Pharmacosiderite and Unusual Samples of Scorodite from Peninsular Malaysia

K. F. G. Hosking, E. B. Yeap

Geological Society of Malaysia (GSM)

... generator (PW10ll) with the detector coupled to a scintillation counter. X-rays were generated using a copper target, a nickel filter, a voltage of 50...

The Midale Beds Log-Core Correlations in Tatagwa Oil Field, Southern Saskatchewan, Canada

A. Matiisen, M. Shehata

CSPG Bulletin

.... The core depths were corrected by matching core and the down-hole log gamma rays. Standard sonic porosity and deep induction resistivity logs were...

Dip or Strike? … Complimenting Geophysical Sampling Requirements and Acquisition Efficiency for Towed Streamer Marine Seismic

Martin Bayly, Low Cheng Foo, Michelle Tham, M Nabil El Kady, Saeeda Hydal, Thomas Olanrenwaju Ajewole, Nigel Seymour, Satyabrata Nayak, Bidyut Chowdhury, M Faizal Idris, Sandeep K Chandola, M Iqbal Supardy

Indonesian Petroleum Association

... component and signify considerable 3D obliquity of rays arriving at the receivers in either dip or strike acquisition directions. 3D ray tracing was also...

Imaging a San Andres Reservoir with Interwell Seismic

James H. Justice, J. Craig Woerpel

West Texas Geological Society

... of X-ray absorption (bones absorb X-rays much more strongly than tissue, for example, and so the two can easily be discerned), the interwell seismic...

Cosmic-ray muon tomography: New developments for near-mine exploration and geotechnical applications

Douglas Schouten, Jared Townsend, Nigel Phillips, Reid Merrill

International Meeting for Applied Geoscience and Energy (IMAGE)

... in space. Cosmic rays collide with matter in the Earth’s upper atmosphere to create muon flux that travels to Earth in straight lines at almost the speed...

Residual Gas Saturation Estimation using Cased-Hole Pulsed-Neutron Log; A Case Study on MF4 and Y-Channel Reservoir, Peciko Field, Mahakam Delta

Anang Karana, Taufik Anwar, Radya Senoputr, Moch Rushatmanto, Supriady

Indonesian Petroleum Association

..., the neutron continues to make collisions. Eventually, the neutron is captured with the emission of gamma ray. The energy spectrum of these gamma rays...

Dolomite Growth in Coralline Algae

Seymour O. Schlanger

Journal of Sedimentary Research (SEPM)

..., would be too small to be resolved by X-rays. 3. Through time the dolomite nuclei, evidently more stable than the surrounding Ca-Mg solid solution...

Studies on Bacterial Precipitation of Carbonates in Sea Water

Claude Lalou

Journal of Sedimentary Research (SEPM)

... by X-rays, which have not yet been carried out very far, gives, however, some interesting results. It seems that the microcrystallization and the fine...

The Global Offset Seismic Approach: Improving Seismic Imaging In Complex Geological Settings

Paolo Dell'Aversana

Petroleum Exploration Society of Australia (PESA)

..., at the same time, the seismic data set as much as possible. Also near-critical and post-critical reflection s a nd long-offset turning rays are included...

Application of Machine Learning to Predict Cementation Factor along Well Intervals and its Implications for Sand Problem, Study Case: Wanda Complex Field, Indonesia

Aditya Wicaksono, Alfigo Tryozi S. Z., Bhaskara Aji, Leonardus Gilang Ginting P., Arif Yondo

Indonesian Petroleum Association

... factor prediction using machine learning (Anifowose et. al, 2019). Some preprocessing steps, such as normalizing gamma rays and converting deep...

Visualizing Fracture-Matrix Fluid Exchange in Unconventional Tight Mudstone

John J. Valenza, Johnathan Moore, Sean Sanguinito, Dustin Crandall

Unconventional Resources Technology Conference (URTEC)

... tomography techniques. Xenon gas, which attenuates x-rays, was utilized to visualize the spatial distribution of the invading fluid in the rock...

Geologic and Geoscoustic Study of Surficial Deposits, North-Central Gulf of Mexico Continental Shelf

Triniti A. Dufrene, Samuel J. Bentley, Yvonne C. Allen

GCAGS Transactions

... (acoustic reflectance). At each boxcore location within the muddy site, X-radiography samples were taken. These x-rays were collected by inserting a thin...

