Horizontal Drilling of the Cardium Sands, within the Pembina Field, Drayton Valley, Alberta - How to Circumvent a Thief Zone

I. Cooke, K. Gee, A. Bessel

CSPG Special Publications

..., A. Bessel 1995 216 216...

Effects of tool eccentricity on acoustic logging: Theory and field example

Bo Rao, Yuanda Su, Shengqing Li, Xiaoming Tang

International Meeting for Applied Geoscience and Energy (IMAGE)

..., respectively. The analytical solution of the problem is obtained by applying the translational addition theorem for cylindrical Bessel functions...

AVO Modeling of Monochromatic Spherical Waves: Comparison to Band-Limited Waves; #41567 (2015)

Charles Ursenbach, Arnim Haase

Search and Discovery.com

... that monochromatic waves have oscillatory, non-decaying weighting functions, and thus sample a wide range of plane waves. In contrast, typical Rayleigh wavelets...

Abstract: Modelling Near-field Effects in VSP-based Q-estimation Part 1: Theoretical Developments; #90171 (2013)

Arnim B. Haase and Robert R. Stewart

Search and Discovery.com

... is the horizontal slowness, ξ is the vertical slowness, J0 and J1 are zero-order and first-order Bessel functions of the first kind, r is the range...

Development of offshore microtremor array exploration

Yoshikazu Matsubara, Mikihiro Imai, Akeshi Hiraide

International Meeting for Applied Geoscience and Energy (IMAGE)

... error between observed coherencies and theoretical Bessel functions. Blue color indicates small error and red color indicates large error. Red dots...

Integral equation based wellbore preconditioner for 3D electromagnetic response modeling

Marcus Elliott, Mark Everett

International Meeting for Applied Geoscience and Energy (IMAGE)

... Bessel functions. We extracted the modified Bessel function values using a MatLAB code containing 1331201 interpolation points and stored them within...

Monopole slow formation shear head wave Greens function in a LWD borehole acoustic configuration

Tim Geerits, Stefan Schimschal, Anna Swiatek

International Meeting for Applied Geoscience and Energy (IMAGE)

... at the borehole fluid/formation ( r  RH ) and OD borehole fluid/tool interface ( r  RT ). I kn  and Kkn  represent the modified Bessel functions...

Spherical Wave Model Tests of VSP-Based Q-Estimation Techniques

Search and Discovery.com

... Bessel functions of the first kind, r is the range (horizontal offset between source and receivers), and in is the ray angle in layer n (at the current...

Multipole borehole acoustics in the presence of an constraints elastic tool

Tim Geerits, Stefan Schimschal, Anna Swiatek

International Meeting for Applied Geoscience and Energy (IMAGE)

... mode) in the quadrupole excitation on the quadrupole mode. This is done through computation of the relevant Green’s functions (excitation functions...

Application of New Type Curves Using Fractal Concept for Analyzing the Interference Test Data in Dieng Geothermal Reservoir

Doddy Abdassah, I. Nengah Suabdi, Leksono Mucharam, R. Sumantri

Indonesian Petroleum Association

...) are modified Bessel functions of the second kind of order (v+1) and (v), respectively. Equation (8) above is developed by involving several assumptions...

Wellbore Heat Transmission: A Simple Solution Technique

A. J. Durrant, R. K. M. Thambynayagam

Indonesian Petroleum Association

... equations, enabling Ramey to give the following correlations for the temperature of the injected fluid/gas as functions of time t and depth Z. Liquid Gas...

Pebble Orientation in Relation to Cross-Stratification a Statistical Study: NOTES

Shibdas Bandyopadhyay

Journal of Sedimentary Research (SEPM)

...)] if the density function of , f() is given by f(a) = [exp k cos (a - v)]/[2·I0(k)] 0 <= < 2 where 0<=v2, 0<=k< and I0(k) is a Bessel function of purely...

Statistical Analysis of Orientation Data

Thomas A. Jones

Journal of Sedimentary Research (SEPM)

.... Sedimentary Petrology, v. 33, p. 393-410. BOWMAN, FRANK, 1958, Introduction to Bessel functions. Dover Publications, Inc., New York, 135 p. CURRAY, J. R...

Extended Abstract: Water Influx Predictions in Reservoirs with Aquifer Drive Using the Two-Phase Reservoir Integral Type Pseudo-Pressure with Applicability in Gas Hydrate Reservoirs

Melvin Kome, Mohd Amro

Africa Energy and Technology Conference, 2016

......A4: 1 The Laplace transform of the above equation in combination with the Schapery representation gives: 12 ̂ ∂2 [pφD ] ∂rD 2 + ̂ 1 ∂[pφ...

