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Showing 2,007 Results. Searched 200,616 documents.
Robust Event Recognition in Real-Time Hydraulic Fracturing Data for Live Reporting and Analysis
Samid Hoda, Jessica Iriarte
Unconventional Resources Technology Conference (URTEC)
... difference of a discrete-time signal is easier than calculating a derivative: given a signal (𝑦𝑦[0], 𝑦𝑦[1], . . . , 𝑦𝑦[𝑛𝑛]) the first-order difference...
2020
Upscaling two-phase flow in naturally fractured reservoirs
Stephan K. Matthai, Hamidreza M. Nick
AAPG Bulletin
... incorporation into field-scale models. Macroscopic laws capturing their integral effects on multiphase flow are required.Numerical discrete fracture...
2009
Feasibility of limestone reservoirs as a carbon dioxide storage site: An experimental study
Arshad Raza, Raoof Gholami, and Mohammad Sarmadivaleh
AAPG Bulletin
... oven in which the temperature is controlled by a proportional-integral-derivative controller module. Three fans in the oven are used to ensure...
2020
Degree of Advancement of Petroleum Exploration in United States
M. King Hubbert
AAPG Special Volumes
..., is the quantity of crude oil produced per year, and its integral, the cumulative production. The general properties of the curve of the production rate, dQp...
1968
Three-Dimensional Numerical Modeling of Deltas
Irina Overeem, James P.M. Syvitski, Eric W.H. Hutton
Special Publications of SEPM
... at this rather coarse resolution, already the stored data volume adds up to ~ 23 Mb. The data volume should allow other derivative properties, like...
2005
Degree of Advancement of Petroleum Exploration in United States
M. King Hubbert
AAPG Bulletin
..., and its integral, the cumulative production. The general properties of the curve of the production rate, dQp/dt, plotted against time, are known...
1967
Basement Structure Offshore Dahomey Basin, Nigeria: New Insights from Aeromagnetic and 3D Seismic Interpretation
Eze Okoro, Jibrin Babangida, Mosto Onuoha
International Meeting for Applied Geoscience and Energy (IMAGE)
...-resolution aeromagnetic (HRAM) and 3D seismic data. Edge detection filtering including first vertical derivative (FVD), tilt derivative (TDR) and total...
2021
In-House Python Application for DFIT Type Curves Analysis, Applied to Vaca Muerta Formation
Sebastián Heine, Cristian González
Unconventional Resources Technology Conference (URTEC)
..., 2019, and others). In addition to the usual and popular semi-log derivative (Δt dΔp/dΔt) and Bourdet derivative (ΔteR dΔp/dΔteR), this application...
2023
Pressure Transient Testing for Pattern Waterflood Design
Gardner W. Walkup Jr.
Indonesian Petroleum Association
..." for evaluation purposes. Notice that the acoustic device matches the diagnostic derivative plot quite well. The PSI data did not match the strain gauge data...
1991
Applying Integrated Workflow of Pressure and Rate Transient Analysis in Early Life of Deepwater Gas Condensate Field
Rinenggo Nugroho, Yan Pan, Antonius D. Arinto, Komaruddin E.P, Robikhun
Indonesian Petroleum Association
... and Analysis Before starting analysis/matching process, build up pressure and the derivative were diagnosed to identify several flow regimes captured during...
2018
Generalization of Butterfly Models to Multi-Well and Enhanced Geothermal Systems
Jorge A Acuña, Vincent Artus
Unconventional Resources Technology Conference (URTEC)
...=0.3, with an established slope a = (1 − d) = 0.7 clearly visible on the semi-log derivative (Figure 9). In this and all following diagnostic plots...
2024
Estimating Stage-by-Stage Reservoir and Fracture Properties Using the Post-Fracture Pressure Decay Technique
Wannees Alkhayyali, Mei Han, Christopher R. Clarkson
Unconventional Resources Technology Conference (URTEC)
... can be identified (using pressure derivative methods) for MFHWs. The objective of this work is to describe and apply methods used to identify...
2025
Plate Tectonics and Sandstone Compositions
William R. Dickinson , Christopher A. Suczek
AAPG Bulletin
.... We classify all provenances and derivative sandstone suites into three general groups: (1) continental block, for which sediment sources are on shields...
