Method and system for multi-frequency coupling disturbance hydraulic fracturing of hot dry rock

• Main Authors: BAI BING, ZOU YAN, CI HUILING, LEI HONGWU
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention belongs to the technical field of energy exploitation, geothermal energy exploitation and hydraulic fracturing, and particularly relates to a hot dry rock multi-frequency coupling disturbance hydraulic fracturing method and system. Through propagation, superposition and interference of a plurality of water hammer waves generated by a plurality of pressure sources, namely the coupling effect of the plurality of pressure sources, the gain effect of multi-frequency fracturing fluid pressure in hydraulic fracturing and strengthening of water hammer effect impact acting force is achieved, and the purpose of improving the hydraulic fracturing crack forming efficiency is achieved. Meanwhile, by monitoring various data of the underground fracturing fluid and the reservoir in real time, the process of hydraulic fracturing fracture forming of the reservoir is judged, and therefore reference is provided for dynamically adjusting a multi-frequency hydraulic fracturing strategy; the output fracturing wavefor