Anthropologist Hunting Dragon Gas

PESA Staff

Petroleum Exploration Society of Australia (PESA)

... students well not to worry too taking x-rays of ultrasonic tests with a petroleum industry service company. He fairly quickly got get a degree and see...

Miocene Lower Vertebrates from Fort Polk, LA: a Preliminary Report

Michael J. Williams, Judith A. Schiebout

GCAGS Transactions

... found, although some rays are found in coastal rivers. Catfish spines, probably assignable to Ictalurus punctatus, are abundant in the screened...

Recent Dedolomitization and the Origin of the Rusty Crusts of Northumberland: REPLY

W. S. Al-hashimi , J. E. Hemingway

Journal of Sedimentary Research (SEPM)

...; also Howie and Broadhurst, 1958). The second difference, as explained by Goldsmith and Graf (1958), results from the increase of scattering of X-rays...

Consideration to Data Driven Solutions for the Acquisition of New Marine 3D Seismic Data

Julie Willmore, Brad Torry, Henrik Roende, Chris Egger, Adriana Thames

GCAGS Transactions

... subsurface point is sampled and from which directions and offsets the rays have traveled). Rose diagrams are then computed for each subsurface point...

Identification of Mineral Particles in Fine Grained Lacustrine Sediments with Transmission Electron Microscope and X-Ray Energy Dispersive Spectroscopy

A. Mudroch , A. J. Zeman, R. Sandilands

Journal of Sedimentary Research (SEPM)

... marine clay mineral identification by scanning electron microscopy and energy-dispersive X-rays analysis: Limnology and Oceanography, v. 20, no. 1, p...

Clay Mineralogy of Morrison Formation, Black Hills Area, Wyoming and South Dakota

Ronald Warren Tank

AAPG Bulletin

... in stratigraphic section III and IV, and all carbonates were removed from sections I and II before X-rays were made. Three types of clay minerals--illite, kaolinite...

Factors in Age Determination of Carbonate Sediments by Thermoluminescence

Edward J. Zeller , John L. Wray , Farrington Daniels

AAPG Bulletin

..., and the other is produced by radiation damage with gamma rays or other high energy radiation. The two types of thermoluminescence are affected...

Formation of Ripple Bands in a Wave-Convergence Zone

K. P. Black , T. R. Healy

Journal of Sedimentary Research (SEPM)

... a reverse tracking option and finds heights along the rays and also computes the largest sand grain that could be moved due to the bed-wave-orbital...

A Cathodoluminescence Microscope for Low Intensity Luminescence: RESEARCH METHOD PAPER

Karl Ramseyer , Josef Fischer, Albert Matter , Peter Eberhardt, Johannes Geiss

Journal of Sedimentary Research (SEPM)

... high voltages and filaments at pressures above 10-3 Pa. A lead casing around the sample chamber protects the operator from X-rays produced...

X-Radiography of Horizontal Core Slabs: A Method for Greater Retrieval of Sediment Core Data: RESEARCH METHOD PAPER

Sanford L. Britt, David J. Bottjer, Alfred G. Fischer, James G. Flocks, Donn S. Gorsline

Journal of Sedimentary Research (SEPM)

.... 604-605. STURMER, W. AND BERGSTROM, J., 1973, New discoveries on trilobites by x-rays: Palaontologische Zeitschift, v. 47, p. 104-141. ZANGERL, R...

The Role of Magnesium in the Crystallization of Calcite and Aragonite in a Porous Medium

Lurdes Fernandez-Diaz , Andrew Putnis , Manuel Prieto , Christine V. Putnis

Journal of Sedimentary Research (SEPM)

... the Ca K X rays emitted from the sample to reveal the zoning. The darker parts of the crystal are richer in Mg than the lighter parts, and in the crystal...

Frequency-Domain Waveform Tomography in the Foothills: Velocity Model Estimation with Synthetic Long-Offset Data

Search and Discovery.com

...)), illustrating the first-arrival ray paths of the diving wave energy within our model. Several shadow zones can be seen through which no rays pass...

Abstract: Cost Efficient Acquisition to Reduce Coarse Land 3D Line Spacings Through Beyond Nyquist Interpolation and Wavefield Reconstruction for Signal and Noise; #90187 (2014)

Bill Goodway

Search and Discovery.com

... information to reconstruct a version of the finely sampled continuous wavefield that would have been recorded at the surface. Neither rays nor the convolutional...