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The AAPG/Datapages Combined Publications Database
Showing 1,098 Results. Searched 200,619 documents.
Quaternary Development of Channels, Levees, and Lobes on Middle Laurentian Fan
William R. Normark , David J. W. Piper , Dorrik A. V. Stow
AAPG Bulletin
..., vertical scale in seconds of round-trip traveltime. Left, vertical scale in meters, assuming sound velocity in water of 1480 m/sec (4,855 ft/sec). Profile...
1983
Deep Structure of Northern Mississippi Embayment
A. Ginzburg , W. D. Mooney , A. W. Walter , W. J. Lutter , J. H. Healy
AAPG Bulletin
...-normalized record sections of shotpoints 3, 5, and 6 with traveltime curves calculated for model shown in Figures 3 and 4. No filter. Presence of a low...
1983
Geophysical Studies of Large Blind Thrust, Valley and Ridge Province, Central Appalachians
Thomas H. Wilson
AAPG Bulletin
... be clearly resolved (Figure 12B). The Cambrian-Ordovician reflectors within the footwall block (1.5 to 2.5 sec two-way traveltime) are also difficult...
1989
Seismic Modeling of a Strongly Emergent Thrust Front, West Spitsbergen Fold Belt, Svalbard
Stale E. Johansen , Sivert Kibsgaard , Arild Andresen , Tormod Henningsen , John R. Granli
AAPG Bulletin
... 0.5 s two-way traveltime. Given the shallow depth, the stacking velocities should be reliable. This is due to the Fig. 4. Synthetic seismic section...
1994
Estimation of Single-Phase Permeability from Parameters of Particle-Size Distribution
Manmath N. Panda, Larry W. Lake
AAPG Bulletin
... of radius R is (Bird et al., 1960) [EQUATION] If we equate the traveltime from one end of the tube to the other to the traveltime across a permeable...
1994
A Multidisciplinary Approach to Reservoir Subdivision of the Maastrichtian Chalk in the Dan Field, Danish North Sea
Lars Kristensen , Thomas Dons , Kim Gunn Maver , Poul Schioler
AAPG Bulletin
...-to-time conversions done for tying the biostratigraphy to the seismic data. The seismic traveltime within the chalk was estimated from interval velocity...
1995
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
...-way traveltime. Below this level, the fault is difficult to trace. The interpreted fault sur ace does not change geometry significantly along strike...
1996
Structural Trend Analysis by Axial Surface Mapping: Discussion
Donald S. Stone
AAPG Bulletin
... Pico beds below (Figure 5A). This unconformity also is ignored by Shaw et al., but is visible on seismic profiles [about 0.7 s two-way traveltime (TWT...
1996
Structural Trend Analysis by Axial Surface Mapping: Reply
John H. Shaw , Stephen C. Hook , John Suppe
AAPG Bulletin
... Point trend overlie horizontal reflections, so that dipping beds overlie flat beds between 15,000 and 17,000 ft (3.5-4.0 s two-way traveltime) on both...
1996
Val Verde Basin: Thrusted Strawn (Pennsylvanian) Carbonate Reservoirs, Pakenham Field Area
Scott L. Montgomery
AAPG Bulletin
..., with some intervals showing indications of both "massive" carbonates (thick zones of low gamma-ray values, high traveltime values), and other...
1996
South Casper Creek Field: A Study in Reservoir Heterogeneity
Scott L. Montgomery
AAPG Bulletin
... for each dip section. Top numbers (10, 20, 30...130) refer to northeast-southwest positions on these lines. Time is two-way traveltime in milliseconds...
1996
Foreland Basement-Involved Structures: Discussion1
Donald S. Stone
AAPG Bulletin
.... Figure 4--Seismic profile modified from Mitra and Mount's (1998) Figure 16b. Scale is approximately 1:1 at 2.0 s two-way traveltime (twt...
1999
Ek-Balam field: A structure related to multiple stages of salt tectonics and extension
Shankar Mitra, Juan Duran A. Gonzalez, Jesus Hernandez Garcia, Kajari Ghosh
AAPG Bulletin
..., the average velocity (VKb) for the top of the breccia was defined bywhere t1 is the two-way traveltime to the top of the Cretaceous breccia. This velocity...
