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  • Science Publishing Corporation  (2)
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  • Science Publishing Corporation  (2)
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  • 1
    Online Resource
    Online Resource
    Science Publishing Corporation ; 2020
    In:  International Journal of Advanced Geosciences Vol. 8, No. 1 ( 2020-02-18), p. 5-
    In: International Journal of Advanced Geosciences, Science Publishing Corporation, Vol. 8, No. 1 ( 2020-02-18), p. 5-
    Abstract: Fracture pressure gradient is one of the essential parameters used in determining mud weight profiles during drilling operations. We have determined fracture pressure gradients from well logs obtained from three producing wells in Onshore Niger Delta using an empirical model. Key logs needed for the prediction were conditioned and quality controlled to meet the standard required for reliable results. The true vertical stress, normal compaction trend and compressional shale velocity trends were generated from the logs (density and sonic logs). Poison’s ratio was obtained from compressional and shear wave velocities derived from sonic log. Pore pressures in the three wells were then predicted using Eaton’s Method. The predicted pore pressures, overburden pressures and poison’s ratio were used to determine fracture pressures using Ben Eaton’s Model. Results showed that there is a suitable drilling margin at all depths only in well G-005. Drilling well A-001 to a depth of 10962.81 ft and K-001 to a depth of 12626.9 ft will fracture the formations because the fluid pressures at those depths approximate the fracture pressures of 8536.7psi and 9506 psi with corresponding gradients of 0.78 psi/ft and 0.75 psi/ft respectively. The implication is that drilling deeper in the field will results in very low seal capacity magnitudes, thereby presenting a higher risk of top-seal failure.  
    Type of Medium: Online Resource
    ISSN: 2311-7044
    URL: Issue
    Language: Unknown
    Publisher: Science Publishing Corporation
    Publication Date: 2020
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Online Resource
    Online Resource
    Science Publishing Corporation ; 2020
    In:  International Journal of Engineering & Technology Vol. 9, No. 3 ( 2020-07-12), p. 602-
    In: International Journal of Engineering & Technology, Science Publishing Corporation, Vol. 9, No. 3 ( 2020-07-12), p. 602-
    Abstract: This article deals with the calculation of the performance parameters of a box-type solar cooker in a sub-Saharan country in the rainy season where the solar activity is considerably attenuated because of the numerous cloudy periods. The various tests were carried out at the Labora-tory of Fundamental and Applied Physical Sciences of the École Normale Supérieure (ENS) in Abidjan. During these cooking tests, the illuminance was measured. The temperatures of the ambient air and of various places of the solar cooker were also recorded. Illumination measurements made with an EPPLEY type pyranometer made it possible to determine the average illuminance which oscillates between 636.98 w / m² and 517.91w / m² depending on the day. The average energy efficiency of the cooker has been calculated for the cooking of several foods. It varies between 20.48 ٪ to 26.59%. The overall loss coefficient is between 5.63 and 5.82. The results obtained for these tests are satisfactory and very encouraging, especially since they were carried out in the rainy season.   
    Type of Medium: Online Resource
    ISSN: 2227-524X
    URL: Issue
    Language: Unknown
    Publisher: Science Publishing Corporation
    Publication Date: 2020
    detail.hit.zdb_id: 2661563-0
    Library Location Call Number Volume/Issue/Year Availability
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