3D Reverse-Time Migration Imaging for Multiple Cross-Hole Research and Multiple Sensor Settings of Cross-Hole Seismic Exploration

被引:1
|
作者
Cheng, Fei [1 ]
Peng, Daicheng [2 ]
Yang, Sansheng [3 ]
机构
[1] China Univ Geosci, Hubei Key Lab Marine Geol Resources, Wuhan 430074, Peoples R China
[2] Yangtze Univ, Key Lab Explorat Technol Oil & Gas Resource, Minist Educ, Wuhan 430100, Peoples R China
[3] China State Shipbldg Corp, Res Inst 722, Wuhan 430205, Peoples R China
基金
中国国家自然科学基金;
关键词
three-dimensional imaging; cross-hole seismic exploration; reverse-time migration; multiple cross-holes; multiple sensor settings; TOMOGRAPHY; INVERSION;
D O I
10.3390/s24030815
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The two-dimensional (2D) cross-hole seismic computed tomography (CT) imaging acquisition method has the potential to characterize the target zone optimally compared to surface seismic surveys. It has wide applications in oil and gas exploration, engineering geology, etc. Limited to 2D hole velocity profiling, this method cannot acquire three-dimensional (3D) information on lateral geological structures outside the profile. Additionally, the sensor data received by cross-hole seismic exploration constitute responses from geological bodies in 3D space and are potentially affected by objects outside the well profiles, distorting the imaging results and geological interpretation. This paper proposes a 3D cross-hole acoustic wave reverse-time migration imaging method to capture 3D cross-hole geological structures using sensor settings in multi-cross-hole seismic research. Based on the analysis of resulting 3D cross-hole images under varying sensor settings, optimizing the observation system can aid in the cost-efficient obtainment of the 3D underground structure distribution. To verify this method's effectiveness on 3D cross-hole structure imaging, numerical simulations were conducted on four typical geological models regarding layers, local high-velocity zones, large dip angles, and faults. The results verify the model's superiority in providing more reliable and accurate 3D geological information for cross-hole seismic exploration, presenting a theoretical basis for processing and interpreting cross-hole data.
引用
收藏
页数:16
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