Advanced analysis of helicopter-borne microTEM data for seismic base of sand corrections

Ersan Turkoglu, Daniele Colombo, Ernesto Sandoval-Curiel

International Meeting for Applied Geoscience and Energy (IMAGE)

... replacement velocity and a detailed surface of the datum are needed for reliable seismic imaging in time and depth. Laboratory and dedicated field measurements...

Toward a Sequence Stratigraphic Framework for the Frasnian of the Western Canada Basin:REPLY TO DISCUSSION of J. Wendte and A. Embry

Ken Potma, John A. W. Weissenberger, Pak K. Wong, Murray G. Gilhooly

CSPG Bulletin

... in similar water depths to the shallow water carbonates. Choosing a datum near the top of the BHL sequences has the effect of "pulling up" the wells...

Abstract: Microseismic Event Locations Uncertainity and Acquisition Geometry; #90224 (2015)

Amna Feroz and Mirko van der Baan

Search and Discovery.com

... time picks, σz is the uncertainty in azimuth calculation which is affected by the P wave travel time picks. PD is the probability density...

Volume-constrain first arrival tomography based near surface modeling and its application

Naijian Wang, Zhihui Yan, Qingpo Ma, Wei Wu, Yunfei Zu, Yonggui Hu

International Meeting for Applied Geoscience and Energy (IMAGE)

... migration imaging. And first arrival travel-time tomography with near-surface data constraints is a common method to establish near-surface velocity model...

Presentation of a Velocity Mis-Tie

W. B. Robinson

Oklahoma City Geological Society

... as results indicate. My faith in velocity control is reaffirmed at this time, since the observations I am about to present are quite drastic. After one paper...

Velocity as a Problem in Mississippi

R. R. Phillips

GCAGS Transactions

... of the trouble. The holes were deepened and an up-hole time velocity survey run in each. Figure II will show the survey End_Page 45...

Application of Robust Noise Reduction on a Land 3D Seismic Data

Agus Abdullah, Jesse Shaw

Indonesian Petroleum Association

... of as a function of time t, is the surface wave the horizontal wavenumber, and r is the sourcereceiver offset. GRB accounts for the effect of dispersion...

Abstract: High-Accuracy Relative Event Locations using a Combined Multiplet Analysis and the Double-Difference Inversion; #90174 (2014)

Fernando Castellanos and Mirko van der Baan

Search and Discovery.com

... in time picks and on the velocity model used, which is usually 1-D and cannot exactly represent the true velocities of the Earth (Pavlis, 1992...

The plug drum effect, or why your microseismic events may not be where you think they are

Guillaume Bergery, Zhishuai Zhang, Jing Du, D. Diller, T. Shuck, B. Fish

Unconventional Resources Technology Conference (URTEC)

... were showing the same behavior. If this effect is not taken into account during the velocity model calibration, the resulting incorrect velocity...

The Use of Physical Modeling to Resolve Offshore Seismic Problems

B. J. Evans, M. Urosevic

Indonesian Petroleum Association

.... In order to use water to represent the ocean, it, therefore, required a model velocity scale of 1 : 1. This meant that time and distance scaling...

The Role of Regional Seismic Surveys in the Exploration of the North West Shelf

J. Ostby, C. Johnston

Petroleum Exploration Society of Australia (PESA)

... velocity stacking (Hampson, 1986; Russell et al., 1990) where reflection or primary events and/or multiples are w WATER BOTTOM Figure 2: Multiple...

3.2 Basement Involved: 3.2.2 Basement Thrust and Reverse Faults: Seismic Profile: North Fork Area, Powder River Basin, Wyoming

D. S. Stone

AAPG Special Volumes

... be due to the combined effect of curvature (spherical divergence) and a small reflection coefficient. Converting the seismic time section to migrated...

Abstract: Post-processing Technique to Relocate Microseismic Events Using the Double-Difference Method; #90187 (2014)

Fernando Castellanos and Mirko van der Baan

Search and Discovery.com

... monitoring, is mainly affected by several factors: a limited sourcereceiver configuration, errors in time picks and in the velocity model used, which...

