| 摘要 |
The invention relates to an apparatus and a method for testing concrete/cement mixtures intended for use with cementing of casings in subsea bore holes for oil and/or gas wells. The apparatus comprises a chamber (1, 1') for the accommodation of a pipe-like test container (6) for the concrete sample. The chamber (1, 1') and, consequently, the pipe-like test container (6) as well as the concrete sample may be subjected to pressure and temperature conditions substantially simulating the conditions at the intentional place of application for the cement mixture, measuring instrument means being arranged for the measurement of i.a. temperature, hydrostatic pressure and differential pressure during that part of the test which is conducted within the chamber (1, 1'). In order to establish said pressure conditions, the concrete sample within the container (6) in the chamber (1, 1') is supplied with gas, and measurements are also conducted in order to determine the magnitude of the amount of gas which has migrated into and out from the concrete sample. When the concrete sample has hardened, the pipe-like container (6) is removed from the chamber (1, 1'), and the concrete sample may thereafter be subjected to further analysis. |
