Application of Electromagnetic Monitoring in Hydraulic Fracturing of Large Depth Shale Gas in Luzhou Area,Sichuan Province
Hydraulic fracturing increases the reservoir permeability and has greatly improved the productivity of low permeability oil and gas reservoirs through reservoir reconstruction,but the evaluation of fracturing effect is a key to the productivity improvement.Sensitive to the change of underground low resistance bodies,electromagnetic method plays an important role in assessing the extent of fracturing fluids and fracture morphology,thus has a wide ap-plication prospect in hydraulic fracturing monitoring.However,it is rarely applied in hy-draulic fracturing monitoring of large depth shale gas in southern Sichuan.In order to pro-mote the wider application of electromagnetic monitoring technology,this paper illustrates the monitoring effect of electromagnetic monitoring technology combined with examples.Based on the electromagnetic monitoring theory,this paper conducts numerical simulation experiments by simplifying the fracturing model,analyzes the fracturing monitoring effect combining the field test with the data processing flow of electromagnetic monitoring technol-ogy from many aspects such as the spread range of fracturing fluid,the strength of used flu-id,the strength of sand addition,and the area of repeated reconstruction,among which,the fracturing monitoring segments totals 13,and the spread area of each segment ranges from 4 700 to 24 042 m2,the spread width ranges from 36 to 182 m,and the average spread length is 207 m.The results show that,electromagnetic monitoring technology can detect the spread range and distribution pattern of fracturing in real time,which has some guiding sig-nificance for the evaluation of fracturing effect and the optimization of construction parame-ters.
NETL
NSTL
万方数据
维普
