Chapter Five: Reservoir Identification

Alistair R. Brown

AAPG Special Volumes

... in depth but is depressed in time by the increased travel through the low velocity, wedge-shaped gas sand. Flat spot dip caused in this way will always...

Phase pilot recovery: A foundation for mitigating speckle scattering noise in seismic data

Akshika Rohatgi, Andrey Bakulin, Sergey Fomel

International Meeting for Applied Geoscience and Energy (IMAGE)

... velocity variations can impair migration, as Xe et al. (2016) observed, suggesting that depth migration might need its own threshold for phase errors...

Behind the Hybrid Curtain

Karyna Rodriguez, Neil Hodgson

GEO ExPro Magazine

... conceal the signs of contourite activity as they are dominated by basin-ward dip, incision and construction, and basin floor fans may have few current...

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)

... (Figure 1) was installed at the Newell County facility, where small volumes of CO2 are being injected into the reservoir at 300 m depth (Lawton et al...

Applications of the EM Method in Complex Thrust Belts and Foreland Basins

Search and Discovery.com

Adventures in Pre-Stack Depth Migration; #110121 (2010)

James Allen

Search and Discovery.com

...Adventures in Pre-Stack Depth Migration; #110121 (2010) James Allen AV Adventures in Pre-Stack Depth Migration* James Allen1 Search and Discovery...

Geophysical Characterization of Lithology--Application to Subtle Traps

Carl H. Savit, Changsheng Wu

AAPG Special Volumes

..., to transform these impedance values to velocity values by removing the density effect; this step requires the incorporation of velocity data from either well...

Abstract: Loma Vieja Field: Structural Geology and Related Velocity Fault Shadow in the Upper Wilcox (Fandango) in South Texas

James C. Meyerhoff and Rion Braddock

Houston Geological Society Bulletin

... bodies, that may have any effect on the ray paths and velocity of seismic energy. Figure 2. Depth structure map at the top of the Fandango series (top R...

Effective Use of High Density VSP Measurements to Predict Pore Pressure and Estimate Mud Weight Ahead of Drilling in the Mahakam Delta, Indonesia

Mohammed Badri, Stephane Gazet, Gregoire de Tonnac

Indonesian Petroleum Association

... shown in black. Seismic Stacking velocity Figure 9 Overpressure zone Interval velocity, computed using Dix Time-Depth, computed using Dix - Seismic...

Correlation of seismic velocity and density of metasandstone from Kati Formation, Seri Iskandar, Perak, Malaysia

Norsyafiqah Salimun, Abdul Ghani Rafek, Khairul Arifin Mohd. Noh

Geological Society of Malaysia (GSM)

... the depth effect on seismic velocity. Through hundreds of sample testing, Gardner et al. (1974) proposed velocity (Vp) and density (p) relationship...

Interpretative PSDM Workflow for Solving Complex Imagery Below Faults and Carbonates Reefs in South Mahakam, Kutai Basin: An Interpreters Point of View

Cepi Muhamad Adam, Nadir Abdoun, Bertrand Duquet, Florent Bertini, Yves Le Stunff

Indonesian Petroleum Association

... the interpreter and the depth imager is indeed critical to build a correct depth-velocity model that will noticeably improve the seismic image. Velocity model...

First-Arrival Traveltime Inversion in the CMP Domain: Method and Application

Search and Discovery.com

... or turning wave arrival. Here, the assumption of turning wave was used to transform time-offset first-arrival into velocity-depth model. Figure 1 shows...

Some 3D Seismic Applications Offshore Sarawak

Ronald Hoogenboom

Geological Society of Malaysia (GSM)

... not be requited (as happens with 2D seismic surveys). The very significant effect of 3D seismic acquisition and processing is illustrated by a comparison using...

Joint VTI and Mud Slowness Inversion Using Multiple Modes and Adaptive Weighting

Mark Collins

Unconventional Resources Technology Conference (URTEC)

.... The depth-to-depth inversion uses an adaptive weighting scheme as a function of frequency to reduce the effect of noise, and a global optimization over...

Contributions of Seismology to Plate Tectonics

Jack Oliver

AAPG Bulletin

... in geology. Studies of seismic body waves have demonstrated that, at least for some regions, there is a velocity inversion with depth...

The identification and cause analysis of abnormal velocity in the western part of Shaleitian Bulge

Zongyu Zhen, Gang Peng, Xuefeng Zhou, Bo Xi

International Meeting for Applied Geoscience and Energy (IMAGE)

... the velocity anomaly without the influence of buried depth after elimination compaction effect. As we can see in Figure 4, the velocity is high...

Yesterday, Today, and Tomorrow in Seismic Exploration

Emil J. Mateker, Jr.

GCAGS Transactions

... stacking velocity were introduced, geophysicists became interested in the use of these velocity data for other purposes, such as depth computation...

Outlining Shale Masses By Geophysical Methods

A. W. Musgrave , W. G. Hicks

AAPG Special Volumes

... to 14,000 ft, and if the velocity within the shale mass is 8,000 ft/sec, a depth error Fig. 22. Depth errors from assumed velocity in presence of shale...

Rock Physics Guided Velocity Modeling and Reverse-Time Migration for Pore Pressure Prediction and Depth Imaging in Complex Areas

Nader C. Duta, Sherman Yang, Yangjun (Kevin) Liu, Lawrence Cho, Jie Cui

Indonesian Petroleum Association

...Rock Physics Guided Velocity Modeling and Reverse-Time Migration for Pore Pressure Prediction and Depth Imaging in Complex Areas Nader C. Duta...

Seismic Stratigraphic Model of Depositional Platform Margin, Eastern Anadarko Basin, Oklahoma: Section 3. Stratigraphic Models from Seismic Data

William E. Galloway , Marshall S. Yancey , Arthur P. Whipple

AAPG Special Volumes

... relatively insensitive to errors in velocity selection. (Tests indicated that variations in velocity of several hundred feet per second had no discernible...

Abstract: Migration of Velocity Spectra: An Example from the Timor Sea, by J. C. Beasley and R. Klotz; #91015 (1992).

Search and Discovery.com

Developing a New Technique Through Partnering with Contractors: Reservoir Prediction Utilizing AVO Walkaway VSP Data to Calibrate Surface Seismic Gathers, a Case Study in Indonesia

Patricia L. C. Henderson, Dan Hampson, Scott Leaney, Nigel Smith, John Rice, Dave Boreham

Indonesian Petroleum Association

... × 125M GRID SORTING OF THE EIGHT GROUPS OF 30 FOLD GATHERS INTO 240 FOLD "SUPER GATHER" NMO CORRECTION USING 3D STACKING VELOCITY FIELD RADON...

Seismic Velocity Anisotropy in Chimore Area, Bolivia

Michael Fry, Eloy Martinez, James Baker, Mark Wallace

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... rapidly in a spatial sense. Geologic dip can have a similar azimuthal time shift signature, but the effect is typically much less when comparing degrees...

Seismic Imaging and Interpretive Model Building in the Colombian Andes

Rob Vestrum

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

.... Depth migration in thrust-belt environments like the Colombian Andes requires an interpretive approach to building a depth-migration velocity model...

A Breakthrough in the Seismic Exploration Result on Small Oil Fields

G. Valeev, R. Enikeyev, T. Shestoukh

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

...-sections brought to single time scale. Consequently as stated above errors follow due to their dissimilarity. Effect of errors can occur...