Device and method for evaluating affinity of carbon dioxide-philic proppant to carbon dioxide-based fracturing fluid

• Main Authors: JIANG LUJUN, FU LIPEI, HUANG WEIQIU, REN ZHANGKUN, LIAO KAILI, AN JUNNAN, HE YANFENG, ZHANG HOUYE, GU FENG
• Format: Patent
• Language: Chinese; English
• Published: 08.02.2022
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention belongs to the technical field of oil and gas resource exploitation and relates to a device and a method for evaluating affinity of a carbon dioxide-philic proppant to a carbon dioxide-based fracturing fluid. The device comprises a carbon dioxide pressurization system, a carbon dioxide-based fracturing fluid preparation system, a carbon dioxide-philic proppant repeated sedimentation system and a data acquisition and control system. According to the device, a carbon dioxide-based fracturing fluid system with corresponding performance can be constructed according to experimental requirements, repeated settling velocity of the carbon dioxide-philic propping agent in the carbon dioxide-based fracturing fluid is measured, and affinity of different types of carbon dioxide-philic propping agents and the carbon dioxide-based fracturing fluid with different characteristics is preliminarily represented; on the basis, the change relation of the repeated settling velocity along with the contact time of the