Kirchhoff Prestack Depth Migration of 3D VSP Data in Offset and Angle Domains

Hu, Lingli

doi:10.3997/2214-4609.20142576

Cited by 1 publication

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“…Many efforts in data acquisition and processing have been done to improve current 3D VSP imaging techniques, such as dual-well 3D VSP acquisition (Tøndel et al 2013), Distributed Acoustic Sensing (DAS) acquisitions (e.g., Mestayer et al 2011;Madsen et al 2013;Mateeva et al 2013), efficient wave-field separation method (Palacios, Planchart and Jiao 2013), amplitude scaling for migration (Lou et al 2013) and migrating 3D VSP data in the offset and angle domains (Hu 2013). In this study, we will focus on a fundamental problem related to the seismic velocity model used for 3D seismic and 3D VSP imaging.…”

Section: Introductionmentioning

confidence: 99%

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Borehole seismic quantitative diagnosis of a seismic velocity model for 3D seismic imaging of subsurface structures

Hewett

2014

Geophysical Prospecting

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Quantifying uncertainties of surface seismic velocity models is a difficult task. The use of multifarious vertical seismic profiling data provides quantification of velocity model uncertainties. Two borehole seismic diagnosis methods for velocity model uncertainties are developed. The first method is performed with 3D ray‐traced first arrival times through a surface seismic velocity model and compared with measured first arrival times from downhole receivers. It generates a profile of absolute and relative misfits, indicating the velocity uncertainty as a function of depth. The second approach directly compares the differences between the first arrival incident angles measured from 3‐C borehole seismic data and the calculated first arrival incident angles of seismic rays through the velocity model to quantify the model uncertainties. Five seismic velocity models in the Gulf of Mexico are diagnosed using the diagnosis methods with up to six sets of borehole seismic data recorded in three wells. The uncertainty profiles vary with depths and azimuths, revealing the complexity of velocity model uncertainties and providing some clues for further velocity updating. The diagnosis methods are used as velocity updating QC tools and integrated with the conventional seismic velocity updating flow to complement the criteria of flat common image gathers.

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Section: Introductionmentioning

confidence: 99%

“…), efficient wave‐field separation method (Palacios, Planchart and Jiao ), amplitude scaling for migration (Lou et al . ) and migrating 3D VSP data in the offset and angle domains (Hu ). In this study, we will focus on a fundamental problem related to the seismic velocity model used for 3D seismic and 3D VSP imaging.…”

Section: Introductionmentioning

confidence: 99%

Borehole seismic quantitative diagnosis of a seismic velocity model for 3D seismic imaging of subsurface structures

Hewett

2014

Geophysical Prospecting

View full text Add to dashboard Cite

show abstract

Kirchhoff Prestack Depth Migration of 3D VSP Data in Offset and Angle Domains

Cited by 1 publication

References 0 publications

Borehole seismic quantitative diagnosis of a seismic velocity model for 3D seismic imaging of subsurface structures

Borehole seismic quantitative diagnosis of a seismic velocity model for 3D seismic imaging of subsurface structures

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