from the longitudinal body axis, the outer body surface comprises at least one guiding surface part located at a radial surface distance from the longitudinal body axis, and the radial surface distance is larger than the radial coupon distance.
Claims28
A corrosion testing device comprising:
- a coupon holder for a sucker rod of a pump system, the coupon holder comprising a holder body having an outer body surface and an inner contact surface, which inner contact surface is placeable on an outer rod surface of the sucker rod and defines a longitudinal body axis of the holder body;
- and
- at least one coupon for corrosion testing, wherein,
- the at least one coupon is attached to the holder body and positioned at the outer body surface and at a radial coupon distance from the longitudinal body axis,
- the outer body surface comprises at least one guiding surface part located at a radial surface distance from the longitudinal body axis, and
- the radial surface distance is larger than the radial coupon distance.
3 more elements
A sucker rod for a pump system, comprising:
- an outer rod surface, and
- at least one corrosion testing device that comprises:
- a coupon holder comprising a holder body having an outer body surface and an inner contact surface that is placed on the outer rod surface of the sucker rod and defines a longitudinal body axis of the holder body;
- and
- at least one coupon for corrosion testing, the at least one coupon attached to the holder body and positioned at the outer body surface and at a radial coupon distance from the longitudinal body axis, the outer body surface comprises at least one guiding surface part located at a radial surface distance from the longitudinal body axis, the radial surface distance larger than the radial coupon distance.
2 more elements
A pump system comprising:
- a sucker rod configured to move within a wellbore, the sucker rod comprising an outer rod surface;
- and
- at least one corrosion testing device that comprises:
- a coupon holder comprising a holder body having an outer body surface and an inner contact surface that is placed on the outer rod surface of the sucker rod and defines a longitudinal body axis of the holder body;
- and
- at least one coupon for corrosion testing, the at least one coupon attached to the holder body and positioned at the outer body surface and at a radial coupon distance from the longitudinal body axis, the outer body surface comprises at least one guiding surface part located at a radial surface distance from the longitudinal body axis, the radial surface distance larger than the radial coupon distance.
3 more elements
A method to test at least one material for use in a wellbore, in particular for use as a pipe section in the wellbore, the method comprising:
- fixating a coupon holder of a corrosion testing device on an outer rod surface of a sucker rod of a pump system, wherein the at least one coupon comprises the at least one material, and the corrosion testing device comprises:
- the coupon holder comprising a holder body having an outer body surface and an inner contact surface that is placed on the outer rod surface of the sucker rod and defines a longitudinal body axis of the holder body, and
- the at least one coupon that is attached to the holder body and positioned at the outer body surface and at a radial coupon distance from the longitudinal body axis, the outer body surface comprises at least one guiding surface part located at a radial surface distance from the longitudinal body axis, the radial surface distance larger than the radial coupon distance;
- placing the sucker rod and the corrosion testing device in the wellbore and reciprocally moving the sucker rod and the corrosion testing device within the wellbore for a predetermined time period;
- and
- removing the sucker rod from the wellbore and analyzing the at least one coupon of the corrosion testing device to determine a corrosion rate for each of the at least one coupon.
3 more elements
A kit of parts comprising;
- a coupon holder having a holder body with an outer body surface and an inner contact surface, which inner contact surface is placeable on an outer rod surface of a sucker rod for a pump system and defines a longitudinal body axis of the holder body, the outer body surface comprising at least one guiding surface part located at a radial surface distance from the longitudinal body axis,
- at least one coupon for corrosion testing, and
- at least one attachment unit to attach the at least one coupon to the holder body of the coupon holder in a coupon position at the outer body surface, the at least one coupon in the coupon position located at a radial coupon distance from the longitudinal body axis, which radial coupon distance is smaller than the radial surface distance.
A coupon holder, comprising:
- a holder body with an outer body surface;
- and
- an inner contact surface, which inner contact surface is placeable on an outer rod surface of a sucker rod for a pump system and defines a longitudinal body axis of the holder body, wherein:
- the outer body surface comprises at least one guiding surface part located at a radial surface distance from the longitudinal body axis,
- at least one attachment unit is provided to attach at least one coupon for corrosion testing to the holder body of the coupon holder in a coupon position at the outer body surface, and
- in use, the at least one coupon in the coupon position is located at a radial coupon distance from the longitudinal body axis, which radial coupon distance is smaller than the radial surface distance.
3 more elements
Dependencies are inferred from the claim text.