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The AAPG/Datapages Combined Publications Database
Showing 1,682 Results. Searched 200,673 documents.
Abstract: A Ray+Waveform Inversion for the Potency Tensor; #90187 (2014)
Scott Leaney and Chris Chapman
Search and Discovery.com
...ng the generalized inverse, , computed using a complex SVD routine. The inversion process can be viewed as vector beam-forming, or least-squares tim...
2014
Permeability Evolution during Deformation of Siliciclastic Sandstones from Moab, Utah
O. Kwon, B. T. Ngwenya, I. G. Main, S. C. Elphick
AAPG Special Volumes
... four different effective confining pressures. The fitting was carried out using a nonlinear least-squares routine based on the Marquardt-Levenberg...
2005
Diagenesis of Sandstones at Shale Contacts and Diagenetic Heterogeneity, Frio Formation, Texas (1)
KEITH B. SULLIVAN and EARLE F. MCBRIDE
AAPG Bulletin
... are considered, a linear least-squares regression between secondary pores and intergranular pores results in a correlation coefficient of 0.5. Conversely...
1991
A general model for growth trajectories of linear carbonate platforms
Nicolas Goudemand,, Pulkit Singh, Jonathan L. Payne
Journal of Sedimentary Research (SEPM)
.... The observed trajectories of the platform margins with respect to time in each of these examples can be fitted using a nonlinear least squares fit (nls...
2020
Subsidence History of Australia's Southern Margin: Constraints on Basin Models
Kerry A. Hegarty , , Jeffrey K. Weissel , John C. Mutter
AAPG Bulletin
... at z = 0; and CK = characteristic depth (m). A least-squares exponential curve was fitted to the downhole porosity data, and compaction constants...
1988
An Efficient Iterative Algorithm for Hydraulic Fracture Geometry Characterization with Distributed Strain Data
Yongzan Liu, Lijun Liu, Tiankui Guo, Ge Jin
Unconventional Resources Technology Conference (URTEC)
... least squares-based iterative algorithm for simultaneous real-time inversion of fracture width and height in the vicinity of monitoring wells. The three...
2025
Characterisation of Reservoir Pressure and Temperature Impact on Diffusion Behaviour of Beetaloo Basin Shales
Nicholas Lupton, Regina Sander, Michael Camilleri, Zhejun Pan, Luke Connell
Unconventional Resources Technology Conference (URTEC)
... to changes in pressure can be observed in the uptake rate curves of Figure 3. A least-squares fit of the uptake rate using the unipore model allows...
2019
A Multiproxy Characterisation of Shale Brittleness in the Isa Superbasin, Northern Australia
Amber Jarrett, Adam Bailey, Lisa Hall, David Champion, Liuqi Wang, Ian Long, Tara Webster, Simon Webber, Jessica Byass, Stewart Gilmore, Ziqing Hong, Junhong Chen, Paul Henson
Unconventional Resources Technology Conference (URTEC)
... defined in Equation 5. Wurst and Cui (2018) recommend using the least-squares algorithm to model the mineralogy based on XRF by allocating different...
2019
Tiltmeter Mapping and Monitoring of Hydraulic Fracture Propagation in Coal: A Case Study in the Warrior Basin, Alabama
George A. Gazonas, Chris A. Wright, M.D. Wood
Rocky Mountain Association of Geologists
... at the injection depth (approximately 480 feet). The solution provided is the best in a least squares sense and can be visualized in azimuth-dip space...
1988
Depositional Processes at the Lower Wilcox Shelf Slope Transition Zone
Mariana I. Olariu, Hongliu Zeng
GCAGS Journal
... of sandstone thickness between surfaces of interest was achieved in PetraTM software and entailed the creation of a grid using the least squares method...
2023
Pressure Transient Behaviour of Naturally Fractured Reservoirs
Doddy Abdassah
Indonesian Petroleum Association
... combined with a non-linear, least squares regression technique to analyze the buildup data. Figure 22 shows the Horner plot of test C. Small insert...
1985
An Analysis of Crude-Oil Discovery Rate in Alberta
J. T. Ryan
CSPG Bulletin
... in this equation were determined by fitting it to both the recoverable and the oil-in-place data for the province with a nonlinear least-squares technique...
1973
Preliminary Geothermics of the Sedimentary Basins in the Yukon and Northwest Territories (60°N - 70°N) -- Estimates from Petroleum Bottom-Hole Temperature Data
J.A. Majorowicz, F.W. Jones, A.M. Jessop
CSPG Bulletin
... in 30 km 30 km square areas through the study region, average geothermal gradient values were estimated from least squares straight End_Page 40...
