Design of the Acoustic Zoom Method for Non-Specular Backscatter Imaging of the Eagle Ford Formation, #41495 (2014).

J. Guigne, S. Azad, C. Clements, A. Gogacz, W. Hunt, A. Pant, J. Stacey

Search and Discovery.com

...figuration. Figure 2: A plan view of the final geophone positions for the Acoustic Zoom array shows the 16 lines and full azimuthal coverage at 22.5 degree...

Integration of Seismic and Log Data of a Deep Borehole in the Basement Rocks of Northeastern Alberta; #41517 (2015)

Judith Chan, Douglas R. Schmitt

Search and Discovery.com

... tube waves (Figure 4). Data quality becomes increasingly poorer as depth increases due to the poor geophone coupling to the borehole wall in an open hole...

Multi-Component Digital Receivers: Comparison of Subsurface and Conventional Surface Datasets; #41566 (2015)

Tagir Galikeev, Jason Criss, Vince Rodych

Search and Discovery.com

... accelerometers over conventional geophone array are:    Self-orienting to the vertical (ensures high degree of repeatability in 4D) Point-receiver...

Maximum-Likelihood-Estimation Stacking; #41575 (2015)

Stewart Trickett

Search and Discovery.com

... with shot noise, environmental noise at the geophone, and recording noise (spikes and clipping). Even background noise, which is Gaussian in time, may be non...

VSP Lookahead of the Bit Information: Considerations and Accuracy Analysis, #42196 (2018).

P. Ranjan, M. Khaitan, S. Chandrasekhar, Basant Kumar

Search and Discovery.com

.... The natural frequency of a conventional moving coil geophone, such as the SM4 type, is limited to 10 or 14 Hz. The GAC sensor has a flat frequency response...

Some Seismic Instantaneous Bandwidth Attribute Applications; #42515 (2020)

Satinder Chopra, Kurt J. Marfurt

Search and Discovery.com

... the amplitudes of the measured spectral components are consistent, because of differences in vibrator sweeps and geophone responses, some surveys...

Validating Conductive Fracture Imaging With Cross-well Strain and Permanent Fiber Optic Flow Profiling

Scott Taylor, Anton Reshetnikov, Anna Nazarova

Unconventional Resources Technology Conference (URTEC)

... benchmark CFI results with direct in-well DAS and DSS fibre optic measurements. CFI can be applied to any downhole geophone or distributed acoustic sensing...

Harmonic distortion discussion on seismic vibrators at low frequencies

Zhouhong Wei, Wang Rong, Liang Fuhe, Jason Criss

International Meeting for Applied Geoscience and Energy (IMAGE)

... frequencies. Figure 1. A servo-valve assembly mounted on a seismic vibrator. Baeten et al. (2010) used downhole geophone placed at a depth of 1-km...

Chapter 3: Preparation of Seismic Data for Stratigraphic Work

Tom Wittick

North Texas Geological Society

... and actually measure the seismic signature by putting a special geophone at the surface near a dynamite shot when it is fired. Because the signal is so...

Joint OBN and 3D DAS-VSP data acquisition and processing in East China Sea

G. Yu, G. M. He, Z. L. Cao, H. B. Liu, J. J. Li, Y. Z. Chen, J. J. Wu, J. G. Li, X. M. Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

... is increasingly recognized as a viable alternative to geophone arrays for downhole seismic data acquisition (Chen et al, 2012). This paper introduces the 3D...

Transition–Zone Seismic Surveys in Southeast Asia

R. E. Sheriff, Palmer L. Greene, Harold Reaves

Indonesian Petroleum Association

.... Crooked-line processing accepts survey information, calculates the locations midway between the source and each geophone group, and plots these on a map...

Illuminating Resolution

Paul Wood

GEO ExPro Magazine

... count of 150,000, though it is scalable beyond this if required. At each receiver, a GAC (Geophone Acceler- WesternGeco their novel Ramform designs...

Preparation of Seismic Data For Stratigraphic Work

Abilene Geological Society

... signature by putting a special geophone at the surface near a dynamite shot when it is fired. Because the signal is so strong this technique requires...

