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Analisa Geofisika di Sekitar Air Hangat Kaliulo Jawa Tengah lia yunita
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Warm water in Kaliulo Semarang is one of the manifestations of geothermal energy in the Ungaran-Telomoyo-Merbabu-Merapi volcanic area which has the potential for geothermal utilization. The temperature of Kaliulo hot water is around 36-48 0C. This study aims to perform a geophysical analysis around the Kaliulo hot springs to prove the presence of magnetic and anomalies. The methodology used using the magnetic method is correlated with geological data which includes stratigraphic and topographic maps. The equipment used includes the Proton Precision Magnetometer Ground Positioning System, laptop and surfer 15 software and Oasis version 7.0.1 for data processing. up to 1.3 nT through IGRF and daily corrections, this proves that there are magnetic anomalies around warm water manifestations and based on the stacking map there is a continuous structure with increasing depth. The lowest magnetic anomaly values were found around the Kaliulo warm water manifestations.

Pengenalan Alat Core Flooding pada Siswa Program Studi Teknik Pemboran Minyak SMK Bina Harapan Yogyakarta Lia Yunita; HB. Sukarjo; Sari Wulandari Hafsari
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 4 (2023)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jb.v4i4.6717

Proses pembelajaran di SMK program studi Teknik pemboran diperkenalkan alat Core Flooding dalam upaya peningkatan pemahaman mengenai sifat fisik batuan reservoir yang berkaitan dengan Enhached Oil Recovery (EOR). EOR merupakan perolehan minyak tahap lanjut dengan cara menginjeksikan suatu zat yang berasal dari salah satu atau beberapa metode pengurasan yang menggunakan energi luar reservoir. Pengertian Core adalah sampel atau contoh batuan yang diambil dari bawah permukaan. Kegiatan pengambilan core dilakukan pada saat pemboran. Tujuan pengabdian adalah memberikan pelatihan kepada siwa SMK program studi Teknik Pemboran dengan memberikan gambaran mengenai mekanisme pendesakan didalam batuan reservoir pada proses injeksi fluida di Enhached Oil Recovery. Metode yang digunakan dengan melakukan pelatihan dengan alat core flooding. Evaluasi keberhasilan program dilakukan dengan mengadakan pretes dan posttes adanya alat core flooding. Sasaran pengabdian yaitu SMK Bina Harapan Prodi Teknik Pemboran Minyak dan Gas Bumi kelas XI dan XII semester ganjil tahun ajaran 2023/2024. Pemahaman siswa meningkat dari sebelum pelatihan alat core flooding yaitu 5 siswa (29,4 %) meningkat menjadi 16 siswa (94 %) dari 17 siswa setelah adanya pelatihan alat core flooding.

Pengenalan Alat Core Flooding pada Siswa Program Studi Teknik Pemboran Minyak SMK Bina Harapan Yogyakarta Lia Yunita; HB. Sukarjo; Sari Wulandari Hafsari
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 4 (2023)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jb.v4i4.6717

Proses pembelajaran di SMK program studi Teknik pemboran diperkenalkan alat Core Flooding dalam upaya peningkatan pemahaman mengenai sifat fisik batuan reservoir yang berkaitan dengan Enhached Oil Recovery (EOR). EOR merupakan perolehan minyak tahap lanjut dengan cara menginjeksikan suatu zat yang berasal dari salah satu atau beberapa metode pengurasan yang menggunakan energi luar reservoir. Pengertian Core adalah sampel atau contoh batuan yang diambil dari bawah permukaan. Kegiatan pengambilan core dilakukan pada saat pemboran. Tujuan pengabdian adalah memberikan pelatihan kepada siwa SMK program studi Teknik Pemboran dengan memberikan gambaran mengenai mekanisme pendesakan didalam batuan reservoir pada proses injeksi fluida di Enhached Oil Recovery. Metode yang digunakan dengan melakukan pelatihan dengan alat core flooding. Evaluasi keberhasilan program dilakukan dengan mengadakan pretes dan posttes adanya alat core flooding. Sasaran pengabdian yaitu SMK Bina Harapan Prodi Teknik Pemboran Minyak dan Gas Bumi kelas XI dan XII semester ganjil tahun ajaran 2023/2024. Pemahaman siswa meningkat dari sebelum pelatihan alat core flooding yaitu 5 siswa (29,4 %) meningkat menjadi 16 siswa (94 %) dari 17 siswa setelah adanya pelatihan alat core flooding.

