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This study presents an estimation of Curie point depth (CPD), heat flow and geothermal gradient from spectral analysis over the Adamawa volcanic region (northern Cameroon). The spectral analysis method is applied to the reduced-toequator (RTE) magnetic anomaly data of the region. Grid Earth Magnetic Anomaly (EMAG2) data were divided into 17 zones. RTE magnetic anomaly data were low-pass filtered to remove the effects of topography. Then, the data were transformed into the Fourier domain in order to determine the spectrum of the magnetic anomaly data for the study region. Then, the depth values are used to estimate the CPD, the geothermal gradient (GG) and the heat flow in the Adamawa region of Cameroon (Central Africa). The acquired results indicate that the CPD varies between 15.97 and 41.16 km with an average of 27.52 km. GG varies between 14.09 and 36.31 °C km −1 with an average of 22.27 °C km −1 and the resulting heat flow varies between 35.23 and 90.78 mW m −2 with an average of 55.68 mW m −2 . The variation in heat flow and GG shows an abnormal geothermal condition of the area. It is found that there is a geothermal potential precisely at Woulndé in the Adamawa region. The obtained results can serve as a guide for government and private partners to explore this energy source.

The purpose of the study is to activate a well named X (for confidential reasons) in order to improve its production by proposing an electrical submersible pump. The nodal analysis is performed to understand the well’s condition and an economic evaluation is done to determine the applicability of the project. The initial completion data, the pump placement data and the economic data are considered and used as input in PIPESIM 2017 software for operations and simulations. The results obtained from nodal analysis show that the well is in a total depletion situation. Upon analysis, the electrical submersible pump type REDA S6000N with operational diameter of 5.38 inches is appropriately chosen and installed, resulting in a flowrate of 4,891.36 stock-tank barrels per day (stb/d) with a bottom pressure of 2,735 pounds per square inch (psi). A flowrate of 5,000 stock-tank barrels per day at a pressure of 2,707 psi is obtained after optimisation of the pump through sensitivity curves. The economic balance sheet presents a net present value of USD 110,718,250, showing the profitability of the project over a period of one year.

The objective of this paper is to optimize the eruptive well X-1 of field X so that it achieves an economically profitable production rate in order to be able to increase income. The completion data, pressure-volume-temperature (PVT) data and reservoir data are used to improve the production of the well X-1 by using the nodal analysis and PIPESIM software. Several optimization scenarios are considered by varying: The diameter of the tubing, the wellhead pressure, the diameter of the flow line and the water cut. The main results show that reducing the wellhead pressure from 350 to 100 psia and increasing the flowline diameter from 2.5 to 4 inches improve the production flow rate from 850 to 2030.472 bbl /d. In economic terms, this well gives the payback period after 1 year and 9 months and a net present value (NPV) of 193,546,524 $ after 8 years.

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