Method and Apparatus for Testing a Tubular Annular Seal

摘要

The present invention provides an apparatus and method for testing a wellbore, and to an apparatus and method to efficiently and effectively test the annular seal of a tubular string positioned within a wellbore. More specifically, the cement seal between a casing string and a wellbore is tested to assure there is no contamination of groundwater or between different geologic formations. An additional aspect of the present invention is to provide a testing assembly comprising a frangible body and a tool body, the tool body providing a passageway to the annular seal when the frangible body is drilled out. In one particular embodiment, the frangible body initially forms an encapsulated bore that aligns with the passageway.

主权项

1. A downhole casing assembly adapted for positioning and testing the cement integrity within a wellbore, comprising:
a testing assembly body having an interior surface defining a cavity and at least one aperture extending through the body to an exterior surface; a frangible body positioned within the testing assembly body and comprising material adapted to seal the at least one aperture; and wherein a passageway is created between the cavity and the exterior surface of the testing assembly when the frangible body is substantially removed.