Structural Uncertainties in Mature Field ; Example from Sungai Gelam-C Field

Search and Discovery.com

Time Depth Conversion of a Prospect With Near-Surface Velocity Anomalies Using Stacking Velocites and PSDM Velocities: A Comparison

Tan Boon Hua, Lothar Schulte

Indonesian Petroleum Association

... Velocity Check shot Details PSTM & PSDM volumes Residual Move Out (RMO) Stacking Velocities & PSDM Velocities 13 wells with check shot/VSP surveys © IPA...

Examining the significance of the converted-modes beneath an ultra-high-velocity caprock: Physical modeling and a Gulf of Mexico salt proximity VSP survey

Jingjing Zong, Yukai Wo, Jizhong Yang, Nikolay Dyaur

International Meeting for Applied Geoscience and Energy (IMAGE)

...Examining the significance of the converted-modes beneath an ultra-high-velocity caprock: Physical modeling and a Gulf of Mexico salt proximity VSP...

Velocity and Velocity

M. Al-Chalabi

Petroleum Exploration Society of Australia (PESA)

... GROUND ::: TRUE VELOCITY DISTRIBUTION) Acquisition TRAVELTIME DATA Multi-channel Processing Processing ~~===t::=~~-J Factors Conventional Time...

Estimating Stimulation-Zone Anisotropy Effects During Microseismic Monitoring

Martin Karrenbach, Steve Cole, Victor Yartsev

Unconventional Resources Technology Conference (URTEC)

... monitoring analysis. Thus, the p-sonic, averaged shear-sonics, together with VSP and surface seismic data were used to build an isotropic 3D velocity model...

G. Non-Normal Incidence Reflections and the Determination of Lithology - Use of Shear Waves and Amplitude with Offset

Norman S. Neidell

AAPG Special Volumes

...) Robertson (J.D.), "Carbonate Porosity from S/P Traveltime Ratios," Preprint, 53rd Annual Mtg. SEG, Las Vegas, Sept. 11-15, 1983. (6) Corbin (R.J.), Bell...

Subtle Discontinuity Detection and Mapping for Carbon Sequestration Assessment in the Illinois Basin

J. H. McBride, R. W. Keach II, H. E. Leetaru, W. J. Nelson

AAPG Special Volumes

.... The seismic data are displayed in traveltime: no detailed velocity information is available for time-depth conversion; however, because the lateral variation...

Confirming Reservoir Geometry and Exploration Opportunity through 5D Interpolation PSDM in The Sub-ophiolite Zone, Banggai Sula Basin, Central Sulawesi

Mufied Ahmad, Dadang Ramdan, Yudi Herdiana, Abdullah Nurhasan, Arif Budi Mulyawan

Indonesian Petroleum Association

...). The available VSP data was incorporated and utilized for velocity model building through grid-based tomography iterations. The stacked volume was produced...

Phase-encoded waveform inversion for multiples

Yike Liu, Bin He, Xiao-Bi Xie, Yingcai Zheng

International Meeting for Applied Geoscience and Energy (IMAGE)

... multiple because it does not involve any free surface reflection. When using equation 1 for velocity updating, the effect of multiples has been included...

Well Log Analysis and Seismic Attenuation in a Heavy Oilfield: Ross Lake, Saskatchewan; #20294 (2015)

Zimin Zhang, Robert Stewart

Search and Discovery.com

... by applying the spectral ratio method on near-offset VSP data (which used both vertical and horizontal vibrators). The Q values are most reliable...

Abstract: Velocity Dispersion in Field Seismic Data: Impact, Detection and Application; #90211 (2015)

Langqiu Sun

Search and Discovery.com

... to the correlation seismograms. In order to detect and measure velocity dispersion in the exploration seismic frequency band, uncorrelated broadband Vibroseis VSP data...

Research of accurate depth interpretation method for thin sand body in offshore reservoir and its application in A oilfield, Bohai Bay Basin

Li Wenbin, Hebing Tang, Xuetong Liu, Yichuan Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... constraint information to correct the influence of velocity change. Aiming at this problem above, we present a corresponding high-precision depth...

