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Petrophysics 62 (06): 651–669.
Paper Number: SPWLA-2021-v62n6a5
Published: 01 December 2021
... thickness of the unit. A typical well intersects 10 to 20 m of net coal over a 200- to 300-m interval, interbedded with lithic-rich sandstones, siltstones, and carbonaceous mudstones. The presence of such a significant section of lithic interburden within the primary production section has led to a somewhat...
Juan Alejandro Angel Restrepo, Ricardo Andrés Gómez-Moncada, Carlos Alberto Mora Sánchez, Ricardo Bueno Silva
Petrophysics 62 (02): 156–174.
Paper Number: SPWLA-2021-v62n2a2
Published: 01 April 2021
... of the Bouma sequence as observed in the cored intervals. Bouma divisions Td and Te are related with the lowest rock quality and represent the nonreservoir intervals. The greatest challenge in the characterization of this particular reservoir is the vertical resolution, given the very low thickness...
Hamid Hadibeik, Mehdi Azari, Mahmoud Kalawina, Sandeep Ramakrishna, Sami Eyuboglu, Waqar Khan, Mona Al-Rushaid, Hamad Al-Rashidi, Munir Ahmad
Petrophysics 59 (02): 234–244.
Paper Number: SPWLA-2018-v59n2a8
Published: 01 April 2018
... Fluid Dynamics april 2018 Halliburton estimation integration Modeling & Simulation downhole estimation relative permeability hadibeik petrophysics april 2018 relative permeability curve Upstream Oil & Gas Thickness permeability curve saturation formation-tester measurement flow...
Petrophysics 58 (06): 559–563.
Paper Number: SPWLA-2017-v58n6a6
Published: 01 December 2017
... or steps or truisms." 1 12 2017 1 12 2017 2017. Society of Petrophysicists & Well Log Analysts log analysis Thickness porosity correction resistivity resolution borehole uphole digital well log Upstream Oil & Gas variation Computation interpretation petrophysics...
Petrophysics 57 (03): 251–269.
Paper Number: SPWLA-2016-v57n3a3
Published: 01 June 2016
...Min Yang; Daoyong Yang Techniques have been developed to investigate the impact of effective thickness on permeability interpretations by numerically modeling and simulating the pumpout flow pressure buildup dynamics obtained from a wireline formation testing (WFT) process. A high-resolution near...
Petrophysics 56 (05): 479–492.
Paper Number: SPWLA-2015-v56n5a4
Published: 01 October 2015
...Doug Patterson; Alexei Bolshakov; Pawel J. Matuszyk The importance of cement evaluation has steadily increased as the oil and gas industry strives to ensure and verify zonal isolation. Evaluation must address a broad spectrum of downhole conditions that include various casing thicknesses, mud...
Petrophysics 56 (05): 511–520.
Paper Number: SPWLA-2015-v56n5a6
Published: 01 October 2015
... porosity saturation log analysis Thickness eld fraction petrophysics october 2015 consistent evaluation approach thin-bedded sand NTG core photo well logging interpretation reservoir resistivity october 2015 shale rock type Gulf October 2015 PETROPHYSICS 511 PETROPHYSICS, VOL. 56...
Paulo Netto, Antonio Mainieri Vieira da Cunha, Augusta Gonçalves Meira, Gustavo Henrique Schmitt, Jean Seydoux, Augusto Carvalho da Silva, Stephanie Chow, Ana Beatriz Felício Guedes, Emmanuel Legendre, Ettore Mirto, Chris Morriss, Rajeev Samaroo, Diogo Salim, Charles Silva
Petrophysics 54 (02): 104–112.
Paper Number: SPWLA-2013-v54n2-A3
Published: 01 April 2013
... and also detecting reservoir thickness up to 35 m (115 ft). Deep-reading directional EM measurements can be used to reduce the number of pilot wells that may be needed by providing a higher degree of confidence in the landing process compared to the classical pilot well and sidetrack technique. In addition...
Petrophysics 52 (02): 96–107.
Paper Number: SPWLA-2011-v52n2a2
Published: 01 April 2011
... measurements of gas saturation, especially in low-porosity formations. 27 1 2014 1 4 2011 2011. Society of Petrophysics and Well Log Analysts Upstream Oil & Gas cement open hole thick cement cased wellbore evaluation log analysis april 2011 sensitivity Formation Density...
