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The AAPG/Datapages Combined Publications Database
Showing 34,499 Results. Searched 200,691 documents.
Improving Cement Placement in Horizontal Wells of Unconventional Reservoirs Using Magneto-Rheological Fluids
Mansur Ermila, Alfred W. Eustes, Mehdi Mokhtari
Unconventional Resources Technology Conference (URTEC)
... on Mud Displacement In the case of horizontal wells, gravity forces the casing downward and the resulting effect on mud displacement is significant...
2013
Production Problems: Part 9. Production Engineering Methods
Bradley M. Robinson
AAPG Special Volumes
... of the formation or when the perforations are placed only in the oil zone (Figure 1). The horizontal and vertical pressure gradients created...
1992
Simulation of Multiple-Stage Fracturing in Quasibrittle Shale Formations Using Pore Pressure Cohesive Zone Model
Mahdi Haddad, Kamy Sepehrnoori
Unconventional Resources Technology Conference (URTEC)
... fracture propagation, Figure 11(b), due to the minimum horizontal stress gradient with depth and the local stress re-distribution after the initialized...
2014
Tables of Terrane Effects
Donald C. Barton
AAPG Bulletin
...; that is, each prism of the 11 to 23 is an exact projection of a prism of the 5 to 11 zone, and the gradient (or differential curvature) effect...
1929
Interpretation Methods in the Exploration of Oligocene-Miocene Carbonate Reservoirs, Offshore Northwest Madura, Indonesia
David C. Carter, Dwi Mandhiri, Robert K. Park, Imron Asjhari, Syaiful Basyuni, Sergey Birdus, John P. Bradfield, Ary Iriawan, Meutia Nasfiah, M.A. Agung Nugroho
Indonesian Petroleum Association
... vertical velocity gradients. The vertical velocity gradient: k, in the expression V = V0 + kZ (see Marsden, 1992) is initially determined from well...
2005
3-D Finite Difference Modeling of Microseismic Source Mechanisms in the Wolfcamp Shale of the Permian Basin
Robert Meek, Robert A. Hull, Austin Von der Hoya, David Eaton
Unconventional Resources Technology Conference (URTEC)
... that attributes derived from a vertical array are more robust than attributes from a horizontal array. Attributes from events that occurred near high velocity...
2015
Applications of Shallow High-Resolution Seismic Reflection to Environmental Problems
Richard D. Miller, William E. Doll, Carlene Merey, William E. Black
Environmental Geosciences (DEG)
... in mapping coherent events in shale continuous over distances as short as 20 m horizontal and provided detailed information about an acoustically significant...
1994
Why Hydrate-linked Velocity-amplitude Anomaly Structures are Common in the Bering Sea Basin: A Hypothesis
David W. Scholl, Ginger A. Barth, Jonathan R. Childs
AAPG Special Volumes
...Why Hydrate-linked Velocity-amplitude Anomaly Structures are Common in the Bering Sea Basin: A Hypothesis David W. Scholl, Ginger A. Barth, Jonathan...
2009
Using anisotropic rock physics to model VTI parameters
Marco A. Perez
International Meeting for Applied Geoscience and Energy (IMAGE)
... the dependence of velocity on the propagation direction. Thomsen (1986) describes the seismic significance of vertical transverse isotropy (VTI) often...
2023
Analysis of Scale Exaggeration on Seismic Profiles (1)
DONALD S. STONE
AAPG Bulletin
... half-velocity (V[a]/2). V[a]/2 x TWT = L[v] (Equation 1; SEE PAGE IMAGE) L[v] then can be compared to the equivalent horizontal length (L[h]) along...
1991
Magnetometer Study in Louisiana: DISCUSSION
B. B. Weatherby
AAPG Bulletin
... would bear a striking relation to the gravity gradient in torsion-balance work, which is significant in the light of Albert Einstein's recently...
1930
Froude Number is not the Critical Factor in Behavior of Long Run-Out Turbidity Currents
Search and Discovery.com
N/A
Review: Geophysical Methods for Karst Detection and Mapping
T. L. Dobecki
Houston Geological Society Bulletin
... or localized horizontal compression of the overburden increases the overburden velocity. These, too, can be detected by refraction methods...
