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The AAPG/Datapages Combined Publications Database
Showing 432 Results. Searched 200,619 documents.
Well-Bore Geometries for Optimum Fracture Characterization and Drainage: (Reprinted from WTGS December 1992, V.32, No. 4)
John C. Lorenz
West Texas Geological Society
... A (plus or minus 30 degrees to normal to fracture trend) will encounter at least 87 percent of the fractures that a fracture-normal well bore would hit...
2001
Preliminary Geochemical and Petrographic Analysis of Lower Eocene Fluvial Sandstones in the Rocky Mountain Region
James D. Vine, Elizabeth B. Tourtelot
Wyoming Geological Association
...). The limits of confidence by this method are similar to those for the six-step visual spectrographic method; precision of a reported value is about plus...
1970
Thermal Histories and Hydrocarbon Generation: Example from Utah-Wyoming Thrust Belt
Dave Deming , David S. Chapman
AAPG Bulletin
... heat flows of 40, 50, 60, and 70 mW/m2, respectively. Error bars on vitrinite reflectance data indicate plus or minus one standard deviation from mean...
1989
Spatial variations in apparent recharge rate to a montane Paleozoic bedrock aquifer, Appalachian Mountains, United States
Cristine M. Vinciguerra, Joseph J. Donovan
Environmental Geosciences (DEG)
... between groundwater recharge and groundwater discharge (i.e., base flow) plus or minus changes in storage. Where the technique may be applied...
2010
Future of Petroleum Exploration in the United States
John D. Haun
AAPG Bulletin
... 1954 has been approximately the same for each 5-yr period, 172 million feet (plus or minus 10%), and cumulative footage drilled can be subst tuted...
1981
A Multi-Disciplinary Modeling Approach to Determine Economic Viability of Infill Horizontal Well Development in the Green River Basin
Taylor Levon, Joel Mazza
Unconventional Resources Technology Conference (URTEC)
... model. This was done for porosity and water saturation using a plus or minus 25 and 10 percent variation, respectively. Also, a modified reservoir model...
2020
Chapter One: Introduction to AAPG Memoir 42/SEG Investigations in Geophysics, No. 9, 7th Ed.
Alistair R. Brown
AAPG Special Volumes
.... Figure 1-26. Typical statistical distribution of amplitudes in a 3-D data volume. Plus or minus 128, the largest number which can be described by 8 bits...
2011
The Stamford West Field Jones-Haskell County
Charles F. Passel
Abilene Geological Society
... of 80 feet plus or minus, and from core analysis shows a maximum recovery of 1174 barrels per acre foot. The Stamford West Swastika sand ranges...
1954
Granite Wash of the Peace River Area
Wm. A. Greenwalt, Jr.
CSPG Bulletin
.... By arbitrarily placing sea level at the maximum isopach value, it was seen that the Peace River Ridge sloped somewhat irregularly to an elevation of plus...
1956
Historic Earthquakes Along the San Jacinto Fault Zone, San Jacinto, California
Gary S. Rasmussen
Pacific Section SEPM
... from a sample at a depth of 8 feet below the natural ground surface south of Park Hill yielded an age of 190 years plus or minus 85 y e a r s . Using...
1982
Devonian of the Franlinian Eugeosyncline
H. P. Trettin
CSPG Special Publications
...), whereas the metamorphism of the Rens Fiord Complex is slight, and Cambrian or late Proterozoic (530 plus or minus 35 m.y.?). Both belts cut across...
1967
Geology of the Granby Anticline
R.J. Sanders
Rocky Mountain Association of Geologists
.... The lower 60 fcct plus or minus of the Morrison unit as measured in the British-American well may possibly be Jurassic Sundance equivalent. STRUCTURE 3...
1957
An Instrument for Measuring Pretectonic Current-directions: NOTES
Hakuyu Okada , Masafumi Arita
Journal of Sedimentary Research (SEPM)
... () between the lines. FIG. 2. Principle in determining pretectonic current-directions in tilted beds. The signs of plus and minus suggest addition...
