Environmental Geophysics

Eppelbaum, Lev

doi:10.1016/b978-0-12-811685-2.00011-4

Cited by 20 publications

(7 citation statements)

References 54 publications

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“…In this paper, based on aeromagnetic and gravity data, combined with the determination and analysis of stratigraphic density and magnetization rate parameters, different geophysical methods [31] are combined with seismic and drilling data as constraints, among which, the anomaly stripping method and Parker's iteration method are used for the depth of the Mesozoic bottom surface; the wavelet decomposition method is used for the regional gravity anomaly caused by the deep (mainly Moho surface) [32][33][34][35][36][37]; the calculated depth data are corrected with known drilling and seismic data as constraint control in the calculation process, and the thickness of the Upper Paleozoic and the depth of the Jurassic-Cretaceous bottom surface are obtained, respectively.…”

Section: Constructing Layering Methodsmentioning

confidence: 99%

Estimating Perspectives of Oil and Gas in New Strata in the Southern and Surrounding Dayangshu Basin

Liu

Lai

et al. 2023

Minerals

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On the basis of elaborating on the regional geological background, this paper analyzes the lithological and sedimentary characteristics and explorative prospects of new strata with oil and gas in the southern and surrounding areas of Dayangshu Basin. Based on the latest high-precision airborne gravity and magnetic comprehensive survey data, combined with the latest data from geological explorations, physical surveys, and drilling, and the use of basin structure layering combination methods, we clarified the characteristics of the bottom of the Jurassic–Cretaceous and the occurrence characteristics of the Upper Paleozoic in the study area and revealed the determinative effect of multi-period structures on the most important sedimentary layers. Then, we summarized the accumulation conditions and prediction methods of hydrocarbons and proposed the oil and gas prospects of these deep new strata. The results show that the Liuhe Sag in Dayangshu Basin, the depression in the northeast of Longjiang Basin, and the northern parts of the Taikang swell have good source–reservoir–cap combination conditions and favorable structural characteristics for oil and gas, where there is a high potential for exploration.

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Section: Constructing Layering Methodsmentioning

confidence: 99%

Estimating Perspectives of Oil and Gas in New Strata in the Southern and Surrounding Dayangshu Basin

Liu

Lai

et al. 2023

Minerals

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“…The gravitational data is measured by the appropriate filter method, and the residual maps are correctly interpreted. In that case, the results will provide helpful information for identifying the structural status of the oil traps (Adeyemo et al, 2022;Doulati Ardejani et al, 2011;Eppelbaum, 2019;Eshagh, 2021;Hosseini et al, 2013;Hosseini et al, 2014;Ojo et al, 2021;Sarma & Selvaraj, 1990). In potential field methods, there are three stages conception, processing, and interpretation, the most important of which is the interpretation of the results.…”

Section: Introductionmentioning

confidence: 99%

Boundaries Determination in Potential Field Anomaly Utilizing Analytical Signal Filtering and its Vertical Derivative in Qeshm Island SE Iran

Hosseini

Khah²,

Kianoush

et al. 2023

Preprint

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The analytical signal method and its derivatives can be explicitly calculated and assessed for analyzing and estimating the boundary of geological structures, such as faults or dikes, from potential field anomalies. Gravity field of the east of Qeshm Island and its north coast from Sarkhun to Latidan in SE Iran has been measured in one-kilometer regular network. The regional anomaly effects are deducted from the Bouguer anomaly, where it can get the residual anomalies which is the considered dataset used in this study. The Bouguer range is -297 to -330 milligals (mGal) applying filters and modeling. It was revealed that there are five negative anomalies caused by salt penetration in the region. Regional anomalies expectedly have a low spatial frequency and long wavelengths, while the residual anomalies associated with shallow sub-surface potentials have high spatial frequencies and short-wave wavelengths. Two different fault trends were observed comparing the artificial model using MATLAB coding, the real one, and the filtered residual anomaly map of the Qeshm region. Also, another fault trend is suggested in the east height of Oman, which is a possible place of salt penetration. Due to the limited dimensions (120 * 100 km) and the information obtained from the existing drillings, the depth of the anomaly resources can be examined up to 8 km. Due to the gravitational condition between the two domes of Qeshm saline and the bridge located in the Hara saline area, it is suggested to be considered as an area for further oil exploration routines.

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“…In most discovery tasks, describing and modeling are done for the residual field. When employing the filter with different intensities to highlight the main structures of anomalies, it needed a clear and good map that can create a relative balance between the existing noise and signals (Cooper, 2004;Cooper & Cowan, 2006b, 2008Eppelbaum, 2019;Hidalgo-Gato & Barbosa, 2015;Pilkington & Keating, 2009;Telford et al, 1990). The frequency domain filter is first used for detecting the false and real anomalies and then used for detecting the spread and deep of the anomalies (Jacobsen, 1987).…”

Section: Introductionmentioning

confidence: 99%

Tilt Angle Filter Effect on Noise Cancelation and Structural Edges Detection in Hydrocarbon Sources in a Gravitational Potential Field

Hosseini

Khah²,

Kianoush

et al. 2023

Preprint

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Noise cancelation is the process done to remove out-of-range anomalies and make better edge boundaries interpretation. One of the most challenging issues in describing gravitational maps is separating the anomalies related to shallow sources from the deep ones. Furthermore, Existing noise can make it arduous to separate shallow blurred boundaries. In this study in SE Iran, gravitational surveying was carried out in shallow areas from the west of Qeshm to the Hormuz islands in a regular network with a distance of one kilometer. The range of gravitational Bouguer was -297 to -330 mGal. Modeling and determining geometrical parameters revealed five negative anomalies from salt penetration. The residual gravity was computed by deducting gravitational effects related to deep sources from measured gravitational data. The hyperbolic tangent function was preferred by comparing the results and employing the tilt angle filter on different gravitational field maps using numerical coding. Correspondingly, estimating the boundary and edge of the subsurface masses will be better than local filters, and anomalies will be highlighted with more intensity. Furthermore, three major fault systems in the Zagros basin were determined as the primary origin of activity and expansion of Hormuz salt. Sensitivity analysis was employed utilizing analytical signals and maps of tilt angle filtering, which both revealed the same satisfying results of -297 to -330 mGal. In this article, the effect of the tilt angle local phase filter on a synthetic model was accomplished through numerical coding. Then the results were analyzed on the gravity data.

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Environmental Geophysics

Cited by 20 publications

References 54 publications

Estimating Perspectives of Oil and Gas in New Strata in the Southern and Surrounding Dayangshu Basin

Estimating Perspectives of Oil and Gas in New Strata in the Southern and Surrounding Dayangshu Basin

Boundaries Determination in Potential Field Anomaly Utilizing Analytical Signal Filtering and its Vertical Derivative in Qeshm Island SE Iran

Tilt Angle Filter Effect on Noise Cancelation and Structural Edges Detection in Hydrocarbon Sources in a Gravitational Potential Field

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