The Challenge of Applying New Technologies to Exploration in a Sub Andean Basins

Marcelo Benabentos, Pedro Muñoz, Juan Uribe, Francisco Ortigosa, Dewi Jones

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... for near surface, Ray Tracing based survey design, Long offset-low fold seismic, and Wave Equation Migration in shot domain. The final goal is to reduce...

Application of generalized radon transform migration to crosswell seismic geometry

Shujaat Ali, Olga Podgornova, Takashi Mizuno, Joel Le Calvez

International Meeting for Applied Geoscience and Energy (IMAGE)

... to phase velocity Cz and time and depth steps (Δt, Δz) as, ௭ ଴ Therefore, ௭ Using the absolute value of 1/p in the equation above produces a component...

Refraction Statics, A Comparison Among Processing Contractors

Bambang Sudewo

Indonesian Petroleum Association

.... They affect velocity analysis, reflection continuity, resolution and apparent structure. When statics supplied from the field are inadequate...

Upper Crustal Structure Derived from Seismic Refraction Experiments: Grand Banks of Eastern Canada

I. Reid, C.E. Keen

CSPG Bulletin

... displayed at a reduced velocity of 4.5 rather than 6 km/s. Static corrections have been applied to the travel times for variations in depth...

A New Approach to Shale Compaction and Stratigraphic Restoration, Beaufort-Mackenzie Basin and Mackenzie Corridor, Northern Canada (1)

D. R. ISSLER

AAPG Bulletin

... plots (Figures 7-11). Depending on the data distribution, porosity-depth curves were calculated by linear regression using the linear equation, phi...

A Novel Method of Deriving Weathering Statics from First Arrival Refractions

G. W. Hollingshead, R. R. Slater

Pacific Section of AAPG

... procedure. Maintaining a constant set of offset distances also helps to alleviate problems arising from curvilinear ray paths where the velocity...

Advanced Approach Toward Understanding Geologically Complex Area Using MDRS (Multi-Dip CRS): A Case Study

Naoshi Aoki, Shogo Narahara, Akihisa Takahashi, Tsukasa Nishiki

Indonesian Petroleum Association

... the source-receiver offset and the midpoint coordinate. In the equation, α represents the emergence angle of ZO ray; KN and KNIP are curvatures...

Abstract: Basin-Level First Arrival Tomographic Inversion Near-Surface Modeling and Key Technologies; #91210 (2025)

Liansheng Liu, Chunlan Xing

Search and Discovery.com

... to the use of all seismic data, micro-logging, and small refraction data from the entire exploration area to construct a unified near-surface velocity model...

Joint inversion of first-break and early-arrival wave for near surface imaging

Yiming Pan, Kai Zhang, Yipeng Xu, Hailin Wang, Ping Jiang

International Meeting for Applied Geoscience and Energy (IMAGE)

... the velocity stress equation of first-order time is as follows  2 d  x, t , xs  2  t 2 v3 s t   dt  x, t , xs   1    d w  x, t , xs...

Seismic Velocity Dispersion and the Petrophysical Properties of Porous Media

Search and Discovery.com

... the model fitting for the velocity dispersion data observed in the uncorrelated vibrator sweep received at the depth 1085 m. Compared with the linear...

Chart Migrations

Frank A. Roberts

Oklahoma City Geological Society

... or irregular variations of velocity with time or depth. The ray paths in this chart are labeled with the t or time dip for a fixed spread length...

Geobody-oriented interpretable velocity fusion modeling in depth domain with seismic facies informed segmentation method

Meng Li, Qingcai Zeng, Hao Shou, Nan Qin, Chunming Wang, Tongsheng Zeng

International Meeting for Applied Geoscience and Energy (IMAGE)

...Geobody-oriented interpretable velocity fusion modeling in depth domain with seismic facies informed segmentation method Meng Li, Qingcai Zeng, Hao...

Seismic Migration: Part 7. Geophysical Methods

Ken Larner, David Hale

AAPG Special Volumes

... that is homogeneous (constant P-wave velocity) with the exception of an isolated boulder at some depth. Also shown are the straight ray paths traveled...

Derivation of Seismic Depth Sections

H. Buchholtz, W. Houba

Geological Society of Malaysia (GSM)

.... Improved depth sections by combination of ray tracing and wave equation migration. Exploration Seminar, Cairo 1984 SCHNEIDER, J. and RIST, H., 1984. Depth...

Crustal thickness and velocity structure of southern Peninsular Malaysia

Abdul Halim Abdul Latiff, Amin Esmail Khalil

Geological Society of Malaysia (GSM)

... the inverted waveform indicate a gradual velocity increment from Conrad boundary (around 10-12 km depth) to Moho thickness in both cases. The findings...

Abstract: Azimuthal Simultaneous Elastic Inversion; #90172 (2014)

Jon Downton, Benjamin Roure

Search and Discovery.com

...- and anglelimited seismic traces are modeled using the anisotropic Zoeppritz equation to generate equivalent reflectivity volumes which are then convolved...

Difficult Lithologies: Part 4. Wireline Methods

Khaled Hashmy, Mark Alberty

AAPG Special Volumes

... equations and the measured logs. The equations are not required to be strictly linear, although as the response equation become somewhat nonlinear, the search...

Integration of geology, rock physics, logs, and prestack seismic data for reservoir porosity estimation

Abdulaziz M. AlMuhaidib, Mrinal K. Sen, M. Nafi Toksoz

AAPG Bulletin

... average equation curve (Wyllie et al., 1956). Velocity ranges up to 2500 m/s (8202 ft/s) for a given porosity, and porosity may range from 10 to 40...

Chapter 4: Synthetic Seismograms and Their Uses

Tom Wittick

North Texas Geological Society

... reflector at a specific depth. In most cases the difference in acoustic velocity between rocks is the dominant factor in determining the reflection...

Synthetic Seismograms and Their Uses

Abilene Geological Society

... what the velocity would be if the rock at that depth were pure sand or pure shale. We then use the SP or gamma-ray log to determine the percent sand...

Graphical Techniques for the Analysis and Display of Logging Information: Chapter 2

John H. Doveton

AAPG Special Volumes

... gamma-ray gray-tone intensity images of the Permian-Cretaceous sequence of western Kansas [Abstract]: SEPM 1992 Theme Meeting, Fort Collins, CO, p. 19...

Time-Depth Modeling in High Pore-Pressure Environment, Offshore East Coast of India; #30463 (2016)

Nidhi Jindal, Ajoy Kumar Biswal, Kumar Hemant Singh

Search and Discovery.com

... tested on four models: a) the linear interval velocity model in depth, b) the linear interval velocity model in time (TWT), c) the average velocity model...

Using Reflected Phases to Improve Depth Resolution of Microseismic Source Locations from Single-Well Observations

James Rutledge, Nobukazu Soma

Unconventional Resources Technology Conference (URTEC)

... of trial depth positions, matched their arrivals to ray-trace arrivals from two distinct velocity boundaries while also honoring the direct P...

Elastic wave reverse-time migration with dynamic focused beams for weak anisotropic media

Ning Qin

International Meeting for Applied Geoscience and Energy (IMAGE)

... wave solution of dynamic ray tracing equation, respectively. According to the principle of reciprocity, the propagation matrix from point P...

Relation between dips of prestack time migrated and unmigrated data

Jagmeet Singh

International Meeting for Applied Geoscience and Energy (IMAGE)

... the correctness of the migration velocity model and revise velocities in an easy to determine direction (increase or decrease). A handy formula...