An integrated wireless system for long-term and real-time subsurface CO2 monitoring

Xiaoliang Li, Chenpei Huang, Miao Pan, Xiaonan Shan, Jiefu Chen

International Meeting for Applied Geoscience and Energy (IMAGE)

... wireless monitoring system: 1. Effect of turns of the coil. 2. Effect of AWG wire (different wire radius). Fig.4a shows the receiving voltage signal...

Deep Electrical Prospecting

J. C. Karcher , Eugene McDermott

AAPG Bulletin

... with inductance and resistivity slope functions. Inductance is determined by measuring the time constant of the current decay. Three areas are considered. One...

Basics of Resistivity Tools - Application of Resistivity-Tool-Response Modeling for Formation Evaluation - Archie Series No. 2

Hezhu Yin

AAPG Special Volumes

... parts being equivalent. After the mutual inductance is removed through careful bucking-coil design or digital data filtering and processing, the X signal...

Numerical modeling of PP and PS reflections in DAS VSP

Joseph J. Cherayil, James L. Simmons

International Meeting for Applied Geoscience and Energy (IMAGE)

.... The elastic wave equation was used to analyze both the PP and PS reflections. Geophone particle velocities (Vx and Vz ) were converted to the DAS...

ABSTRACT: Investigation of the Behavior of Surface Noise within Seismic Arrays of Variable Geophone Density; #90051 (2006)

Ibrahim A. Al-Hokail

Search and Discovery.com

... of non-organized noise manifested by decreasing array efficiency attenuating the noise beyond a certain intra-geophone distance. The effect...

Observations of geophone spurious resonance

Steve Hearn, Shaun Strong, Andrew Kinmont

Petroleum Exploration Society of Australia (PESA)

...Observations of geophone spurious resonance Steve Hearn, Shaun Strong, Andrew Kinmont Observations of geophone spurious resonance Steve Hearn* Shaun...

Investigation of the Behavior of Surface Noise within Seismic Arrays of Variable Geophone Density

Search and Discovery.com

Obtaining near-surface equivalent Q value from uphole survey data

Chaofeng Zhao, Wei Zhang, Jiantao Tian, Liying Ren, Qing Zhang, Jianyu Zhao

International Meeting for Applied Geoscience and Energy (IMAGE)

..., and establish the near-surface equivalent Q value equation that eliminates the inconsistency of the seismic wavelets and geophone coupling effect...

Pulsed Power Plasma Stimulation Technique … Experimental Study on Single Pulse Test for Fractures Initiation

Yue Xiao, Waylon House, Ebru Unal, Mohamed Soliman

Unconventional Resources Technology Conference (URTEC)

..., and tubing perforations. Their purpose was to test the effect of the high-pressure shockwave over a range mimicking common rock properties and current...

A Novel Method of Deriving Weathering Statics from First Arrival Refractions

G. W. Hollingshead, R. R. Slater

Pacific Section of AAPG

... the interpolation of intercepts between shot points or the simple splitting of these values to separate the shot and geophone components. Some effort is required...

Numerical simulation study on borehole time-domain electromagnetic forward-sighted and far-sighted methods of magnetoelectric mixed mode

Zhanshan Xiao, Haitao Hu, Kun Shao, Chunming Yao, Junjie Yan, Caihuan Yuan, Huiying Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... of its detection is the geological information parallel to the coil surface, that is, the geological information in front of the detector. For the...

Shooting Seismic in Linked Circles

Lasse Amundsen, Martin Landrø

GEO ExPro Magazine

... ørdnaL nitraM dna nesdnumA essaL "Coil shooting" is a cost-effective technique towards better imaging over small to medium sized exploration areas...

Complex Electrical Conductivity of Mudrocks and Source-Rock Formations Containing Disseminated Pyrite

Siddharth Misra, Carlos Torres-Verdin, Dean Homan, John Rasmus,

Unconventional Resources Technology Conference (URTEC)

...tio of complex-valued induced receiver voltage in the j-th coil and the current flowing in the i-th transmitter coil. 𝐾 𝑖𝑗 used in Equation 3 is compu...

