Understanding the Spatial Geological Heterogeneity of the Delaware Basin from Pre-Stack Seismic Inversion

Simon Payne, Andrew Lewis, Ben Hardy, Venkatesh Anantharamu, Iestyn Russell-Hughes

Unconventional Resources Technology Conference (URTEC)

... were performed using the least squares matching technique (White, 1980). Good ties were observed with cross-correlation values greater than 80...

Inversion of Salt Diapir and Sedimentary Bed Observations: A Gulf Coast Case History

K. Petersen, I. Lerche

GCAGS Transactions

... is chosen that provides the best least squares fit to that criterion. The evolution is modeled only back to the time of deposition of horizon F due...

Dolomitization in Chalk from the North Sea Central Graben

Niels Oluf Jorgensen

Journal of Sedimentary Research (SEPM)

... by least-squares analyses of X-ray powder data obtained with a Guinier camera. Stable-isotope analyses were limited to bulk samples because the grain...

Pore Structure in Sandstones by Compressible Sphere-Pack Models

I. Fatt

AAPG Bulletin

... assumption must be considered as applying to an ideal porous medium to which sandstones may approach. Curve 1 in Figure 5 is the least squares fit...

Analysis of Hydrodynamic Factors in Petroleum Migration and Entrapment

Richard W. Davis

AAPG Bulletin

... on Figure 3. A least squares power regression equation was calculated for the data. The regression line, plotted on Figure 3, indicates...

AAPG/SEG Student Expo, September 16-17, 2013, Houston, Texas; - Abstracts, #90182 (2013).

Search and Discovery.com

Abstract: Azimuthal Fourier Coefficients: A Simple Method to Estimate Fracture Parameters; #90174 (2014)

Jon Downton and Benjamin Roure

Search and Discovery.com

... it in terms of cos(2) and sin(2) and thus be solved in a straightforward fashion using least squares inversion (Downton and Gray, 2006...

Abstract: Time-Lapse FullWaveform Inversion Application To Seismic Monitoring Of CO2 Sequestration; #90224 (2015)

Wubshet Alemie

Search and Discovery.com

... The inversion algorithm is derived in least squares sense by defining a cost function, which is a function of data residual (the difference between...

Abstract: Case Study- High Resolution Velocity Model Building to Improve Carbonate Reefs Image in Tz Area; #91204 (2023)

Hongjun Zhang, Yang Chen, Zhengzheng Zhou, Xiang Li, Hotma Yusuf, Haryono Haryanto, Farid Dasa Marianto

Search and Discovery.com

... modeled seismic data to recorded field data. The matching is quantified by the residuals of a least-squares misfit function, and the model update...

Forecasting the Domestic Utilization of Natural Gas in Nigeria (2015-2020); #70234 (2017)

Rita U. Onolemhemhen, Jumai J. Adaji, Sunday O. Isehunwa, Adeola Adenikinju

Search and Discovery.com

... for a short-term period, using an econometric methodology of ordinary least squares and an ARIMA model, it estimates the relationship between the variables...

Seismic Acquisition Optimization for Exploration in Thrust Belts and Foreland Basins; #42268 (2018)

Pedro Muñoz, Juan Uribe, Nestor Sanabria

Search and Discovery.com

... sampling acquisition to support data reconstruction. References Cited Herrmann, F.J., and X. Li, 2012, Efficient Least-Squares Imaging with Sparsity...

Thermal History of Michigan Basin

Karen Rose Cercone

AAPG Bulletin

... by linear least squares analysis: Master's thesis, University of Michigan, Ann Arbor, 95 p. Dorr, J. A., Jr., and D. F. Eschman, 1971, Geology of Michigan...

Application of an Inverse Method for Calculating Three-Dimensional Fault Geometries and Slip Vectors, Nun River Field, Nigeria

Hugh G. Kerr, Nicky White

AAPG Bulletin

... >= 2. The least-squares misfit function is a measure of the difference between these calculated faults. The correct values of these parameters...

