Open AccessMeasuring system to investigate geo- and gas-dynamic processes in hydraulic fracturing of coal seams
Author(s) -
A. N. Drobchik
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/773/1/012008
Subject(s) - borehole , hydraulic fracturing , coal mining , geology , coal , petroleum engineering , geotechnical engineering , flow (mathematics) , engineering , mechanics , physics , waste management
A measuring system has been developed for a test bench allowing the study of gas-dynamic processes in large-sized rock samples when performing hydraulic fracturing of a coal seam in a borehole model. This system provides collection of the data on pressure in a hydraulic fracturing device and loading of pneumatic jacks which create compressive stresses in the borehole zone, it also records acoustic emission during crack formation. An additional capability is implemented to measure the flow rate of gas supplied to sample through the holes on its side wall and pumped from the borehole.