1970
Abstract: Duplex Wave Migration Imaging Vertical Boundaries; #90211 (2015)
Brian Link and Naum Marmalevsky
Search and Discovery.com
... is a newly developed technology that is capable of imaging only vertical events (plus or minus 15 degrees) and it does not require either a large...
2015
An Overview of Extreme Storms in the U.S. Gulf of Mexico and Their Coastal Impacts; #110143 (2010)
Asbury Sallenger
Search and Discovery.com
... impacts: --fly before and after storms to detect change. --accuracy, plus or minus 15 cm. --used various LIdars through the program. 8 Hurricane Lili...
2010
Mapping Soil Geochemical Anomalies in the Mesa Quadrangle, Arizona, Using NURE Data
Patricia Borrego, Mélida Gutiérrez
Environmental Geosciences (DEG)
... part of the area. Anomalies Anomalies are defined as those values that lie outside the range of the mean plus or minus two standard deviations...
2000
Recommendations for the Proper Handling of Cores and Sedimentological Analysis of Core Sequences
Charles T. Siemers, Roderick W. Tillman
Special Publications of SEPM
... as the logging tool is pulled up the hole during logging runs. Core and log depths commonly require a correction of plus or minus 5 to 10 feet and may...
1981
Multi-Realization Reservoir Simulation Modelling Applied to Vaca Muerta Cube Development for Type Curve Generation
David Delgado, Jorge Viamontes, Lan Zhang, Peter Zannitto
Unconventional Resources Technology Conference (URTEC)
... in Vaca Muerta black oil Unit 1 and 2 core data. The range of Vaca Muerta matrix permeability is allowed to vary equally plus or minus one order...
2023
Measures for Describing the Size Distribution of Sediments
Douglas L. Inman
Journal of Sedimentary Research (SEPM)
... of the population occurs between plus and minus one standard deviation to either side of the mean (or median, since these FIG. 2. Showing the influence...
1952
Using Fluid Inclusion Salinity Data to Reduce Uncertainty in Petrophysical Sw Calculation New Application of an Old Technique in Unconventional Reservoirs
Benedek Gál, Zsófia Poros, Edwin Ortega
Unconventional Resources Technology Conference (URTEC)
... under study. Furthermore, we prove the method valid over a wide range of salinities (50-200 ppk NaCleq) and in cases where inclusion salinities...
2020
Delaware Basin Regional 3D Geo-Cellular Model: Construction and Use
Brian Casey, David Carr, Ray Eastwood, Katie Smye, Shayan Tavassoli
Unconventional Resources Technology Conference (URTEC)
... value for the WFMP-A2 oil-in-place is large (0.573) and can be presented as 83 billion barrels of oil initially-in-place, plus or minus 48 billion...
2022
Engineering Geology of Jordanelle Dam and Reservoir Bonneville Unit, Central Utah Project, Utah
Gary Dow
Utah Geological Association
... by potassium-argon dating techniques on hornblende to be mid-Tertiary, Oligocene in age 36.3 million years to 38.5 million years plus or minus 1.9 million...
1995
Study of the Wilcox Group, Texas, Louisiana, Mississippi, Alabama
Dugal Gordon, J. A. Wheeler
Houston Geological Society
... break in middle. Thickness (75 feet, plus or minus) Shale break (10 feet, plus) Sand series (locally shaly), (75-100 feet) Sandy shale zone (175...
1940
Houston Geological Society: Study Group II — 1946: Valuation of Petroleum Properties
Dr. John D. Todd, H. C. Spoor Jr.
Houston Geological Society
... relationship: This is an average relationship, applicable to reservoirs younger in age than Wilcox, and is accurate to plus or minus 20 degrees, or so...
1947
Horizontal Well Drilling in the Kutubu Project, Papua New Guinea
M. S. DeVries, R. D. Parrish, J. L. Ryan
Papua New Guinea (PNG) Petroleum Convention Proceedings
... tool could be used to precisely identify the top of the Toro sandstone within plus-or-minus one foot MD. Stopping even several feet short would leave...
1996