The Geometry and Internal Architecture of Stream Mouth Bars in the Panther Tongue and the Ferron Sandstone Members, Utah, U.S.A.

Havard D. Enge, John A. Howell, Simon J. Buckley

Journal of Sedimentary Research (SEPM)

.... The parameter describing the thinning (taper) of each individual clinothem is derived from the least-squares regression line through a cross plot...

A Statistical Approach to Understanding Fluid Geochemistry Changes in Unconventional Plays

Craig D. Barrie, Catherine M. Donohue, J. Alex Zumberge

Unconventional Resources Technology Conference (URTEC)

...-linear relationships and variable curvatures (e.g. Peters et al., 2008). However, the alternating least squares (ALS) algorithm in Pirouette® allows...

The Geometry and Dynamics of Low-Relief Bed Forms in Heterogeneous Sediment in a Laboratory Channel, and their Relationship to Water Flow and Sediment Transport

Sean J. Bennett , John S. Bridge

Journal of Sedimentary Research (SEPM)

... with an accuracy of ± 1 mm. The mean water-surface slope S was obtained from a least-squares linear regression of the water-surface elevations...

Global Sea-Level Changes During the Past Century

Vivien Gornitz, Sergej Lebedeff

Special Publications of SEPM

... contributing stations by distance from a given cell and relative coastal area. A least-squares regression line is then fitted to the composite regional sea...

Simultaneous Calculation of Archie Parameters m, n, and a

Scott M. Frailey, George B. Asquith, George A. Anderson, Paulus S. Adisoemarta

West Texas Geological Society

... to solve for m, n and a simultaneously, values for Sw,?, Rw and Rt are required. The equations for minimum least squares (LSQ) derived...

Imaging Subsurface Structures Under Gas Clounds by Multi-Component Technology

Xiaogui Miao, Loh Fong Cheen, Libo Zi, Jing Du, Magali Beele, Jacques Bonnafe, Natalia Anggriani, Gilles Vallon, Claudio Strobbia

Indonesian Petroleum Association

... the direction of the fast velocity (Vfast), which is perpendicular to the direction of the slow velocity (Vslow). Using a least-squares inversion approach...

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...

Submarine Slumps

David G. Moore

Journal of Sedimentary Research (SEPM)

... depths within the cores using the vane shear techniques. Strength data from these two areas were plotted against burial depth and least squares lines...

Methodology for Correcting Bottomhole Temperatures Acquired from Wireline Logging Measurements in the Onshore U.S. Gulf of Mexico Basin to Characterize the Thermal Regime of Total Petroleum Systems

Lauri A. Burke, Ofori N. Pearson, Scott A. Kinney, Janet K. Pitman

GCAGS Journal

... for thermal maximums, by depth, as follows. First, a trendline gradient for BHT was determined using least squares analysis. Second, each population...

Determination of the stable isotope composition and total dissolved solids of Athabasca oil sands reservoir porewater: Part 1. A new tool for aqueous fluid characterization in oil sands reservoirs

Benjamin R. Cowie, Bruce James, Michael Nightingale, and Bernhard Mayer

AAPG Bulletin

... to the determination of water isotope compositions. A least-squares regression line was generated for the TDS– system, and the equation was solved using the value...

North Gabon: Lightning Strikes Connect the Gulf of Mexico Subsalt Trend to North Gabon

Karyna Rodriguez, Neil Hodgson, Howard Nicholls, Paolo Esestime, TGS

GEO ExPro Magazine

... as salt flank amplitude anomalies in postsalt thick sections. Very early results obtained for recent least squares Reverse Time Migration (RTM) tests...

Thermal Subsidence: Chapter 4

Charles L. Angevine, Paul L. Heller, Chris Paola

AAPG Special Volumes

... a tectonic subsidence data set in a least-squares sense. There is nothing sacred about least-squares curve-fitting techniques. In the real world...