Method for calculating volume of dischargeable brine in sediment gap of salt-cavern gas storage

• Main Authors: LI PENG, ZHAO KAI, LI YINPING, MA HONGLING, LIU YUANXI, SHI XILIN, YANG JIE, ZHAO AHU
• Format: Patent
• Language: Chinese; English
• Published: 04.12.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to the technical field of underground exploration of oil and gas resources, in particular to a method for calculating the volume of dischargeable brine in sediment gaps of a salt-cavern gas storage. The method comprises the following steps: preparing a sediment sample in a target salt bed; acquiring an expansion coefficient of the sediment sample; obtaining a crushing and expanding coefficient of the sediment sample; obtaining a water holding coefficient of the sediment sample; and calculating the volume of the dischargeable brine of the target salt bed. According to themethod, the expansion coefficient, the crushing expansion coefficient and the water holding coefficient for representing the actual physical state of the sediment in the target salt bed are obtained by utilizing the sediment sample in the target salt bed, and then the underground cavern at the target salt bed is accurately modeled in combination with the related field parameters in the salt cavernwater-dissolving cavern-m