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The AAPG/Datapages Combined Publications Database
Showing 34,490 Results. Searched 200,663 documents.
Multi-attributes and Seismic Interpretation of Offshore Exploratory Block in BahrainA Case Study, #41919 (2016).
Suresh Thampi, Aqeel Ahmed, Yahya Al-Ansari, Ali Shehab, Ahmed Fateh, Anindya Ghosh, Ghada Almoulani
Search and Discovery.com
... in some levels where the signal quality was found to be of acceptable level. In other levels the impedance contrast was not good due to remnant noise...
2016
Challenges of Sub-Thrust Imaging Using Broadband Three-Dimensional Seismic Data: a Case Study in the Outer Banda Arc, Indonesia
Masamichi Fujimoto, Yonghe Guo, Anky Fatwa, Yuki Sasaki
Indonesian Petroleum Association
... of seismic energy to image deep structures and low signal-to-noise ratios in entire sections due to a lack of source energy, severe multiple energies from...
2014
The 1986 PESA Australian Distinguished Lecture: Years of Dramatic Change the Growth in Expertise in Australian Oil Exploration 1950 1986
Murray H. Johnstone
Petroleum Exploration Society of Australia (PESA)
... the signal• to-noise ratio of the recorded signal (Fig. 1) . Some of these have been designed to handle specific Australian conditions such as the arid dune...
1987
NMR Wettability Index Measurements on Unconventional Samples
Michael Dick, Dragan Veselinovic, Derrick Green, Aimee Scheffer-Villarreal, Ronald Bonnie, Shaina Kelly, Kathleen Bower
Unconventional Resources Technology Conference (URTEC)
...) 750 750 3000 750 18750 22500 Signal to Noise Ratio 200 200 200 200 164 236 Tau (µs) Number of Echoes 50 50 50 50 50 50 5000 5000 20000 5000 125000...
2019
Novel Techniques to Measure Oil-Gas Diffusion at High Pressure & High Temperature Conditions: Application for Huff-n-Puff EOR in Shale
Sanchay Mukherjee, Son Thai Dang, Chandra Rai, Carl Sondergeld
Unconventional Resources Technology Conference (URTEC)
... coefficient can be calculated. However, with the fluctuation in the data, due to NMR signal-to-noise, the integral of HI profile is used to better...
2020
The Tetrahedron as a Facies Mapping Device
W. C. Krumbein
Journal of Sedimentary Research (SEPM)
... of four faces. In addition to point projections, the tetrahedron may be sliced along percentage planes, ratio planes, or combinations of the two to provide...
1954
Unconventional Shale Pore System Characterization in El Trapial Area, Vaca Muerta, Argentina
Luisa Crousse, Sergio Cuervo, Dolores Vallejo, Laurent Mosse, Timothy Fischer, Douglas McCarty
Unconventional Resources Technology Conference (URTEC)
... of investigation and a robust signal-to-noise ratio (McKeon 1999). The acquisition sequence was optimized for shale logging with enhanced precision mode (Hook...
2015
Mapping Stratigraphic Traps with Electrical Transients
Jamil Azad
CSPG Bulletin
... if very weak anomalies are being mapped; otherwise a repeatability of three to five points is satisfactory, since it ensures a signal-to-noise ratio...
1977
No large bias within species between the reconstructed areas of complete and fragmented fossil leaves
Eric R. Hagen, Dana L. Royer, Ryan A. Moye, Kirk R. Johnson
PALAIOS
... sampling effort the magnitude of the size bias tends to diminish (Fig. 6), suggesting a signal:noise problem with results based on fewer leaves. In sum...
2019
Optimization of Infill Drilling in Naturally Fractured Tight Gas Sandstone Reservoirs in the San Juan Basin - Workshop Summary
Lawrence Teufel, Scott Cooper, John Lorenz, Bruce Hart, Robin PEarson, Hamoud Al-Hadrami, Her-Yuan Chen, Arild Sunde, Mike Kelly
PTTC
... to geometries of the original surveys, low signal-to-noise ratios, coherent noise and seismic thin beds. In analyzing the data, the seismic data were separated...
2000
Magnetotelluric Monitoring of Unconventional Energy Resource Development: Disruptive Technology or Damp Squib?
Graham Heinson
Petroleum Exploration Society of Australia (PESA)
... at frequencies lower than 0.1 Hz, whereas the phase has maximum difference between 1 and 0.1 Hz. This is the MT dead-band of low signal, which introduces noise...
2016
Impacts of hydrothermal dolomitization and thermochemical sulfate reduction on secondary porosity creation in deeply buried carbonates: A case study from the Lower Saxony Basin, northwest Germany
Bianca C. Biehl, Lars Reuning, Johannes Schoenherr, Volker Lüders, and Peter A. Kukla
AAPG Bulletin
...–nitrogen (N2)–bearing inclusions were measured 3 × 60 sec to improve the signal-to-noise ratio. The carbon isotopic compositions of CH4 and CO2...
