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Kristofol Waas
Jurusan Teknik Mesin, Politeknik Negeri Ambon
Industrial & Manufacturing Engineering Mechanical Engineering

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REDESIGN SUMUR SUCKER ROD PUMP MENGGUNAKAN METODE ELECTRICAL SUBMERSIBLE PUMP SEBAGAI ARTIFICIAL LIFT PADA LAPANGAN Y Nursitna F. R. Mahmud; Kristofol Waas; Leslie. S. Loppies
Journal Mechanical Engineering Vol. 1 No. 1 (2023): APRIL 2023
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i1.1625

Abstract

Natural resources found in the pores of rocks and beneath the earth's surface include oil and gas. In the oil and gas industry, when initial conditions are stable, the pressure within the reservoir can naturally push the fluid to surface. Once a well is drilled through the reservoir and put into production, there is a pressure drop around the borehole, prompting the use of artificial lift methods. Artificial lift is used to assist process of lifting fluid from the bottom of the well to surface. Well X was no longer able to produce naturally and had an SRP. There is a decline in production during production process. Gross up program can be conducted to prevent the decline in production capacity and oil production rate from the well. Gross up is a program to increase the gross production rate by converting SRP to ESP. The objective is to calculate the evaluation of the artificial lift installed in the form of an ESP. The calculations performed include oil reserves, well X performance, using pipesim software with tubing ID, operating frequency, and stage parameters. The conclusion of this research is that the installed artificial lift, namely the ESP pump, is optimal based on pump performance. Keywords: Artificial lift Method; ID Tubing; Stages; Operating Frequency
Evaluasi Performa Produksi Dan Electrical Submersible Pump (Esp) Terpasang Pada Sumur X Di Lapangan Y Mitha Tambunan; Diyah Rosiani; Kristofol Waas
Journal Mechanical Engineering Vol. 1 No. 2 (2023): AGUSTUS
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v1i2.1992

Abstract

Well X is one of the oil wells located in field Y that has been producing using artificial lift. Well X has changed the artificial lift from SRP to ESP to optimize the well production rate due to a decrease in production. Electrical submersible pump is a multistage centrifugal pump with several impellers and diffusers at each stage. The current pump data uses 21 stages and a frequency of 45 Hz with an oil production rate of 7.1 bopd and a water cut of 99%. The well production capacity known by using IPR is 4542.436 bfpd. From the production history data, the author calculates the remaining reserves that can be produced until the q-limit with the Decline Curve Analysis (DCA) method. Next, an evaluation of the installed ESP pump is conducted using the pipesim simulator. This evaluation involves nodal analysis and sensitivity testing to assess the pump performance and optimize the flowrate production. The analysis results show the remaining reserves that can be produced are 2043 MSTB. Sensitivity tests on tubing size, stages, and frequency indicated that the pump operates optimally with a tubing size of 2.992 inches, 21 stages, and a frequency of 45 Hz, resulting in a production rate of 3503.85 STB/d at a pressure of 88.86 psi. The research result show that the ESP pump operates optimally, and the use of ESP has been proven to increase the production rate from 3133,4 STB/d to 3503,85 STB/d.  Keywords : DCA, ESP, nodal analysis, optimum production  
ANALISA KINERJA NATURAL DRAFT COOLING TOWER DI PPSDM MIGAS CEPU Tesya Putirulan; Kristofol Waas; Leslie S Loppies; Agustinus Oktovianus Lopuhaa
Journal Mechanical Engineering Vol. 2 No. 2 (2024): Agustus
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i2.2914

