DEVICE FOR DETERMINING CORROSION DAMAGE OF PIPELINES Russian patent published in 1994 - IPC

FIELD: corrosion investigations. SUBSTANCE: device for determining corrosion damage of a pipeline has a stepped cylindrical member a lesser step of which circumscribes a ring member the outer surface of which is adapted for interaction with aggressive medium. The lesser step of the cylindrical member and inner surface of the ring member form an annular cavity. The device furthermore has a cup and a branch pipe with an axial boss and mounting nest in this boss. The cup is located in this nest, its edges resting on the cylindrical member larger step. The branch pipe is adapted for mounting the device as a part of a tubing string. The annular cavity is in communication with the cavity of the cup through a channel in the cylindrical member. The cup wall and branch pipe boss have openings communication with each other for communicating the cup cavity with well space for feeding aggressive medium. The device is provided with an a nut in which a circular groove is formed for mounting a circular specimen in it, a bolt for fixing the nut and specimen to the end-face of the cylindrical member lesser step. EFFECT: reduced time in determining damage in tubing string of gas-lift wells during operation. 2 cl, 1 dwg