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JOURNAL OF EARTH ENERGY ENGINEERING

JEEE
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Published by Universitas Islam Riau

ISSN : - EISSN : 25409352 DOI : -

Core Subject : Science, Engineering,

Earth & Planetary Sciences Energy Engineering Materials Science & Nanotechnology

Journal of Earth Energy Engineering (eISSN 2540-9352) is a Bi-annual, open access, multi-disciplinary journal in earth science, energy, and engineering research issued by Department of Petroleum Engineering, Universitas Islam Riau. The journal is peer reviewed by experts in the scientific and engineering areas and also index in Directory of Research Journals Indexing (DRJI) and CrossRef Member.

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Articles 5 Documents

Search results for , issue "Vol. 8 No. 1 (2019): APRIL" : 5 Documents clear

Curie point Depth and Heat Flow Analyses over Part of Bida Basin, North Central Nigeria using Aeromagnetic Data Taiwo Adewumi; Kazeem Adeyinka Salako; Sunday Obadare Adediran; Oke Israel Okwokwo; Yusuf A Sanusi
Journal of Earth Energy Engineering Vol. 8 No. 1 (2019): APRIL
Publisher : Universitas Islam Riau (UIR) Press

This study attempt to estimate the Curie point depth and heat flow using high resolution aeromagnetic data over part of Bida basin bounded with longitude 5o00’E – 6o30’E and Latitude 8o30’N – 9o30’N with an estimated total area of 18,150 km2. We subjected the total magnetic intensity field of the study area to regional/residual separation using polynomial fitting. We divided the residual map into sixteen overlapping spectral blocks. We obtained centroid depths and depth to top of basement got from the plot of log of power spectrum against wave number; the centroid depth ranges from 6.61 km to 20.30 km while the depth to top of basement ranges from 1.59 km to 6.38 km. input parameter to calculate the curie depth. The CPD range from 10.88 km to 35.51 km with an average value of 23.22km. The CPD is deeper at the centre of the southern and eastern part of the study area which correspond to part of Pategi and part of Baro; and shallow at the northeastern and Northwestern part of the study area correspond to part of Mokwa and part of Bida. The geothermal gradients for the sixteen blocks range from 16.33 oCkm-1 at the centre of the southern region of the area to 53.30 oCkm-1 at the northeastern and north western region of the study area with an average of 28.98 oCkm-1. While the heat flow to range from 40.99 mWm-1 to 133.80 mWm-1 with an average value of 76.19 mWm-2. It can be deduced from this study that the Southeastern, southwestern, and the northwestern part of the study area might be a good indicator of geothermal energy potential with minimum CPD, maximum geothermal gradient and heat flow since demagnetized rocks confirm a hot rock quantity in the crust that can be harnessed for geothermal energy exploitation.

A New EOR Technology: Gas Alternating Gas Injection Mohammed Alsharif Samba; Ibrahim Aldokali; Mahmoud Omran Elsharaf
Journal of Earth Energy Engineering Vol. 8 No. 1 (2019): APRIL
Publisher : Universitas Islam Riau (UIR) Press

A new method of enhanced oil recovery has been developed and applied to a simulation using some of data from the fifth SPE paper " template from CMG ". The simulator was used in this paper is GEM in the Computer Modelling Group (CMG) advanced equation-of-state (EOS) compositional simulator. The new method is called Gas alternating gas injection(GAG). The Gas Alternating Gas process is a cyclic method of injecting alternating cycles of gas followed by gas and repeating. Sensitivity analysis showed this method can give a much better recovery factor for GAG compared with single continues gas injection. GAG benefits that will give low water cut and high oil recovery due to gas segregation between two gases and that will prevent heavier gas to go the top layers. This work indicate that the GAG injection is an economic method compared with continues injection. Especially when we use GAG (Air + CO2).

