Mud Problems in the Four Corners Region

E. J. Mayhew

Four Corners Geological Society

... in trying to drill any part of the Lewis shale section with gas as the drilling fluid. Mud, water and lost circulation materials in many wells filter...

Exorcising the Ghosts … The New Streamer Technology Launched by PGS

Lasse Amundsen, Martin Landrø

GEO ExPro Magazine

... notches (zeros) in the seismic frequency band. The resulting filter effect on the recorded data restricts streamer towing depths to a range of about six...

Diffraction and Refraction on Reflection Seismograph Records as Aids to Fault Interpretation

Miller Quarles, Jr.

GCAGS Transactions

... OF DIFFRACTION THEORY A brief explanation of the effects of diffraction can be made with a wave front diagram. Figure 1 (left) shows returning wave...

Magnesium in 19 Species of Eastern Canadian Holocene Foraminifera

Kenneth Hooper

Atlantic Geology

... to the environments in which the animals live, for modern environments can be -more precisely defined than ancient ones and diagenetic effects...

Uranium exploration in the Athabasca Basin using low-noise airborne gravity gradient data

Darren Burrows, James Sykes

International Meeting for Applied Geoscience and Energy (IMAGE)

... are no longer concerned with the measurable effects of the Athabasca Group-basement unconformity. However, much of the 1.7 Ga Athabasca Group has been eroded...

Influence of Structural Inheritance on the Moattama – East Andaman Basins and the Present Day Plate Boundary

Karen Connors, Cedric Jorand, Lynn Pryer

Southeast Asia Petroleum Exploration Society (SEAPEX)

...., Maurin T. and Masson F. 2013. Combined Effects of Eurasia/Sunda Oblique Convergence and East-Tibetan Crustal Flow on the Active Tectonics of Burma...

Application of time-adaptive FWI on onshore data in Bohai Bay Basin

Wan Xuejuan, Luo Wenshan, Wang Yongming, Gong Ting, Li Daoshan, Chen Yuansheng

International Meeting for Applied Geoscience and Energy (IMAGE)

... and observed data remains a major challenge for conventional FWI. In order to immune to the effects of cycle skipping in FWI, conventional methods aim...

Detachment and Basement Involved Structures Beneath the Absaroka Range Volcanics

Marvin D. Brittenham, Bruce H. Tadewald

Rocky Mountain Association of Geologists

... across Carter Mountain to the Greybull River valley. The line is an excellent example showing the effects of extreme topography, ranging from 5500 ft...

The CO2CRC Otway Project: Completion of CRC-2

PESA Staff

Petroleum Exploration Society of Australia (PESA)

... the way to the surface. with minimal well bore storage effects. This From the surface, 7.5 t/d of pure C0 2 wil l be setup will also reduce...

Core-Log Transformations and Porosity-Permeability Relationships: Part 5. Laboratory Methods

Walter A. Nagel , Keith A. Byerley

AAPG Special Volumes

... (appropriate for describing porous media, such as filter packs, in which the grains are spherical, uniform in size, and unconsolidated) suggests that a log...

Abstract: Comparison of Low-Frequency Data from Co-Located Receivers Using Frequency Dependent Least-Squares-Subtraction Scalars; #90172 (2014)

Kevin W. Hall, Gary F. Margrave, Malcolm B. Bertram

Search and Discovery.com

... wide bandpass filter windows from 2-10 Hz in 0.1 Hz increments. Data preparation We were unable to use the raw uncorrelated data as originally intended...

Abstracts: Making New with Old: Reprocessing Vintage Seismic Data from the Western Arctic Islands using Modern Methods; #90173 (2015)

Mathieu J. Duchesne, Virginia I. Brake, and Tom Brent

Search and Discovery.com

... the negative effects that have local changes in the band-pass of data. The lateral continuity of the reflections was enhanced by using a combination...