1990
Numerical Study of Proppant Transport and Distribution along Opened Bedding Planes
Jun Xie, Jizhou Tang, Sijie Sun, Yuwei Li, Yi Song, Xiaojin Zhou, Haoyong Huang
Unconventional Resources Technology Conference (URTEC)
... is adopted to calculate the velocity of sedimentation. The blocking effect from high volume fraction is considered. There is no sedimentation...
2020
A New Analytical Model for Liquid Loading in Shale Gas Reservoirs
Juntai Shi, Xiangfang Li, Yunchao Pu, Wei Yu
Unconventional Resources Technology Conference (URTEC)
... flow velocity in the form of liquid droplet in the horizontal wellbore, which is expressed as, vmax ( )nRd 2 l g 0.7 g a 1...
2014
Gas-Hydrate Horizons Detected in Seismic-Profiler Data from the Western North Atlantic
Brian E. Tucholke , George M. Bryan , John I. Ewing
AAPG Bulletin
... in seawater using a set of geologically reasonable values for thermal gradient, sound velocity in sediment, and bottom-water temperature. Our value...
1977
Numerical Simulation of Proppant Transport and Deposition in Complex Hydraulic-Natural Fracture Networks
Dharmendra Kumar, Baohua Liu, Ahmad Ghassemi
Unconventional Resources Technology Conference (URTEC)
... by fluid velocity, micro-proppant size, fluid rheology, fracture aperture, hydraulic and natural fracture interaction and near wellbore tortuosity...
2021
Integration of Vertical Seismic, Surface Seismic, and Well-log Data at the Mallik 2L-38 Gas-hydrate Research Well, Mackenzie Delta, Canada
M. W. Lee, T. S. Collett, W. F. Agena
AAPG Special Volumes
... 600900 m (19682953 ft) are about 20% slower than the sonic-log-derived velocity, implying seismic anisotropy. The spectral ratio of downgoing waves...
2009
Time-lapse monitoring of saltwater disposal in Kansas and Oklahoma using ambient noise
Lonn Brown, Mirko van der Baan
International Meeting for Applied Geoscience and Energy (IMAGE)
... that are expected to drive the velocity variations it will be necessary to consider underlying secondary effects, such as the effect of rainfall. For the subsurface...
2022
Abstracts: Implicit Preconditioning for Least-squares Nonstationary Phase Shift; #90173 (2015)
Marcus R. Wilson and Robert J. Ferguson
Search and Discovery.com
... gradient iterations at the cost of introducing an approximation to the evanescent filter. We observe a substantial reduction in the number...
2015
Research of high-precision depth interpretation method for low-amplitude offshore reservoir and its application in C oilfield, Bohai Bay Basin
Wenbin Li, Jianli Wang, Zhenglong Zhang, Heng Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
... of velocity is lithology, and the second is ① Construct virtual wells from large amounts of edge detection data at horizontal wells, which are new...
2022
Effects of Nanoscale Pore Confinement on CO2 Displacement
Kai Zhang, Qingquan Liu, Shuhua Wang, Dong Feng, Keliu Wu, Xiaohu Dong, Shengnan Chen, Zhangxin Chen
Unconventional Resources Technology Conference (URTEC)
...osity Ratio Figure 14. Liquid Vapor Viscosity Ratio at Various Radii As the mobility benefits from a confinement effect, the threshold velocity can ...
2016
Transport Mechanisms of Sand in Deep-Marine Environments—Insights Based on Laboratory Experiments
Hedda Breien, Fabio V. De Blasio, Anders Elverhoi, Johan P. Nystuen, Carl B. Harbitz
Journal of Sedimentary Research (SEPM)
... on the top. Figure 5. Time development of the velocity field (horizontal) of a 10 wt. % clay experimental flow at upstream station. A) Average velocity...
2010
Research and application of amplitude attenuation gradient hydrocarbon detection method without the influence of thickness
Yichuan Wang, Xijia Sun, Zhao Ye, Pan Yong
International Meeting for Applied Geoscience and Energy (IMAGE)
... Deconvolution effect of broadband ricker wavelet Amplitude attenuation gradient method without the influence of thickness The Kenli structure is located...
2022
ABSTRACT: Dual Gradient Drilling Technology
Weinstock, Charles W.
GCAGS Transactions
...ABSTRACT: Dual Gradient Drilling Technology Weinstock, Charles W. 2002 1004 1004 Vol. 52 (2002) The oil industry is developing a variety of new...
2002