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EVALUASI PENGEBORAN PADA NARROW PRESSURE WINDOW SUMUR D-1 DENGAN MENGGUNAKAN MANAGED PRESSURE DRILLING Dhio Defitra Thesly; Onnie Ridaliani; Rizki Akbar
JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI Vol. 8 No. 2 (2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/pdk.v8i2.15088

Saat operasi pemboran sering ditemukan beberapa tantangan yang harus dihadapi diantaranya melewati zona overpressure dan narrow pressure window. Dalam menghadapi tantangan tersebut dapat menggunakan metode Managed Pressure Drilling (MPD) jenis Constant Bottom Hole Pressure (CBHP). MPD jenis ini adalah teknik pengeboran yang menggunakan Surface Back Pressure (SBP) untuk mengontrol tekanan annular sumur dengan presisi sehingga membuat tekanan fluida pemboran di dasar sumur terjaga. Tekanan selalu di jaga agar tetap berada didalam pressure window yang telah ditentukan. Penelitian ini membahas mengenai rencana pengeboran sumur D-1 yang berada di Lapangan Lepas Pantai X Kalimantan Timur menggunakan metode MPD menembus formasi Y dan M. Metodologi yang digunakan adalah mengumpulkan data sekunder seperti tekanan pori dan gradien rekah, trajektori, kedalaman target, BHA, dan rheologi lumpur yang digunakan pada lapangan tersebut. Dengan data tersebut dibuat perencanaan lubang bor dimana terdapat mud weight schedule, perhitungan ECD dan ESD, dan Managed Pressure Program. Dari hasil penelitian, pada total depth trayek 8-1/2” dan 6-1/8” digunakan berat lumpur sebesar 11.4 ppg dan 12.4 ppg dengan penggunaan SBP masing masing sebesar 328 psi dan 555 psi untuk mendapatkan tekanan overbalance minimal saat keadaan statik. Dengan perencanaan pengeboran yang baik dan penggunaan metode MPD tantangan-tantangan yang ada pada sumur D-1 berhasil di tanggulangi dan proses pengeboran bisa dilakukan hingga kedalaman target. Abstract During drilling operations, there are many challenges that must be faced, including passing through the overpressure zone and narrow pressure window. In dealing with these challenges, the Constant Bottom Hole Pressure (CBHP) typeof the Managed Pressure Drilling (MPD) methodcan be used. This type of MPD is a drilling technique that uses Surface Back Pressure (SBP) to control the annular pressure of the well with precision so as to maintain the drilling fluid pressure at the bottom of the well. The pressure is always maintained inside the specified pressure window. This study discusses the plan to drill the D-1 well in the X Offshore Field in East Kalimantan using the MPD method through the Y and M formations. The methodology used is to collect secondary data such as pore pressure and fracture gradient, trajectory, target depth, BHA, and mud rheology used in the field. From this data, a drill hole design is made where there is a mud weight schedule, ECD and ESD calculations, and a Managed Pressure Program. From the results of the study, the total depth of the 8-1/2" and 6-1/8" section, 11.4 ppg and 12.4 ppg of mud were used with a SBP of 328 psi and 555 psi, respectively, to obtain a minimum overbalance pressure during static conditions. With a good well design and the use of the MPD method, the challenges that existed in the D-1 well were successfully overcome and the drilling process could be carried out to the target depth.

PENYULUHAN PEMBUATAN BIOFUEL DARI MINYAK GORENG KELAPA SAWIT BEKAS PAKAI PADA MASYARAKAT KELURAHAN CURUG, KOTAMADYA BOGOR Muhammad Taufiq Fathaddin; Diah Utami Safitri; Onnie Ridaliani; Nur Suhascaryo; Dyah Rini Ratnaningsih; Pri Agung Rakhmanto; Marmora Titi Malinda; Daddy Sutansyah; Bayu Hamza; Farhan; Kesit Bayu Kumoro Aji
Jurnal AKAL: Abdimas dan Kearifan Lokal Vol. 4 No. 2 (2023): Jurnal AKAL : Abdimas dan Kearifan Lokal
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/akal.v4i2.15805

