METHOD FOR TESTING NON-UNIFORM LOADS IN PIPES

摘要

The present invention refers to a method wherein a test body is assembled in specific configurations to be submitted to testing in a conventional hydrostatic chamber. The method calls for assembling a test body that simulates cementing failures, the presence of stress anisotropy and a borehole of irregular geometry, by pressurizing said test body in a conventional hydrostatic chamber. The uniform forces are distributed circumferentially around a casing stream in a non-uniform way, simulating operating conditions that are as close as possible to reality, enabling an analysis of how the structure reacts in scenarios similar to actual conditions.

主权项

1. METHOD FOR TESTING NON-UNIFORM LOADS ON PIPES, which employs a conventional hydrostatic chamber (200) provided with a test body (10), characterised by being comprised of the following steps:
assembling test bodies (10) of specific configurations, simulating the non-uniform loads generated by situations such as cementing failures, the presence of stress anisotropy in the borehole and irregular geometry; placing said test body (10) in a conventional hydrostatic chamber (200) and pressurizing said chamber; applying uniform stresses generated by a hydrostatic chamber (200) and by compressors (15) and (15b), in such a way as to enable changing the pressure in the simulated failure area and the inside the casing string, reproducing a controlled scenario of non-uniform forces (N) acting on the casing under (100) under analysis; measuring the displacement and strain using sensor elements placed in the pipe representing the casing string (100).