Device and method for evaluating integrity of full-size cement sheath under underground working condition
The invention discloses a device and a method for evaluating the integrity of a full-size cement sheath under an underground working condition, and mainly aims to provide an experimental device for simulating the underground working condition in a full-size and full-process manner, and the experimen...
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| creator | PENG YANG YAN KAI ZHOU NIANTAO LIN YUANHUA GONG CHENGMENG XIE PENGFEI DENG KUANHAI MEI ZONGBIN YANG MINGQING |
| description | The invention discloses a device and a method for evaluating the integrity of a full-size cement sheath under an underground working condition, and mainly aims to provide an experimental device for simulating the underground working condition in a full-size and full-process manner, and the experimental device is matched with a corresponding experimental method so as to solve the defects existing in the existing indoor cement sheath integrity research. The device is characterized in that the upper end cover and the lower end cover are used for sequentially installing the full-size casing pipe and the simulation stratum pipe and sealing the full-size casing pipe and the simulation stratum pipe through pressure generated by the double-thread screw, then annular pressurization is conducted on the inner portion of the full-size casing pipe so as to simulate the situation of changes of the inner pressure of the casing pipe under different working conditions during production, and cement paste is injected into the a |
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| subjects | EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MEASURING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR |
| title | Device and method for evaluating integrity of full-size cement sheath under underground working condition |
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