Minyak jelantah adalah minyak goreng yang digunakan secara berulang. Minyak goreng bekas yang sudah digunakan berulang-ulang mengalami perubahan sifat, seperti terbentuknya asam lemak bebas dan bau tengik. Minyak jelantah dapat menimbulkan masalah pada kesehatan. Minyak jelantah juga menimbulkan dampak buruk terhadap lingkungan. Di sisi lain konsumsi BBM secara nasional terus meningkat dari tahun ke tahun. Sedangkan minyak bumi merupakan bahan bakar yang tak terbarukan, sehingga cadangan minyak bumi sebagai bahan bakar akan habis di masa yang akan datang. Oleh karena itu, perlu untuk melakukan penghematan penggunaan bahan bakar minyak dan gas bumi perlu dikembangkan pemakaian energi baru terbarukan. Berdasarkan permasalahan tersebut tujuan pengabdian kepada masyarakat ini adalah untuk manfaatkan minyak jelantah yang berasal dari minyak kelapa sawit untuk pembuatan biodiesel. Pemanfaatan minyak jelantah merupakan salah satu alternatif yang sangat potensial untuk dikembangkan pada warga setempat. Tujuan kegiatan ini adalah memberikan ilmu kepada masyarakat mengenai pembuatan biofuel. Kegiatan penyuluhan dilakukan oleh tim dosen dan mahasiswa Universitas Trisakti dan Universitas Pembagunan Nasional “Veteran” Yogyakarta secara daring dan luring serta dihadiri oleh 17 warga Kelurahan Curug di Kotamadya Bogor. Berdasarkan hasil pre-test dan post-test diperoleh kenaikan tingkat pemahaman sebesar 8.3%. Sehingga disimpulkan bahwa kegiatan tersebut dapat memberikan peningkatan pemahaman peserta.

EVALUASI PENGEBORAN PADA NARROW PRESSURE WINDOW SUMUR D-1 DENGAN MENGGUNAKAN MANAGED PRESSURE DRILLING Thesly, Dhio Defitra; Ridaliani, Onnie; Akbar, Rizki
JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI Volume 8, Nomor 2, Juli 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/pdk.v8i2.15088

Saat operasi pemboran sering ditemukan beberapa tantangan yang harus dihadapi diantaranya melewati zona overpressure dan narrow pressure window. Dalam menghadapi tantangan tersebut dapat menggunakan metode Managed Pressure Drilling (MPD) jenis Constant Bottom Hole Pressure (CBHP). MPD jenis ini adalah teknik pengeboran yang menggunakan Surface Back Pressure (SBP) untuk mengontrol tekanan annular sumur dengan presisi sehingga membuat tekanan fluida pemboran di dasar sumur terjaga. Tekanan selalu di jaga agar tetap berada didalam pressure window yang telah ditentukan. Penelitian ini membahas mengenai rencana pengeboran sumur D-1 yang berada di Lapangan Lepas Pantai X Kalimantan Timur menggunakan metode MPD menembus formasi Y dan M. Metodologi yang digunakan adalah mengumpulkan data sekunder seperti tekanan pori dan gradien rekah, trajektori, kedalaman target, BHA, dan rheologi lumpur yang digunakan pada lapangan tersebut. Dengan data tersebut dibuat perencanaan lubang bor dimana terdapat mud weight schedule, perhitungan ECD dan ESD, dan Managed Pressure Program. Dari hasil penelitian, pada total depth trayek 8-1/2” dan 6-1/8” digunakan berat lumpur sebesar 11.4 ppg dan 12.4 ppg dengan penggunaan SBP masing masing sebesar 328 psi dan 555 psi untuk mendapatkan tekanan overbalance minimal saat keadaan statik. Dengan perencanaan pengeboran yang baik dan penggunaan metode MPD tantangan-tantangan yang ada pada sumur D-1 berhasil di tanggulangi dan proses pengeboran bisa dilakukan hingga kedalaman target. Abstract During drilling operations, there are many challenges that must be faced, including passing through the overpressure zone and narrow pressure window. In dealing with these challenges, the Constant Bottom Hole Pressure (CBHP) typeof the Managed Pressure Drilling (MPD) methodcan be used. This type of MPD is a drilling technique that uses Surface Back Pressure (SBP) to control the annular pressure of the well with precision so as to maintain the drilling fluid pressure at the bottom of the well. The pressure is always maintained inside the specified pressure window. This study discusses the plan to drill the D-1 well in the X Offshore Field in East Kalimantan using the MPD method through the Y and M formations. The methodology used is to collect secondary data such as pore pressure and fracture gradient, trajectory, target depth, BHA, and mud rheology used in the field. From this data, a drill hole design is made where there is a mud weight schedule, ECD and ESD calculations, and a Managed Pressure Program. From the results of the study, the total depth of the 8-1/2" and 6-1/8" section, 11.4 ppg and 12.4 ppg of mud were used with a SBP of 328 psi and 555 psi, respectively, to obtain a minimum overbalance pressure during static conditions. With a good well design and the use of the MPD method, the challenges that existed in the D-1 well were successfully overcome and the drilling process could be carried out to the target depth.

