Device and method for testing retrogression damage of near-wellbore zone of condensate gas reservoir with high condensate oil content

• Main Authors: QIN JIAZHENG, SUN YU, HONG YINGHE, HE YOUWEI, HU SHILAI, TANG YONG, LONG KEJI, WANG YONG, CHEN KUN
• Format: Patent
• Language: Chinese; English
• Published: 07.03.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to the technical field of retrogression damage evaluation of condensate gas field development, in particular to a device and a method for testing retrogression damage of a near-wellbore zone of a condensate gas reservoir with high condensate oil content. Comprising a long core holder, a first two-way valve, a second two-way valve, a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve, a first three-way valve, a second three-way valve, a third three-way valve, a confining pressure pump, a confining pressure gauge, a vacuum pump, a high-pressure high-precision displacement pump, a first intermediate container, an outlet pressure gauge, a displacement pump, a back-pressure valve, a gas meter and a second intermediate container, the device comprises an inlet pressure gauge, a test tube, a constant-temperature oven, a gas flow meter, a chromatographic instrument, a six-way valve, a sample preparation device and a constant-temperature box, and is used for