1988
Flow Interference Between Frac Clusters (Part 2): Field Example From the Midland Basin (Wolfcamp Formation, Spraberry Trend Field) With Implications for Hydraulic Fracture Design
Ruud Weijermars, Arnaud van Harmelen, Lihua Zuo
Unconventional Resources Technology Conference (URTEC)
... prototype well, the following parameters were obtained from a least squares fit on historic production: a = 1.1330 / month, m = 1.2765, q1 = 9773 Stb / month...
2017
A Semianalytical P/Z Technique for the Analysis of Reservoir Performance from Abnormally Pressured Gas Reservoirs
Ronald Gunawan, T. A. Blasingame
Indonesian Petroleum Association
... compressibility, a small steady-state aquifer, and/or steady-state shale water influx. For analysis, Bernard used a least squares approach to estimate...
2003
Advanced Joint Interpretation of Image Logs and Conventional Well Logs in Organic-Rich Mudrock Formations for Improved Formation Evaluation: Application to the Permian Basin
Andres Gonzalez, Sabyasachi Dash, Zoya Heidari
Unconventional Resources Technology Conference (URTEC)
... Using Texture Features. Computers and Geosciences 37 (4): 541-553. https://doi.org/10.1016/j.cageo.2010.08.008. Lloyd, S. 1982. Least Squares...
2020
Experimental and Numerical Simulation Using X-ray Photoelectron Spectroscopy (XPS) and PHREEQC for Geochemical Interaction Effect on ScCO2-EOR and Storage in Unconventional Reservoirs
Billel Sennaoui, Hui Pu, Nuri Oncel, Mohamed Lamine Malki, Samuel Afari
Unconventional Resources Technology Conference (URTEC)
... core-level spectra were analyzed with a least-squares minimization curve fitting program. In addition, elemental compositions of calcitic/dolomitic...
2023
Assessing Regional Oil and Gas Potential
D. A. White , R. W. Garrett Jr. , G. R. Marsh , R. A. Baker , H. M. Gehman
AAPG Special Volumes
.... Although the data base is small and the variations are large, we have made a least-squares fit of the annual growth rate versus cumulative growth...
1975
Littoral Transport in the Surf Zone Elucidated by an Eulerian Sediment Tracer Experiment
David B. Duane, William R. James
Journal of Sedimentary Research (SEPM)
... were converted to concentration and plotted versus time from injection. To provide an objective means of determining an asymptote for this data, a least...
1980
AAPG Studies in Geology 47: Geological Perspectives of Global Climate Change, Chapter 11 - The Search for Patterns in Ice-Core Temperature Curves
Davis, John C.; Bohling, Geoffrey C.
AAPG Special Volumes
... by least squares. This transformation does not alter the test results.) Figure 1...
2001
Carbonate Porosity Versus Depth: A Predictable Relation for South Florida
James W. Schmoker, Robert B. Halley
AAPG Bulletin
... can draw conclusions with basin-wide applicability. POROSITY VERSUS DEPTH Exponential Representation The least-squares exponential fit to the data...
1982
Yield Per Effort for Additions to Crude Oil Reserves in the Lower 48 United States, 1946-1989: Geologic Note (1)
CUTLER J. CLEVELAND and V. M. PENDLETON
AAPG Bulletin
... influences on YPE that were described previously. We take the natural logarithm of both sides of equation 3 and use ordinary least squares to estimate...
1992
The practice of graphical fluid-gradient interpretations of formation tester pressure data
Andrew Chen
AAPG Bulletin
... using ordinary least squares methods. A linear regression model assumes that a homogeneous reservoir fluid exists across the entire formation interval...
2014
The South East Asia Gravity Project: Papua New Guinea
D. C. Manton, J. D. Fairhead
Papua New Guinea (PNG) Petroleum Convention Proceedings
... by a least squares method to produce cor rections for each cruise. Thus systematic errors can be minimised and a unified data set created. Linking Land...
1993
Gravity Survey of the Guffey Volcanic Center, Thirtynine Mile Volcanic Field, Park County, Colorado
Gregory A. Wimpey, Mark Andrew Tinker
Bulletin of South Texas Geological Society
... density by applying a least-squares fit to groups of stations spanning clearly exposed rocks typical of the area and obtained a value of 2.64 g/cm3...
1991