Evaluation method for mobility of reservoir fluid of oil and gas reservoir

• Main Authors: HE PUWEI, HU YONG, WANG JUNJIE, XU CHANGHAI, YANG DONGFAN, ZHANG LIANJIN, LAN XUEMEI
• Format: Patent
• Language: Chinese; English
• Published: 18.01.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses an evaluation method for mobility of reservoir fluid of an oil and gas reservoir, which belongs to the technical field of oilfield development. The evaluation method provided by the invention comprises the following steps of firstly, converting a saturated water T2 spectrum curve by adopting CT pore size distribution, and solving an optimal conversion coefficient in combination with an error analysis method, obtaining indoor experiment pressure difference and flow velocity by utilizing a similarity transformation principle, and testing to obtain a displacement T2 spectrum curve, and according to the optimal conversion coefficient C0, the saturated water T2 spectrum curve and the displacement T2 spectrum curve, further converting to obtain a saturated fluid accumulation curve and a bound fluid accumulation curve, and further evaluating the mobility of the fluid. According to the method, CT pore size distribution, nuclear magnetic resonance T2 spectrum, error analysis and the like are co