Experimental device and method for simulating liquid-phase damage and damage relief of condensate gas reservoir

• Main Authors: YUAN CHENGANG, SUN YU, HE ZHIYUE, LONG JICHANG, FENG XIAORONG, TANG KAI, TANG YONG, LONG KEJI, DUAN SHENGCAI
• Format: Patent
• Language: Chinese; English
• Published: 26.05.2023
• 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 discloses an experimental device and method for simulating condensate gas reservoir liquid phase damage and relieving damage. The experimental device comprises a first high-pressure high-precision displacement pump, an inlet pressure gauge, a formation condensate gas container, a first formation water container, a second formation water container, a natural gas container, a blocking remover container, a vacuum pump, a long core holder, a three-phase separation system, a constant-temperature drying oven, a gas flowmeter, a second high-pressure high-precision displacement pump, a confining pressure pump, an outlet pressure gauge and a confining pressure gauge. And a back-pressure valve. According to the device, reverse water injection simulation reverse condensation and water locking comprehensive liquid phase damage after long rock core reverse condensation damage and reverse injection blocking remover well closing liquid phase damage relieving experiments are performed on the long rock core afte