Parametric method of compensation for near-surface heterogeneity in processing CDP data

Sysoev, A.P.; Gorelik, G.D.

doi:10.1016/j.rgg.2016.07.006

Cited by 3 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the magnitude of the anomaly for the three-dimensional model is smaller than for the two-dimensional, it can be seen that in any case the axial setup is more sensitive to resistivity variations than the equatorial one, and, therefore, should be used primarily during field works. Data of a good signal-to-noise ratio were obtained as a result of seismic modeling [9], highlighting the target research objects: reflections from the Bazhenov formation layer, -fault‖ zone, an anomaly in the Bazhenov formation, reflections from the basement (Figures 6 and 7).…”

Section: The Results Of the Electromagnetic And Seismic Modelingmentioning

confidence: 95%

Physical modeling of the Bazhenov formation in combination with CSEM and seismic methods

2021

Self Cite

View full text Add to dashboard Cite

To predict the properties of the Bazhenov formation and to identify the areas in which oil deposits are localized the use of electrical prospecting methods is promising. The main goal of the current research is to evaluate the effectiveness of using Controlled Source Electro Magnetics (CSEM) exploration for the area forecast of the properties of the Bazhenov formation. The main objectives of physical modeling in this research are: Creation of an isotropic physical model corresponding to the electrical and elastic parameters of the section of the studied area, and performing 3D modeling on it with survey parameters that reproduce real seismic and CSEM surveys To convince that the contrast of the elastic properties and the ratio of the resistivity of the target interval of the Bazhenov formation and overlying rocks in the created physical model corresponds to the real petrophysical characteristics of the section of the studied area; Obtaining initial data for testing algorithms for synchronous inversion of seismic + electric and testing various approaches to processing and interpretation of CSEM and 3D seismic data.

show abstract

Section: The Results Of the Electromagnetic And Seismic Modelingmentioning

confidence: 95%

Physical modeling of the Bazhenov formation in combination with CSEM and seismic methods

2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…The methods of analysis in geophysics are closely connected to the vital task of inspection of underground pipelines and tunnels [14,39,[46][47][48]. Also, for some types of rocks and minerals that may be located at great depth, where the seismic responses do not represent explicitly the physical objects, for additional verification the methods of non-destructive evaluation [48] may be effective anomalies measured at a distance from the damaged section of the structure with the disturbed section shows that the magnetometer used in the procedure registers the disturbances, but not directly from the defective pipeline itself.…”

Section: Non-destructive Evaluationmentioning

confidence: 99%

“…Also, for some types of rocks and minerals that may be located at great depth, where the seismic responses do not represent explicitly the physical objects, for additional verification the methods of non-destructive evaluation [48] may be effective anomalies measured at a distance from the damaged section of the structure with the disturbed section shows that the magnetometer used in the procedure registers the disturbances, but not directly from the defective pipeline itself. The linear dimensions of the magnetic anomaly are several orders of magnitude larger than the linear dimensions of the defects themselves, which suggests that secondary processes may occur [47,48]. Such processes may include electrochemical effects due to contact of the conductive surface with an aggressive ion-conducting rock system or soil; accumulated elastic-plastic deformations in the body of the pipe; macroscopic scattering of the signal on a cluster of small defects.…”

Section: Non-destructive Evaluationmentioning

confidence: 99%

“…The result representing a vertical section uses a semitone form of visualization of scalar field Ω, adequately displaying both the surfaces of the layers of stratification and discontinuities associated with tectonic contacts. The transition from one structural–material complex to another is often associated with a jump in the average wavelength of the structural surface [45–47] (figure 3).

Figure 3The sample of vertical parametric cross-section reconstructed on the base of recomputing the digital model of the Earth relief in the volume of geological environment.…”

Section: Modelling Of Wave-like Processes In Geophysicsmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic response of multi-scale geophysical systems: waves and practical applications

Yakovleva

Movchan

Shaygallyamova

2022

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

In this review paper, we discuss the nature of an apparent link between heterogeneities associated with geological anomalies hidden from direct observation, detected when they are analysed remotely from various distances—including borehole conditions as well as aero imaging. Here, the main emphasis is placed on geological and geophysical features represented by spatially distributed signals measured along drilled well or along predefined spatial routes. In the common practice of indirect measurements of parameters of seismically active regions, there exist certain observations on correlations in the vicinity of structural and geological anomalies, repeated patterns in the representation of correlation functions and corresponding classification in multidimensional statistical methods. Underlying natural physical processes, which determine the structure of the primary anomalous environment, are of interest. Physical analogies, based on the mathematical modelling and generalization of empirical data, may suggest that such a process may be linked to wave phenomena on a geological scale. Applications include analysis of anomalies associated with non-potential fields, mapping of geodynamic zones and seismic microzoning; reconstruction of the geostructural vertical section of the mountainous regions. This article is part of the theme issue 'Wave generation and transmission in multi-scale complex media and structured metamaterials (part 2)'.

show abstract

Effective velocities artifacts caused by floating datum and compensation methods

Novokreschin¹,

Rakivnenko²,

Ignatieva³

et al. 2021

Izvestiâ vysših učebnyh zavedenij. Neftʹ i gaz

View full text Add to dashboard Cite

Seismic data processing from a floating datum is accompanied by difficulties in estimating effective velocities. These difficulties are associated with the roughness of the datum surface, which, if ignored, leads to artifacts in the estimated effective velocities. The study presents the results of a quantitative analysis of the distortion of effective velocities with model data, as well as the technique to minimize the distorting effect of the elevation on effective velocities. The essence of the method is bringing the sources and receivers within one CDP to a local constant level. This approach has been tested on modeled and real data. It showed a significant reduction in the effect of floating level roughness on kinematic parameters. At the same time, there is no need to modify the processing flow whatsoever.

show abstract

Parametric method of compensation for near-surface heterogeneity in processing CDP data

Cited by 3 publications

References 3 publications

Physical modeling of the Bazhenov formation in combination with CSEM and seismic methods

Physical modeling of the Bazhenov formation in combination with CSEM and seismic methods

Dynamic response of multi-scale geophysical systems: waves and practical applications

Effective velocities artifacts caused by floating datum and compensation methods

Contact Info

Product

Resources

About