1979
Theory and Applications of Time Series Analysis to Wireline Logs: Chapter 5
John H. Doveton
AAPG Special Volumes
... to be a good representation of the trend in the Th/U log. Its equation is given by: [EQUATION] From basic calculus concepts, the first derivative...
1994
Priority A-1-a: 100-Octane Aviation Fuel and the Erath Cycling Plant
Tonja Koob Marking
Petroleum History Institute
.... By 1936, Louisiana was fourth in oil and natural gas production among all states. By the late 1930s, operators made gas discoveries in about 10,000-ft...
2023
Secondary Current of Saline Underflow in a Highly Meandering Channel: Experiments and Theory
Jorge D. Abad, Octavio E. Sequeiros, Benoit Spinewine, Carlos Pirmez, Marcelo H. Garcia, Gary Parker
Journal of Sedimentary Research (SEPM)
... et al. (1976) is formulated in terms of the derivative of (14) with respect to z, however, the derivative of the superelevation term vanishes...
2011
A Modified Approach For Modeling 2-Phase Flowback From Multi-Fractured Horizontal Shale Gas Wells
Jesse Williams-Kovacs, Christopher Clarkson
Unconventional Resources Technology Conference (URTEC)
... stimulated with multiple hydraulic fracture stages. Operators are seeking new methods to characterize hydraulic fractures generated during stimulation...
2015
Simultaneous waveform inversion of seismic-while-drilling data for P-wave velocity, density, and source parameters
Jinji Li, Scott Keating, Nasser Kazemi, Roman Shor, Kristopher A. Innanen
International Meeting for Applied Geoscience and Energy (IMAGE)
...iable 𝒇& that controls the moment tensors of a point source. The derivative of the objective function with respect to such a variable is an extension of the deriv...
2022
Production and Reservoir Property Determination Using Integrated Pressure Measurement Techniques
W. Douglas Morgan, Manfred J. Wittmann, Bruno J. Deruyck
Indonesian Petroleum Association
... Oil, May 1983. Bourdet, Azoub and Pirard, 1984. "Use of Pressure Derivative in Well Test Interpretation". SPE 12777, April 1984. Earlougher, R.C. Jr...
1987
Fault identification in SE Limerick basin (Ireland) using a multi-geophysical data integration and unsupervised machine learning approach
Prithwijit Chakraborti, Aline Melo, Eoin Dunlevy
International Meeting for Applied Geoscience and Energy (IMAGE)
...). The data layers consist of total horizontal gradient, first vertical derivative, and tilt derivative of the residual gravity and of the reduced to pole...
2022
A New Method for Production Data Analysis and Well Testing Using Superposition-Rate
Peter Liang, Roberto Aguilera, Louis Mattar
Unconventional Resources Technology Conference (URTEC)
...e) for flow regime identification (Liang et al. 2011, Anderson and Mattar, 2003). Therefore, normalized pressure and derivative were plotted against boundar...
2016
Successful MDT Dual Packer Survey for Cut-Off Determination in the Abadi Field: Design, Execution, And Analysis
Deni Fitrio, Ricardo Oentoe, Masahiko Nomura
Indonesian Petroleum Association
... the equalization. The first longest build up data was selected for the pressure transient analysis. Figure 7 shows the pressure derivative plot...
2016
Regional airborne gravity surveys in Western Australia: Considerations for the end user
Martin Bates, Stefan Elieff, Krista Kaski, David Howard, John Brett, Richard Lane
Petroleum Exploration Society of Australia (PESA)
..., gxx is the first derivative of the x or east component in the x direction gyy is the first derivative of the y or north component in the y direction gzz...
2019
Integrated RTA and PTA Techniques to Study Single Fracture Stage Performance
Ahmed Farid Ibrahim, Mazher Ibrahim, Matt Sinkey, Tom Johnston, Wes Johnson
Unconventional Resources Technology Conference (URTEC)
... estimated skin factor (the difference between the pressure and its derivative curves) in the complex system. While in the case of lower permeability...
2020
Hydraulic Fracture Closure Revealed Under Controlled Laboratory Conditions
Mohsen Talebkeikhah, Brice Lecampion
Unconventional Resources Technology Conference (URTEC)
... the red curve is the corresponding derivative. The dashed lines indicate the points where fracture closure or applied confining stress occurs...
2024