A Dynamic Approach to Evolution of Low Permeability Gas Accumulations in the Greater Green and Wind River Basins, Wyoming, by Randal L. Billingsley and Maria Wood Henry

Search and Discovery.com

Autotracking Horizons in Seismic Records, by Satinder Chopra and Kurt J. Marfurt; #41489 (2014).

Search and Discovery.com

A New Method for Determining Paleocurrent Direction Using Imaging Log, #42407 (2019).

Pengyun Zhang, Jianmeng Sun,

Search and Discovery.com

... caused by borehole inclination, irregularities, and mud cakes, and restore the true depth of the logging data. 3 4 Common method : Kalman filter c...

A Dynamic Approach to Evolution of Low Permeability Gas Accumulations in the Greater Green and Wind River Basins, Wyoming, by Randal L. Billingsley and Maria Wood Henry; #90042 (2005)

Search and Discovery.com

Ultra-Deep Resistivity 3D Inversion Reveals Third Dimension of Faulted Turbidite Sand, Deepwater Sabah, Malaysia

Keng Hung Kok, Sze Fong Kho, Subashini Paramanathan, Angelina Jia Hui Ting, Valsan Vevakanandan, Anna Numpang, Doreen Dayah, Roslan Mokhtar, Mohd Nazmi Othman

Unconventional Resources Technology Conference (URTEC)

... as seen in the 1D inversion (Fig. 8 – top). The areas where the 1D inversion had very high misfits, ie. red due to 3D effects (Fig. 8 – top), the oblique...

The Effects of Paleotopography and Substrate Lithology on the Origin of Waulsortian Reefs: South-Central Sacramento Mountains, New Mexico

Peter G. George , Wayne M. Ahr

GCAGS Transactions

...The Effects of Paleotopography and Substrate Lithology on the Origin of Waulsortian Reefs: South-Central Sacramento Mountains, New Mexico Peter G...

Using and Improving Surface Models Built by Computer: Part 8. Integrated Computer Methods

David E. Hamilton

AAPG Special Volumes

.... This wobble is due to noise in the seismic data and is usually undesirable. Many filter programs allow surface models other than the one being filtered...

Experimental Formation of Spiky Calcite through Organically Mediated Dissolution

Brian Jones, S. George Pemberton

Journal of Sedimentary Research (SEPM)

.... Each crystal was placed on a piece of filter paper which in turn was placed in a Pyrex glass dish 9.8 cm in diameter and 7.5 cm high. Each dish...

Abstract: Multi-component or Vector Dip Filtering Using the S-transform; #90187 (2014)

Kristof De Meersman and Majda Mihoub

Search and Discovery.com

... to create a multi-component dip filter that removes unwanted ground roll noise from the data. Local dip is estimated using data from all 3 components...

Health effects from arsenic in groundwater of the Bengal delta: Effects of iron and water storage practices

Anitha Kumari Sharma, Jens Christian Tjell, Hans Mosbk

Environmental Geosciences (DEG)

...Health effects from arsenic in groundwater of the Bengal delta: Effects of iron and water storage practices Anitha Kumari Sharma, Jens Christian...

Spatial Analysis of Basement and Cover Linears by Optical Diffraction - Methods, Results, and Interpretation

Howard J. Pincus, Thomas W. Doe

Utah Geological Association

... for production of transforms and filtered images (Pincus, 1969b, Fig. 1, p. 265). Spatial filter is inserted in the transform plane. Figure 2...

Does Local Resuspension Maintain the Benthic Nepheloid Layer in Southeastern Lake Michigan?

Nathan Hawley , Barry M. Lesht

Journal of Sedimentary Research (SEPM)

... in the center of the southern basin (Fig. 1). The maximum wave period recorded during any of the deployments was 6.8 s. Linear wave theory shows that the effects...

Cascaded Sweeps- A Method to Improve Vibroseis Acquisition Efficiency: A Field Test

M. Benabentos, F. Ortigosa, N. Moldoveanu, P. Munoz

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... attenuation. The precorrelation noise filter is based on the assumption that the signal is the same in different data segments except for the phase. This allows...