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Make good use of the results from holographic electromagnetic methods to serve the old shale gas well areas.
The holographic electromagnetic method exploration project conducted by the Institute of Geophysical Exploration on the Lu 203H8 platform has achieved the first-ever application of holographic electromagnetic methods for the accurate localization and detailed exploration of fractures and the spatial distribution of fracturing fluids in shale gas horizontal wells following hydraulic fracturing, yielding significant scientific research results.
The holographic electromagnetic method is a new three-dimensional electromagnetic exploration technique capable of providing high-resolution imaging of fractures and the spatial distribution of fracturing fluids in horizontal wells after hydraulic fracturing. It offers effective technical support for evaluating the effectiveness of shale gas reservoir stimulation and identifying remaining recoverable zones. After years of theoretical research, instrument development, experimental validation, and engineering applications, this method has evolved into a comprehensive technological and equipment system.
The Lu 203H8 platform holographic electromagnetic exploration project marks an important milestone in the transformation of the Institute of Geophysical Exploration’s holographic electromagnetic technology—from laboratory research to practical application. Facing multiple challenges and difficulties—including complex terrain and landforms, high-density anthropogenic interference, and stringent environmental protection requirements—the project team overcame technical hurdles in various stages, such as instrument and equipment transportation, deployment, and debugging, thereby ensuring both the quality and efficiency of field data acquisition. After a month of intensive fieldwork—during which the team even forwent the National Day and Mid-Autumn Festival holidays—the project team successfully completed all field operations with high quality and efficiency. The project mobilized more than 40 professional technicians, 15 engineering vehicles, and 130 sets of advanced holographic electromagnetic instruments and equipment.
By rapidly processing and interpreting field data, we obtained three-dimensional imaging results depicting the spatial distribution of fractures and fracturing fluid after hydraulic fracturing in horizontal wells. These results were then compared and analyzed with geological data, well-log data, and production data, thereby validating the superiority and effectiveness of the holographic electromagnetic method in accurately locating and precisely exploring the spatial distribution of fractures and fracturing fluid following hydraulic fracturing in shale gas horizontal wells. Based on the imaging results, the project team conducted a detailed analysis of the distribution characteristics of fractures and fracturing fluid after hydraulic fracturing in the Lu203H8-2 and Lu203H8-4 horizontal wells, evaluated the reservoir modification effects and resource utilization status, and provided a scientific basis for further optimizing development technical policies and fracturing process parameters.
The geophysical exploration institute’s holographic electromagnetic method production project serves as a prime example of the institute’s technological innovation and application transformation, showcasing its technical strength and service capabilities in the field of shale gas exploration. This project not only provides new technological approaches and solutions for shale gas development but also lays a solid foundation for the promotion and application of the institute’s holographic electromagnetic method technology in areas such as solid mineral resources and geothermal energy.
Executive Producer | Zhang Guangda
Reviewed by | Zou Zhongping
Editor-in-charge | Zhou Huiying
Text | Liu Lei
Figure | Li Shengliang
Editor | Wen Han
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Email: sczywty@163.com
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