Quantitative comparison of active and passive surface wave data obtained from distributed acoustic sensing (DAS) and three-component geophones

Koichi Hayashi, Hayato Nonaka, Peter Hubbard, Yasuhiro Yokota, Kensuke Date, Kazuhiko Masumoto, Takaaki Taira, Kenichi Soga

International Meeting for Applied Geoscience and Energy (IMAGE)

... of Petroleum Geologists Comparison of active and passive surface wave data obtained from DAS and geophone coherences shaped Bessel functions and dispersion...

Seismic Modeling of Reservoir Heterogeneity Scales: An Application on Gas Hydrate Reservoirs

Search and Discovery.com

... distribution functions (Kamei et al., 2005): p(V ) = ⎛ (V − μ1 )2 ⎞ (1 − w1 ) ⎛ (V − μ2 ) 2 ⎞ w1 exp ⎜ − exp ⎜ − + ⎟ ⎟ 2 2σ 12 ⎠ 2σ 2 ⎠ 2πσ 1 2πσ 2 ⎝ ⎝ (1...

Characterizing Gas Transfer from the Inorganic Matrix and Kerogen to Fracture Networks: A Comprehensive Analytical Modeling Approach

Jie Zeng, Jishan Liu, Wai Li, Lin Li, Yee-Kwong Leong, Derek Elsworth, Jianchun Guo

Unconventional Resources Technology Conference (URTEC)

... fundamental issues in shale gas extraction modeling. Existing gas transfer functions can be classified into the following categories: (1) direct single...

Data selection for velocity model estimation using a circular shot OBN survey

Felipe T. Costa, Sergio L. E. F. da Silva, Ammir A. Karsou, Felipe Capuzzo, Roger M. Moreira, Jorge Lopez, Marco Cetale

International Meeting for Applied Geoscience and Energy (IMAGE)

... to circular shot OBN surveys, comparing different objective functions and successfully retrieving structures in the Brazilian pre-salt area. Despite...

A New Model for Pressure Transient Analysis of Fractured Horizontal Wells in Shale Gas Reservoirs With Continuum and Discrete Fracture Networks

Zhiming Chen, X W. Liao, H Zhang, Wei Yu, X D. Shen, Xiaoqing Shang, J L. Zhang, Hongyang Chu, Qingling Liu

Unconventional Resources Technology Conference (URTEC)

... ) is the second kind of modified Bessel functions. With superposition principle, the dimensionless pressure difference by production of natural fractures...

Modeling the Semivariogram: New Approach, Methods Comparison, and Simulation Study

A. Gribov, K. Krivoruchko, J. M. Ver Hoef

AAPG Special Volumes

... functions, power exponential functions, and J- and K-Bessel functions were commonly used to model the semivariogram. Soviet meteorological monitoring...

A New Method for Handling the Nugget Effect in Kriging

K. Krivoruchko, A. Gribov, J. M. Ver Hoef

AAPG Special Volumes

... be formulated in terms of covariance or semivariogram functions. In either formulation, the models of spatial autocorrelation commonly exhibit similar...

Stochastic inversion based on Von Karman random medium prior model

Longdong Liu, Baoli Wang, Ying Lin, Guangzhi Zhang

International Meeting for Applied Geoscience and Energy (IMAGE)

... equation, v denotes the Hurst coefficient,  denotes the gamma function, K v is the class two Bessel function modified of order v , r is the normalized...

Pressure Transient Behavior of Unconventional Reservoirs: Combined Effect of Spatial Variation and Stress-Dependence of Formation Permeability

Ayon Kumar Das, Hassan Hassanzadeh

Unconventional Resources Technology Conference (URTEC)

.... After weakening the nonlinearity by applying Pedrosa's transformation, features of the perturbation technique and modified Bessel functions...

Forebulge Migration: A Three-dimensional Flexural Numerical Modeling and Subsurface Study of Southwestern Wyoming

Hongjun Luo, Dag Nummedal

AAPG Special Volumes

... to Bessel-Kelvin functions:where = [D/ρg]1/4/1000 (km); ρ = density of load (basement) (2800 kg/m3); a = radius of disc load; ker, kei, ker, kei, ber, bei...

Multi-scale anisotropic dispersion and attenuation in VTI media with penny-shaped cracks

Yanwen Feng, Zhaoyun Zong, Guangzhi Zhang

International Meeting for Applied Geoscience and Energy (IMAGE)

... cracks order Bessel functions, respectively,   3i  2 K f ,  is frequency,  is the fluid viscosity. E f is additional strain caused by interlayer...