Successful Strategies for Cost Reduction in Plug and Ball Seat Milling Operations

Don McClatchie, Jake Kardash, Lyndsey Thomas, Kevin, Lypkie

Unconventional Resources Technology Conference (URTEC)

... must be evaluated. Figure 3: Comparison of solids bed erosion rate using various fluid systems with identical annular velocity (Naik, 2015) 5 URTeC...

Fracture characterization at multiple scales using borehole images, sonic logs, and walkaround vertical seismic profile

Romain Prioul, Jeroen Jocker

AAPG Bulletin

... containing vertical fractures, that the fast shear-wave polarization direction is an almost linear function, which depends on the difference in the tangential...

Abstract: Automatic Velocity Model Building Using Waveform Inversion and Least Squares Reverse Time Migration; #90319 (2018)

Young Seo Kim, Ali Almomin, Yimin Sun, Woodon Jeong, Yi Luo

Search and Discovery.com

...Abstract: Automatic Velocity Model Building Using Waveform Inversion and Least Squares Reverse Time Migration; #90319 (2018) Young Seo Kim, Ali...

A Method for Calculating Pseudo Sonics from E-Logs in a Clastic Geologic Setting

Joe H. Smith

GCAGS Transactions

... be computed using a depth and lithology dependent scale function. INTRODUCTION Several methods for creating pseudo-sonic (DTP) logs have been proposed...

Abstract: Application of Acoustic Waveform Tomography to Marine Seismic Reflection Data Contaminated with Strong Guided Waves; #90187 (2014)

Rajesh Vayavur and Andrew. J. Calvert

Search and Discovery.com

... by using this starting velocity model from an initial assumed wavelet comprising a simple spike, as shown in Figure 2. The consistency of the source...

Acoustic Properties of Sediment on the Southern Tonga Platform as Determined from Seismic Sonobuoy Studies

Jonathan R. Childs

Circum Pacific Council Publications

.... Velocity of sound in water is highly propor­ tional to temperature, and velocity can therefore be computed as a function of depth. Figure 3 shows the profile...

Feasibility of Moment Tensor Inversion From a Single Borehole Data Using Artificial Neural Networks; #42212 (2018)

Oleg Ovcharenko, Jubran Akram, Daniel Peter

Search and Discovery.com

... of the network that minimizes a certain loss function. It has been proven in Ito (1992) that a non-linear perceptron with one hidden layer is able...

Geologically Based Pore Pressure Modeling: Reconciling Pressure vs. Depth Plots with Mud Weight Equivalent vs. Depth Plots

S. Shaker

Houston Geological Society Bulletin

... or washed-out borehole coincide with a change from a linear pressure gradient that normally increases with depth to an exponential gradient within sealing...

Australian Insights into Streamer Technology Innovations

Andrew Long

Petroleum Exploration Society of Australia (PESA)

..., - 20 -10 40 ;/~1\ v a m Depth - - 15m Depth Frequency (Hz) 60 80 100 I ~~ \I / I \ \V \ I 120 ....... 20 40 Particle Velocity...

Abstract: A Ray+Waveform Inversion for the Potency Tensor; #90187 (2014)

Scott Leaney and Chris Chapman

Search and Discovery.com

...e we adopt a Monte Carlo approach to study posterior uncertainties using the posterior covariance matrix from linear inverse theory. The...

Impact of Shear Velocity Estimation on Wellbore Stability, #42351 (2019).

Charles Otoghile, Chima Cyril Udeze

Search and Discovery.com

... the importance of having locally calibrated coefficients when using the Greenberg and Castagna equation to estimate shear velocity. Introduction The Greenberg...

Deltaic Depositional Processes in a Glacier-Fed Lake: A Model for the Fluvial/Lacustrine Interface

Jim Bogen

Special Publications of SEPM

... in the range of 0.0-0.25Vo and 0.0-0.1 Z V O , respectively, and allow another computer-generated drawing to decide the direction of the velocity. Using...

