Methodological Features of Determining the Total Permeability of Shale Deposits
A. Borisov, V.A. Nachev, F. Denisenko and A. Cheremisin
Event name: Geomodel 2019
Session: Современные методы решения прямых и обратных задач и машинного обучения
Publication date: 17 September 2019
Info: Extended abstract, PDF ( 561.75Kb )
Price: € 20
The paper deals with the methodological and metrological features of determining the permeability of shale reservoirs. The authors performed a series of experiments on the measurement of permeability as a standard Permeameter PIC-PP (analogue of the AP-608), as well as on shale permeameters Darcy-Press and SMP-200. Measurements were carried out on samples of Domanik and Bazhenov deposits. The samples were investigated in non-extracted and extracted condition. Measurements on solid samples were performed by Pulse-Decay and Pseudo Steady-State and Build-Up methods. Measurements crushed samples were carried out according to the method GRI-95/0496. The paper identifies a number of important factors affecting the results of measuring the permeability of shale rock samples. These factors are the method of sealing side surface, the format of the sample, pressure gradient, crimping, method of preparation, method of measurement, methods of quality control. The authors give recommendations on the implementation of permeability measurements in shale deposits. According to the results of R&D, the authors came to the conclusion that the measurements of the permeability of shale rocks are significantly different from the measurements of the permeability of classical reservoirs. These measurements require special approaches to the measurement procedure and sample preparation, as well as special equipment.