Seismic multi-attribute approach using visual saliency for subtle fault visualization

Singh, Gagandeep; Mahadik, Rahul; Mohanty, William K.; Routray, Aurobinda; Datta, Deepan; Panda, Sanket Smarak

doi:10.1080/08123985.2022.2144722

Cited by 3 publications

(1 citation statement)

References 22 publications

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“…Even if traps exist, their actual hydrocarbon accumulation is influenced by factors such as hydrocarbon supply, migration, and preservation conditions [3][4][5]. Although the application of certain seismic hydrocarbon detection methods can assist in improving drilling success rates [6,7], there are limited successful examples of accurately predicting the presence of composite and lithological hydrocarbon reservoirs by considering factors such as faulted sandbody combinations, fault-sealing capacity, sandbody distribution, and hydrocarbon migration.…”

Section: Introductionmentioning

confidence: 99%

Controls of the Sandbody Scale and Fault Throw on the Lithology and Composite Reservoir Formation in the Baoyunting Slope, East China Sea

Yan,

Zhou,

et al. 2023

Energies

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Under the conditions of many faults, sandbodies, and hydrocarbon sources on the slopes of faulted basins where structural traps are scarce, only a few sandbodies are capable of forming hydrocarbon pools, while most sandbodies act as aquifers. This situation presents a challenge for predicting favorable hydrocarbon accumulation areas and understanding controlling factors. The Pinghu Formation reservoirs in the Baoyunting nose structure of the Xihu Sag in the East China Sea exemplify this characteristic. Among the 19 small-scale oil and gas reservoirs discovered in this area, 10 are faulted sandbody composite traps and 9 are lithological traps, while the majority of the remaining sand layers, especially the thick layers, act as aquifers, resulting in significantly lower accumulation probabilities compared to the adjacent northern and southern areas. We analyzed the relationship between the sandstone thickness and the amplitude through the 1-D forward modeling of wells and dissected the 3-D seismic event to obtain the planar distribution of a single sandbody. Further comprehensive research on fault sealing and kinetic reservoir formation processes suggests that the gas pool formation in this area is closely related to fault sealing and lateral oil and gas transport. A small fault-to-caprock ratio is beneficial for the sealing of mudstone caprocks, while a large fault-to-sand thickness ratio is beneficial for the lateral sealing of faults and the formation of fault–sand composite pools. The tidal microfacies sandbody has a small scale, poor lateral transport ability, and a low probability of gas reservoir formation. The barrier and delta front sandbodies have a large scale, good lateral transport, and a high probability of reservoir formation. Based on the above methods, favorable pool formation traps were identified in the area, and high-yield gas wells were drilled.

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Section: Introductionmentioning

confidence: 99%

Controls of the Sandbody Scale and Fault Throw on the Lithology and Composite Reservoir Formation in the Baoyunting Slope, East China Sea

Yan,

Zhou,

et al. 2023

Energies

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Unveiling the Subsurface Faults in Indian Krishna Godavari Basin: A Domain Adaptation Approach

Ghosh,

Parappan,

Jenamani

et al. 2024

IEEE Trans. Geosci. Remote Sensing

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Hydrocarbon Potential Assessment Methods in Complex Fault Zones: A Case Study of the Southern Pinghu Structural Belt, East China Sea

Jiang,

Yan,

et al. 2024

Energies

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Frequent tectonic activity in rift basins has led to complex fault zones, which have led to extensive hydrocarbon distributions and tremendous resource potential. This study investigated the hydrocarbon potential in the southern Pinghu structural belt, focusing on fault traps in complex fault zones. Through fault sealing analysis and gas detection attenuation methods, this study aims to improve exploration success rates. The application outcomes demonstrate that the Shale Gouge Ratio (SGR) threshold for achieving the lateral sealing of faults in the southern Pinghu structural belt is 34%, with a critical fault throw of 100 m. Regions where the fault’s lateral sealing zone corresponds with areas exhibiting anomalous gas responses are deemed promising for hydrocarbon accumulation. Additional analysis indicates that favorable fault trap development occurs along the foot walls of significant faults, particularly in the eastern sector of the study area. The findings are corroborated by actual drilling data, affirming the efficacy of these methods in pinpointing hydrocarbon traps within complex fault zones and offering valuable insights for their broader global application.

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Seismic multi-attribute approach using visual saliency for subtle fault visualization

Cited by 3 publications

References 22 publications

Controls of the Sandbody Scale and Fault Throw on the Lithology and Composite Reservoir Formation in the Baoyunting Slope, East China Sea

Controls of the Sandbody Scale and Fault Throw on the Lithology and Composite Reservoir Formation in the Baoyunting Slope, East China Sea

Unveiling the Subsurface Faults in Indian Krishna Godavari Basin: A Domain Adaptation Approach

Hydrocarbon Potential Assessment Methods in Complex Fault Zones: A Case Study of the Southern Pinghu Structural Belt, East China Sea

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