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The AAPG/Datapages Combined Publications Database
Showing 1,826 Results. Searched 196,426 documents.
Application of the β-Derivative to Evaluate Multi-Fractured Horizontal Well Performance in Unconventional Shale Reservoirs
F. Anthony Jimenez, Thomas A. Blasingame
Unconventional Resources Technology Conference (URTEC)
... = Dimensionless pressure integral ppd = Primary pressure derivative ("Cartesian" derivative), psi/hr q = Flowrate, STB/D rw = Wellbore radius, ft R2...
2022
Abstract: On Choosing Differential Operators; #90171 (2013)
John C. Bancroft
Search and Discovery.com
... with the main emphasis placed on the first derivative, using a polynomial and spectrally derived approximations. The accuracy of the operators is compared using...
2013
Abstract: On Choosing Differential Operators; #90171 (2013)
John C. Bancroft
Search and Discovery.com
... with the main emphasis placed on the first derivative, using a polynomial and spectrally derived approximations. The accuracy of the operators is compared using...
2013
Finite Difference Modeling: Part I: Become Expert in Five Minutes
Lasse Amundsen, Ørjan Pedersen, Martin Landrø
GEO ExPro Magazine
... a little bit… derivative.” The history of calculus does not begin with the findings of the English mathematician and physicist Sir Isaac Newton (1642...
2018
The Utilization of the "Rate-Integral" to Assist with Decline Curve Analysis of Poor-Quality Unconventional Time-Rate Data
E. W. Bryan, D. Symmons, D. Ilk, T. A. Blasingame
Unconventional Resources Technology Conference (URTEC)
... integral-derivative," where these functions are defined as: pDi = 1 tD tD ò0 pD (t )dt pDid (tD ) = t D d pDi (tD ) dtD ("pressure integral...
2021
2008
Analysis of Multiple Flow/Buildup Tests Including a 5-year Buildup: Case Study of an Australian Shale Gas Well
Christopher R. Clarkson, Alexander Cote
Unconventional Resources Technology Conference (URTEC)
... to BU #1. Use of the integral of rate-normalized gas pseudopressure and its derivative further improves the derivative quality (Figure 11, right), without...
2022
Numerical Modeling of 1D Anomalous Diffusion in Unconventional Wells Using a Nonuniform Mesh
Ralf Holy, Erdal Ozkan
Unconventional Resources Technology Conference (URTEC)
... coefficient similar to Darcy’s permeability with field units of md. d1−α . ft β−1 . The time-fractional derivative ∂1−α 𝑓𝑓(𝑡𝑡)⁄∂t1−α is defined...
2017
ABSTRACT: A New Gradient Operator with Applications in Geophysics, by Alfaraj, Mohammed; Wang, Yuchun E.; Luo, Yi; #90141 (2012)
Search and Discovery.com
2012
Well Done as Activity and Discoveries Rebounded in 2022
PESA Staff
Petroleum Exploration Society of Australia (PESA)
... $100 per barrel, Rystad Energy research showed. Many shale operators offset their risk exposure through derivative hedging, helping them to raise capital...
2022
Characteristics of the Free Surface Multiple Attenuation Using Wave Field Extrapolation; #40504 (2010)
Patrícia P. Ferreira, Marco Antonio, Cetale Santos, and Luiz Landau
Search and Discovery.com
... attenuation is based on forward wave field extrapolation theoretical principles in which the one-way Rayleigh integral uses the input data as a prediction...
2010
Recognition of Subtle Features in Geologic Maps
J. E. Robinson, D. F. Merriam
CSPG Special Publications
... of noise. Operators such as downward continuation, derivative, and edge detection can be applied to digital geologic maps on shallow, well-documented...
1980
Abstract: Multi-Spectral Volumetric Curvature Adding Value to 3-D Seismic Data Interpretation, by S. Chopra and K. J. Marfurt; #90090 (2009).
Search and Discovery.com
2009
Predicting Estimated Ultimate Recovery from Flowing Material Balance Analysis Considering Rock and Connate Water Expansion for Unconventional Gas Reservoirs
Aykut Atadeger, Mustafa Onur, Leslie G. Thompson, Barry A. Ruddick
Unconventional Resources Technology Conference (URTEC)
... identification method is proposed. It is based on a log-log diagnostic plot of the derivative of rate-normalized pseudopressure change vs. sorted material...
2021
Characterization of Gas Reservoirs Using Production Data Analysis - Pre-Tertiary Basement Gas Reservoir, South Sumatra, Indonesia
Helmi Pratikno, Teddy H. Komaroedin, Taufan Marhaendrajana
Indonesian Petroleum Association
... integral-derivative functions to present data function with better resolution, as well as to account for variable-rate/variable pressure drop...
2005
Unsteady-state diffusion modeling of gas in coal matrix for horizontal well production
Jian-Chun Guo, Ren-Shi Nie, and Yong-Lu Jia
AAPG Bulletin
...-integral function () and its derivative () with dimensionless production time (); and are plotted using full lines and dashed lines, respectively. Rate...
2014
Abstract: A Phase Shift Plus Interpolation Extrapolation for Two-way Wave Equation Migration; #90172 (2014)
Jianhua Pan
Search and Discovery.com
... applied to downgoing wave and upgoing wave are different and the derivative of wavefield to depth needs to be calculated. A synthetic example presented...
2014
A hybrid deep learning network for tight and shale reservoir characterization using pressure and rate transient data
Hamzeh Alimohammadi, Hamid Rahmanifard, and Shengnan Nancy Chen
AAPG Bulletin
... integral derivative cumulative production. The performances of these architectures are compared, and the hybrid convolutional neural networks–long...
2022
Multispectral Volumetric Curvature Adding Value to3D Seismic Data Interpretation, #41540 (2015).
Satinder Chopra, Kurt J. Marfurt
Search and Discovery.com
... filter of the form kx (α-1) applied to a conventional first derivative. The space domain operators corresponding to different values of α mentioned...
2015
A Physically Consistent Decline Analysis Method for Unconventional Wells
Jorge A. Acuña
Unconventional Resources Technology Conference (URTEC)
... of the data and results in a noisy derivative for field data. The + : D !& procedure to reduce noise is by calculating the integral normalized...
2021
An Alternative BEM Modeling of Transient Pressure Response of Fractured Reservoir by Use of a Semi-Analytical Approach
Junlei Wang, Ailin Jia, Yunsheng Wei, Yadong Qi
Unconventional Resources Technology Conference (URTEC)
... the segment. Besides, both flow across the edge of fracture and fluid compressibility is negligible. Using the Fredholm integral equation (Cinco-Ley, 1978...
2019
Size Frequency Distributions of Sediments
W. C. Krumbein
Journal of Sedimentary Research (SEPM)
... with it an integral curve and a derivative curve. The integral curve is such that its ordinate at any point represents the area under the given curve up...
1934
Niobrara Oil Potential
Richard A. Harnett
Earth Science Bulletin (WGA)
... within an area to a first derivative map. The first derivative equals the slope, or dip. Then a second derivative map is constructed which shows...
1968
Pressure Buildup Interpretation in Unconventional Wells
Jorge A. Acuña
Unconventional Resources Technology Conference (URTEC)
... operators so it is becoming more important to review pressure buildup interpretation techniques. Discrepancies between buildups and drawdown...
2023
Optimizing the Development of a Stacked Continuous Resource Play in the Midland Basin
James Courtier, Joe Wicker, Travis Jeffers, Pat Curth
Unconventional Resources Technology Conference (URTEC)
..., allows for the development of a very high quality series of acoustic impedance inversion products and associated derivative attributes. Laredo has...
2016