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High Precision Secondary Positioning Method Based on First-break Wave’s Research and Software Development

Author: XuZuo
Tutor: ZhuLianZhang
School: China University of Petroleum
Course: Computer technology
Keywords: Positioning accuracy Relocation of detection points Automatic positioning Early to automatic pickup Shallow waters
CLC: P631.4
Type: Master's thesis
Year: 2010
Downloads: 59
Quote: 0
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Abstract


Shallow-water oil and gas seismic data acquisition process , the detector by surrounding the environmental impact caused by the physical location of the offset , base shock wave propagation of underground CMP (CMP) coordinates determined jointly by the shot and receiver points position . Receiver point position inaccuracy caused by CMP wrong coordinates , so the CMP bin superposition disorder ; will also lead to the receiving point offset errors caused by the the receiver jog correction errors affect the accuracy of seismic data superimposed . To this end, the State 863 Project \, which the main results of this thesis is as follows : 1 . the traditional detector secondary positioning software based on the principle of the method , the in-depth study of the shallow waters of the three-dimensional detection point automatically re- positioning technology to correct for detector drift caused by the deviation . Actual data problems than the law of energy algorithm improvements , and the use of precision optimization technology research to improve pickup accuracy . Comprehensive study of the methods and techniques of the re- positioning of the detection points in three-dimensional space , the three-dimensional mathematical model of the detector point positioning ; corresponding key technology solutions and measures , focusing on how to reduce the accumulated error in the positioning process . improve the accuracy of the calculation of the detection point position . Integrated early to pick up and positioning algorithms and the corresponding precision control algorithms and development of algorithm - related graphics display capabilities ; 5. Seismic data of the two work area functional and performance testing , the results show that : research correct and improve the functionality of the software development , high precision , fast inversion process automation .

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CLC: > Astronomy,Earth Sciences > Geology > Geology, mineral prospecting and exploration > Geophysical exploration > Seismic exploration
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