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FUTOSpace is the Federal University of Technology, Owerri open-access repository that collects, preserves and make available in digital format the intellectual output of the university's community:
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- This Community features the proceedings of conferences, seminars and workshops hosted by the FUTO or other bodies but had staff from FUTO attending and making presentations
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- Published Research Outputs
- Theses and dissertations by students and staff from all the Schools in FUTO
Recent Submissions
Pasture Management and Utilization
(Federal University of Technology, Owerri, 2016) School of Agriculture and Agricultural Technology, Department of Crop Science and Technology.
Climate change adaptation needs/priorities of rural woman farmers in flood plain areas of Owerri agricultural zone of Imo State, Nigeria
(Jomard Publishing, 2017) Chikaire, J. U.; Anaeto, F. C.; Ajaero, J. O.; Godson-Ibeji, C. C.
Adaptation is key to surviving the menace of climate change. This paper investigates adaptation needs/priorities of rural women farmers in Imo State, Nigeria. The specific objectives were to ascertain rural women farmers awareness of climate change, identify perceived effects of climate change on rural women farmers, examine adaptation needs of these women and determine adaptation strategies used by rural women. Data were collected with structured questionnaire from 180 rural women farmers randomly selected from a list of 1800 registered women farmers with the Owerri ADP office. Results showed that the rural women were very much aware of climate change as indicated by high mean responses to certain signs such as increase in temperature. (M = 2.31), unpredictable heavy rainfall (M = 2.51), unpredictable heavy winds (M = 2.45) among others. Climate change affects rural women by increasing their work load, reducing their food portions, loss of farm assets, increase rate of diseases/illness. In adapting to climate change, the rural women farmers need as a matter of urgency to find alternative livelihood options (M = 2.68), safer areas to relocate (M = 3.31), access to credits/market (M = 3.34) among others. To adapt, they employ strategies such as crop rotation, planting early maturing crops, engage in off-farm activities, cooperative farming.
Performance evaluation of a biomaterial in an aqueous based drilling mud at high pressure high temperature
(Canadian Research & Development Center of Sciences and Cultures, 2019) Duru, U. I.; Onyejekwe, I. M.; Uwaezuoke, N.; Isu, D. O.
Oil reserves are found in deep formations where the conditions of temperature and pressure are always high. These conditions have direct effects on the rheological properties of drilling fluid as they vary with increasing temperatures and pressures. Two sets of experiment were carried out on weighted and unweighted mud samples at a temperature of 250o F and 500psi pressure. The presence of locally sourced additives helped the mud to remain pseudoplastic at these conditions and also retained essential properties of the mud need for drilling operations. The plastic viscosities of the weighted and unweighted mud were 36cP and 27cP respectively. The yield stresses were 149lb/1002 ft and 110lb/1002 ft for the weighted and unweighted samples while the fluid loss volumes were approximately equal. The thickness of the cake for the weighted sample is 3.7mm and 4mm for the unweighted sample. The weighted sample with a reasonably higher PV has a better hole cleaning ability than the unweighted sample. Mucunna Solannie performed excellently to retain the essential properties of these formulations at 250o F and is therefore recommended as a HPHT drilling mud additive.
Field Experimentation
(Federal University of Technology, Owerri, 2016) School of Agriculture and Agricultural Technology, Department of Crop Science and Technology.
Reduction in annular pressure loss by mud rheology control-a means of mud pump pressure optimization: A case study of a Niger Delta Well
(International Knowledge Press, 2016-02-18) Onugha, Ifeyinwa N.; Igwilo, Kevin C.; Duru, Ugochukwu I.
This paper proposes two linear mathematical models for the reduction of annular pressure loss in a Niger Delta well- X, so that mud pump pressure is optimized. Data related to mud rheology, mud pump pressure, drill cuttings and the well geometry is available for well X which has already been drilled. The first linear model involves the reduction in pressure drop in the drill collar-casing annulus and the second linear model involves the reduction in pressure drop in the drill pipe-casing annulus. These models express reduced or critical annular pressure drops in terms of two mud rheological parameters- the yield point and plastic viscosity. For combined annular drill collar and drill pipe pressure loss, this paper proposes that the two linear mathematical models can be solved simultaneously to obtain optimum yield point and plastic viscosity of the drilling mud system to be employed for hole cleaning in the combined drill collar-casing and drill pipe-casing annulus. The HerschelBulkley model is employed as the rheological model that represents the properties of the drilling mud system
analyzed and is generated for eight rheological cases each of the drill collar and drill pipe annular hole cleaning as well as two cases of the combined drill collar and drill pipe annular hole cleaning.