Technique and Methods of Geophysical Exploration in Canada

A. I. Bogdanov

Petroleum Geology: A Digest of Russian Literature

... of a spring, and has a system for dampening microseisms. The instrument is very stable; drift of zero is generally less than 0.5 mgl per month. Dreyfus effect...

Marine Multicomponent Seismic – The New Issues in the Developing Revolution

Jason Robinson

Indonesian Petroleum Association

... consist of a hydrophone, a vertical geophone and two horizontal geophones oriented perpendicular to one another. Conventional marine towed streamers...

The Effect of Sample Volume on Micro-Rebound Hammer UCS Measurements in Gulf Coast Cretaceous Carbonate Cores

Donnie Brooks, Xavier Janson, Chris Zahm

GCAGS Journal

... and propagated through the equation of Zahm and Enderlin (2010). The Effect of Sample Volume on Micro-Rebound Hammer UCS Measurements in Gulf Coast...

Bottom Cable 3-D Seismic Operations in the Transition Zone

Ezhar Manaf, Bambang Indroyono, Peter C. Johnson, James A. Musser

Indonesian Petroleum Association

... unusable, a Patch 3-D design was developed with hydrophone cables on the seafloor and geophone cables on the beach to record data up to and under...

Velocity Logging and Its Geological and Geophysical Applications

H. R. Breck, S. W. Schoellhorn, R. B. Baum

AAPG Bulletin

... by well geophone data alone, and are rapidly replacing the conventional well velocity survey. Other geophysical applications include seismic reflection...

Abstract: Interferometric Assessment of Clamping Quality of Borehole Geophones; #90224 (2015)

Yoones Vaezi and Mirko van der Baan

Search and Discovery.com

... of deep experiments due to proximity to the treatment zone. Borehole geophone strings are typically clamped to the observation wellbore wall using...

ELECTRONIC COMPUTERS AID IN EXPLORATION DECISIONS AND INTERPRETATIONS

E. J. Assiter

Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)

... is then admitted to the problem in order to detect any significant effects it may have on the solution. The usual effect will be to destroy the grid pattern...

Image processing of jointly acquired 3D DAS-VSP data with an OBN survey in the Middle East

G. Yu, H. Liu, Y. Zhang, H. Chen, X. Li, L. Duan, G. Cambois, J. Cowell, J. Mason, Y. Chen, J. Wu

International Meeting for Applied Geoscience and Energy (IMAGE)

... procedure, joint domain full waveform inversion (JDFWI) for velocity model update, and one way wave equation multiple migration (OWEMM) method were...

Horizontal Wave Testing, by Bob Hardage, #40502 (2010).

Search and Discovery.com

Limitations on Resolution of Seismic Reflections and Geologic Detail Derivable from Them: Section 1. Fundamentals of Stratigraphic Interpretation of Seismic Data

Robert E. Sheriff

AAPG Special Volumes

... relations rather than underneath the locations at which the data are observed. Wave-equation migration clarifies stratigraphic evidences End_Page 3...

Land 3D Acquisition Techniques Related to S.E. Asian Situation

Walter Ritchie

Indonesian Petroleum Association

..., the rationale for the development of 3D seismic, currently uses scaler wave equation consistent algorithms based on either finite difference...

Application of Transport Equations to Groundwater Systems: Discussion

John Bredehoeft

AAPG Special Volumes

... into account changes in fluid density. If you are willing to say the changes in density are small and have a negligible effect in the equation of motion...

Abstract: How to Improve Location Accuracy When Dealing with Artifacts in Microseismic Event Locations; #90187 (2014)

N. Verkhovtseva

Search and Discovery.com

... distribution. There are a few types of artifacts such as an arching effect when events are smeared out around the toolstring in the map view...

ABSTRACT: Challenges of Well Completion & Testing in High Pressure High Temperature Environment- Case Study of ONGC; #90118 (2011)

A. K. Mishra, M. Rastogi, S. K. Vij, B. Ravishankar, and Dr. Ramashish Rai

Search and Discovery.com

... stresses are expected. The effect of HPHT conditions on packers, elastomers, sliding sleeves, injection subs, mechanical & fluid friction...

Abstract: Casing Integrity During Fracturing Operations; #90187 (2014)

Don Getzlaf

Search and Discovery.com

... will be analyzed. The author will present various fracturing techniques that can reduce the net effect of the various influencing factors...

Impact of Seismic Attenuation on Downhole Microseismic Moment Tensor Inversion

Donghong Pei, Natalia Verkhovtseva, Jon Doucette, Price Stark

Unconventional Resources Technology Conference (URTEC)

... inversion (MTI). Though there are many other factors that also have an impact on MTI. This study focuses on the effect attributed to seismic attenuation...

erformance of Seismic Arrays in the Presence of Weathering Layer Variations, #41841 (2016).

Jubran Akram, Abdullatif A. Al-Shuhail

Search and Discovery.com

... traveling signal. We investigate the effect of variations in the near-surface layer thickness on the performance of arrays by studying their impulse...

Microseismic Event Location Using Multiple Arrivals: Demonstration of Uncertainty Reduction

Zhishuai Zhang, James W. Rector, Michael J. Nava

Unconventional Resources Technology Conference (URTEC)

... location. This will eliminate the necessity for polarization which has large uncertainty due to poor geophone-borehole coupling, multiple arrivals...

Abstract: Attenuation Compensation in Least-Squares Reverse Time Migration Using the Visco-Acoustic Wave Equation, by Gaurav Dutta; #90182 (2013)

Search and Discovery.com

Analyzing the impact of additive and multiplicative noise on seismic data analysis

Akshika Rohatgi, Andrey Bakulin, Sergey Fomel

International Meeting for Applied Geoscience and Energy (IMAGE)

..., single-sensor land seismic data often exhibit intricate noise patterns (Figure 1a). Employing local stacking techniques, whether via a geophone array...

Formation Damage: Chapter 10

Sada D. Joshi

AAPG Special Volumes

... Damage Equations after Sparlin and Hagen, World Oil, November 1988. [EQUATION] where ks = damage zone permeability d = damage zone thickness qd...

Contributions of Compaction and Aquathermal Pressuring to Geopressure and the Influence of Environmental Conditions (1)

XIAORONG LUO and GUY VASSEUR

AAPG Bulletin

... in the brackets on the left side: (Equation; SEE PAGE IMAGE) and the second term on the right side: (Equation; SEE PAGE IMAGE) represent the effect...

The Development of an Implicit Flow Model for Predicting the Flow Performance of High Viscosity Oil and Water in Pipelines

Leksono Mucharam, Budhira Lumban Tobing

Indonesian Petroleum Association

..., the pressure profile can be written as: This flow equation is a function of both pressure and temperature, and includes the effect gravitational force...

3D installation of fiber cables for acquiring 3C DAS array data

Yingping Li, David Li, Lianjie Huang, Yingcai Zheng

International Meeting for Applied Geoscience and Energy (IMAGE)

... for the fiber directivity effect, perfectly match with those of the geophone at the DAS array center (0, 0). a seismic source shown in Figures 3a and 3d...

Resistivity Logs: Chapter III

George B. Asquith, Charles R. Gibson

AAPG Special Volumes

... a formation's water saturation (Sw) from the Archie equation: [EQUATION] Where: Sw = water saturation F = formation factor (a/m) a = tortuosity factor m...