Application of finite difference eikonal solver for traveltime computation in forward modeling and migration

Amir Mustaqim Majdi, Seyed Yaser Moussavi Alashloo, Nik Nur Anis Amalina Nik Mohd Hassan, Abdul Rahim Md Arshad, Abdul Halim Abdul Latiff

Geological Society of Malaysia (GSM)

... taken is recorded. In addition, traveltime is directly proportional to the depth. The deeper subsurface layer causes the wave to take a longer time...

Confirming Reservoir Geometry and Exploration Opportunity through 5D Interpolation PSDM in The Sub-ophiolite Zone, Banggai Sula Basin, Central Sulawesi

Mufied Ahmad, Dadang Ramdan, Yudi Herdiana, Abdullah Nurhasan, Arif Budi Mulyawan

Indonesian Petroleum Association

... in the actual amount of the discovered gas resources. The previous geological model was based on 3D PreStack Depth Migrated seismic data from 2018. With only one...

Observations from Exploration Drilling in an Active Mud Volcano in the Southern Basin of Trinidad, West Indies

Maria Henry, Michael Pentilla, Darrell Hoyer

AAPG Special Volumes

... zone in the exposed Cruse Formation, with a layer of interbedded mudflow material adjacent to the fault (Figure 6A). Farther west along the beach...

Three-Dimensional Seismic Analysis in the Characterization of a Giant Carbonate Field, Onshore Abu Dhabi, United Arab Emirates

Peter Melville, Omar Al Jeelani, Saeed Al Menhali, Jürgen Grötsch

AAPG Special Volumes

... detailed geologic model has been built for the field with 11.5 million cells at a 1-ft (0.3048-m) vertical increment and 175-m cell size. The layer...

Restorations of faulted domes

Mohammed M. Al-Fahmi, Andreas Plesch, John H. Shaw, and John C. Cole

AAPG Bulletin

... well logs that are tied to the 3-D seismic reflection data. The seismic data were processed (prestack time migration with post-stack enhancement...

Buried rift basin under the Kalpin fold-thrust belt in the northwestern Tarim Basin: Implications for deep oil and gas exploration

Cheng Zhong, Tongsheng Zeng, Chengzao Jia, Guoqi Wei, Dong Jia, Yongjin Zhu, Hongwei Yin, Zhuxin Chen, Xing Wang, and Yong Zhang

AAPG Bulletin

... borehole information and P-wave velocity (VP) (Table 1). The 2-D seismic data were reprocessed using prestack depth migration (PSDM), a technique...

Emplacement and evolution of the Mahogany salt body, central Louisiana outer shelf, northern Gulf of Mexico

Mark G. Rowan, Robert A. Ratliff, Bruce D. Trudgill, Jaime Barceló Duarte

AAPG Bulletin

...) gravitational collapse of the inflated salt stock after depletion of the deep source layer, leading to basinward extrusion of a subhorizontal salt...

Presalt stratigraphy and depositional systems in the Kwanza Basin, offshore Angola

Arthur Saller, Shawn Rushton, Lino Buambua, Kerry Inman, Ross McNeil, and J. A. D. Tony Dickson

AAPG Bulletin

... in the presalt of the Kwanza Basin. Dolomite (Figure 3A, B) occurs as (1) a primary precipitate with no apparent precursor, (2) a diagenetic replacement...

Fluid Substitution as an AVO Calibration for Quantifying Uncertainty of Gas Presence in Late Miocene Binio Sandstone, Kampar Area, Central Sumatra Basin

Istiqlal Dalimunthe, Pamela Amelia Barus, Jhon Johannes Wood, Febrie Ekaninggarani

Indonesian Petroleum Association

... is located on the crest of the structure. The evaluation includes Amplitude Versus Offset (AVO) gather analyses in this PreStack Time Migration (PSTM) seismic...

Integrated Multidisciplinary Reservoir Characterization of the Three Forks Formation in the Williston Basin, Divide County, North Dakota

Shane M. Mogensen, Samuel D. Fluckiger, Riley Brinkerhoff, Inna Tsybulkina, Vasudev Bansal, Francisco Brito, Cesar Marin, Santi Randazzo, Michael Hoffman

Unconventional Resources Technology Conference (URTEC)

... Forks core intervals. 3D Seismic data were utilized to propagate the HRA model away from well control. Simultaneous, geostatistical, prestack seismic...

Seismic speckle as multiplicative noise explaining land reflections distorted by near-surface scattering

Andrey Bakulin, Dmitry Neklyudov, Ilya Silvestrov

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Introduction In the presence of complex near surface, seismic data often exhibit highly obscured and chaotic prestack reflections even after processing...