Modeling Of Oil Flows In Langgak Field Pipeline Revi Fernandiaz; Idral Amri; Panca Setia Utama
Journal of Earth Energy Engineering Vol. 8 No. 1 (2019): APRIL
Publisher : Universitas Islam Riau (UIR) Press

Abstract Congeal in the pipeline is one of the biggest problems faced by PT.SPR Langgak in piping crude oil from production wells to oil processing unit caused by decreasing oil temperature. The purpose of this study is to study the effect of environmental temperature on fluid temperature in the pipeline, study the effect of wind speed on fluid temperature in the pipeline and to determine the location of the occurrence of congeal in PT.SPR Langgak pipeline. Determining the location of the occurrence of congeal using the model T with analytical methods in the Matlab software is by entering parameters of pipe temperature, viscosity, density, fluid velocity, wind speed and environmental temperature. The congeal location was determined by model T obtained in the Zone C pipeline distance 44.9-449m with the average error model T is 1.88%. This model T can be applied provided the paraffin content is 15-60% and the pipe characteristics (pipe thickness, pipe diameter and pipe material) are the same.

Bioethanol Production from Tea Waste as a Basic Ingredient in Renewable Energy Sources Muhammad Khairul Afdhol; Hafni Zulaika Lubis; Chalidah Pratiwi Siregar
Journal of Earth Energy Engineering Vol. 8 No. 1 (2019): APRIL
Publisher : Universitas Islam Riau (UIR) Press

Global demand for energy needs has increased due to the rapid development of the human population, raising the industrial prosperity in developing countries. Primary energy demand is still supplied from fossil fuels, such as oil, coal and natural gas. The utilization of fossil fuels will continuously enhance the effect of greenhouse gases in the atmosphere. On the other hand, the extent of the tea plantation area in Indonesia reached 53,009 Ha, so that it will reproduce a waste too. Thus, spent tea as bioetanol. In addition it contains cellulose fibres are quite high, environmentally friendly and economical. Bioethanol as motor vehicle fuels can reduce the addition of CO2 at atmosphere because the use of biomass for the production and usage of bioethanol can be considered as a closed cycle. According to this principle the buyer of CO2 from fuel combustion bioethanol originating from the CO2-based biomass will be reabsorbed by plants through photosynthesis reactions. As a result of this whole process is not accounted for emissions of CO2 liquid gas a greenhouse gas into the atmosphere. Bioethanol-cellulosa can reduce greenhouse gas emissions amounted to 80%. The process into products bioethanol via hydrolysis, fermentation, distillation and characterization using Gas Chromatography-Mass Spectrometry (GC-MS). Them is the optimal bioethanol levels produced from fermented inoculant 1% amounting to 8.2% and optimal levels of bioethanol produced from hydrolysis of 8% H2SO4 results amounted to 8.2%, thus optimumsitas the ethanol produced from 8% acid and 1% inoculant apply to have levels of ethanol amounted to 8.2%. The product program could be developed into bioethanol solvent to dissolve the oil that is waxy crude oil.

Effects of Various Steam Flooding Injection Patterns and Steam Quality to Recovery Factor Indri Kusumastuti; Tomi Erfando; Fiki Hidayat
Journal of Earth Energy Engineering Vol. 8 No. 1 (2019): APRIL
Publisher : Universitas Islam Riau (UIR) Press

The main principle of steam flooding is to reduce the oil viscosity using hot steam that is injected into the reservoir. In the field implementation there are several injection patterns that can be applied for steam flooding. This research aims to determine the effect of several injection patterns and steam quality on oil recovery factor. Therefore, it can be known the injection pattern and steam quality are right to obtain the best recovery factor. Analysis was carried out on injection patterns including five-spots, inverted five-spots, seven-spots, inverted seven-spots, nine-spots, and inverted nine-spots. The variations in the steam quality used are 50%, 70% and 90%. The simulation model a 3-dimensional cartesian with grid block size 5x5x5 on CMG STARS. The parameters in this steam flooding scenario are temperature at 450° F, injection pressure of 500 psi, and injection rate of 1000 bbl /day. Of all the scenarios tested the best results were in the inverted seven spot pattern with steam quality 0.9, where recovery factor was 35,1% and total cumulative production was 269397 bbl.

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