Physics-Driven Optimization of Drained Rock Volume for Multistage Fracturing: Field Example from the Wolfcamp Formation, Midland Basin

Sergei G. Parsegov, Kiran Nandlal, David S. Schechter, Ruud Weijermars

Unconventional Resources Technology Conference (URTEC)

... as: 𝑁 𝑝 (𝑡) = 𝑞 𝑎 𝑡 𝑚 (9) Based on historical production data parameters a, m, q∞, and qi can be determined using the least squares fit method...

Development of Tight Gas Sand Core Analysis Techniques for the Pinedale Field, Sublette County, Wyoming

John M. Dacy, Paul R. Martin, Robert H. Lee

AAPG Special Volumes

.... Resistivity indices (I) were calculated from the resistivity determinations. A least squares linear regression of log resistivity index versus log water...

Chronologic modeling of faulted and fractured reservoirs using geomechanically based restoration: Technique and industry applications

Laurent Maerten, Frantz Maerten

AAPG Bulletin

..., Graylock Press.Rouby, D., P. R. Cobbold, P. Szatmari, S. Demerican, D. Coelho, and J. A. Rici, 1993, Least-squares palinspastic restoration of region...

Estimation of kerogen porosity in source rocks as a function of thermal transformation: Example from the Mowry Shale in the Powder River Basin of Wyoming

Christopher J. Modica, Scott G. Lapierre

AAPG Bulletin

...). Dashed line is least-squares fit to data, and solid line is computed from the assumption that S2 yields are 85% carbon by weight. This assumption...

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Quantifying CretaceousCenozoic exhumation in the Otway Basin, southeastern Australia, using sonic transit time data: Implications for conventional and unconventional hydrocarbon prospectivity

David R. Tassone, Simon P. Holford, Ian R. Duddy, Paul F. Green, Richard R. Hillis

AAPG Bulletin

... transforming the exponential function to (inset of Figure 6A)yields a linear expression where a least squares regression was applied to optimize...

Seismic Refraction Studies in Gulf of California

Richard P. Phillips

AAPG Special Volumes

... the input data; these "water delay corrected" data were then used to calculate slopes and intercepts of lines using the method of least squares...

Front Matter, Abstracts: West Texas Geological Society: Resource Plays in the Permian Basin: Resource to Reserves

Michael A. Raines

West Texas Geological Society

... traditional discriminant analysis, linear regression, non-linear regression or any type of algorithm which attempts to minimize a least squares equation...

An Analysis of Joint Development in Thick Sandstone Beds of the Elk Basin Anticline, Montana-Wyoming

Terry Engelder, Michael R. Gross, Paul Pinkerton

Rocky Mountain Association of Geologists

... in Figure 7a, there is scatter about the least-squares fit line representing an FSI in the backlimb of Elk Basin. Aside from scatter arising from...

Scaling the Response of Deltas To Relative-Sea-Level Cycles By Autogenic Space and Time Scales: A Laboratory Study

Lizhu Yu, Qi Li,, Kyle M. Straub

Journal of Sedimentary Research (SEPM)

...We subtract this long-term trend, estimated with a least-squares linear regression of the growth of , to analyze the influence of sea-level cycles in pe...

Controls on the Geometry of Incised Valleys in the Basal Quartz Unit (Lower Cretaceous), Western Canada Sedimentary Basin

George W. Ardies, Robert W. Dalrymple, Brian A. Zaitlin

Journal of Sedimentary Research (SEPM)

... along the BAT2 trunk valley (Fig. 9). Smooth curves have been fitted to the data using the least-squares technique, to illustrate how thickness (i.e....

Sedimentation and Trapping Mechanism in Upper Miocene Stevens and Older Turbidite Fans of Southeastern San Joaquin Valley, California

Bruce A. MacPherson

AAPG Bulletin

... the Stevens, the best least-squares curve of the form, Y - aX + b, is a straight line. Correlation coefficients (r), give values greater than 0.85 which...

