Hydraulic Fracture Monitoring Using Distributed Acoustic Sensing: A Case Study Using Dip-in Fiber

Chaoyi Wang, Yuanyuan Ma, David Eaton, Kelly MacDougall, Carolyn Furlong

Unconventional Resources Technology Conference (URTEC)

... velocity of approximately 950 m/s, which is too slow to be conventional tube waves. We refer to these events as ‘fiber waves’ as they appear to propagate...

The Composition of Seismic Reflections: Abstract

J. P. Woods

Tulsa Geological Society

... of the acoustic model and the results. Series of reflections are shown to illustrate different conditions within the apparatus. When one thick seismic layer...

AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction

David W. Bell

AAPG Special Volumes

... depth interval. Note that points at different depths that have the same velocity also have the same effective pressure. Velocity plotted vs...

Non-Seismic Detection of Hydrocarbons: An Overview; #40392 (2009)

Dietmar "Deet" Schumacher

Search and Discovery.com

... are at specific frequencies which are harmonics and subharmonics of 60 or 50 cycles, depending on the local power grid. The waves propagate as plane waves...

Tank Experiments on the Sorting Of Beach Material During Cusp Formation

N. C. Flemming

Journal of Sedimentary Research (SEPM)

.... Mean settling velocity is 30.5 cm/sec and mean sphericity is 0.68. FIG. 14. Contour diagram for the density of points per unit square for the sum...

Broadband Data from Flat Streamers: Considerations for Acquisition and Processing

Phil Fontona, Edward Hager

Indonesian Petroleum Association

... m deep receiver, thus optimizing the potential signal-to-noise at those notch frequencies. FIELD TRIALS A test line was shot with different broadband...

Wave and Bottom Sediment Interactions over a Submerged Sand Bank during the Winter Cold-Front Season, Western Louisiana

Daijiro Kobashi, Felix Jose, Gregory Stone

GCAGS Transactions

... backscatter sensor (OBS) data representing turbidity, shear velocity and shear stress due to waves are given in Figure 2. In general, waves...

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)

... upward to the receiver later (Claerbout, 2010). The different arrival time of the waves propagating from the source back to the receiver is used...

The Developing Role of Analysis in the Design of Floating Production Systems

D. B. Melver, D. Cash

Indonesian Petroleum Association

... be applied through the linearisation which is then possible. The pressure field round a moving structure in waves may then be expressed as the sum...

PINNslope: Physics-informed neural network slope prediction and interpolation with positional encoding

Francesco Brandolin, Matteo Ravasi, Tariq Alkhalifah

International Meeting for Applied Geoscience and Energy (IMAGE)

... encoding. Specifically, Nx and Nt (number of encoding frequencies in time) are chosen (empirically) to be different from each other. Seismic data present...

Chapter 5: Seismic Trace Inversion

Tom Wittick

North Texas Geological Society

... to be in a shale sequence and looking for a sand. The sand velocity is different from the shale velocity but by only a few percent rather than the 20+ percent...

Seismic Trace Inversion

Abilene Geological Society

... it is typical to be in a shale sequence and looking for a sand. The sand velocity is different from the shale velocity but by only a few percent...

Wave Modeling and Hydrodynamics

J. Ian Collins

Special Publications of SEPM

... gL gL c gT 211 Speed Length 211 c 211 d gT tanh tanh h L h L T T for d L 0 05 C Vid Tvgd L 411 d C Group Velocity 1 C gT v...

Fracture Identification and Evaluation Using S Waves, by Bob Hardage, #40792 (2011).

Search and Discovery.com

Broadband Seismic Technology and Beyond: Part VI: Towards a Ghost-Free Solution

Lasse Amundsen, Martin Landrø, Eivind Frømyr

GEO ExPro Magazine

.... The multi-level source concept puts guns, clusters or sub-arrays at different depths and fires them sequentially so that only the down-going waves build up...

Research and application of shallow surface wave prediction attenuation in dual complex mountainous exploration areas

Xinyue Song, Zaijin Zhang, Yi Bao, Cheng Wang, Zhonghua Zhao, Yangyang Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... of shallow seismic data is crucial for subsequent velocity modeling and target layer imaging. So suppressing shallow waves is an extremely important means...

Fluid and Sediment Dynamics on Continental Shelves

Donald J. P. Swift and Alan W. Niedoroda

Special Publications of SEPM

... indicates the relative amounts of energy expended in fluid motion of different frequencies. G: geostrophic frequency, D:diurnal tidal frequency, I...

Basic Seismic Processing: Part 7. Geophysical Methods

Peter M. Duncan

AAPG Special Volumes

... differences and near-surface velocity changes at different source and receiver stations must be removed. The relative elevation of each shot...

New technologies for seismic resolution enhancement and bandwidth expansion: Applications in SE Asian Basin

Yasir Bashir, Abdul Halim Abdul Latiff, Muhammad Sajid

Geological Society of Malaysia (GSM)

..., but utilizing different ghost effects, or by utilizing notch diversity along the cable. The set of methods will be commonly known as “broadband...

3D anisotropic seismic simulation for fracture prediction in Sichuans Wufeng shale gas reservoirs

Xiang Li, Ziduo Hu, Chunhui Xie, Yancan Tian, Wei Liu, Xinyu Fang, Gang Yao

International Meeting for Applied Geoscience and Energy (IMAGE)

... the extended SEG HESS model, and observed different wavefield propagation characteristics in VTI and HTI media. The research extends into practical...

Earth crustal analysis of Northwest Sabah region inferred from receiver function method

Abdul Halim Abdul Latiff, Faridah Othman

Geological Society of Malaysia (GSM)

... of S-waves is around 60% of that P-waves. However, the velocity varies according to the material composition of the medium in which it travels. S waves...

Segregating Porosity-Permeability Transform Using Elocity and Pore Structure in Carbonate Rock

Albertus Ditya, Gregor P. Eberli, Don McNeill, James Klaus

Indonesian Petroleum Association

... the Choquette and Pray classification (1970), corresponds to a different deviation of acoustic velocity from the Wyllie’s time average. The characteristics...

Joint velocity and event location inversion workflow in microseismic reservoir monitoring

Takashi Mizuno, Joel Le Calvez, Manish Lal Khaitan, Giulia Barisione, Irina-Tulia Stoia, Prakash Ranjan, Stefano Clerico, Xinyuan Li, Zheyuan Huang

International Meeting for Applied Geoscience and Energy (IMAGE)

... is the index of the property of the velocity model (Vp, Vs, Thomsen’s anisotropy parameter). The block model can be considered as a sum of block models...

Wave-Formed Sedimentary Structures„A Conceptual Model

H. Edward Clifton

Special Publications of SEPM

... Geological Survey California 94025 ABSTRACT produced by shoaling waves can be integrated into a conceptual model based on velocity um velocity asymmetry d...

Revealing a Shaly (Tight) Sand Reservoir's Distribution by Applying an Untapped Sub-Frequency Combination Method: A Case Study in the West Jambi II Block, South Sumatra Basin

Indra Luthfiana, C. Maya Resha Tuhar, Endi Erfanto, Randy Condronegoro, Hendra Niko Saputra, Abghia Dini Fanzuri, Yan Wijaya, Totok Parafianto

Indonesian Petroleum Association

... for different frequencies. A Wavelet is defined as a mother function (t) єL2 (R) with zero mean, which is localized in both time and frequency...