2016
Milankovitch Period Uncertainties and Their Impact On Cyclostratigraphy
David Waltham
Journal of Sedimentary Research (SEPM)
.... Meyers, S.R., Sageman, B.B., and Pagani, M., 2008, Resolving Milankovitch: consideration of signal and noise: American Journal of Science, v. 308, p...
2015
Getting more from microseismic data by asking less of it
David Rampton
International Meeting for Applied Geoscience and Energy (IMAGE)
... recording. Note that only panel E shows an event with clear p-wave and shear modes. Very weak events even with noise can be picked for event depth in panels B...
2024
Using Hybrid Models for Unconventional Production Opportunities and Value Generation - Case Studies
Hardikkumar Zalavadia, Trevor Stoddard, Utkarsh Sinha, Andrew Corman, Sathish Sankaran
Unconventional Resources Technology Conference (URTEC)
..., by picking a representative stable period to sample the specific gravities and initial production gas-oil ratio (for oil wells). Then, a non-parametric...
2022
Vertical Seismic Profiling--A Measurement that Transfers Geology to Geophysics: Chapter 2
B. A. Hardage
AAPG Special Volumes
... by a study well. This requirement can be satisfied only if the VSP data have adequate signal-to-noise character, which they usually do if a properly sized...
1985
A Workflow for Flowback Data Analysis Creating Value out of Chaos
Obinna Ezulike, Hassan Dehghanpour
Unconventional Resources Technology Conference (URTEC)
... (rate-normalised-pseudo-pressure vs. time) with proposed FAM. The low signal to noise ratio in the early 60 hours in Fig. 9 could be a result...
2014
Nuclear Magnetic Resonance Estimation of Petrophysical Properties and Evaluation of Hydrocarbon Huff-and-Puff Gas Injection in Lower Eagle Ford Shale Oil Samples
Sherifa Cudjoe, Iman Oraki, Reza Barati, Jyun-Syung Tsau, Chi Zhang, Brian Nicoud, Kyle Bradford, Amanda Baldwin, David Mohrbacher
Unconventional Resources Technology Conference (URTEC)
.... NMR T2 distributions were measured using 100 µs echo spacing (TE), 2000 – 15000 ms polarization time, 300 signal to noise ratio (SNR), and 2000...
2019
Quartz Grain Orientations--1 (The Photometric Method)
R. F. Sippel
Journal of Sedimentary Research (SEPM)
.... The former might be thought of as signal, and the latter as noise. Notice that the signal-to-noise ratio for the optimum photometer is monotone decreasing...
1971
Investigation of Created Fracture Geometry through Hydraulic Fracture Treatment Analysis
Ibraheem A. Ahmed, Christine Ehlig-Economides
Unconventional Resources Technology Conference (URTEC)
... to record microseismic events. They URTeC 1574483 2 noted that background noise can introduce a high degree of variability in the microseismic events...
2013
Effect of Mineralogy on NMR, Sonic, and Resitivity: NMR, Sonic, and Resistivity: A Case Study of the Monterey Formation
Saul Rivera, Manika Prasad
Unconventional Resources Technology Conference (URTEC)
..., sample 8333 does not have the same distribution as the rest of the samples. This is due to the fact that it has a low signal to noise ratio. Sample...
2014
Assessing spatial uncertainty in reservoir characterization for carbon sequestration planning using public well-log data: A case study
Erik R. Venteris, Kristin M. Carter
Environmental Geosciences (DEG)
... modeling. The ratio of the partial sill to the nugget effect provided information on the strength and consistency of spatial autocorrelation within...
2009
NMR Time-Lapse Wettability Assessments in Unconventionals: Insights from Imbibition
S. Kelly, R. J. M. Bonnie, M. J. Dick, D. Veselinovic
Unconventional Resources Technology Conference (URTEC)
... Wait Time (TW) (ms) 750 750 3000 750 750 750 18750 22500 Signal to Noise Ratio Tau (µs) Number of Echoes NMR Porosity (p.u.) or Volume (ml) P90...
2020
Effects on the precision of tomography near-surface model with single receiver
Baohua Yu, Yongguo Wu, Haili Wang, Faquan Feng, Quanbin Yang, Lixin Ma
International Meeting for Applied Geoscience and Energy (IMAGE)
.... The noise attenuation capacity of single receiver is lower than that of array receiver (Z. Yang, et al., 2022; C. Han et al., 2022), and its effect...
2024
Using 3mD Seismic to tmprove Definition of a Bighorn Basin Anticline, Badger Basin Field, Park County, Wyoming
Jerome P. Walker, Daniel D. Hollis, Kevin M. Revels, Kenneth L. Grubbs
Rocky Mountain Association of Geologists
...). Evaluation of the raw shot-records clearly pointed out that the signal-tonoise ratio would be a problem during processing. Cultural activity and random...
1995