TY - JOUR N2 - The problem of effective gas extraction from Polish shale rocks is an interesting research subject for scientists. A properly selected proppant, which protects cracks from closing during the fracturing process, inestimably contributes to an increase of extraction. Grains of proppant are transported along with a fracturing medium to reach the deepest regions of the crack. The proper support of the crack provides an easy flow of gas, therefore it is important in terms of extraction efficiency. This paper shows the interactions of a proppant grain with the crack surface in shale rock. FEM analysis was conducted to observe the stress region, which is generated as a result of pressing the grain into the crack surface. A model of a sphere which was pressed into the rock model with constant velocity was applied. The received results of stress depend on material properties and a range of proppant grain pressing. L1 - http://www.journals.pan.pl/Content/115583/PDF/04_ace-2018-0016.pdf L2 - http://www.journals.pan.pl/Content/115583 PY - 2018 IS - No 2 EP - 65 KW - FEM analysis KW - proppant KW - shale rock KW - crack KW - fracturing KW - contact KW - slave KW - master KW - embedment KW - Newmark A1 - Kwietniewski, M. A1 - MiedziƄska, D. A1 - Niezgoda, T. PB - WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES VL - Vol. 64 DA - 30.06.2018 T1 - FEM analysis of proppant sticking in rock cracks SP - 55 UR - http://www.journals.pan.pl/dlibra/publication/edition/115583 T2 - Archives of Civil Engineering ER -