2D Seismic Refraction Tomography Survey on Metasediment at a Proposed Development Site in Dengkil, Selangor

Umar Hamzah, Abd Rahim Samsudin

Geological Society of Malaysia (GSM)

... (unpublished). Hagedoorn, J.G. 1959. The plus-minus method of interpreting seismic refraction sections. Geophysical Prospecting 7:158-182. Hamzah, M...

Near-Surface Evidence of Migration of Natural Gas from Deep Reservoirs and Source Rocks

W. Stahl , E. Faber , B. D. Carey , D. L. Kirksey

AAPG Bulletin

... during the 2 to 4 months of storage of the clay samples and depends on sample lithology. It approaches a plus or minus equilibrium of about 5 ppt...

Seismic Facies Analysis Using Generative Topographic Mapping; #41717 (2015)

Satinder Chopra, Kurt Marfurt

Search and Discovery.com

... show up at a mean time of 1000 ms plus or minus 50 ms. We first generate different seismic attributes and then using the sweetness, GLCMenergy, GLCM...

Application of Sterane Epimerization to Evaluation of Yoshii Gas and Condensate Reservoir, Niigata Basin, Japan (1)

NORIYUKI SUZUKI

AAPG Bulletin

... and m/z 191, respectively. The error of plus or minus 0.04 is given to the epimer ratios according to Mackenzie and McKenzie (1983). Gallegos...

Brazos A-105 D-Sand Reservoir Modeling by Integration of Seismic Elastic Inversion Results with Geostatistical Techniques

W. Xu, K. Wrolstad, D. Kramer, P. Dooley, K. Domingue, D. T. Vo

AAPG Special Volumes

... with quantitative average porosity derived from a forward elastic model-based inversion method for three-dimensional seismic data were applied...

The Kneehills Tuff

W. D. Ritchie

CSPG Bulletin

... valuable reference point because it is so well dated biostratigraphically. A lead-alpha date on a zircon sample returned an age of 75 plus or minus 10...

Application of Real-Time Reservoir Navigation and High-Definition Electrical Imaging Services for Enhanced Well Placement and Optimal Completion Design

Mark G. Thomas, Rajdeep Gupta, Shane D. Hammons, Stephen J. Martin

Unconventional Resources Technology Conference (URTEC)

... resistivity, and the real-time reservoir navigation service (RNS). The increased “in-zone” footage indicated this method provided a significant advantage over...

Vanadium, Nickel, and Iron Trace Metals in Crude Oils of Western Canada

G. W. Hodgson

AAPG Bulletin

... analyses was about plus or minus 5% for the nickel Fig. 1. Key map showing locations of following oil fields: 1 McMurray, 2 Wabiskaw, 3 Flat Lake, 4...

Adjustment of Electric Log Values for Preparation of Subsurface Facies Maps

David R. Matuszak

AAPG Bulletin

... of the curves of Figure 11. Recorded for each set of values is either a plus or a minus sign to indicate whether adjustment, as described earlier...

A Practical Model for Organic Richness from Porosity and Resistivity Logs

Q. R. PASSEY , S. CREANEY , J. B. KULLA , F. J. MORETTI , and J. D. STROUD

AAPG Bulletin

... wells, the standard deviation of the difference between calculated and measured TOC values is (plus or minus) 1.4 weight percent or better. The general...

Stress, pore pressure, and dynamically constrained hydrocarbon columns in the South Eugene Island 330 field, northern Gulf of Mexico

Thomas Finkbeiner, Mark Zoback, Peter Flemings, Beth Stump

AAPG Bulletin

... contacts). The data extracted from these maps are summarized in Table 2. We estimate these values to be accurate to plus or minus 5 m for the structural...

Some Aspects of the Genesis of the Uranium Deposits of the Morrison Formation in the Grants Uranium Region, New Mexico, Inferred from Chemical Characteristics of the Deposits

Charles S. Spirakis, Charles T. Pierson

AAPG Special Volumes

...-or-minus one bracket at the 68% confidence level and plus-or-minus two brackets at the 95% confidence level. Over the period of time of about 25 years...

Cottonwood - Harley Dome Area, Grand County, Utah

William E. Keebler

Utah Geological Association

... of erosion. From plus or minus 30 feet thick in this area, the Navajo rapidly thickens to 250 feet at the north end of the Salt Valley. Carmel Formation...

Extended Abstract: Getting a Grip on the Philosophy of Ethics and Geology

Robert J Traylor

Houston Geological Society Bulletin

... and certainly a misnomer, because there is nothing "absolute" about radiometric measurements. What's a few million years, plus or minus...

Our Oil and Gas Reserves: Their Meaning and Limitations: DISCUSSION

Frederic H. Lahee

AAPG Bulletin

... production, the estimated proved reserves as of the end of the year, and the net change, plus or minus, between these reserves and those at the end...

Geostatistical Methods

Mike Shepherd

AAPG Special Volumes

.... In practice, there will be a lag tolerance specified to capture data close to the lag distance. This will be plus or minus 50% of the distance between...

A Code for Expressing Grain Size Distribution

K. O. Emery, Howard Gould

Journal of Sedimentary Research (SEPM)

... and plotting large suites of marine bottom samples has resulted in the development of a new coding method for expressing grain size distribution. The system...

Effects of near Surface Lithology on Velocity Modelling and Time„Depth Relationships in the Cooper„Eromanga„Lake Eyre Basin

Anna Manka, Glen Buick, Rob Menpes, Luke Gardiner, Cameron Jones, Khalid Amrouch

Australian Petroleum Production & Exploration Association (APPEA) Journal

... that will not fit a plus/minus form (Galton 1879; Limpert et al. 2001). However, as the error ranges do not reflect the distribution itself, a plus/minus answer...

Mule Ear Diatreme

J. A. Ellingson

Four Corners Geological Society

... by using fission-tracks in apatite and sphene from two granitic xenoliths. The apatite fission-track ages are 28 plus or minus 3 and 30 plus or minus 3 m.y....

A Report on the Renaissance of Gravity in the Deep Water Gulf of Mexico: A Practical View of Integration Methods

Brian S. Anderson, Mark E. Weber, John E. Bain

Houston Geological Society

... modeled for salt at this depth will provide approximately plus or minus 300 feet accuracy in modeled salt thickness. For 0.2 mGal data this goes up to 400...

THE RENAISSANCE OF GRAVITY

Search and Discovery.com

Spectrochemical Sample Logging of Limestones

L. L. Sloss , S. R. B. Cooke

AAPG Bulletin

... crushed with a maul on an easily cleaned iron plate and then were screened in running water, the minus two-mesh, plus eight-mesh material being...

The Gridded Fault Surface: Chapter 11

Don Clarke

AAPG Special Volumes

... distance of plus or minus 200 ft (60 m). We call this vertical range-editing. It should be noted that the vertical range-editing is another subjective...

Gravimetric Exploration in the Edwards Trend Area of South Texas

Maynard P. Jones

South Texas Geological Society Special Publications

..., either physically or mathematically, the “plus” or “minus” departure of the mid-point of the template from the contoured surface. In the so-called...

Effects of Alaskan Earthquake on Water Levels in the Edwards Underground Reservoir in Bexar County

Porter Montgomery

Bulletin of South Texas Geological Society

... Interstate 410 north of San Antonio and slightly west of US Highway 281. Well No. 1 is 874′ deep, top of the Edwards formation is 500′ plus or minus...