Oilfield geothermal resources of the Upper Assam Petroliferous Basin, NE India

Majumdar, Dilip; Devi, Abhilekha

doi:10.1016/j.engeos.2021.07.002

Cited by 10 publications

(4 citation statements)

References 14 publications

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“…The discussed seventeen oil and gas wells, drilled in the Upper Assam Basin, recorded bottomhole temperatures ranging from 60 to 120 °C for depths varying from 3579 to 4603 m (Table 3). Subsequent works 6,40 on the subsurface geothermal maps demonstrated a consistent trend of increasing temperatures with the upliftment of the basement configuration. The higher temperatures are observed over the crests of local highs, gradually decreasing towards the flanks.…”

Section: Geothermal Regimementioning

confidence: 83%

“…Repurposing abandoned wells for geothermal energy is also cost effective as it would reduce the drilling cost and consequently the overall capital cost of the plant 5 , 10 , 14 . Retrofitting or repurposing of abandoned or high water cut-producing wells as geothermal wells are feasible due to the presence of attractive/favorable high bottom hole temperature (BHTs) at few of the depleted wells in the area 6 . Given that most oilfield reservoirs operate on water drive mechanisms, large volumes of hot water are produced without utility, posing environmental hazards.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, there has been a growing interest in geostorage and geothermal technologies to bring about a tectonic shift in the hydrocarbon industry [5][6][7][8][9][10][11][12][13][14] . These technologies offer innovative solutions for energy storage and the extraction of heat from the Earth, with the potential to transform the way we produce and consume hydrocarbon.…”

mentioning

confidence: 99%

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Integrated coupled assessment of geostorage and geothermal prospects in the oil fields of Upper Assam Basin

Dutta,

Gogoi,

Hussain

et al. 2024

Sci Rep

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This study proposes an integrated approach of assessing CO2 storage potential and geothermal energy prospect based on the data of seventeen depleted wells of Upper Assam Basin which could assist the global objective of net zero transition. The petrophysical properties of Tipam, Barail and Lakadong + Therria Formations from the seventeen wells have been utilised to perform the Monte Carlo simulation for probabilistic estimation of the CO2 storage in the Upper Assam Basin. This preliminary work showed that the mean storage capacity of 18.8 ± 0.7 MT, 19.8 ± 0.9 MT and 4.5 ± 0.8 MT could potentially be stored in the three geological formations of the basin. The corrected bottom hole temperature values for the studied seventeen wells were determined using the well log data and Waples and Harrison method; these values provided a static geothermal gradient for each well, which varies widely from 0.017 to 0.033 °C/m. In order to enable geothermal prospectivity, static formation temperature maps have been generated for the studied wells. The probabilistic assessment of stored heat-in-place and formation temperature maps delimited five prospective sites for the extraction of geothermal energy in the basin. The study also presented a risk assessment for CO2 storage development in the basin. Further, the study illustrated an economic analysis of the implementation of a CO2 storage project and geothermal operations in the basin.

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Section: Geothermal Regimementioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Integrated coupled assessment of geostorage and geothermal prospects in the oil fields of Upper Assam Basin

Dutta,

Gogoi,

Hussain

et al. 2024

Sci Rep

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“…The authors of ref. [108] revealed in India that corrected bottom-hole temperatures can be used to show area resistivity. In this study, area resistivity formed an evident layer and was utilized to map possible geothermal regions in Nigeria and the data were extracted from areas mapped with corrected BHT map datasets in the literature.…”

Section: Fundingmentioning

confidence: 99%

Development of an Improved Decision Support Tool for Geothermal Site Selection in Nigeria Based on Comprehensive Criteria

Nwaiwu,

Leach,

Liu

2023

Energies

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Geothermal resource assessment is crucial for the rural electrification of Nigeria. A comprehensive set of criteria was used to appraise promising geothermal sites in Nigeria. The evaluation of the sites was performed using the multi-criteria decision analysis (MCDA) method and taking into account evidence of a wide range of criteria from a set of geological, geophysical, well log, environmental, remote sensing, and geochemical datasets to appraise promising geothermal sites and to add to the current debate on the needed criteria for geothermal development. To gather relevant data, various sources such as bottom-hole temperature (BHT) data from different boreholes and oil and gas wells, aeromagnetic maps, reduced-to-the-pole, magnetic, heat flow, seismic, and geothermal gradient data from aerogravity maps, Bouguer anomaly maps, earthquake epicenter maps, satellite images, and geological maps were obtained from the literature. A case study of the thirty-six states of Nigeria, including the federal capital territory, Abuja (FCT), was conducted to illustrate how these criteria would reveal the technical aspect of the geothermal energy situation. A model was developed to show that the application of a wide range of criteria to the six datasets identified and analyzed in this study reveals that the datasets complement each other and should not be used independently. It can be found from the overall suitability map that more than 20% of the study area is suitable for geothermal energy development. It can also be observed from the map that some of the promising sites in Nigeria may include but are not limited to Bauchi, FCT, Taraba, Ebonyi, Adamawa, Oyo, and Nasarawa states in Nigeria. The opportunities for the further application of the approach are discussed, including the use of the model to help policymakers decide where to invest in the future.

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Identification of lithofacies from well log data in the upper Assam basin using machine learning techniques

Das,

Singha,

Mandal

et al. 2024

Acta Geophys.

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Oilfield geothermal resources of the Upper Assam Petroliferous Basin, NE India

Cited by 10 publications

References 14 publications

Integrated coupled assessment of geostorage and geothermal prospects in the oil fields of Upper Assam Basin

Integrated coupled assessment of geostorage and geothermal prospects in the oil fields of Upper Assam Basin

Development of an Improved Decision Support Tool for Geothermal Site Selection in Nigeria Based on Comprehensive Criteria

Identification of lithofacies from well log data in the upper Assam basin using machine learning techniques

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