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All Journal JOURNAL OF EARTH ENERGY ENGINEERING Journal of Earth Energy Science, Engineering, and Technology
Fidya Varayesi
Tanri Abeng University
Earth & Planetary Sciences Energy Engineering Materials Science & Nanotechnology

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Price Risk For Coal Liquefaction in Moderate Scale Development Fidya Varayesi; Fans Namara Nazar
Journal of Earth Energy Engineering Vol. 8 No. 2 (2019): OCTOBER
Publisher : Universitas Islam Riau (UIR) Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (216.658 KB) | DOI: 10.25299/jeee.2019.vol8(2).3397

Abstract

According to Talla et al,2017 the Linde Hampson Method can be used to process solid changes into liquid. In this study aims to calculate the Linde Hampson method in the temperature range of the Fischer Tropsch method (LTFT /Low temperature fischer tropsch). The temperatures used for comparison include low temperatures of 200 to 250 oC. Parameters compared from the four type of coal namely lignite, antrachitre, bituminous and subbituminous are tested with projects on a moderate scale of 100 – 1000 tons. Analysis of Price risk is carried out to see the trend of change (increase/decrease) in the price of selling syngas. Price can change because of supply and demand. The main factor that can change price is quantity and quality of heat (HHV) and composition. Development of subbituminous can have higher risk than the antrachite type. Based on the calculation of the standard deviation of the risk values obtained from the four types is 25,3$.
The Effect of the Drainage Area on Well and Reservoir Performance Fidya Varayesi; Rian Cahya Rohmana; Rizqiana Mudhoffar; Ilham Nur E.N. Iskandar
Journal of Earth Energy Science, Engineering, and Technology Vol. 4 No. 3 (2021): JEESET VOL. 4 NO. 3 2021
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7833.246 KB) | DOI: 10.25105/jeeset.v4i3.8596

Abstract

Evaluation of the drainage area of a well is an effort to obtain success in planning field development. The size of the drain area not only affects the production rate but will also affect the distribution of pressure and saturation as well as the physical properties of the fluid and reservoir rock. Determination of optimum well spacing is important in field development management. This paper presents observations on the effect of the drain area on the production rate, pressure drop, and recovery factor. Simulation of the well model with a cylindrical drain area is used for various sizes of drainage areas. Based on the analysis in this study, it is concluded that the size of the discharge area affects the production rate, recovery factor, and pressure drop. The decrease in pressure affects the release of dissolved gas as indicated by changes in the gas-oil ratio (GOR) curve and the peak of the GOR.
Co-Authors Fans Namara Nazar Ilham Nur E.N. Iskandar Rian Cahya Rohmana Rizqiana Mudhoffar