The Wave Equation Applied to Migration

D. Loewenthal, L. Lu, R. Roberson, J. Sherwood

Southeast Asia Petroleum Exploration Society (SEAPEX)

... the maximum velocity errors pertaining to the synthetic migration results in Figure 5. It Is emphasized that the 7-13% velocity dispersion refers...

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...

Effect of Moisture Upon Velocity of Elastic Waves in Amherst Sandstone

W. T. Born, J. E. Owen

AAPG Bulletin

...Effect of Moisture Upon Velocity of Elastic Waves in Amherst Sandstone W. T. Born, J. E. Owen 1935 9 18 19 1. (January) Laboratory measurements...

A new double-difference earthquake relocation algorithm for models with complex velocity structure

Xinding Fang, Siwei Li, Zhixiang Zhang, Tianrun Chen, Yingcai Zheng

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Michelini, A., and A. Lomax, 2004, The effect of velocity structure errors on double-difference earthquake location: Geophysical Research Letters, 31, L09602...

Research and application of near surface modeling in dual complex exploration areas

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

International Meeting for Applied Geoscience and Energy (IMAGE)

... complex surface structures with drastic spatial variations in velocity. This paper proposes a near surface modeling method based on surface wave...

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

Search and Discovery.com

... of first-arrival traveltime inversion was developed to estimate a near-surface velocity model for statics corrections in areas with complex geology...

Errors in the Use and Presentation of an Empirical Formula for the Settling Velocity of Spheres: DISCUSSION

N. C. Janke

Journal of Sedimentary Research (SEPM)

...Errors in the Use and Presentation of an Empirical Formula for the Settling Velocity of Spheres: DISCUSSION N. C. Janke 1971 Vol. 41 No. 4. (December...

Analytical Velocity Modeling for Offshore East Coast of India: An Approach Using VSP Time-Depth Dataset, #11036 (2018).

Nidhi Jindal, Anup K. Shahi, Kumar Hemant Singh

Search and Discovery.com

...Analytical Velocity Modeling for Offshore East Coast of India: An Approach Using VSP Time-Depth Dataset, #11036 (2018). Nidhi Jindal, Anup K. Shahi...

Full Waveform Inversion: Early Start of Model Building Process to Resolve the Complex near Surface Model in the Exmouth Sub-Basin, North West Shelf Australia

Lianping Zhang, Haryo Trihutomo, Yuelian Gong, BeeJik Lim, Alexander Karvelas

Australian Petroleum Production & Exploration Association (APPEA) Journal

... velocity errors in the model. Adjustive FWI is designed to build the relationship between travel time shift and model error with instantaneous phase...

The Use of Modern 3D Seismic Data Processing Techniques, 5D Interpolation, and Anisotropic PSTM to Improve Existing 3D Data in South Louisiana Data—Pulling the Scales from our Eyes; New Truth from Existing Datasets

John Asma, John Stevens, Sukhdev Hyare, Dave Spaulding

GCAGS Transactions

... in recording and the diligence of the field crew, errors can creep into the data logs. Even digital systems which capture some metadata often relied...

Abstract: Uncertainty in Surface Microseismic Monitoring, by Mueller, Michael C. and Thornton, Michael; #90166 (2013)

Search and Discovery.com

3D Seismic Proves Its Value in Bakken Geosteering, #41435 (2014).

Angie Southcott

Search and Discovery.com

... well costs in the Williston Basin. Geosteering errors in the basin were reduced by 90% from mid 2012 to early 2013. This impressive improvement...

Abstract: Recent Successes in FWI Deployment on Land-Data; #91204 (2023)

Moosa Al Jahdhami, Raya Al Kalbani, Ahmed Al Obeidi, Ahmed Al-Harthi

Search and Discovery.com

... provided another improvement to inverted model. A tomographic velocity model update was also performed to rectify residual velocities errors...

Size Analysis of Silt and Clay by Hydrophotometer: DISCUSSION

C. R. Tilly

Journal of Sedimentary Research (SEPM)

..., in the article there are some errors in calculation detected by the writer in the course of his study of pumiceous sediments. This article points out...

Delineation of a Thin Sandstone Reservoir Using Seismic Lithologic Modeling in the Taber-Turin Area, Alberta

Tom Guidish and Marc DeBuyl

AAPG Special Volumes

... in errors in velocity estimation. Based on a quantitative study of the above results (DeBuyl and Guidish, 1986) the magnitude of the error...

Seismic Time to Depth Conversion and Uncertainty Analysis for Horizon Prediction in a Proposed Well-Site of Sungai Gelam Field, Jambi Subbasin

Muhamad Wildan P., Imam Muda Gunawan, Andry Pujiriyanto, Sudarmaji

Indonesian Petroleum Association

... methods clustered into two groups of methods. The difference in those methods lies on the variation of velocity model building. The velocity model...

Velocity as a Problem in Mississippi

R. R. Phillips

GCAGS Transactions

...Velocity as a Problem in Mississippi R. R. Phillips 1951 Vol. 1 (1951), Variations in velocity have resulted in serious velocity problems...

Structural Uncertainty Study: An Example From Sisi Nubi Fields

Rangga A. Brahmantio, Cepi M. Adam, Arnaud Laffaure, Emmanuel Chavanne, Noor Syarifuddin

Indonesian Petroleum Association

... model is to apply “well removal” method. A temporary velocity model is built by excluding one particular well as a kind of “blind test” to have errors...

AAPG Memoir 76, Chapter 19: The Future of Pressure Prediction Using Geophysical Methods

Alan R. Huffman

AAPG Special Volumes

.... Small timing errors inherent in picking each event can cause significant uncertainty in the interval velocity where the total time separation...

Abstract: Advantages and Disadvantages of Array Depth Placement and Longer Toolstring Apertures; #90187 (2014)

N. Verkhovtseva and J. Shaffner

Search and Discovery.com

... are a helpful tool in order to decide on the most suitable toolstring for a project. Based on the observation well availability, velocity structure...

Analysis of Error of Seismic Structural Constructions by Comparison with Drilling Data in the Samotlor Field

N. Ya. Kunin, T. B. Krasil’nilova

Petroleum Geology: A Digest of Russian Literature

... is normal, i. e., the number of errors decreases with increase in their size, and errors of different sign are equally probable. Fig. 2b is the integral...

S-wave velocity prediction using a deep learning scheme and attention mechanism

Gang Feng, Wen-Qin Liu, Zhe Yang, Wei Yang, Jian-Hua Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

...S-wave velocity prediction using a deep learning scheme and attention mechanism Gang Feng, Wen-Qin Liu, Zhe Yang, Wei Yang, Jian-Hua Wang S-wave...

Providing In-Depth Knowledge

Halfdan Carstens

GEO ExPro Magazine

... offshore Norway shows a regional velocity cube intersecting a Base Cretaceous time map. The horizontal velocity slice is at 6,000ms. Two vertical...

Abstract: Uncertainty in Surface Microseismic Monitoring; #90187 (2014)

Michael Thornton, Mike Mueller, and Leo Eisner

Search and Discovery.com

... the sensitivity to velocity model assumptions. Furthermore, these arrays are well disposed for permanent monitoring of multiple wells. The primary...

Uncertainty in Surface Microseismic Monitoring; #41258 (2013)

Mike Mueller, Michael Thornton, and Leo Eisner

Search and Discovery.com

... the sensitivity to velocity model assumptions. Furthermore, these arrays are well disposed for permanent monitoring of multiple wells. The primary...