Abstract

Human resource development center (PPSDM) a series of production processes such as boiler, power plants, coal testing sites, water treatment, fire and safety, pumps, welding workshops, distribution sites and refinery units, one of which is the cooling tower. The cooling tower is part of the power generation system that has a function as a heat exchanger between hot water coming out of the condenser and air so that the water has a lower temperature and can be reused in the condesation proses. The reseach on natural draf cooling tower in PPSDM migas aims to find parameters that affect the performance of natural draf cooling tower such as efficiency, make up water and also the heat transfer capacity of the cooling tower unit. In this writing, researchers use direct research methods in the field to find out the phenomena that occur in the colling Tower. While the performance of the natural draft cooling tower is calculated using the calculation method. The research results show an actual of 82,61 %, the recorded cooling capacity is 2417,941 kJ/s and the make up water value is 24.03 %Keywords: Cooling tower, Range, Approach, Effectiveness, Cooling Capacity, Make-Up Water.
PERHITUNGAN BEBAN PENDINGIN PADA COLD ROOM DAN ABF-1 UNTUK PENYIMPANAN PRODUK HASIL LAUT DI PT. MINA USAHA HARAPAN Isaac Bryant Kakiay; Kristofol Waas; Roy R. Lekatompessy
Journal Mechanical Engineering Vol. 2 No. 2 (2024): Agustus
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i2.2915

Abstract

Refrigeration has become an essential part in the design of spaces that will be occupied by people or products intended to provide space temperature, humidity, other process requirements. Refrigeration was originally used to produce ice, as technology advances, refrigeration has an important role in commercial and non-commercial refrigeration. Research on efficient refrigeration has been carried out by several previous studies. Previous methods were used by calculating cooling efficiency and heat loads that affect cold storage cooling.Based on an interview with one fishery company focused on processing quality seafood products located in PPN Tantui, PT Mina Usaha Harapan, the energy consumption for the cooling system takes up almost 70%-80% of the total energy expenditure of the company. Due to several factors, including excessive heat loads provision, or inefficient cold storage design. Therefore, author wants to calculate the cold storage performance in one of the seafood processing companies based on eco-fishing located in PPN Tantui, PT Mina Usaha Harapan.Calculations and analysis have been carried out in the previous chapter, several conclusions is made: 1) The average value of evaporator capacity is 34.96 kW for Cold Room and 57.39 kW for Air Blast Freezer 2) The calculated total load value (without product load) is 11.94 kW for Cold Room and 3.56 kW for ABF. 3) The company set a time of 9 hours to freeze 3500 kg of seafood, but according to calculation results, it only takes 7 hours to freeze 3830.4 kg of products with product temperature reaching -21 ͦC.Keywords: vapor compression cold storage, refrigeration load, cold room, abf, cold storage, evaporator capacity, seafood products
EVALUASI KINERJA OPERASIONAL RIG SAAT PROSES WORK OVER DAN WELL SERVICE PADA SUMUR XT PT PERTAMINA CEPU FIELD DISTRIK 1 KAWENGAN Tommy Daud Jeferson Talahatu; Erdila Indriani; Kristofol Waas
Journal Mechanical Engineering Vol. 3 No. 1 (2025): APRIL
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v3i1.3324

Abstract

Workover and well service activities are routine activities to repair and maintain production wells, such as replacing oil pump equipment and changing well hole reservoir parameters such as drilling and cracking activities This is done to repair and maintain wells so that they can always produce according to the specified potential However, during the work, the production of each well that requires repair must be temporarily stopped until the well is repaired. The length of time a well is not producing depends on the length of the repair of the well. Therefore, drilling performance must be evaluated to avoid delays in well production in the long term. Based on the results of this study, the PDSI# 35.1/IDECO H-35-M rig has a performance level of 88% for 15 days; the performance presentation of the rig is good. In addition, from the results of the NPT using a Pareto diagram, there are several main problems that cause rig performance, namely, waiting for a bright day, waiting for equipment repair time, inspection/safety checklist, and waiting for licensing time.Keywords: Rig Operational Performance. Workover and Well service, Pareto Diagram, non-productive time
Co-Authors Agustinus Oktovianus Lopuhaa Diyah Rosiani Erdila Indriani Isaac Bryant Kakiay Leslie S Loppies Leslie S Loppies Mitha Tambunan Nursitna F. R. Mahmud Roy R. Lekatompessy Tesya Putirulan Tommy Daud Jeferson Talahatu