Enhancing Renewable Energy Power Generation through the Exploration of Laser Technology Ma'arif, Syamsul; Kulla, Irwanuddin H. I.; Yunita, Lia
Jurnal Offshore: Oil, Production Facilities and Renewable Energy Vol. 7 No. 2 (2023): Jurnal Offshore: Oil, Production Facilities and Renewable Energy
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jo.v7i2.1739

This research aims to investigate the utilization of laser technology in improving the performance of power generation systems from renewable energy sources, focusing on solar, wind, hydropower, and biomass energy. A literature review and comprehensive analysis were conducted using a descriptive and synthetic data analysis method. The discussion results indicate that laser technology can significantly contribute to the utilization of renewable energy. In solar power generation systems, laser technology enhances solar radiation absorption in solar thermophotovoltaics applications and flexible solar panel designs. In wind power generation systems, laser technology is employed in long-range wind flow measurement using LiDAR, wind turbine load validation, and improving wind turbine control. In hydropower generation systems, laser technology protects and monitors water turbine blades to prevent erosion and damage. In biomass power generation systems, laser technology is employed for chemical element detection in the energy conversion process and analysis of biomass properties. In conclusion, using laser technology in power generation from renewable energy sources offers significant potential for enhancing efficiency, performance, sustainability, and environmental friendliness.

Analisis Permeabilitas Relatif dengan Alat Peraga Core Flooding Yunita, Lia
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Permeabilitas merupakan salah satu sifat fisik batuan reservoir yang memiliki arti kemampuan batuan untuk meloloskan fluida. Dalam proses peningkatan perolehan minyak tahap lanjut (Enhached Oil Recovery) pendesakan minyak peran permeabilitas relatif sangat penting, dimana proses pendesakan minyak oleh fluida pendesak akan menggantikan volume pori yang ditinggalkan oleh minyak. Tujuan penelitian ini adalah menentukan permeabilitas relatif batuan dengan alat peraga core flooding yang dirancang sederhana untuk meningkatkan pemahaman mekanisme pendesakan terhadap siswa SMK. Metode yang digunakan adalah menggunakan persamaan Darcy. Core yang dibuat merupakan batu pasir yang diambil diatas permukaan sesuai dan dicetak sesuai dengan tekanan alat core flooding yang dirancang. Hasil penentuan permebilitas relative dari alat core flooding dengan injeksi fluida pendesak air sesuai dengan prinsip Darcy dimana tekanan semakin besar maka perubahan volume semakin kecil dan waktu yang dibutuhkan semakin cepat pada studi kasus batuan core yang sama

Pemanfaatan Limbah Besi Baja dengan Plasma Cutting untuk Membuat Alat Peraga Jack Up Rig Yunita, Lia; Hb. Sukarjo`, Hb. Sukarjo; Nugroho, Andri Prasetyo
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 1 (2025)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jb.v6i1.11572

Mitra pengabdian UD Aneka Plastik yang merupakan pengelola limbah plastik dan besi baja berlokasi di Jalan Parangtritis KM 8 Tembi Bantul Yogyakarta. Mitra belum memanfaatkan dan mengelola limbah besi baja dengan baik dikarenakan kendala pengetahuan dan peralatan. Tujuan pengabdian adalah memberikan alat plasma cutting beserta petunjuk penggunaan dalam memotong limbah besi baja supaya dimanfaatkan salah satunya adalah alat peraga Jack Up Rig. Metode yang digunakan dengan memberikan sosialisasi mengenai pengelolaan limbah besi baja dan memberikan seperangkat alat plasma cutting serta pelatihan dalam memotong limbah besi baja. Dengan plasma cutting proses pemotongan besi baja disesuaikan dengan ukuran peralatan peraga. Hasil dari pengabdian ini memberikan manfaat kedepanya untuk UD. Aneka plastik dalam pengolahan limbah besi baja untuk peningkatkan kualitas dan harga jual limbah besi baja

Evaluasi Penyimpangan Lintasan Pengeboran Berarah Dan Pengaruhnya Terhadap Pembebanan Drill String pada Sumur “A-A” Lapangan "CPG Avis Akbar; Sari Wulandari Hafsari; Lia Yunita
Jurnal Offshore: Oil, Production Facilities and Renewable Energy Vol. 8 No. 1 (2024): Jurnal Offshore: Oil, Production Facilities and Renewable Energy
Publisher : Universitas Proklamasi 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jo.v8i1.2015

