Journal of the Japanese Association for Petroleum Technology
Online ISSN : 1881-4131
Print ISSN : 0370-9868
ISSN-L : 0370-9868
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Volume 49, Issue 2
Displaying 1-7 of 7 articles from this issue
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  • In-Situ Combustion Simulation for Enhanced Oil Recovery
    Seiichi HIRAKAWA, Masahiro MIWA
    1984 Volume 49 Issue 2 Pages 75-86
    Published: 1984
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.49.75
    JOURNAL FREE ACCESS
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    Oil recovery by in-situ combustion involves igniting the oil in the formation and driving the combustion front through the formation by means of air injection, while very complicated chemical reactions occur during in-situ combustion processes. The difficulty of modeling the in-situ combustion processes is chiefly due to the complexity of chemical reactions, effects of temperature on physical properties, the large number of the components and the change of oil and water phases.
    The main objective of this study is to develop an in-situ combustion model and to check is efficiency. A one-dimensional, three-phase in-situ combustion reservoir model simulates fluid flow, heat transfer, vaporization/condensation, and chemical reactions. The developed model has seven components: oxygen, nitrogen, combination of carbon dioxide and carbon monoxide, light hydrocarbon, heavy hydrocarbon, water, and coke.
    Some example calculations are presented. In spite of a simplification of thermal and physical mechanism, the applications show that the model can be used to interpret laboratory results and to predict insitu combustion processes when some parameters are varied.
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  • Effect of Maximum Particle Size and Particle Content on the Material for the Prevention of Lost Circulation in High Permeable Formations
    Keinosuke TANIGUCHI, Satoshi AKIBAYASHI, Shozo TANAKA
    1984 Volume 49 Issue 2 Pages 87-93
    Published: 1984
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.49.87
    JOURNAL FREE ACCESS
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    The various composition of particle size in the lost circulation material are tested in a simulated formation under laboratory conditions to evaluate their sealing performance. The well model is made of a double pipe for testing with circulated mud treated with the lost circulation material. The high permeable formation model is packed with 10.3mm beads packed hexagonally with a theoretical porosity and pore size of 39.5% and 1.55mm respectively. Screening walnut shells are used as the lost circulation materials. Several particles having maximum size of the half and full pore size of the formation model are selected and the lost circulation materials are mixed in mud at forty-five grams of the material per liter of mud. These muds to which each lost circulation material has been added, are tested under 98-834kPa pressures. The experimental results indicate that a lost circulation material containing 20% maximum size particles of full size to the formation pore size is the optimum size composition to seal the high permeable formation.
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  • [title in Japanese]
    [in Japanese]
    1984 Volume 49 Issue 2 Pages 94-106
    Published: 1984
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.49.94
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1984 Volume 49 Issue 2 Pages 107-114
    Published: 1984
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.49.107
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1984 Volume 49 Issue 2 Pages 115-123
    Published: 1984
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.49.115
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese]
    1984 Volume 49 Issue 2 Pages 124-129
    Published: 1984
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.49.124
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1984 Volume 49 Issue 2 Pages 130-134
    Published: 1984
    Released on J-STAGE: March 27, 2008
    DOIhttps://doi.org/10.3720/japt.49.130
    JOURNAL FREE ACCESS
    Download PDF (1251K)
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