Results 41 to 50 of about 600,749 (229)

The Control of Sea Level Change over the Development of Favorable Sand Bodies in the Pinghu Formation, Xihu Sag, East China Sea Shelf Basin

Energies, 2022
The Pinghu Formation consists primarily of marine-continental transitional deposits. The widely distributed fluvial and tidal transgressive sand bodies comprise the main reservoirs of the Baochu slope zone in the Xihu Sag in the East China Sea Shelf ...
Zhong Chen, Wei Wei, Yongchao Lu, Jingyu Zhang, Shihui Zhang, Si Chen   +5 more
doaj   +1 more source

A Conjugate Operator Pair of Partial Differential Equations Bridging Born and Kirchhoff Approximations for Wave‐Equation Inversion

Geophysical Prospecting, Volume 74, Issue 6, July 2026.
ABSTRACT A conjugate operator pair is introduced for wave‐equation Kirchhoff modelling and migration, formulated as time‐space partial differential equations. The operator pair allows for iterative linearized waveform inversion and supports the reconstruction of angle‐dependent reflectivity images. The proposed forward modelling operator represents the
Wei Zhang, Mauricio D. Sacchi
wiley   +1 more source

Uncertainty-Weighted Robust Frequency-Scanning AVO Inversion for Fluid Prediction in Marine Low-Permeability Gas-Bearing Sandstones: A Case Study from the Xihu Sag, East China Sea

Journal of Marine Science and Engineering
Marine low-permeability gas-bearing sandstones are commonly characterized by thin sand–mud interbeds, poor reservoir properties, limited seismic bandwidth, and heterogeneous pore structures and fluid distributions, which make stable fluid prediction from
Jianxing Wang, Wenji Wang, Junyang Cheng, Yang Zhao, Chenggang Xian, Zhitong Zhang, Fenglin Niu, Laibin Zhang, Zonghao Guo, Xin Yao   +9 more
doaj   +1 more source

Vertical Seismic Profiling and Piggyback Experiment for Seismic Characterization of Geothermal Reservoirs: Case Study From Southern Tuscany, Italy

Geophysical Prospecting, Volume 74, Issue 6, July 2026.
ABSTRACT We present an approach for seismic characterization of a deep supercritical geothermal reservoir in the direct vicinity of an exploration well. Our investigation area is the Larderello geothermal field in Tuscany (Italy) where we focus on the K‐horizon, which is represented by a strong reflector at a depth of 3–6 km marking the geothermal ...
Lena Bräunig, Stefan Buske
wiley   +1 more source

Prestack Inversion Identification of Dolomite Reservoirs in the Fourth Member of the Sinian Dengying Formation in Moxi Area, Sichuan Basin, SW China

Geofluids, 2021
The dolomite reservoir of the fourth member of Dengying Formation in Moxi area of Sichuan Basin is thin, is fast in lateral variation, and has P-impedance difference from the surrounding rock; it is difficult to identify and predict the dolomite ...
Yong Wu, Xuxu Wang, Lu Zhou, Chongyang Han, Lianjin Zhang, Xuemei Lan, Peng Lu   +6 more
doaj   +1 more source

Viscoacoustic Full Wavefield Migration With Tomographic Q Estimation

Geophysical Prospecting, Volume 74, Issue 4, May 2026.
ABSTRACT Seismic wave propagation in the Earth's subsurface is influenced by anelastic attenuation, which causes energy loss and waveform distortion, degrading image resolution. This effect, quantified by the quality factor (Qf${{\textit {Q}}_f}$), is particularly pronounced in settings such as carbon capture and storage and near‐surface studies, where
Mohammad Safari, Dirk Jacob Verschuur
wiley   +1 more source

OBN seismic data PP- and PS-waves joint inversion and reservoir characterization

Frontiers in Earth Science
The use of seismic exploration data to invert shear (S-) wave information plays a very important role in oil and gas exploration, especially in reservoir prediction with increasingly complex lithology and deeper target layers. Combining longitudinal (P-)
Fang Li, Shiyou Liu, Rui Wang, Yuyuan Tang, Shuangquan Chen   +4 more
doaj   +1 more source

Traveltime Tomography to Unravel the Chalk Group Structures at the Gassum CCS Site, Denmark

Geophysical Prospecting, Volume 74, Issue 3, March 2026.
ABSTRACT In carbon capture and storage (CCS) projects, it is important to investigate the seal properties, which often include the shallower part of the investigated area. Reflection seismic data in most of the Danish Basin appear less strong and coherent in the top 500 m, and hence reflectivity alone cannot be used to study the integrity of these ...
Emmanouil Konstantinidis, Michael Westgate, Alireza Malehmir, Ulrik Gregersen, Marie Keiding   +4 more
wiley   +1 more source

Extrapolating low-frequency prestack land data with deep learning

, 2020
Missing low-frequency content in seismic data is a common challenge for seismic inversion. Long wavelengths are necessary to reveal large structures in the subsurface and to build an acceptable starting point for later iterations of full-waveform ...
Ovcharenko, Oleg, Daniel Peter, Alkhalifah, Tariq Ali, Kazei, Vladimir, Vladimir Kazei, Ilya Silvestrov, Peter, Daniel, Pavel Plotnitskiy, Andrey Bakulin, Plotnitskiy, Pavel, Silvestrov, Ilya, Oleg Ovcharenko, Tariq Alkhalifah, Bakulin, Andrey   +13 more
core   +1 more source

Mechanical property prediction and 3D modeling via statistical regression and prestack inversion: a case study from the Bonan Sag

Dizhi lixue xuebao
Objective  Unconventional oil and gas development is frequently hindered by complex reservoir structures and unquantified rock mechanical properties.
WANG Bin, XIAO Han, NIU Xuemin, ZHANG Ruixuan, GE Xing   +4 more
doaj   +1 more source