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Application of 3D Continous Coverage Processing and Pre-stack Migration Technolage in JILIN Exploration Area

Author: HouShanHong
Tutor: SongWenLing；WangJiaHai
School: Northeast University of Petroleum
Course: Petroleum and Natural Gas
Keywords: 3D merging processing Prestack migration Static correction Bin equalization Consistency Processing Migration velocity field
CLC: P631.44
Type: Master's thesis
Year: 2011
Downloads: 17
Quote: 0
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Abstract


Three-dimensional contiguous prestack migration processing is the multi- block three - dimensional seismic data collected by the different periods in the region to re - merging processing , eliminating the differences between each block of the old data acquisition factors , energy , frequency , amplitude , and in this carried out on the basis of pre-stack migration processing . Focused on the southern Songliao Basin QZJ QAB QXB 3D block of contiguous prestack migration processing technology research , the purpose is to establish a set of three-dimensional contiguous prestack processing process has been completed for the southern Songliao Basin over 7000 square kilometers to provide the technical basis for high-precision 3D seismic data merging processing . The main contents of this paper include contiguous Processing Method and prestack migration studies two aspects . The main purpose of the joint processing is to solve the acquisition factors , energy , frequency , amplitude differences between each block so consistent for prestack migration prestack data quality , specific content , including surface $ unification and homogenization techniques , surface the consistency processing technology (including the amplitude consistency processing technology and frequency , phase coherence processing technology ) , static correction, prestack improve the signal-to-noise ratio technology ; prestack migration research offset parameters (including pore size and speed, etc.) of the selection method , and offset the establishment method of the velocity field . Block processing caused by the boundary effect can be eliminated through the use of three-dimensional lace prestack migration processing technology , allows to reach an agreement between the blocks amplitude , frequency , phase , three-dimensional data re- processing the quality of the original block processing compared to the data significantly improved , merging processing is applied to achieve an acquisition in the interpretation and geological evaluation of the effect of easy to conduct an overall evaluation , the lithology prediction as well as the overall speed , but also conducive to more fully play oilfields existing the potential of three-dimensional data to lower exploration costs , and evaluation of oil and gas exploration and resource development is of great significance .

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