Noise analysis and ML denoising of DAS VSP data acquired from ESP lifted wells

Ge Zhan, Yao Zhao, Cheng Cheng, Josef Heim, Weihong Fei, Mike Craven, Scott Baker, Gilles Hennenfent

International Meeting for Applied Geoscience and Energy (IMAGE)

... conventional geophone VSP surveys, as they provide most of the value of a geophone VSP acquisition for 3D imaging and 4D monitoring in the vicinity...

Estimating Rayleigh surface wave from ambient noise recorded by distributed acoustic sensing (DAS) dark fiber array in the city

Rafa Czarny, Tieyuan Zhu

International Meeting for Applied Geoscience and Energy (IMAGE)

... motions. However, in the case of DAS, the sensor is not the geophone but fiber optic cable. Nowadays, urban areas are densely covered by pre-existing...

Application of Shallow Seismic Reflection in Geoenvironment and Geoengineering Mapping

Umar Hamzah, Abdul Rahim Samsudin, Abdul Ghani Rafek

Geological Society of Malaysia (GSM)

... used for the data acquisition. Mter each recording, the source and all geophones are shifted by a distance of one geophone position to produce...

Developments in Diagnostic Tools for Hydraulic Fracture Geometry Analysis

Paul Webster, Barbara Cox, Mathieu Molenaar

Unconventional Resources Technology Conference (URTEC)

... redundancy and the ability to interrogate with different instrumentation simultaneously. DAS data differs from Geophone data in a few ways. First, fibers...

Nimble Nodes

Amine Ourabah

GEO ExPro Magazine

... (Howe et al., 2008). The receiver side however, which often uses geophone arrays, or bulky and expensive nodes, has lagged behind, slowing down...

2D Pre-Stack Depth Migration : Application to Inverted Grabens

C. Bunks, P. L. Pichon, L. Ben Brahim, Sekar Sakti

Indonesian Petroleum Association

... an in house 2D pre-stack depth migration and velocity analysis program called MIGPACK. MIGPACK performs finite-difference migration in the source geophone...

Pressure prediction using converted shear waves from OBN data: A rock physics approach

Prajnajyoti Mazumdar, Kevin Searles, Bjorn Olofsson, James Gaiser, Terence Krishnasami

International Meeting for Applied Geoscience and Energy (IMAGE)

... component of geophones and hydrophones. However, S-waves also get recorded (as converted PS-waves) on all the three geophone components depending...

2D Seismic Refraction Tomography Survey on Metasediment at a Proposed Development Site in Dengkil, Selangor

Umar Hamzah, Abd Rahim Samsudin

Geological Society of Malaysia (GSM)

... residual soil. The P and S seismic survey have been carried out along severel lines across boreholes in the study area. Offset and geophone spacing used...

Estimating Stimulation-Zone Anisotropy Effects During Microseismic Monitoring

Martin Karrenbach, Steve Cole, Victor Yartsev

Unconventional Resources Technology Conference (URTEC)

... shear wave velocity. The values are plotted as a percentage and extend over a considerable area in depth. The geophone array extent in depth...

A new system for efficiently acquiring vertical seismic profile surveys

Tim Dean, Nghia Nguyen, Brenton Armitage, Huw Rossiter

Petroleum Exploration Society of Australia (PESA)

... pressure ratings (e.g. 300 m water depth) and are deployed as a single sonde. The cable typically require a pair of wires for each geophone, as well...

Illuminating geothermal reservoir structure: DAS microseismic imaging at Utah FORGE

Yuanyuan Ma, Jonathan Ajo-Franklin, Michal Chamarczuk, Jeremy Patterson, Ismael Vera Rodriguez, David Podrasky, Thomas Coleman, Carlos Maldaner

International Meeting for Applied Geoscience and Energy (IMAGE)

... for direct surveillance of fracture extent and geometry. A thorough comparison of DAS and geophone for microseismic monitoring in the FORGE site...

High Resolution Seismic and the Search for the Subtle Trap

James A. Wells

West Texas Geological Society

... sweeps, and good phase lock and ground coupling control. Remote digitizing of individual geophone groups allows the transmission of data to the recorder...