In drilling activities, wellbores inevitably experience deviation, commonly referred to as a crooked hole. If the deviation is significant, the loading on the drill string becomes one of the reasons why drilling does not go as planned and may even fail. The purpose of the research is to determine whether there is a deviation in the drilling path between the planned trajectory and the actual trajectory in well 'A-A' in the CPG field. By evaluating the drilling path deviation, it can be determined whether the load experienced by the drill string exceeds the predefined limits. The Minimum of Curvature method has the advantage of having minimal deviation and inclination, making it accurate with the plan. Therefore, this method is used to calculate the drilling path. Using the parameters of Measured Depth, Inclination, and Azimuth, the method will calculate the Radius Factor, Grid North, Grid East, Vertical Depth, and Vertical Section. The planned and actual data will then be compared to identify any deviation. Drill string load calculations will be performed if a deviation is found using the H. Rabia and Bill Mitchel equations to calculate Weight on Bit, Drag, Tension, Margin of Overpull, Torsion, and Buckling Load. The deviation results, such as at the Kick Off Point (KOP), show that in the plan, it is located at a depth of 1,378.02 Ft MD and 0.75 Ft Vsec, while in actual practice, it is at a depth of 1,275.65 Ft MD and -0.79 Ft Vsec. In Trajectory #1 for Surface Casing in the plan, it is at a depth of 2,067.03 Ft MD and 89.21 Ft Vsec, while in actual practice, it is at a depth of 1,963.68 Ft MD and 80.42 Ft Vsec. In Trajectory #2, the plan is at a depth of 3,724.52 Ft MD and 402.38 Ft Vsec, while in actual practice, it is at 3,695.72 Ft MD and 385.71 Ft Vsec.

Skenario Pengembangan Produksi Lapangan “NATA” dengan Software Integrated Production Modelling Yunita, Lia; Danardatu, Heru; Endro Tegar Prakoso
Jurnal Migasian Vol 9 No 1 (2025): Jurnal Migasian
Publisher : LPPM Institut Teknologi Petroleum Balongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36601/jm.v9i1.345

Integrated production modeling (IPM) is a software for modeling oil and gas production systems from reservoirs, wells and surface networks. IPM consists of GAP, PROSPER, MBAL, PVTP, REVEAL and RESPLVE. The purpose of the study is to plan the development scenario of the "NATA" field using IPM. The "NATA" field has nine wells and three productive zones, namely N-1, N-2 and N-3. The method used is modeling from the reservoir using MBAL software, followed by well modeling using Prosper Software, then in the final stage is to design the surface facilities of the "NATA" field using GAP Software. The results of running for 10 years until 2034 obtained reservoir N-1 produced by three wells obtained with reservoir pressure 1560 psig, oil production 1500 STB / day liquid production 1600 STB / day, water production 108 STB / day. In reservoir N-2, one well was produced, reservoir pressure 1300 psig, oil production 850 STB/day, liquid production 890 STB/day, water production 21 STB/day were obtained. In reservoir N-3, five wells were produced, reservoir pressure 1860 psig, oil production 100 STB/day, liquid production 200 STB/day, water production 100 STB/day were obtained. The development scenario of the "NATA" field with IPM until 2035 obtained a reservoir that is prospective to be developed, namely reservoir N-1 which still has a high production rate.

CONVERSION OF GRAPHICAL TO NUMERICAL DATA WITH WEB PLOT DIGITIZER IN OIL RESERVE DETERMINATION Lia Yunita
JITK (Jurnal Ilmu Pengetahuan dan Teknologi Komputer) Vol. 11 No. 3 (2026): JITK Issue February 2026
Publisher : LPPM Nusa Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33480/jitk.v11i3.7226

Old oil fields that are to be reactivated have production data only in graphical form, making it difficult to determine remaining reserves. Web Plot Digitizer helps convert graphical data into numerical data for determining oil reserves using the decline curve method. The use of Web Plot Digitizer reduces numerical errors, which impact decline parameters (qi, Di, b) and time efficiency in reserve determination. The purpose of this study is to apply Web Plot Digitizer to convert graphical production data into numerical data and determine oil reserves using decline curve analysis. The novelty of this research lies in the use of digitized graph data as direct input in Decline Curve Analysis (DCA) analysis for oil reserve estimation. The purpose of this research is to apply Web Plot Digitizer in converting production graph data into numerical data, as well as determining oil reserves using decline curve analysis. This research method uses exponential Decline Curve Analysis (DCA), which is applied to old oil fields, production rate data in the form of graphs is converted into numerical data using Web Plot Digitizer. The digitized numerical data is then made into a semilog graph of production rate versus time, then a trend line is taken for the decline in oil production rate and used in determining oil reserves. The analysis results obtained an initial decline rate (Di) value of 0.041 per month and oil reserves are estimated at 5 million barrels of oil (5 MBO), where oil will be exhausted in January 1985 if no workover is carried out. The results of this analysis provide a solution for old oil fields that only have historical graphs without access to numerical data, so that they can still calculate reserves using Decline Curve

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