Advanced Imaging and Inversion for Oil Production Estimates in Unconventional Resource Plays

Greg M. Johnson, Paul Miller, David Phillips

Unconventional Resources Technology Conference (URTEC)

... consent of URTeC is prohibited. Summary We introduce a no-compromise advanced workflow for imaging and prestack inversion of 3D seismic data...

Acoustic impedance multichannel inversion constrained by spatial reflection features

Yaming Yang, Xingyao Yin, Kun Li

International Meeting for Applied Geoscience and Energy (IMAGE)

.... However, traversals and loops are extremely time-consuming, making multi-channel inversion challenging to apply widely, especially for prestack or 3D...

Extrapolated surface-wave dispersion inversion

Hongyu Sun, Laurent Demanet

International Meeting for Applied Geoscience and Energy (IMAGE)

... layer. The P-wave velocity and density inside each layer are derived from Vs for RESULTS We extrapolate low-frequency surface waves from band-limited...

The presalt Santos Basin, a super basin of the twenty-first century

Rui Jorge Baptista, Andre Etienne Ferraz, Cristiano Sombra, Eugenio Vaz dos Santos Neto, Rafael Plawiak, Christiano Lopes Lops Silva, André Luiz Ferrari, Naresh Kumar, and Luiz Antônio Pierantoni Gamboa

AAPG Bulletin

... that were later covered by a thick layer of evaporites, creating excellent reservoirs and seals resulting in a prolific petroleum system revealed in 2006...

4D Seismic and Rock Physics Modeling Responses to Reservoir Steam Flood

Muhammad Edisar, Lilik Hendrajaya, Gunawan Handayani, Umar Fauzi, Laode Ngkoimani, Yarmanto

Indonesian Petroleum Association

... property. Simulation model for steam rigorous fluid modeling average porosity by layer no lateral heterogeneity spatially symmetrical, pressure...

The Geophysicists' Bane: Multiple Suppression on the North West Shelf

C. R. T. Ramsden, M. R. Hobson, R. Cooper

Petroleum Exploration Society of Australia (PESA)

... section. The carbonate layer introduces a steep velocity gradient in the shallow section, followed by an ©Petroleum Exploration Society of Australia...

Integration of Microseismic With Rock Properties From Multi-Component Seismic Data, Mississippi Lime Play, North-Central Oklahoma

Scott W. Singleton, Shihong Chi, Crystal Lapaire, Lisa Sanford, Paul Constance

Unconventional Resources Technology Conference (URTEC)

.... Third, layer mineralogy or lithology can vary across the area, meaning that the magnitude of Vfast can change due to a cause totally unrelated...

Seismic inversion with implicit neural representations

Juan Romero, Wolfgang Heidrich, Nick Luiken, Matteo Ravasi

International Meeting for Applied Geoscience and Energy (IMAGE)

... problems field is the IntraTomo framework (Zang et al., 2021). IntraTomo synergizes a coordinate-based multi-layer perceptron (MLP) to estimate a density...

Pore Pressure Prediction and Its Relationship to Structural Style in Offshore Tarakan Sub-Basin, Northeast Kalimantan

Perdana Rakhmana Putra, Tasiyat, Benyamin Sapiie, Agus M. Ramdhan

Indonesian Petroleum Association

...-slope area deformation is dominated by toe-thrusts. Gravitational sliding associated with a thick layer of early Miocene shale was interpreted...

Reduction of Gross Rock Volume Uncertainty in a Salt Flank Structure Using Dipmeter and Image Log Data

Carmen Garcia-Carballido, Aadam Styles, Michael Poppelreiter

AAPG Special Volumes

... to be challenging.To better image the reservoir and plan two long horizontal wells on the flanks of the salt structure, two new prestack depth migration (PSDM...

Application of seismic curvature attributes in the delineation of coal texture and deformation in Zhengzhuang field, southern Qinshui Basin

Lutong Cao, Yanbin Yao, Dameng Liu, Yanhui Yang, Yingjin Wang, and Yidong Cai

AAPG Bulletin

... seismic identification techniques and three-parameter amplitude versus offset analysis methods. L.-y. Peng et al. (2013) used prestack elastic impedance...

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Geometry and Kinematic Evolution of Inversion Structures

Shankar Mitra

AAPG Bulletin

...°, respectively, were done. A clay layer above the blocks represented the preextensional sedimentary units and recorded the deformation in these units...

The critical evaluation of carbon dioxide subsurface storage sites: Geological challenges in the depleted fields of Liverpool Bay

Lauren Chedburn, John R. Underhill, Sam Head, and Rachel Jamieson

AAPG Bulletin

... and Gas Authority (now the North Sea Transition Authority); PSTM = prestack time migration. On October 8, 2020, Eni UK Ltd. (the operator of the fields...