PRESSURE INTEGRITY TESTING SYSTEM Russian patent published in 2016 - IPC E21B33/12 

FIELD: mining.

SUBSTANCE: group of inventions relates to an annular barrier system and to a method of testing pressure integrity of a well using the system. Annular barrier system for proving a testable annular barrier arranged between a first metal casing or borehole and a second metal casing, second metal casing having an outer face. Annular barrier system comprises a first annular barrier and a second annular barrier. Each barrier comprises: tubular part, made of metal extending in a longitudinal direction for mounting as part of the second metal casing, expandable metal sleeve surrounding and connected with the tubular part and defining an annular barrier space, and a first fluid passage in the tubular part for letting fluid into the annular barrier space to expand the sleeve. Annular barrier system further comprises a sensor, connected to the tubular part, and when the expandable sleeves are expanded to abut the first metal casing or borehole, first annular space is defined between the annular barriers, wherein the sensor (9) is arranged to determine a condition of the annular space in order to test the isolation ability of at least one of the annular barriers.

EFFECT: improved annular packers system, which can be leak-tested without at the same time breaking the pressure integrity.

19 cl, 12 dwg