Petrophysics 51 (06).
Paper Number: SPWLA-2010-v51n6a3
Published: 01 December 2010
... with sub-micron pores were synthesized as planar films of thickness 5 μ m. These pore networks were conditioned in brine, submerged wet into crude oil for aging in the absence of applied pressure, then cleaned. Brines covering a wide range of NaCl concentrations, without or with added CaCl2 and/or brine...
Jorge A. Sanchez-Ramirez, Carlos Torres-Verdín, David Wolf, Gong Li Wang, Alberto Mendoza, Zhipeng Liu, Gabriela Schell
Petrophysics 51 (04).
Paper Number: SPWLA-2010-v51n4a1
Published: 01 August 2010
... for reliable and accurate inversion results is the detection/selection of bed boundaries. Inversion of field data also indicates that the minimum bed thickness resolvable with combined inversion is approximately 0.7ft (0.21m), and that inflection points of density logs are the best option for bed-boundary...
Petrophysics 46 (01).
Paper Number: SPWLA-2005-v46n1a1
Published: 01 February 2005
... fluid selection and formulation drilling fluids and materials Thickness filtrate invasion flow in porous media Upstream Oil & Gas mudcake reference permeability drilling fluid chemistry drilling fluid property Fluid Dynamics Simulation petrophysical parameter mudcake porosity...
Petrophysics 42 (03).
Paper Number: SPWLA-2001-v42n3a4
Published: 01 May 2001
... Thickness sequence drilling fluid chemistry drilling fluids and materials mudcake parameter slowness-time plot Artificial Intelligence Upstream Oil & Gas particle size shear strength slowness mudcake water-base mud hysteresis erosion drilling fluid selection and formulation drilling...
Petrophysics 42 (01).
Paper Number: SPWLA-2001-v42n1a2
Published: 01 January 2001
... for a large-size C/O tool in a high-porosity formation, using a general-purpose Monte Carlo computer code for radiation transport. The computer model is structured in a 35 p.u. sandstone formation which is segregated into 8 concentric zones all with radial thickness of 7.5 cm. A 3%-in (8.9 cm) outer diameter...
Petrophysics 41 (04).
Paper Number: SPWLA-2000-v41n4a1
Published: 01 July 2000
... estimate of true formation resistivity. Sensitivities in STOOIP were assessed with multiple R, earth models which can later be tested against production results. In addition, water saturation height functions, developed in vertical wells and thick beds, can be validated in deviated wells with thin beds...
Petrophysics 41 (03).
Paper Number: SPWLA-2000-v41n3a2
Published: 01 May 2000
... shoulder beds, one tends to believe that the greater the dip angle is, the lower the reading of the apparent resistivity at the center of the bed will be. However, such a behavior is not always true. The resistivity reading also depends on the bed thickness and on the resistivity contrast between...
Petrophysics 40 (01).
Paper Number: SPWLA-1999-v40n1a1
Published: 01 January 1999
... instrument response functions. The relationship between minimum bed thickness and Walsh functions is established. Two definitions and three theorems are introduced to support the relationship. TBIR is defined and explained using two examples, and is then applied to enhance the vertical resolution of a sonic...
Petrophysics 39 (06).
Paper Number: SPWLA-1998-v39n6a3
Published: 01 November 1998
.... These models simulate well logging situations in stratified beds of varying thicknesses with or without fluid invasion. The sensitivity of the system to measure relative fields (secondary/primary) is of the order of 0.01%. The following conclusions were made: In thin conducting beds placed in a relatively...
Petrophysics 39 (05).
Paper Number: SPWLA-1998-v39n5a1
Published: 01 September 1998
... Laterolog well logging log analyst vertical resolution Laterolog dual laterolog Upstream Oil & Gas laterolog tool lld resistivity main electrode resistivity curve equation Artificial Intelligence Thickness borehole radius 0 ALD Anderson laterolog method apparent resistivity electrode...
Petrophysics 39 (02).
Paper Number: SPWLA-1998-v39n2a2
Published: 01 March 1998
... domain, irrespective of the Az used. The thrust of this article is to develop a Markov chain model of subsurface stratigraphy that explicitly considers layer thickness statistics, recognizes the continuous nature of the underlying deposition process, and does not suffer from the problems associated...
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