Estimating the Quantity of Recoverable Heat in a Geothermal Reservoir in Nigeria

Okeifufe, Nnamdi Francis; Izuwa, Nkemakolam Chinedu; Nwogu, Ngozi Claribelle

doi:10.2118/203643-ms

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…Simulation study conducted on geothermal energy in Nigeria reveals that geothermal resources hold great potentials for electrical energy generation and should be put to developmental use in Nigeria as a means to increase the total power generation and increase the portion of renewables in Nigeria energy value chain [4]. Nigeria has the potential of generating 74Megawatts of electricity from just one geothermal reservoir which could provide electricity for villages and small towns [5].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Wellbore Heat Transfer in Geothermal Production Well

Izuwa,

Okereke,

Nwanwe

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Electricity supply in Nigeria has been insufficient to aid development. It has also been observed that fossil fuels that supply energy has not been friendly to the environment, as a result an alternative energy source is needed. Geothermal energy has come to fill this gap. This work modelled wellbore heat transfer in geothermal wells and investigated the best heat mining fluid that will conserve heat during heat transfer at the wellbore during heat production. This work employed the mechanisms that greenhouse gases use to absorb heat from the sun and retain it to warm the earth. Simulation of heat extraction capability of steam and CO2 were studied. It was observed at reservoir conditions (248 °F) that steam Mass heat capacity (2.433 KJ/kg °F) is higher than that of CO2 (1.088 KJ/kg °F). At 204. 8 °F mass heat capacity of CO2 is 1.1915KJ/kg OF and that of steam is 2.4058 KJ/kg °F. This implies that steam retains more heat than CO2. From the study at wellbore fluid temperature of 276.8 °F, and at a flow rate of 1300 lb/hr, the wellbore heat transfer from steam (0.158 mmbtu/day) is slightly higher than that of CO2 (0.105 mmbtu/day). CO2 conserves more heat than steam when used as a heat transfer fluid. The heat transfer capabilities of the mining fluids determine the production capability of the heat resources and the quantity of electricity generation. The study recommended CO2 deployment as heat mining fluid in the exploitation of heat in geothermal resources in Nigeria. This will reduce the greenhouse effect of CO2 in our environment while also encouraging rapid development and economic growth, more especially with the rising cost of energy from fossil. Availability of geothermal energy will increase the supply of electricity in Nigeria.

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Section: Introductionmentioning

confidence: 99%

Modeling of Wellbore Heat Transfer in Geothermal Production Well

Izuwa,

Okereke,

Nwanwe

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…The geological structure of a region affects the overall dispersion of ground heat in the lithosphere and the extent of geothermal exploration in Nigeria (Okeifufe et al ., 2020). Nigeria is situated between latitude 9 0 N and longitude 8 0 E. Proterozoic to Lower Palaeozoic metamorphic and igneous rocks, the tertiary to recent volcanic rocks make up the Basement Complex.…”

Section: Introductionmentioning

confidence: 99%

Prospective geothermal well and heat catchment locations in Nigeria: Remote sensing interpretations and field validation

Akpan,

Emetere,

Afolalu

et al. 2023

Energy Exploration & Exploitation

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Geothermal energy is a renewable energy that is environmentally friendly and will help reduce greenhouse emission resulting from the burning of fossil fuels. Nigeria has numerous geothermal surface manifestations like hot and warm springs in most parts of the country that has not been exploited or explored due to the initial high cost of exploration. Most research conducted on geothermal energy prospects in Nigeria considered specific geographical sections. Due to the geological features of Nigeria, the direct and indirect tectonic activities, there is the need to map the thermal anomalies over Nigeria to determine likely geothermal wells and ground heat catchment in Nigeria. Forty years remote sensing dataset (1980–2019), was obtained from the MERRA-2 for three hundred and two (302) locations across Nigeria. The acquired thermal parameters were processed using known models. The data was also analyzed statistically and spatially using the Statistical Package for Social Sciences (SPSS) and Quantum Geographic Information System (QGIS). The results of show that the Gummel-Kumaganum areas of chad basin, Owode-igbo ora areas of the Dahomey basin, Belli area of the basement complex in Taraba state, potiskum areas of the Upper benue Basin, Ekpoma-kwale, itu areas of the Niger delta basin are middle geothermal wells with the terrestial radiation of < −702 W/m2 while the terrestial radiation >200 W/m2 in the Gummi area of the sokoto basin, Hunkuyi area of the basement complex in the northeast, Gashua area of the chad basin, Ozubulu-idah area of Anambra basin, Atijere area of the Dahomey basin, Agbasa, Omoko, Akamkpa area of Niger delta basin, Shaki area of the southwest basement complex are heat catchment regions. Other heat catchment areas had been identified for standalone energy generation. Also, the thermal anomalies in those areas were significant. The validation of the result was achieved via benchmarking similar geothermal well around the globe and ground truthing at Ijebu-Ode Nigeria. Based on the thermal reversal depth (TRD) concept, Ijebu-Ode may have a deep geothermal well with temperatures pattern similar to geothermal wells in other parts of the globe. It is recommended that ground measurement should be carried out in the basement complex to cater for geothermal systems whose mechanism is based on conduction.

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Investigation of potential geothermal well locations in Nigeria using remote sensing and field measurement

Emetere,

Akpan

2023

International Journal of Sustainable Energy

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Estimating the Quantity of Recoverable Heat in a Geothermal Reservoir in Nigeria

Cited by 3 publications

References 12 publications

Modeling of Wellbore Heat Transfer in Geothermal Production Well

Modeling of Wellbore Heat Transfer in Geothermal Production Well

Prospective geothermal well and heat catchment locations in Nigeria: Remote sensing interpretations and field validation

Investigation of potential geothermal well locations in Nigeria using remote sensing and field measurement

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