I would rather be vaguely right than precisely wrong: A new approach to decision making in the petroleum exploration and production industry

Reidar B. Bratvold, Steve H. Begg

AAPG Bulletin

... p.Longstaff, F. A., and E. S. Schwartz, 2001, Valuing American options by simulation: A simple least-squares approach: Review of Financial Studies, v. 14...

From outcrop to flow simulation: Constructing discrete fracture models from a LIDAR survey

Christopher E. Wilson, Atilla Aydin, Mohammad Karimi-Fard, Louis J. Durlofsky, Amir Sagy, Emily E. Brodsky, Oliver Kreylos, Louise H. Kellogg

AAPG Bulletin

... of the scan as the distance from the scanner to the roadcut increased (Figure 4A). Once acquired, a least-squares fit of common reference points unified...

Cracking, mixing, and geochemical correlation of crude oils, North Slope, Alaska

Ye Wang, Kenneth E. Peters, J. Michael Moldowan, Kenneth J. Bird, and Leslie B. Magoon

AAPG Bulletin

... Slope oils into different families based on source-related biomarker and isotopic data. In addition, Peters et al. (2008) applied alternating least...

Applying carbon-isotope stratigraphy using well cuttings for high-resolution chemostratigraphic correlation of the subsurface

J. Garrecht Metzger, David A. Fike, and L. B. Smith

AAPG Bulletin

... core C1. refers to linear least-squares fit. * = one outlier (arrow) omitted from regression calculation.Another interval of possible isotopic...

Electrical and fluid flow properties of carbonate microporosity types from multiscale digital image analysis and mercury injection

Jan H. Norbisrath, Gregor P. Eberli, Ben Laurich, Guillaume Desbois, Ralf J. Weger, and Janos L. Urai

AAPG Bulletin

...). This means that pores below 256 and 64 nm equivalent side length are omitted in the 5000× and 15,000× mosaics, respectively. Least-squares linear regression...

Magnetic susceptibility variations in lower Paleozoic shales of the western Baltic Basin (northern Poland): A tool for regional stratigraphic correlations and the decoding of paleoenvironmental changes

D. K. Niezabitowska, J. Roszkowska-Remin, R. Szaniawski, and A. Derkowski

AAPG Bulletin

...°C–250°C temperature range) using the least-squares method. The calculations were conducted in the instruments Cureval8 software. Lithosedimentological...

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Application of Precise Acoustic Positioning Techniques During the Development of the Liuhua Field in the South China Sea

John D. Hughes, Nigel C. Kelland

Southeast Asia Petroleum Exploration Society (SEAPEX)

... Field Frame The ‘as-laid’ UTM positions of the Near Field frames were determined using the variation of co-ordinates, least squares technique from...

Recognition Of Deltas by Fitting Trend Surfaces to Upper Pennsylvanian Sandstones in North-Central Texas

E. G. Wermund, W. A. Jenkins Jr.

Special Publications of SEPM

... and negative residuals. The line (plane) provided by the computer program is the best possible fit in the least squares sense. This means that the sum...

Clay Minerals in the Sediments of Lake Baikal: A Useful Climate Proxy

Richard Yuretich , Martin Melles , Brenn Sarata , Hannes Grobe

Journal of Sedimentary Research (SEPM)

... are not amenable to a direct statistical analysis. However, when the data are smoothed (locally weighted least-squares regression, coefficient = 0.3...

Oblique Convergence During Northeast-Southwest Laramide Compression Along the East-West Owl Creek and Casper Mountain Arches, Central Wyoming

Philipp C. Molzer, Eric A. Erslev

AAPG Bulletin

... determines the directions and relative magnitudes of the principal stress axes. The least-squares algorithm of Angelier (1990), as implemented...

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Stratigraphic and Structural Study of Paleogene Wilcox Strata in East-Central Louisiana: Implications for Coalbed Natural Gas Exploration

Scott G. Comegys, Gary L. Kinsland, and F. Clayton Breland, Jr.

GCAGS Transactions

... electronically in PETRA® using the Highly Connected Features (Least Squares) algorithm. Posted on each map at each well are the data values relevant...