Measuring and testing – With fluid pressure – Leakage
Patent
1984-10-22
1986-03-25
Myracle, Jerry W.
Measuring and testing
With fluid pressure
Leakage
73 46, 228103, G01M 304
Patent
active
045774889
ABSTRACT:
An apparatus and method is disclosed for testing leaks in welds securing a wellhead to a caisson on which the wellhead is mounted without waiting for the welds to cool. The wellhead is placed in co-axial, overlapping relationship around a portion of the caisson on which it is to be mounted to form an annular chamber between the caisson and wellhead. The chamber has an open annular upper junction and an open annular lower junction formed by the overlap between the wellhead and caisson, and a continuous weld is placed along each of these junctions to secure the wellhead to the conduit. Oil is heated to a temperature similar to the temperature of the welds, wellhead and caisson after welding, and this oil is introduced into the chamber before the welds, wellhead and caisson have cooled to test for leaks in the welds. An apparatus for introducing the heated fluid into the chamber is also disclosed, and the apparatus comprises a cylindrical, sealed container for the oil with a heating jacket wrapped around the container for transmitting heat to the container. Cold oil is introduced into the top of the container under pressure, thereby forcing heated oil out of the container, through an outlet tube and to the chamber. This apparatus and method permits testing of welds while they are still hot, thereby eliminating the necessity of waiting for the welds, wellhead and conduit to cool.
Broadus Ronnie J.
Slade Randall
Myracle Jerry W.
Roskos Joseph W.
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