Explosion Seismology Studies of Active and Passive Continental Margins: Resources, Comparative Structure, and Eustatic Changes in Sea Level

B. Keller , B. T. R. Lewis , C. Meeder , C. Helsley , R. P. Meyer

AAPG Special Volumes

... travel times and this model was then converted into a density model using a linear relation between P velocity and density. Gravity anomalies computed from...

Seismic Stratigraphy — Lodgepole Play Examples

John A. Andrew

Montana Geological Society

... frequency by the estimated rock velocity. He also says that lateral resolution is a function of both wavelength and depth. Energy reflected...

Relation between dips of prestack time migrated and unmigrated data

Jagmeet Singh

International Meeting for Applied Geoscience and Energy (IMAGE)

... of just 0.35%. Using formula (3), we now try to figure out a way to revise the velocity if the formula is not satisfied. Figure 3 shows how migrated dip...

Abstract: Relationships Between Resistivity, Velocity and Depth in the Vøring Basin, Offshore Norway, by Lars B. Hubert; #90082 (2008)

Search and Discovery.com

Seismic impedance inversion via neural networks and linear optimization algorithm

Bo Zhang, Yitao Pu, Ruiqi Dai, Danping Cao

International Meeting for Applied Geoscience and Energy (IMAGE)

... University of Petroleum Summary Traditionally, seismic post-stack impedance inversion is implemented using linear optimization algorithms. Recently...

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user1

Search and Discovery.com

...) and reverse time migration (RTM)[1-2]. In comparison to velocity stack seismic sections, migration outcomes usually offer a more accurate positioning...

Quantification of pore structure and its effect on sonic velocity and permeability in carbonates

Ralf J. Weger, Gregor P. Eberli, Gregor T. Baechle, Jose L. Massaferro, Yue-Feng Sun

AAPG Bulletin

... estimated using Wyllie's time-average equation. Intervals from MiocenePliocene cores from the Great Bahama Bank with high positive velocity deviation...

Upside down Rayleigh-Marchenko imaging: an application to the Volve ocean-bottom cable data

Ning Wang, Matteo Ravasi

International Meeting for Applied Geoscience and Energy (IMAGE)

...l wave using a simple windowing function. Moreover, possible velocity changes in the water column and the unknown source wavelet make it challengin...

Reservoir R factor estimation using 4D time-shifts induced by compaction at the Shearwater field, North Sea

Alejandro Jaramillo, Maria Mangriotis, Colin MacBeth

International Meeting for Applied Geoscience and Energy (IMAGE)

... based on the HBR model which assumes a linear relationship between velocity changes and strain. How to best constrain the R factor is an active topic...

Abstract: Reverse Time Migration of Prestack Elastic Data; #90224 (2015)

R. Ferner and M. D. Sacchi

Search and Discovery.com

... operations producing RPw (x, z), RSw (x, z). Concurrently, the source k k P function for each shot k was forward propagated through the smooth velocity model...

An Interpreter's Guide to Improvements in Depth Imaging Through Model-Based Velocity Estimation and Refinement

Andy Furniss

Indonesian Petroleum Association

.... There are several approaches that can be taken to improve our predictions in the depth domain, from simply improving our initial velocity models using...

Geoscience Integration and Interpretive Model Building to Overcome Seismic Imaging Problems in Foothills Environments; #41547 (2015)

Rob Vestrum

Search and Discovery.com

... to depth for comparison. (b) Anisotropic depth migration using simple structural velocity model. (c) Anisotropic depth migration using revised...

ABSTRACT: Stochastic Modeling of Seismic Velocity Fields; #90013 (2003)

David Geraets, Paolo Ruffo, Alain Galli

Search and Discovery.com

... model of an instantaneous velocity field, as a function of the acquisition lay-out used to obtain the seismic data and of the experimental variogram...