Integration of Magnetic, Gravity and Geologic Data in Mapping Geologic Structures: A Case Study of a part of Lafiagi [Sheet 203], Southwestern Nigeria, #41737 (2015).

Kehinde A. Olawuyi, Bankole D. Ako, Gregory O. Omosuyi, Obasanmi A. Adelusi

Search and Discovery.com

... MontajTM and Rockwork15TM software. The 3-D Euler Deconvolution and 2-D Forward modeling and inversion of the acquired aero-magnetic and pseudo...

Predicting Hydraulic Fracture Injection Pressure Using Hybrid Model for Completions Optimization

Ruxin Zhang, Hardikkumar Zalavadia, Sathish Sankaran

Unconventional Resources Technology Conference (URTEC)

... 7. Sensitivity analysis for base model Scenario Description Base model BHP data without noise Effect of noise BHP data with noise Effect of...

Monitoring Hydraulic Fracture Flowback in the Permian Basin Using Surface-Based, Controlled-Source Electromagnetics

Drew Jones, Chester Pieprzica, Oscar Vasquez, Justin Oberle, Peter Morton, Santiago Treviño III, Mark Hickey

Unconventional Resources Technology Conference (URTEC)

... neighboring wells. The transmitted signal was a broadband pseudo-random binary sequence. To record the frac fluid response signal, we placed an array...

Observations of geophone spurious resonance

Steve Hearn, Shaun Strong, Andrew Kinmont

Petroleum Exploration Society of Australia (PESA)

... conventional 10 Hz geophones, and from 5 Hz and 10 Hz high-output nodal sensors. High-frequency noise sources, including high-voltage harmonics can...

Seismic Exploration in Railroad Valley, Nevada

John H. Vreeland, Bert H. Berrong

Rocky Mountain Association of Geologists

... on the bajada surface where it was impossible to drill the shotholes to the water showed nothing but random noise. LITHOLOGIES FROM VELOCITIES CONCLUSIONS...

Chapter 10-part 3: 3-D Depth Image Interpretation

William L. Abriel, Joseph P. Stefani, Robert D. Shank, David C. Bartel

AAPG Special Volumes

... the signal concepts, it is also important to understand coherent noise and how it should appear in depth-imaged data. The models and data examples shown...

New Developments in Acoustic Logging

J. Zemanek, D. M. Williams, R. L. Caldwell, C. L. Dennis, F. A. Angona

Indonesian Petroleum Association

.... In this way a running stack of the data is made and a minimum of √8 improvement in signal-to-noise ratio is obtained. If random noise such as "road...

Broadband Seismic Technology and Beyond: Part VI: Towards a Ghost-Free Solution

Lasse Amundsen, Martin Landrø, Eivind Frømyr

GEO ExPro Magazine

... solution in 2011: a time- and depth-distributed source using sub-sources operated at specific depths and time delays, attacking the source-ghost effect...

A New Method for Handling the Nugget Effect in Kriging

K. Krivoruchko, A. Gribov, J. M. Ver Hoef

AAPG Special Volumes

... practical distances between data and prediction locations; E((s)) = 0; C(h) = Cov((s),(s + h)) with C() = 0 (no nugget effect); t(s) is a white noise process...

Optimization of Horizontal Well Spacing Based on Stochastic Fracture Modeling

William C. Belfield

Rocky Mountain Association of Geologists

... characteristics of the fracture system. This, in effect, assumes that fracture spatial distribution is random. Later attempts to incorporate spatial...

Magnetotelluric Monitoring of Unconventional Energy Resource Development: Disruptive Technology or Damp Squib?

Graham Heinson

Petroleum Exploration Society of Australia (PESA)

...). The effect of hydraulic stimulation on the bulk resistivity at depth depends on a number of factors (Rees et al., 2016). These include the salinity...

Abstract: Migration Velocity Analysis of Incomplete Data Using LSPSM CIGs; #90174 (2014)

Abdolnaser Yousefzadeh, John C. Bancroft, and Gary F. Margrave

Search and Discovery.com

...ling rate is 2 ms. After adding %1 random noise, the data are decimated by removing %75 of the traces, randomly. Interval velocity Acquisition geometry...

