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Salazar Barrero Giovanni - One of the best experts on this subject based on the ideXlab platform.
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Construcción del modelo de saturación de agua de un yacimiento de crudo pesado en la formación mirador con agua de formación dulce
2016Co-Authors: Salazar Barrero GiovanniAbstract:Resumen: Un yacimiento de crudo extra pesado de la formación Mirador el cual contiene agua connata de baja salinidad genera retos en la interpretación petrofísica para la cuantificación de la saturación de agua (Sw) por métodos convencionales. Uno de los parámetros fundamentales para el cálculo de Sw en ambientes de bajo contraste conductivo es la resistividad del agua de formación (Rw) que al ser una variable desconocida en el campo debido a la no existencia de muestras de agua de formación de fondo, presenta alta incertidumbre en la determinación del volumen de hidrocarburos, viéndose la necesidad de construir un modelo de saturación de agua a partir de la integración de fuentes de medición que sean independientes del conocimiento de este parámetro. El trabajo propone calcular un valor de Rw para cada unidad estratigráfica construyendo un modelo de saturación de agua con el uso de registros eléctricos básicos, donde se generan y validan los parámetros de arcillosidad, porosidad efectiva y propiedades eléctricas de la roca a partir de la integración de mediciones de Sw en registros eléctricos especiales dieléctricos y análisis de laboratorio de núcleos existentes en el campo. La característica de baja o nula movilidad de los yacimientos de crudo extrapesado permiten contrarrestar las limitaciones de medición de los registros eléctricos especiales por la corta profundidad de investigación de las herramientas y en la poca perdida de petróleo en el proceso de corazonamiento, dándole validez a la metodología propuesta. Se generó un mapa de iso-salinidades para cada unidad estratigráfica a partir del valor de Rw calculado en cada pozo, que junto con el modelo de Sw construido permitió la validación de la metodología propuesta aplicándola a 5 pozos perforados sin información de núcleos, pero con registros eléctricos de carbono-oxígeno y dieléctricos para su respectiva comparación. Finalmente, se realizaron mapas de saturación de agua en cada unidad estratigráfica como una de las fuentes de información para la construcción del plan de desarrollo del campo.Abstract: An extra-heavy oil reservoir of Mirador formation with low salinity connate water formation generates a challenge in the petrophysical interpretation for water saturation (Sw) calculation through conventional methods. One of the key parameters for Sw calculation in a low conductivity contrast environment is the formation water resistivity, which for being an unknown variable for the field due to the fact of not having downhole water samples, gives a high level of uncertainty in hydrocarbon volume calculation, leading the need of building a water saturation model integrating information sources that are formation water salinity independent. This document proposes calculate a value of Rw for each of the stratigraphical units building an Sw model with basic wireline logs, generating and validating volume of clay, effective porosity and electrical properties through integration of wireline dielectric logs and core laboratory Sw measurements available in the field. The low or null oil mobility characteristic allow counteract the limitation of special wireline logs due to its short depth of investigation and a low oil loss from Coring Operation. This condition makes suitable this methodology proposed. Iso-salinities maps were generated for each of the stratigraphical units based on the calculation of Rw for each well and with the combination of an Sw model build allow the validation of the methodology proposed by applying it to 5 well without cores information but with carbon-oxygen and dielectric wireline logs for the respective comparison. Finally, water saturation maps were built for each of the stratigraphical units as one of the information sources for construction of the field development pla
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Construcción del modelo de saturación de agua de un yacimiento de crudo pesado en la formación mirador con agua de formación dulce
2016Co-Authors: Salazar Barrero GiovanniAbstract:Resumen: Un yacimiento de crudo extra pesado de la formación Mirador el cual contiene agua connata de baja salinidad genera retos en la interpretación petrofísica para la cuantificación de la saturación de agua (Sw) por métodos convencionales. Uno de los parámetros fundamentales para el cálculo de Sw en ambientes de bajo contraste conductivo es la resistividad del agua de formación (Rw) que al ser una variable desconocida en el campo debido a la no existencia de muestras de agua de formación de fondo, presenta alta incertidumbre en la determinación del volumen de hidrocarburos, viéndose la necesidad de construir un modelo de saturación de agua a partir de la integración de fuentes de medición que sean independientes del conocimiento de este parámetro. El trabajo propone calcular un valor de Rw para cada unidad estratigráfica construyendo un modelo de saturación de agua con el uso de registros eléctricos básicos, donde se generan y validan los parámetros de