| CPC E21B 33/1208 (2013.01) | 16 Claims |
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1. A plug assembly (200) arranged in a housing (140) for use in a downhole tool comprising:
a glass assembly (15) comprising a plug (10);
a seat (20) arranged to support the plug (10);
a breaker object (30) arranged to break the plug (10) upon contact with the plug (10); and
a tensile release mechanism (50) comprising:
a tensile body (51);
a tensile element (52);
wherein:
the tensile element (52) is arranged along the tensile body (51);
the tensile release mechanism (50) arranged to break at the tensile element (52) at an applied threshold tensile force;
wherein:
the plug assembly (200) is arranged to have a first position and a second position,
in the first position, the plug (10) is intact and fluid flow through the plug assembly is blocked, and
in the second position, the plug assembly (200) is arranged such that after a threshold pressure has been applied to the plug assembly (200), the seat (20) moves with the respect to the breaker object (30), the tensile element (52) is broken, and the plug (10) is broken by the breaker object (30); and
pressure applied to the plug (10) is arranged to apply a tensile force to the tensile release mechanism (50); and
wherein the tensile body (51) further comprises:
a first tensile body part (51A) and a second tensile body part (51B) separated by the tensile element (52),
wherein the first tensile body part (51A) is stationary with respect to the housing (140) between the first and second position and the second tensile body part (51B) supports the seat (20) in the first position; and
wherein the breaker object (30) is arranged in a breaker holder (31) in the tensile release mechanism (50).
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