2007
Controls on minibasin infill in the Nordkapp Basin: Evidence of complex Triassic synsedimentary deposition influenced by salt tectonics
Luis Alberto Rojo, and Alejandro Escalona
AAPG Bulletin
.... = Toarcian; Tournais. = Tournaisian; Turon. = Turonian; TWT = two-way traveltime; Valangin. = Valanginian; V.E....
2018
Onshore–offshore correlations of Cretaceous fluvial-deltaic sequences, southern Baltimore Canyon trough
William J. Schmelz, Kenneth G. Miller, Gregory S. Mountain, James V. Browning, and Kimberly E. Baldwin
AAPG Bulletin
... surveys were primarily used to convert log measurements and biostratigraphic picks from depth to two-way traveltime (TWTT). Regional Time–Depth...
2020
Excess permeability in the Brazil pre-Salt: Nonmatrix types, concepts, diagnostic indicators, and reservoir implications
Fermín Fernández-Ibáñez, Gareth D. Jones, Jordan G. Mimoun, Melanie G. Bowen, J. A. Toni Simo, Virginia Marcon, and William L. Esch
AAPG Bulletin
... observations were made on amplitude and traveltime borehole images. However, when both data sets are available, our nonmatrix characterization...
2022
Abstract: Automatic High-Density Constrained Velocity Picking; #90211 (2015)
Emil Blias
Search and Discovery.com
...), application of Dix’s formula to laterally inhomogeneous layer gives reasonable interval velocity estimation. Then we can include analytical traveltime...
2015
Seismic and Thermal Characterization of a Bottom-simulating Reflection in the Northern Gulf of Mexico
Deborah R. Hutchinson, Patrick E. Hart, Carolyn D. Ruppel, Fred Snyder, Brandon Dugan
AAPG Special Volumes
... part of the mapped region, the top-of- salt surface lies greater than 1.0 s traveltime (1.0 km [0.6 mi]) beneath the sea floor.Figure 5. A) 3-D...
2009
Morphology, Internal Structure, Seismic Stratigraphy, and Sedimentation of Indus Fan
V. Kolla , F. Coumes
AAPG Bulletin
... has channels with well-developed levees and relief commonly exceeding 100 m, within the upper half-second (two-way traveltime) of sedimentary section...
1987
Evolution of Southern Caribbean Plate Boundary, Vicinity of Trinidad and Tobago
Paul Robertson , Kevin Burke
AAPG Bulletin
... traveltime (seconds) to top of basement. Continuity of the basement reflector is very clear because of the sharp velocity contrast at the contact between...
1989
Geometric and seismic interpretation of the Perdido fold belt: Northwestern deep-water Gulf of Mexico
Rion H. Camerlo, Edward F. Benson
AAPG Bulletin
... in 1996. Data quality significantly improved by the late 1990s, especially the imaging and recording of data to much greater depth (traveltime...
2006
Regional geologic and tectonic setting of the Maracaibo supergiant basin, western Venezuela
Paul Mann, Alejandro Escalona, Mara Vernica Castillo
AAPG Bulletin
... of the Maracaibo Basin region (modified from Borges, 1984) combined with a seismic time slice from a merged 3-D seismic data set at 1 s two-way traveltime (TWT...
2006
Geometry of winglike clastic intrusions adjacent to a deep-water channel complex: Implications for hydrocarbon exploration and production
Christopher A.-L. Jackson, Mads Huuse, Gillian P. Barber
AAPG Bulletin
... reflection events referred to in the text are labeled and correlated to the stratigraphic column in panel A. TWT = two-way traveltime in milliseconds. (C...
2011
Tan-Lu fault system and its significance in oil accumulation in the central Liaodong Bay subbasin, Bohai Bay Basin, China
Changyu Teng, Fang Hao, Huayao Zou, Xinhuai Zhou, and Changgui Xu
AAPG Bulletin
...; Minghuazhen Formation; Qp = Pingyuan Formation; TWT = two-way traveltime. Figure 5. (A) Uninterpreted and (B) interpreted seismic...
2016
Cretaceous sequence stratigraphy of Georges Bank Basin: Implications for carbon storage
W. John Schmelz, Kenneth G. Miller, Alexandra C. Adams, Stephen J. Graham, Gregory S. Mountain, James V. Browning, and Kimberly E. Baldwin
AAPG Bulletin
... flooding surface; SB = sequence boundary; TS = transgressive surface; TST = transgressive systems tract; TWT = two-way traveltime. Figure 4. Cross...
2024