arcillosidad, porosidad efectiva y propiedades eléctricas de la roca a partir de la integración de mediciones de Sw en registros eléctricos especiales dieléctricos y análisis de laboratorio de núcleos existentes en el campo. La característica de baja o nula movilidad de los yacimientos de crudo extrapesado permiten contrarrestar las limitaciones de medición de los registros eléctricos especiales por la corta profundidad de investigación de las herramientas y en la poca perdida de petróleo en el proceso de corazonamiento, dándole validez a la metodología propuesta. Se generó un mapa de iso-salinidades para cada unidad estratigráfica a partir del valor de Rw calculado en cada pozo, que junto con el modelo de Sw construido permitió la validación de la metodología propuesta aplicándola a 5 pozos perforados sin información de núcleos, pero con registros eléctricos de carbono-oxígeno y dieléctricos para su respectiva comparación. Finalmente, se realizaron mapas de saturación de agua en cada unidad estratigráfica como una de las fuentes de información para la construcción del plan de desarrollo del campo.Abstract: An extra-heavy oil reservoir of Mirador formation with low salinity connate water formation generates a challenge in the petrophysical interpretation for water saturation (Sw) calculation through conventional methods. One of the key parameters for Sw calculation in a low conductivity contrast environment is the formation water resistivity, which for being an unknown variable for the field due to the fact of not having downhole water samples, gives a high level of uncertainty in hydrocarbon volume calculation, leading the need of building a water saturation model integrating information sources that are formation water salinity independent. This document proposes calculate a value of Rw for each of the stratigraphical units building an Sw model with basic wireline logs, generating and validating volume of clay, effective porosity and electrical properties through integration of wireline dielectric logs and core laboratory Sw measurements available in the field. The low or null oil mobility characteristic allow counteract the limitation of special wireline logs due to its short depth of investigation and a low oil loss from Coring Operation. This condition makes suitable this methodology proposed. Iso-salinities maps were generated for each of the stratigraphical units based on the calculation of Rw for each well and with the combination of an Sw model build allow the validation of the methodology proposed by applying it to 5 well without cores information but with carbon-oxygen and dielectric wireline logs for the respective comparison. Finally, water saturation maps were built for each of the stratigraphical units as one of the information sources for construction of the field development planMaestrí
Yoshiyuki Fujii - One of the best experts on this subject based on the ideXlab platform.
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Deep ice Coring at Dome Fuji Station, Antarctica
National Institute of Polar Research, 1999Co-Authors: Yoshiyuki Fujii, Nobuhiko Azuma, Yoichi Tanaka, Akiyoshi Takahashi, Kunio Shinbori, Yoshiki Nakayama, Hideaki Motoyama, Kazuo Katagiri, Shuji Fujita, Morihiro MiyaharaAbstract:Deep ice Coring was carried out at Dome Fuji Station, Antarctica in 1995 and 1996 following a pilot borehole drilled and cased with FRP pipes in 1993,and reached 2503.52m in December 1996. Total numbers of ice Coring runs below the pilot borehole and chip collection were 1369 and 837 respectively. The mean Coring depths per run and per day were 1.75m and 8.21m respectively. We report the outline of the Coring Operation, the system, Coring method, and troubles encountered during the Coring work
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Drilling fluid for Dome F Project in Antarctica
Department of Applied Physics Faculty of Engineering Hokkaido University Institute of Low Temperature Science Hokkaido University Institute of Low Tem, 1994Co-Authors: Shuji Fujita, Nobuhiko Azuma, Tomomi Yamada, Renji Naruse, Shinji Mae, Yoshiyuki FujiiAbstract:At Dome F, one of the summits of the East Antarctic Ice Sheet, a very deep ice-Coring Operation is to be carried out by the Japanese Antarctic Research Expedition from 1995. Since it will take two years to complete the Coring up to about 3000m depth, the borehole should be filled with proper drilling fluid to prevent borehole closure during the Operation. This paper is a report on our investigations for searching for the proper drilling fluid which can be used in the very cold environment at Dome F. Although the investigations are still in progress, three kinds of fluid were chosen as drilling fluid candidates. They are : 1) n-butyl acetate, 2) "IP-solvent" with densifier and 3) Silicone Oil. Their properties were investigated and compared in terms of density and viscosity, which are essential requirements for a drilling fluid. As a result, it was shown that n-butyl acetate and IP-solvent with densifier can be used as the drilling fluid. However, the use of n-butyl acetate is impossible without sufficient ventilation at the Coring site or other action to dispose of its vapor. When the use of IP-solvent with densifier is considered, the choice of proper densifier is also a problem
Morihiro Miyahara - One of the best experts on this subject based on the ideXlab platform.
