Acceleration test method for dynamic corrosion of rock by supercritical carbon dioxide

• Main Authors: ZHANG XIAO, AN QIYI, SUN YUXUE, YU HAO, YIN ZHANCHAO, ZHANG QINGSONG, LIU YANSHUN, ZHANG XUHAO
• Format: Patent
• Language: Chinese; English
• Published: 30.04.2021
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to an accelerated test method for dynamic corrosion of rocks by supercritical carbon dioxide, and belongs to the technical field of rock mechanical tests. The method comprises the following steps: providing a high-pressure condition (0-40MPa) by using a carbon dioxide high-pressure plunger pump, providing a high-temperature condition (0-400 DEG C) by using a heating system, carrying out an accelerated test by using the provided high-temperature condition, and providing a fluid flowing condition by using a stirring device; simulating a reservoir environment in a high-temperature and high-pressure reaction kettle, so that a test method foundation is laid for a rock acidification test, and a long-term dynamic corrosion action mechanism of supercritical carbon dioxide on rock is disclosed. The test adopts an acceleration test method, so that the effect of shortening the test time is achieved, the repeatability of the test is enhanced, the test has enough repeated observation times, and the o