"Productive Low Resistivity Well Logs of the Offshore Gulf of Mexico": Causes and Analysis

Harold L. Darling, Robert M. Sneider

New Orleans Geological Society

... reservoirs and its effect on sandstone shaliness, pore space, and fluid flow properties: Society of Petroleum Engineers Paper No. 6858 presented...

Granite and Limestone Velocity Determinations in Arbuckle Mountains, Oklahoma

B. B. Weatherby, W. T. Born, R. L. Harding

AAPG Bulletin

... of the rod, which was supported by a clamp at its center. A permanent magnet around which a coil was wound was placed in line with the bar and near...

Abstracts: True-Amplitude PS Prestack Time Migration via 5D Interpolation; #90173 (2015)

Peter W. Cary, Albert Zhang

Search and Discovery.com

... CSPG/CSEG/CWLS GeoConvention 2011, Calgary, Alberta, Canada, May 9-11, 2011 square root equation of converted wave travel-time using four parameters...

Estimation of Natural Gas Reserves

P. McDonald Biddison

AAPG Special Volumes

... were a short time ago considered exceptional, the indications are that they will become common. It is in these deep well conditions that the effect...

A New Log: The Induction-Electrical Log Combination

C. A. Doh , M. P. Tixier

GCAGS Transactions

...-magnetic field generated by a transmitter coil and centered on the induction logging tool. "Eddy" currents produced by this field in the formation induce...

Relationship of Porosity and Permeability to Various Parameters Derived from Mercury Injection-Capillary Pressure Curves for Sandstone (1)

EDWARD D. PITTMAN

AAPG Bulletin

.... 92, p. 599-607. Kolodzie, S., Jr., 1980, Analysis of pore throat size and use of the Waxman-Smits equation to determine OOIP in Spindle Field...

Simultaneous Inversion for Microseismic Event Location and Velocity Model in Vaca Muerta Formation

Zhishuai Zhang, Jing Du, Fuchun Gao

Unconventional Resources Technology Conference (URTEC)

... of this method to a typical microseismic acquisition geometry, that is, the microseismic monitoring with a geophone array deployed within a single vertical well...

Low-Base Frequency Helicopter AEM Data from a Square-Wave System -Helitem2

Adam Smiarowski, Graham Konieczny

Petroleum Exploration Society of Australia (PESA)

... a challenge with airborne EM methods. Although modern systems have been improved with greater primary transmitter moments, noise from receiver coil...

Athabasca Oil Sands Exploration and Development Investigation Using the Helicopter-Borne Transient Electromagnetic Technique

Search and Discovery.com

..., to electrical and inductance logging in that they provide useful information about geo-electrical contrasts between the geological horizons of interest where...

How to Make Velocity Corrections

John W. Daly

AAPG Bulletin

...How to Make Velocity Corrections John W. Daly 1944 615 628 28 5. (May) The fundamental assumptions in regard to velocity distribution and the effect...

Diagnostic Applications of Borehole Hydraulic Signal Processing

Connor J. Clark, Jennifer L. Miskimins, Dana L. Gallegos

Unconventional Resources Technology Conference (URTEC)

...) to solve the system and model field data, iteratively determining fracture capacitance, resistance, and inductance. Carey et al. (2015, 2016...

Fracture-Porosity Identification from Anisotropy AVO and Fluid Substitution Modelling in Seismic 2D Data

Septian Prahastudhi, Tenny Octaviani, Ayi Syaeful Bahri, Yulia Putri Wulandari

Indonesian Petroleum Association

... properties of crack (D) and anisotropy gradient (Gan). The crack properties can be computed after fluid replacement modeling using Gassmann Equation to find...

Sub-seafloor reflectivity estimation by upgoing wavefield deconvolution

Hassan Masoomzadeh, Tim Seher, M. A. H. Zuberi

International Meeting for Applied Geoscience and Energy (IMAGE)

... and geophone data to estimate both upgoing and downgoing wave fields. These wavefields contain various orders of data, beginning with direct arrivals...

Induction-Electrical Logging in Oklahoma

H. W. True

Oklahoma City Geological Society

... a better determination of true resistivity. The induction log minimizes the effect of the mud column. Effects of adjacent beds on the bed under study...

Effect of Moisture Upon Velocity of Elastic Waves in Amherst Sandstone

W. T. Born, J. E. Owen

AAPG Bulletin

...Effect of Moisture Upon Velocity of Elastic Waves in Amherst Sandstone W. T. Born, J. E. Owen 1935 9 18 19 1. (January) Laboratory measurements...

Impacts of Geochemical Properties on Wettability of Kerogen and Organic-rich Mudrocks

Archana Jagadisan, Zoya Heidari

Unconventional Resources Technology Conference (URTEC)

... shown to be water-wet at low thermal maturity (Jagadisan and Heidari 2018), however, the effect of kerogen wettability on the wetting affinity...

Combined elastic FWI of accelerometer and DAS VSP data from a CO2 sequestration test site in Newell County, Alberta

Matthew Eaid, Scott Keating, Kristopher Innanen

International Meeting for Applied Geoscience and Energy (IMAGE)

..., and is more sensitive to low frequencies than many geophone systems. For these reasons, DAS data are in principle ideal for use in FWI. However, standard...

Elastic multiparameter full-waveform inversion application on sparse ocean-bottom node data

Denes Vigh, Xin Cheng, Bing Bai, Zongcai Feng, Kate Glaccum

International Meeting for Applied Geoscience and Energy (IMAGE)

... distort the results if the acoustic wave equation is employed. Increased physics in FWI allows us to interrogate the power of elastic FWI versus...

Laboratory Orientation of Well Cores by Their Magnetic Polarity

Edward D. Lynton

AAPG Bulletin

... as to be as far as possible from the magnetic effect of the Pacific Electric Railway and other sources of disturbance. Since the instrument...

Vertical Seismic Profiling in Hydrocarbon Exploration and Reservoir Development

Bob A. Hardage

Circum Pacific Council Publications

... wavefields which propagate through a stratigraphic section near the well. These subsurface geophone measurements commonly image the subsurface near...

Production of Low Resistivity, Low Contrast Reservoirs, Offshore Gulf of Mexico Basin

Harold L. Darling , Robert M. Sneider

GCAGS Transactions

... effect on sandstone shaliness, pore space, and fluid flow properties: Society of Petroleum Engineers 52nd Annual SPE Meeting Paper no. 6858, 8p. Sneider...

AVA on communication cables: Principles and Examples from the North Sea

Ran Bachrach, Ali Sayed, Andrea Murineddu, Pilar Di Martino

International Meeting for Applied Geoscience and Energy (IMAGE)

... specific corrections to compensate for the gauge length (GL) effect and convert the DAS recording to particle velocity (Bachrach et al., 2023). After...

Definition, Identification, and Measurement of Normal and Abnormal Subsurface Pressures

Donald J. Timko, Lloyd C. Fons, William K. Grittman, Forest B. Rees

Houston Geological Society

... to the unit weight and vertical height of a column of fluid. The basic equation for the determination of hydrostatic pressure is: Size and shape...

Extending the Resolution of Seismic Reflection Exploration

L. R. Denham

Pacific Section of AAPG

... than this wavelength. The array will then have little overall effect on the desired signal. Geophone array design theory generally assumes all geophones...

Petrophysics in High Angle and Horizontal Wells

David Maggs, Silvia Lattuada, Roger Griffiths, Mauricio Mele, Antonio Valdisturlo

GEO ExPro Magazine

... under these conditions, such as coil tubing and drill pipe assisted logging, and the development of LWD tools and assemblies which have become...