Abstract: Interpolation Using Hankel Tensor Completion; #90187 (2014)

Stewart Trickett and Lynn Burroughs

Search and Discovery.com

... these elements (that is, by omitting their rows in the linear system) during each least-squares solution, so that they have no effect on the minimization. Why...

Tulip Field 3D Coil Shooting Survey„Preliminary Data Processing Results

Michele Buia, Riccardo Vercesi, Michelle Tham, Dmitry Nikolenko, Andreas Tyasbudi Waluyo, Swee Leng Ng

Indonesian Petroleum Association

... in this survey, to name a few: turn noise due to acquiring data while the vessel and cables were tracking continuously in circles, very severe multiple energy...

Illite/Smectite Diagenesis in the Beaufort-Mackenzie Basin, Arctic Canada: Relation to Hydrocarbon Occurrence?

J. Ko, R. Hesse

CSPG Bulletin

... Figure 9. Diagram showing the effect of geopressure on I/S diagenesis. Note that the transition from random to ordered I/S occurs at shallower depths...

Abstract: Interferometric Assessment of Clamping Quality of Borehole Geophones; #90224 (2015)

Yoones Vaezi and Mirko van der Baan

Search and Discovery.com

... electromechanical or magnetic devices in order for them to be in close contact with the surrounding formations so as to record the background noise...

Quantifying multiple source rock contributions to petroleum fluids: Bias in using compound ratios and neglecting the gas fraction

Andrew P. Murray and Kenneth E. Peters

AAPG Bulletin

... genetic classifications. Mixture deconvolution by alternating least squares regression of ratios can seriously underestimate the contribution of the gas...

Current Trends in Geophysics

H. E. Stommel, J. M. Graul

Indonesian Petroleum Association

... is desirable for the purpose of attenuating ground roll and other surface noise, what benefit derives from individual recording? Figures 7 and 8 provide...

Broadband 4D Seismic Provides New Level of Detail

Yulia Biryaltseva, Tor Vegar Mårdalen, Per-Harald Saure-Thomassen, Marta Wierzchowska, Anastasiya Tantsereva, Julien Oukili

GEO ExPro Magazine

... dataset without additional amplitude scaling (Figure 4, row 2) gives better amplitude discrimination of the 4D effect, lower background noise...

Chapter 12: Microseismic Monitoring in Early Haynesville Development

Peter M. Duncan, William B. Barker, Leo Eisner, Peter G. Smith, Kevin Smith, Sherilyn Williams-Stroud

AAPG Special Volumes

... and cementing the geophones in place. It was decided to conduct a noise fall-off test to pick an effective burial depth for the geophones. A test...

Abstract: Mineral Development and the Environment … A Geologist's Dilemma?

Chris M. L. Bowler

Geological Society of Malaysia (GSM)

... increasingly aware that the impacts of mining can have a lasting detrimental effect on the environmental systems and land use capabilitythis includes...

Abstract: Dynamically Constrained 4D Prestack Inversion, by T. Blanchard and P.D. Thore, #90188 (2014)

Search and Discovery.com

Abstract: Time-Lapse (4D) Seismic Monitoring - Expanding Applications; #90211 (2015)

Rob Staples, Jan Stammeijer, Scott Jones, Jon Brain, Frans Smit, and Paul Hatchell

Search and Discovery.com

... able to quantitatively monitor pressure injection signals, pressure depletion (compaction) signals, and in many cases, accurately separate the effect...

Rock Physics and Reservoir Characteristic of a Calcitic-Dolomitic Sandstone Reservoir

H. Morris, B. Hardy, E. Efthymiou, T. Kearney

Indonesian Petroleum Association

... of using a Sequential Gaussian Inversion over more conventional deconvolution style inversion methods. Rock physics provides the bridge between well...

Rock Physics and Reservoir Characterization of a Calcitic-Dolomitic Sandstone Reservoir; #41499 (2014)

H. Morris, E. Efthymiou, B. Hardy, T. Kearney

Search and Discovery.com

... data conditioning and highlighting some of the benefits of using a sequential Gaussian inversion over more conventional deconvolution style inversion...