TEST TUBE WITH AN INLET FOR FILLING WITH FLUID AND EXPELLING AIR, AND WITH ENHANCED RESISTANCE AND SEALING FOR THE BOP TESTING STEP IN DRILLING SYSTEMS

Fluid tube for sealing test in the BOP chamber. The test tube (1) used in the BOP chamber (C) resistance test step has its hollow structure filled internally and totally through a fluid (F) input (4). Thereby, wrapped by closing the drawers (G), after injection in the test fluid chamber (C), due to the filling fluid volume (F) internally and resulting air exhaustion into the hollow structure, the zest tube obtains a supplementary structure resistance against the pressure applied within the chamber (C), preventing unwanted distortions. The tube obtains an effective sealing due to the filling fluid volume (F) that exhausts the air within it, stopped internally with the couplings of the screwed pin (3) threads and the female thread (R) of the plug (TA) or test plug, preventing the test fluid into the chamber (C) to leak and enter its hollow structure. Therefore, the supplementary structure anti-distortion system, air absence inside the tube and test tube stoppage system avoid false pressure relieve into the chamber (C) to the sensors distributed therein, not detecting false leakages, making the BOP resistance analysis against potential oil/gas leakages precise during the probing procedure.