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Deep ice Coring at Dome Fuji Station, Antarctica
National Institute of Polar Research, 1999Co-Authors: Yoshiyuki Fujii, Nobuhiko Azuma, Yoichi Tanaka, Akiyoshi Takahashi, Kunio Shinbori, Yoshiki Nakayama, Hideaki Motoyama, Kazuo Katagiri, Shuji Fujita, Morihiro MiyaharaAbstract:Deep ice Coring was carried out at Dome Fuji Station, Antarctica in 1995 and 1996 following a pilot borehole drilled and cased with FRP pipes in 1993,and reached 2503.52m in December 1996. Total numbers of ice Coring runs below the pilot borehole and chip collection were 1369 and 837 respectively. The mean Coring depths per run and per day were 1.75m and 8.21m respectively. We report the outline of the Coring Operation, the system, Coring method, and troubles encountered during the Coring work
宮原 盛厚 - One of the best experts on this subject based on the ideXlab platform.
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Deep ice Coring at Dome Fuji Station, Antarctica (in Japanese)
国立極地研究所, 1999Co-Authors: 藤井 理行, 東 信彦, 田中 洋一, 高橋 昭好, 新堀 邦夫, 中山 芳樹, 本山 秀明, 片桐 一夫, 藤田 秀二, 宮原 盛厚Abstract:南極ドームふじ観測拠点において, 1993年パイロット孔の掘削とケーシングが行われたのに引き続き, 1995年から2カ年にわたり本格的な深層コア掘削が進められ, 1996年12月に2503.52m深に達した。本掘削におけるコア掘削の総回数は1369回, チップ回収作業は837回に及んだ。1回の平均コア掘削長は1.75m, 一日の平均コア掘削長は8.21mであった。本報告では, 現地で使用された掘削システムの概要とともに, 掘削の経過, および掘削の方法を述べるとともに, 掘削中に生じたさまざまなトラブルについても取られたその対策とともに報告し, 併せて今後の課題を示した。 : Deep ice Coring was carried out at Dome Fuji Station, Antarctica in 1995 and 1996 following a pilot borehole drilled and cased with FRP pipes in 1993,and reached 2503.52m in December 1996. Total numbers of ice Coring runs below the pilot borehole and chip collection were 1369 and 837 respectively. The mean Coring depths per run and per day were 1.75m and 8.21m respectively. We report the outline of the Coring Operation, the system, Coring method, and troubles encountered during the Coring work
Edward H Adelson - One of the best experts on this subject based on the ideXlab platform.
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noise removal via bayesian wavelet Coring
International Conference on Image Processing, 1996Co-Authors: Eero P Simoncelli, Edward H AdelsonAbstract:The classical solution to the noise removal problem is the Wiener filter, which utilizes the second-order statistics of the Fourier decomposition. Subband decompositions of natural images have significantly non-Gaussian higher-order point statistics; these statistics capture image properties that elude Fourier-based techniques. We develop a Bayesian estimator that is a natural extension of the Wiener solution, and that exploits these higher-order statistics. The resulting nonlinear estimator performs a "Coring" Operation. We provide a simple model for the subband statistics, and use it to develop a semi-blind noise removal algorithm based on a steerable wavelet pyramid.
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Noise removal via Bayesian wavelet Coring
1996Co-Authors: Eero P Simoncelli, Edward H AdelsonAbstract:The classical solution to the noise removal problem is the Wiener filter, which utilizes the second-order statistics of the Fourier decomposition. Subband decompositions of natural images have significantly non-Gaussian higher-order point statistics; these statistics capture image properties that elude Fourier-based techniques. We develop a Bayesian estimator that is a natural extension of the Wiener solution, and that exploits these higher-order statistics. The resulting nonlinear estimator performs a “Coring ” Operation. We provide a simple model for the subband statistics, and use it to develop a semi-blind noise-removal algorithm based on a steerable wavelet pyramid. A common technique for noise reduction is known as “Coring”. An image signal is split into two or mor