Abstract: A triaxial test system and method including a core sample, high temperature-resistant drains disposed around the core sample, and at least one and optionally two high temperature-resistant elastomeric sealing membranes disposed about the drains and sample. Preferred for use is a shear-resistant and high temperature-resistant sealing membrane such as a Viton membrane, optionally in combination with a silicone high temperature-resistant sealing membrane. The system and methods can be used to test core samples in compliance with ASTM standard test methods for triaxial compression tests, at temperatures of between about 100° C. and 200° C., optionally between about 175° C. and 200° C., for extended periods of time, for example several days or longer.

Abstract: A system for more accurate mechanical integrity testing of a borehole and cavity has a mechanical integrity testing tool suspended by a wireline from surface to a test depth. Distributed temperature and acoustic sensing systems respectively record distributed temperature and noise measurements along the wireline. First and second pressure sensors measure uphole and downhole pressures. The mechanical integrity testing tool has an interface detection device, which can have an Iridium-192 gamma ray source having a shorter half-life relative to conventional sources. The interface level, distributed temperature measurements, and uphole and downhole pressure measurements can be used to calculate the volume and/or mass of test fluid that has leaked out of the borehole and/or cavity over the test period. The acoustic sensing system can be used to detect and confirm the presence of a leak. The temperature and/or acoustic sensing systems can be used to identify the location of the leak.

Abstract: A system for more accurate mechanical integrity testing of a borehole and cavity has a mechanical integrity testing tool suspended by a wireline from surface to a test depth. Distributed temperature and acoustic sensing systems respectively record distributed temperature and noise measurements along the wireline. First and second pressure sensors measure uphole and downhole pressures. The mechanical integrity testing tool has an interface detection device, which can have an Iridium-192 gamma ray source having a shorter half-life relative to conventional sources. The interface level, distributed temperature measurements, and uphole and downhole pressure measurements can be used to calculate the volume and/or mass of test fluid that has leaked out of the borehole and/or cavity over the test period. The acoustic sensing system can be used to detect and confirm the presence of a leak. The temperature and/or acoustic sensing systems can be used to identify the location of the leak.

Abstract: A triaxial test system and method including a core sample, high temperature-resistant drains disposed around the core sample, and at least one and optionally two high temperature-resistant elastomeric sealing membranes disposed about the drains and sample. Preferred for use is a shear-resistant and high temperature-resistant sealing membrane such as a Viton membrane, optionally in combination with a silicone high temperature-resistant sealing membrane. The system and methods can be used to test core samples in compliance with ASTM standard test methods for triaxial compression tests, at temperatures of between about 100° C. and 200° C., optionally between about 175° C. and 200° C., for extended periods of time, for example several days or longer.