Gulf of Suez acquisition design using 2D and 3D full wave equation simulation

Jurick, Dana; Codd, Jeff; Hoxha, Fatmir; Naumenko, Julia V.; Kessler, David

doi:10.1190/1.1817760

Cited by 4 publications

(4 citation statements)

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“…To measure quantitatively image resolution of acquisition geometries, many approaches have been developed since the early 2000s, e.g. spatial resolution analysis (Vermeer, 1999; Gibson and Tzimeas, 2002; Huang and Schuster, 2014; Schuster et al ., 2017) based on the theory of Beylkin (1985), illumination analysis (Wu and Chen, 2006; Xie et al ., 2006; Cao and Wu, 2009; Yan and Xie, 2016) based on point spread functions and full sequences of modelling and migration (Jurich et al ., 2003; Regone, 2006). A more efficient way is the focal beam analysis (Berkhout et al ., 2001), which assesses the detector and source sampling separately based on common‐focus‐point migration (Berkhout, 1997).…”

Section: Introductionmentioning

confidence: 99%

Order‐controlled closed‐loop focal beams and resolution comparison of primary and multiple reflections for seismic acquisition geometries

Wei

Blacquière

2020

Geophysical Prospecting

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Focal beam analysis has built a bridge between the acquisition parameters on the surface and the image quality of underground targets. However, as a practical matter, it is still difficult to answer how to choose a proper acquisition geometry according to the complexity of medium, especially considering the contradictory effects of multiple reflections on spatial resolution as they can be considered to be either potential signal or additional noise, depending on the envisioned imaging technology. We introduce an order-controlled, closed-loop focal beam method in which the migration operator and the resolution function can be analysed in the process of the closed-loop migration with full control over the order of the surface and internal multiples considered. This method highlights the effects of primary and different-order multiple wavefields on the imaging resolution for different acquisition geometries and various overburden strata. We apply the method to analyse the predicted resolution of seismic acquisition geometries considering multiples as either noise or signal. Results show, in the acquisition geometry design, that when the primaries cannot provide a complete spatial illumination for the subsurface target, e.g. because of the limited-aperture acquisition geometries or the complicated overburden, we should use the closed-loop focal beam analysis to assess the contradictory effects of multiples as both signal and noise, in which the maximum order of multiples ought to be chosen according to the core aim of the acquisition analysis. We can apply the second-order closed-loop focal beam analysis to quantify the effects of acquisition geometries on multiple-wave suppression and can also perform the high-order closed-loop focal beam analysis to quantify the effects of acquisition geometries on high-resolution imaging (migration). This method can also be used to choose the optimal order of multiples in the closedloop migration.

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Section: Introductionmentioning

confidence: 99%

Order‐controlled closed‐loop focal beams and resolution comparison of primary and multiple reflections for seismic acquisition geometries

Wei

Blacquière

2020

Geophysical Prospecting

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“…With the increase in computational power, it has been possible to carry out the full sequence of 3D modelling and migration (Jurick et al . ; Regone ). However, fully simulating the seismic experiment and migrating the obtained synthetic seismic data is still a computationally intensive and laborious way to obtain direct measures for image quality at the target.…”

Section: Introductionmentioning

confidence: 99%

Extending illumination using all multiples: application to 3D acquisition geometry analysis

Kumar

Blacquière

Verschuur

2015

Geophysical Prospecting

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Recent advances in survey design have led to conventional common-midpoint-based analysis being replaced by subsurface-based seismic acquisition analysis, with emphasis on advanced techniques of illumination analysis. Among them is the so-called focal beam method, which is a wave-equation-based seismic illumination analysis method. The objective of the focal beam method is to provide a quantitative insight into the combined influence of acquisition geometry, overburden structure, and migration operators on the resolution and angle-dependent amplitude fidelity of the image. The method distinguishes between illumination and sensing capability of a particular acquisition geometry by computing the focal source beam and the focal detector beam, respectively. Sensing is related to the detection properties of a detector configuration, whereas illumination is related to the emission properties of a source configuration. The focal source beam analyses the incident wavefield at a specific subsurface grid point from all available sources, whereas the focal detector beam analyses the sensing wavefield reaching at the detector locations from the same subsurface grid point. In the past, this method could only address illumination by primary reflections. In this paper, we will extend the concept of the focal beam method to incorporate the illumination due to the surface and internal multiples. This in fact complies with the trend of including multiples in the imaging process. Multiple reflections can illuminate a target location from other angles compared with primary reflections, resulting in a higher resolution and an improved illumination. We demonstrate how an acquisition-related footprint can be corrected using both the surface and the internal multiples.

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“…Application of this method is demonstrated by Moldoveanu et al ͑2003͒ andBrink et al ͑2004͒. Because computational power is increasing, it is expected that methods based on the full sequence of 3D modeling and migration will gain interest ͑e.g., Jurick et al, 2003;Regone, 2006͒. Nevertheless, this sequence is currently too laborious to be used for an acquisition design procedure because that requires an iterative application.…”

Section: Introductionmentioning

confidence: 99%

Acquisition geometry analysis in complex 3D media

2008

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Increasingly, we must deal with complex subsurface structures in seismic exploration, often resulting in poor illumination and, therefore, poor image quality. Consequently, it is desirable to take into consideration the effects of wave propagation in the subsurface structure when designing an acquisition geometry. We developed a new, model-based implementation of the previously introduced focal-beam analysis method. The method's objective is to provide quantitative insight into the combined influence of acquisition geometry, overburden structure, and migration operators on image resolution and angle-dependent amplitude accuracy. This is achieved by simulation of migrated grid-point responses using focal beams. Note that the seismic response of any subsurface can be composed of a linear sum of grid-point responses. The focal beams have been chosen because any migration process represents double focusing. In addition, the focal source beam and focal detector beam relate migration quality to illumination properties of the source geometry and sensing properties of the detector geometry, respectively. Wave-equation modeling ensures that frequency-dependent effects in the seismic-frequency range are incorporated. We tested our method by application to a 3D salt model in the Gulf of Mexico. Investigation of well-sampled, all-azimuth, long-offset acquisition geometries revealed fundamental illumination and sensing limitations. Further results exposed the shortcomings of narrow-azimuth data acquisition. The method also demonstrates how acquisition-related amplitude errors affect seismic inversion results.

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Gulf of Suez acquisition design using 2D and 3D full wave equation simulation

Cited by 4 publications

References 0 publications

Order‐controlled closed‐loop focal beams and resolution comparison of primary and multiple reflections for seismic acquisition geometries

Order‐controlled closed‐loop focal beams and resolution comparison of primary and multiple reflections for seismic acquisition geometries

Extending illumination using all multiples: application to 3D acquisition geometry analysis

Acquisition geometry analysis in complex 3D media

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