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All Journal JURNAL TEKNIK Petro : Jurnal Ilmiah Teknik Perminyakan Journal of Earth Energy Science, Engineering, and Technology JTTT Scientific Contributions Oil and Gas
Rohmana, Rian Cahya
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Journal : journal of earth energy science engineering and technology

 1 
Optimizing of Electrical Submersible Pump with Stage Variation Using Nodal Analysis at “Rha” Well, Cepu Field for Enhancing Oil Production Aditya, Rhera; Rohmana, Rian Cahya; Budiono
Journal of Earth Energy Science, Engineering, and Technology Vol. 7 No. 2 (2024): JEESET VOL. 7 NO. 2 2024
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jeeset.v7i2.20896

Abstract

Well “Rha”, located in Cepu Field, is an old well that no longer produces oil naturally (natural flow), so an artificial lift is needed to produce oil. The artificial lift method used in this well is an electrical submersible pump. The well has a maximum flow rate of 1016.04 BFPD with a water cut of 98.2%, indicating a significantly high proportion of water in the flow. The installed pump in this well is REDA DN450/42 Hz, with an operating range of 246–383 BFPD. The evaluation showed that the head pressure exceeded the maximum operating range, causing an upthrust. This research aims to optimize the installed pump by replacing it and performing nodal analysis to obtain the stage that matches the optimum flow rate. This study applied the Wiggins IPR method to calculate the well's maximum flow rate. The study identified and troubleshot performance issues with the existing pump and applied nodal analysis to optimize production. The optimal production rate in this well is 609.62 BFPD, which operates outside the DN450 pump's recommended operating range. Therefore, optimization was carried out using a new pump in the field DN750/42 Hz with 171 stages. Subsequent nodal analysis showed that 124 stages, with a horsepower of 10.01 HP and a pump efficiency of 56.42%, aligned with the optimal production rate. With a water cut of 98.2%, the initial oil rate was 5.2 barrels of oil per day (BOPD), which increased to 10.94 BOPD after optimization. This research demonstrates that optimization by adjusting the stages of ESP can achieve optimal production rates.
Evaluating Hydrocarbon Prospects and Petrophysical Properties in Sepinggan Formation, East Kalimantan's Lower Kutai Basin Purnomo, Rezandy Purnomo Setyo; Rohmana, Rian Cahya; Atmoko, Widi
Journal of Earth Energy Science, Engineering, and Technology Vol. 6 No. 3 (2023): JEESET VOL. 6 NO. 3 2023
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jeeset.v6i3.18253

Abstract

This study aims to determine hydrocarbon zones and analyze petrophysics in the Sepinggan Formation, located in the lower Kutai Basin, which is one of the oil and gas producing formations in Indonesia. The data used includes 5 well log data and mudlog data. The results of the study show that the Sepinggan Formation has 14 potential zones dominated by carbonate sandstone lithology with a slight mixture of coal. Some key findings in the petrophysical analysis include the largest average shale volume of about 41% in zone 1 of well SPG-V8, the largest average porosity of about 24% in zones 1 and 2 of well SPG-V1, the largest average permeability of about 2591.08 mD in zone 1 of well SPG-V2, and the largest average water saturation of about 56% in zone 2 of well SPG-V7. Based on these results, further evaluation of hydrocarbon potential in the identified potential zones and optimization of exploration and exploitation techniques are needed to improve the efficiency of oil and gas production in the Sepinggan Formation.
Assessing Fracture Intensity and Petrophysical Properties in the Jatibarang Formation's Volcanic Reservoirs, North West Java Basin Baihaqie, Qosha; Rohmana, Rian Cahya; Atmoko, Widi
Journal of Earth Energy Science, Engineering, and Technology Vol. 7 No. 1 (2024): JEESET VOL. 7 NO. 1 2024
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jeeset.v7i1.18359

Abstract

Volcanic rock reservoirs, characterized by fractures in their formations, have gained attention in Indonesia due to their oil content, particularly in the Jatibarang Formation in West Java. This study focuses on four wells in the West Java Basin containing the Jatibarang Formation, aiming to determine fracture intensity using conventional log data and to perform petrophysical analysis. The research employs well log, mud log, and core data, utilizing qualitative analysis to identify potential reservoir zones and quantitative analysis to calculate fracture intensity and petrophysical properties. The results show that fractures in the Jatibarang Formation can be identified through fracture intensity analysis using conventional log data (MSFL, RHOB, Caliper, PEF, and DT). Fracture intensity calculations were only carried out on the QB-3 well because the other wells did not have complete log data. The results of the fracture intensity analysis showed that the fractures that occurred in the QB-3 well had 1-23%. Petrophysical analysis of the four wells reveals that the cutoff values for clay volume (50%), porosity (10%), and water saturation (70%) indicate potential candidates for further reservoir research. The QB-3 well has seven potential zones with a fracture index value of more than 10%. Permeability in wells QB-3 and QB-4 is more than 60 mD, making these four wells potential candidates for further research on volcanic rock reservoirs.
Co-Authors Aditya, Rhera Baihaqie, Qosha Budiono Dedy Irawan Effendi, Dahrul Fardiansyah, Iqbal Harishidayat, Dicky Hidayat, Dicky Haris Maulana, M.Raja Muhamad Bisyir, Aliyah Nursidik, Unggul Setiadi Purnomo, Rezandy Purnomo Setyo Safitri, Mairani Ananda Sastra, Mahdani Mahardika Setiyaningrum, Priskila Rully Taufani, Leon Triwanti, Delva Tutuka Ariadji Varayesi, Fidya Widi Atmoko Yasutra, Amega