Modeling frequency attenuation due to gas in sandstone and carbonate gas reservoirs

Saleh Almeshari

International Meeting for Applied Geoscience and Energy (IMAGE)

... an integrated method of both rock physics and VSP Q-estimation to understand the viscoacoustic effect of gas on the recorded seismic data. However, even though...

Abstracts: Automatic P-wave Arrival Time Picking Method for Seismic and Microseismic Data; #90173 (2015)

Jubran Akram

Search and Discovery.com

.... The size of microseismic data is typically much greater than the other borehole recorded data (VSP and crosswell seismic). It is, therefore, more...

Integration of Depth Conversion, Seismic Inversoin and Modeling Over The Belida Field, South Natuna Sea Block "B", Indonesia

Patrick Jonklaas

Indonesian Petroleum Association

.../depth function. Deviation away from a compaction curve, i.e. lateral change in velocity, could be due to either lateral facies changes...

Abstract: Crosswell Imaging with LCB Beamlet, by Yueming Ye; Wu Ru-shan; Zhuang Xijin; #90163 (2013)

Search and Discovery.com

Fracture-Porosity Identification from Anisotropy AVO and Fluid Substitution Modelling in Seismic 2D Data

Septian Prahastudhi, Tenny Octaviani, Ayi Syaeful Bahri, Yulia Putri Wulandari

Indonesian Petroleum Association

... about velocity attenuation in cracked media. In 1985, Prof Leon Thomson published about weak anisotropy concept and the effect of aligned cracks...

Abstract: Influence of Cooling and Heating Rate on CO2 Condensation and Evaporation Observed in a Saturated Synthetic Rock Sample; #90187 (2014)

R. Kofman, A. Rabbani, G. Njiekak, and D. R. Schmitt

Search and Discovery.com

... of the saturated target rock at various pressures and temperatures. The velocity changes are evident in time-lapse vertical seismic profiles (VSP...

Seismic Imaging and Interpretive Model Building in the Colombian Andes

Rob Vestrum

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... ANDES ROB VESTRUM TBI (Thrust Belt Imaging): 2300, 645 - 7 Ave SW, Calgary, Alberta, Canada ABSTRACT Lateral velocity variation and dipping anisotropy...

Seismic-attribute Analysis for Gas-hydrate and Free-gas Prospects on the North Slope of Alaska

M. W. Lee, T. S. Collett, T. L. Inks

AAPG Special Volumes

... of these properties, coupled with the fact that gas hydrate tends to be more highly concentrated in high-porosity clean sands and sandstones, the combined effect...

Recent Advances in the Characterization of Unconventional Reservoirs with Wide-Azimuth Seismic Data

Ran Bachrach, Colin M. Sayers, Sagnik Dasgupta, Josimar Silva, Stefano Volterrani

Unconventional Resources Technology Conference (URTEC)

..., traveltime variations with offset and azimuth, relative to those predicted using the VTI reference velocity, were computed, and an elliptical...

Data-driven near-surface Q compensation: A case study in Sichuan Basin of China

Xinyuan Feng, Yulian Zhao, Mingtu Xiao

International Meeting for Applied Geoscience and Energy (IMAGE)

... value, such as from VSP or uphole surveys of dual-well, even from velocity, but it depends on other data, the usages is limited. Data-driven method...

Gas Hydrate Offshore Vancouver Island, Northern Cascadia Margin

M. Riedel, Eleanor C. Willoughby, Nigel Edwards, Roy D. Hyndman, George D. Spence, Ross Chapman, Marc-Andre Chen, Ivana Novosel, Katrin Schwalenberg

AAPG Special Volumes

... a velocity effect. It is not easy to determine if the BSR is primarily because of high-velocity gas hydrate above the BSR or low-velocity free gas...

Optimized downward continuation for the one-way wave equation in TTI media

Cosmin Macesanu, Faqi Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

... the effect of the least square fit on the accuracy of the phase interpolation (8). The ratio for the velocity values picked for display are v2 /v1 = 1.5...

Full-Waveform Inversion Application on 2D Slanted Streamer Data - A Case Study

Andreas Waluyo

Indonesian Petroleum Association

...-propagated wavefield to produce the gradient volume. Step 3. Correct the amplitude of the gradient proportional to the velocity change. Seismic waveform...