TECTONIC DEFORMATION INFLUENCE ON FILTRATION-CAPACITIVE PROPERTIES OF DEEP-LYING ROCKS

• Дата: 2019
• Автори: Bondar, H.M., Yevdoschuk, M.I., Zimin, O.L.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: Institute of Geological Sciences, NAS of Ukraine 2019
• Теми: фільтраційно-ємнісні та колекторські властивості; незворотна деформація; нерівномірне тривісне стиснення і розтягування; межа міцності; тріщини; розпушення; розущільнення; 622.02(021); фильтрационно-емкостные и коллекторские свойства; необратимая деформация; неравномерное трехосное сжатие и растяжение; предел прочности; трещины; разрыхление; разуплотнение; filtration-capacitive and collector properties; irreversible deformation; uneven triaxial compression and extension; break point; fractures; loosening; decompression
• Онлайн доступ: http://geojournal.igs-nas.org.ua/article/view/169932
• Назва журналу: Geological journal

The paper is dealing with the study of deformation and strength properties of various rocks, as well as collector properties of oil and gas reservoirs under various stress conditions, that are typical for large depths. Some features of fractures formation and development in heterogeneous solids under extension and compression are identified. The characteristic features of the mechanism of irreversible deformation of rocks under uneven volume-strained state are considered. It has been defined that under conditions typical for depths of 8–10 km, irreversible deformation occurs with decompression of their structure, increasing the coefficients of porosity and permeability. Different dependences of volume growth and coefficient of permeability on the all-round compression under uneven triaxial stress, based on data of sandstone and marble, are shown. Typical diagrams of rocks deformations under uneven allround compression also are shown.