From geophone arrays to point receivers: Implications for sensor and land survey design

Nicolas Goujon, Tom O’Toole

International Meeting for Applied Geoscience and Energy (IMAGE)

... effect of geophone arrays masking the effect. So, arrays can help, but will still contain a perturbation due to variations in sensor response within...

Verification of dynamic strain field measurements made with DAS during active-source vibration by quantitative comparison to geophones

Peter G. Hubbard, Joseph Vantassel, Brady R. Cox, James W. Rector, Michael Yust, Kenichi Soga

International Meeting for Applied Geoscience and Energy (IMAGE)

... and uncertainties in the locations of DAS channels relative to geophone positions. This study serves to demonstrate the consistency that can be achieved...

Methods for reducing unwanted noise (and increasing signal) in passive seismic surveys

Tim Dean, Aidan Shem, Mus'ab Al Hasani

Petroleum Exploration Society of Australia (PESA)

...,  Signal strength. If the signal, after the application of the effect of the geophone response, drops below the instrument noise level...

Annulus Cementing with Coil Tubing Packer Methods with Case Study on Sisi Nubi Field

Ramadhani Rachman, Izzad Abidy

Indonesian Petroleum Association

...Annulus Cementing with Coil Tubing Packer Methods with Case Study on Sisi Nubi Field Ramadhani Rachman, Izzad Abidy IPA20-E-100 PROCEEDINGS...

Resolving DAS versus geophone discrepancies using the DAS transform: A comparative study from the CaMI CCS field research station, Alberta

Ali Sayed, Robert R. Stewart, Marie Macquet, Don Lawton

International Meeting for Applied Geoscience and Energy (IMAGE)

...he 15 to 100 Hz bandwidth. Higher frequencies on the DAS data are filtered down due to the gauge length effect (equation 1). The DAS spectral ratio ...

Different Approaches of Combining Geophone and Hydrophone Data From OBC Seismic at Bintuni-Berau Bay, Papua

Tepy Septyana, Yayat Supriatna, Supriyono, Greg Schurter, James Keggin, Jean-Jacques Chameau

Indonesian Petroleum Association

... the calibrated geophone and the hydrophone response into a direction where the ghost effect is removed. In other words, the hodogram determines...

Using Multiple Downhole VSP Arrays for Monitoring and Locating Passive Microseisms in the Oil Reservoirs; #41561 (2015)

Zuolin Chen

Search and Discovery.com

... monitoring network composed of multiple VSP downhole geophone arrays in the surrounding wells is calculated. Error analysis illustrates...

Influence of Geological Factors on Longitudinal Seismic Velocities

B. B. Weatherby , L. Y. Faust

AAPG Bulletin

... of calcareous sandstones and shales is substantially higher than that of a normal sand-shale section. The effect of depth on the velocity of a given...

Abstract: Borehole Vibration Response to Hydraulic Fracture Pressure; #90187 (2014)

Andy St-Onge, David W. Eaton, and Adam Pidlisecky

Search and Discovery.com

... vibrations of the casing. The resonant vibrations are linked to the geometry of geophone arrays, which are clamped to the borehole casing with sufficient...

Refraction Statics, A Comparison Among Processing Contractors

Bambang Sudewo

Indonesian Petroleum Association

... using equation (3) and geophone statics with datum elevation D and geophone station elevation E. Shot statics Ss = Gs + Tuh with uphole time Tuh...

Abstracts: Borehole Geophone Repeatability Experiment; #90173 (2015)

Peter G. Gagliardi and Don C. Lawton

Search and Discovery.com

... was undertaken on the horizontal components of the data in order to determine the geophone orientation in the well. This was performed using the equation: 2X Y...

Abstract: Estimation of Dispersive Parameters of Surface Wave Using the Generalized S Transform; #90187 (2014)

Roohollah Askari and Robert J. Ferguson

Search and Discovery.com

...) Equation 12 can be explained by the effect of noise at low frequency components where the signal to noise ratio is small. At those frequencies, initial...