basalt layer seismic processing

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The analysis of deep-layer reflection seismic signal energy shows that low-frequency seismic signals are capable of both penetrating the thin high-velocity basalt layer and

Uses of wideazimuth and variabledepth streamers for

2015-8-7 · streamers for subbasalt seismic imaging To evaluate the optimal technique for imaging beneath a complex basalt layer, Robert Dowle,1* Fabrice Mandroux,1 Robert Soubaras,1 and Gareth Williams2 compare dense wide-azimuth and broadband towed streamer acquisition solutions when deployed in an experimental survey in the Faroe-Shetland Basin. A

Modern Sub-Basalt Seismic Imaging Deepwater Realm

2012-4-3 · Modern Sub-Basalt Seismic Imaging Figure 4: Successive cross-lines undertaken on the 3D over-under survey in the west-coast off India display numerous features under basalt such as the sag basin, fractures, faults and folding. K-T boundary layer is

Study on the limitations of travel-time inversion applied

2016-1-22 · Study on the limitations of travel-time inversion applied to sub-basalt imaging I. Flecha1, beneath a high velocity basalt layer can be resolved by using travel times alone. This manuscript is not aimed to present an ment in the seismic image below top basalt. Increasing the source energy at low frequencies by: towing the source and

() Advanced processing of long-offset seismic

Advanced processing of long-offset seismic data for sub-basalt imaging in the Faeroe-Shetland Basin Hassan Masoomzadeh* and Penny J. Barton, University of Cambridge, Satish C. Singh, IPG Paris Summary the linear noise of ringing and multiplication, arrive tangentially at about the time of the reflection signal from A specialized strategy for long-offset data processing is the sub-basalt targets.

Multifocusing Seismic Processing to Improve Poor

Author: D. Curia, P. C. H. Veeken, J. Zunino, K. Deev, D. Pelman

Seismic properties of layer 2 basalts researchgate

Seismic properties of layer 2 basalts Daley et al., 2004], but seismic monitoring in basalt environments is more effectively used and behavior is more clearly linked to processing. A

Modern Sub-Basalt Seismic Imaging Deepwater Realm

2012-4-3 · Modern Sub-Basalt Seismic Imaging Figure 4: Successive cross-lines undertaken on the 3D over-under survey in the west-coast off India display numerous features under basalt such as the sag basin, fractures, faults and folding. K-T boundary layer is

Reinterpretation of the "J" Basalt Reflector from Seismic

2012-3-30 · Reinterpretation of the "J" Basalt Reflector from Seismic Data Reprocessing Across the Coastal Plain of Southeastern Georgia: Potential Implications for Long-Term CO 2 Sequestration* Olusoga Martins Akintunde1, Camelia Knapp2, James H. Knapp2, David M. Heffner2, and John Shafer3. Search and Discovery Article #80174 (2011) Posted July 31, 2011

Determining the Basaltic Sequence Using Seismic

2013-12-24 · The first layer is a thin layer of very dry weathered basalt, with an average value of = 8430 Ohm.m, and at a depth ranging from 1 to 7.5 m. The value of apparent resistivity in the second layer is about > 4000 Ohm.m and at depth ranging from 7.5 to 20 m, which might be com-prised of fresh basalt. The third layer has an apparent

Study and materialization of new seismic physical model

Building of physical model is the foundation of seismic physical modeling.The key to physical model building is to determine the compound formulation that can produce

Sub-basalt Imaging Using Broadside CSEM emgs

2011-6-6 · below a basalt layer. However, due to shape irregularities and het erogeneities with high velocity contrasts around and within the basalts, it can be challenging for seismic processing to image the base of the basaltic layer and details of what is below . [For example, s ee Fliedner and White (2001) ].

Sub-basalt imaging in the Faroe-Shetland Basin using

2014-12-5 · of the basalt layer as well as sub-basalt strata have been pub-lished. For instance Fruehn et al. (2001) and White et al. (2003) used long offset rst arrivals for travel-time tomogra-phy in order to determine the sub-basalt velocities. However, the resulting velocity

Reinterpretation of the "J" Basalt Reflector from Seismic

2012-3-30 · Reinterpretation of the "J" Basalt Reflector from Seismic Data Reprocessing Across the Coastal Plain of Southeastern Georgia: Potential Implications for Long-Term CO 2 Sequestration* Olusoga Martins Akintunde1, Camelia Knapp2, James H. Knapp2, David M. Heffner2, and John Shafer3. Search and Discovery Article #80174 (2011) Posted July 31, 2011

Integrated seismic and electromagnetic model building

2019-5-20 · Integrated seismic and electromagnetic model building applied to improve subbasalt depth imaging hanced seismic data acquisition and processing or from other basalt layer, as well as the sediment and basement structures underneath.

Sub-basalt seismic imaging using optical-to-acoustic

Sub-basalt seismic imaging using optical-to-acoustic model building and wave equation datuming processing. Author links open overlay The same procedure was applied to the Ulster White Limestone Formation underlying the basalt layer, where two populations of velocities were identified in a similar manner from both the optical image and the

The effect of intra-trappean heterogeneities on

The near normal incidence data, which influence the sub-basalt imaging, are highly useful to understand the internal structure within a basalt layer. The use of converted waves for such targets has been proposed as an alternative in a rather homogeneous basalt layer.

Seismic Research Papers Academia.edu

Imaging below the basalt for hydrocarbon exploration is a global problem because of poor penetration and significant loss of seismic energy due to scattering, attenuation, absorption and mode-conversion when the seismic waves encounter a highly heterogeneous and rugose basalt layer.

SUB-BASALT IMAGING: MODELING AND DEMULTIPLE

2017-10-14 · Seismic imaging of sub-basalt sedimentary layers is difficult due to high impedance of the basalt layer, the roughness of the top and bottom of the basalt layer and sometimes the heterogeneities within the basalt layer. In this thesis we identify specific problems within the modern imaging technology which limit sub-basalt imaging. The basic

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basalt layer seismic processing hospetsteels

SUB-BASALT IMAGING USING WALKAWAY VSP DATA demonstrate how wave mode dependent data pre-processing, velocity analysis and The interpretation of seismic data acquired in basalt-covered areas is often elastic properties of these layers at a variety of scales (Planke et al., 1999).

Study and materialization of new seismic physical model

Building of physical model is the foundation of seismic physical modeling.The key to physical model building is to determine the compound formulation that can produce

CN103924580B Basalt reinforced method using Google

Basalt use of reinforced method, in conjunction with the drilling of the first to investigate regional distribution of basalt seismic wave method, and then processed, distributed

Seeing below the basalt offshore Faroes Gallagher

This thick basalt layer obscures the deeper potentially prospective sedimentary section. This is one of the most important aspects of subbasalt seismic processing. Velocity picks must take into account the geological model and be guided by the seismic interpreter. Top basalt is an obvious seismic pick and further picks should be based on

Seismic imaging difficulty holding back Irish Atlantic

2018-8-1 · Sub-basalt imaging is often poor quality with the seismic data collected offering little information beneath the so-called "masking layer." Standard acquisition and bulk data processing parameters seem to do little to alleviate the problem. Detailed examination of each individual basalt