Anisotropic Multi-Azimuthal Velocity Model Building and Depth Imaging on Tulip 3D Coil Shooting Survey

Michele Buia, Suyang Chen, Olga Zdraveva, Swee Leng Ng, Martin Bayly, Michelle Tham

Indonesian Petroleum Association

... velocity model for the first iteration of grid tomography was derived from edited time domain interval velocities with strong smoothing. Depth migrated...

Structural and Sequence Geometry of the Kiunga Area, Papuan Foreland Basin, Papua New Guinea

S. A. Kawagle, J. B. Meyers

Papua New Guinea (PNG) Petroleum Convention Proceedings

... interpreted on profiles in two-way travel time (TWTT), and times were recorded where sequence boundaries corresponded to velocity picks. Travel times were...

High Resolution Monitoring and Modeling of Steam Injection in the Athabasca Oil Sands at UTF: A Case Study

Search and Discovery.com

... sands deposit in order to construct a petrophysical velocity model of the SAGD process. Although the injected steam pressure and temperature controls...

Aspects to the Resolving Power of 3D Seismic Surveys

Wolfgang Houba

Geological Society of Malaysia (GSM)

... to an optimum velocity field determination for stacking and migration. RESOLVING POWER OF 3D SEISMIC SURVEYS 39 Spatial aliasing and migration...

A Seismic Method for Estimating Subsurface Vp/Vs Ratio Based on Converted Waves: A Case Study From Arabian Gulf

Search and Discovery.com

Processing the KTK 3D seismic Survey for Azimuthal Information: San Joaquin Basin, California; #41649 (2015)

M. Lee Bell and Gary Myers

Search and Discovery.com

... constrained P & PS estimation Robust Noise Attenuation P &PS Velocity Estimation Angle •  7 NMO Vp/Vs Semblance: stacks 8 Preserving Azimuth...

Chapter Nine: Inversion and Interpretation of Impedance Data

Rebecca B. Latimer

AAPG Special Volumes

... of the correlation difficulties arise in the time-to-depth conversion of the seismic data cube or the depth-to-time conversion of the well data. Velocity data volumes...

Acoustic and Elastic Modeling of Seismic Time-Lapse Data from the Sleipner CO2 Storage Operation

R. J. Arts, M. Trani, R. A. Chadwick, O. Eiken, S. Dortland, L. G. H. van der Meer

AAPG Special Volumes

...-stack estimation of time-lapse seismic velocity changesAn example from the Sleipner CO2-sequestration project, in E. S. Rubin, D. W. Keith, and C. F...

Structural Trend Analysis by Axial Surface Mapping: Discussion

Donald S. Stone

AAPG Bulletin

... in Pico Formation based on 3-D depth migration using a "revised velocity field." Fig. 3. Interpreted, north-south, time-migrated seismic profiles...

Automated processing development at a CO2 site: Phase detection, location, magnitude

Jian Zhang, Kevin D. Hutchenson, Elige B. Grant, Paul A. Nyffenegger, Mark A. Tinker

International Meeting for Applied Geoscience and Energy (IMAGE)

... the difference between an autopick (machine) and manual (analyst) pick with phase onset on a typical waveform. Note the two picks are very close in time...

Abstracts: Seismic Wave Propagation and Imaging in Heterogenous Media; #90173 (2015)

Yijian Meng, Emmanuel Bongajum, and Bernd Milkereit

Search and Discovery.com

.... The result shows that for models with velocity perturbations of ~ 3%, wave propagation in the layered model has strong local distortions in amplitude and time...

MAZ Processing for Basement Fracture: A Case Study on 3D Conventional Land Seismic Dataset

Ahmad Zazeli Fuadi, Yatty Surtiati

Indonesian Petroleum Association

... starting from 1st velocity picking. To reduce processing time, we used the refraction static from previous processing. On the regularization step, we split...