PRESSURE BUILD UP ANALYSIS AND DELIVERABILITY ON WELL GAS HAN-1 MANUALLY AND USING ECRIN SOFTWARE Wirianta, Hananya; Ridaliani, Onnie; Oetomo, Hari Karyadi
Petro : Jurnal Ilmiah Teknik Perminyakan Vol. 13 No. 3 (2024): September 2024
Publisher : Jurusan Teknik Perminyakan Fakultas Teknologi Kebumian dan Energi Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/petro.v13i3.10155

Well Testing is one of the Method to determine the ability of the layer or formation to produce, Parameter that obtained by it is initial pressure reservoir (Pr), formation damage (s), reservoir boundary and the ability of the well to produce. On Well “Han-1” Field “X” is a type of gas well with carbonate rock formations. Methods that being used on this well is Pressure Build-Up and Delieverabilty Test with using Ecrin Software v.4.02 Result that we get from the test shows us that the permeabilty number is low, negative skin factor shows us that this well has been stimulated. And the type for this reservoir that we get from Ecrin Software is Homogenous, with Changing Wellbore Storage and the boundary is pararel fault. Even tho the Well Testing showing that the permeability score is low the flow of the well is optimal because this well is a gas well. Quantitatively on the Pressure Build Up Analysis with Horner Method manually result that we get is not so different with Software Ecrin

STUDI LABORATORIUM PENGARUH INJEKSI SURFAKTAN MES TERHADAP CRUDE OIL 39 0API DENGAN TEMPERATUR 60 0C Qashidi, Rafdi Arsyanto; Ridaliani, Onnie; Samsol
Petro : Jurnal Ilmiah Teknik Perminyakan Vol. 14 No. 2 (2025): Juni 2025
Publisher : Jurusan Teknik Perminyakan Fakultas Teknologi Kebumian dan Energi Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/petro.v14i2.19276

Background: Petroleum is a very important natural resource in the world energy industry. However, the process of extracting oil from underground reservoirs often faces various problems, one of which is suboptimal oil recovery. Objective: To increase the efficiency and optimization of oil extraction results, much research has been carried out. Method: In developing methods with additional ingredients, such as surfactants. One group of surfactants that can be used in this process is Methyl Ester Sulfonate (MES) surfactants, where this stage includes the Enhanced Oil Recovery method. In this laboratory research, one surfactant solution was used, namely MES Surfactant with varying concentrations of 5, 6 and 7% with a salinity of 12,000 ppm. This research aims to see how effective MES surfactant is in chemical injection. MES surfactant injection is carried out to increase oil production in the reservoir. In this research, there are various stages for MES surfactant to be declared effective in oil sweeping, including a compatibility test, density test, phase behavior test, interfacial tension test, and core flooding test. The use of surfactant to reduce interfacial tension so that an ift test is carried out. The aim of density measurements is to determine the density of the MES surfactant solution. Test the phase behavior to determine how stable the MES solution is. Results: The IFT (interfacial tension) results of the MES surfactant solution were determined from the results of the stable phase behavior test because this is the critical micelle concentration (CMC) point so that it can properly reduce the interfacial tension between oil and formation water in the reservoir. The interfacial tension value was obtained at 4 dyne/cm. The core used is sandstone which has known core dimensions, bulk volume, pore volume, porosity and permeability. At oil saturation, crude oil is injected to determine how much Original Oil is in Place. after that the core flooding process to determine the recovery factor. Conclusion: In core flooding, the solution used has reached the CMC point with a MES surfactant recovery factor with a concentration of 6% at the CMC point with a recovery factor of 19.44% for surfactant injection and an RF value for water injection or waterflooding of 41.67%.

Modeling and Prediction of Kappaphycus alvarezii Viscosity Using Artificial Neural Network and Adaptive Neuro-Fuzzy Inference System Fathaddin, Muhammad Taufiq; Ridaliani, Onnie; Rakhmanto, Pri Agung; Mardiana, Dwi Atty; Septianingrum, Wydhea Ayu; Irawan, Sonny; Abdillah, Ridho
Journal of Earth Energy Science, Engineering, and Technology Vol. 8 No. 3 (2025): JEESET VOL. 8 NO. 3 2025
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/fh90e382

This study examines the viscosity behavior of Kappaphycus alvarezii polymer solutions enhanced with TiO2 nanoparticles under varying concentrations, salinity, and temperature. Predictive models were developed using Artificial Neural Network (ANN) and Adaptive Neuro-Fuzzy Inference System (ANFIS) approaches. The experimental work involved preparing Kappaphycus alvarezii solutions with polymer concentrations ranging from 2,000 to 6,000 ppm and TiO2 nanoparticle concentrations from 2,000 to 4,000 ppm at salinities of 6,000–30,000 ppm and temperatures between 30 °C and 80 °C. Results showed that increasing Kappaphycus alvarezii concentration enhanced viscosity by 1.04–21.12%, while TiO2 nanoparticles improved viscosity stability, especially under high-salinity conditions. In contrast, higher salinity and temperature reduced viscosity due to ionic screening and increased molecular motion, although a slight rise was observed at 30,000 ppm salinity. The optimized ANN model (18 neurons, one hidden layer) achieved a superior correlation coefficient (r = 0.9980) compared to ANFIS (r = 0.8769), confirming higher predictive accuracy. These findings demonstrate the potential of Kappaphycus alvarezii–TiO2 nanofluids as sustainable viscosity modifiers for enhanced oil recovery (EOR) and verify the reliability of ANN and ANFIS models in predicting viscosity under complex multivariable interactions.

A Regression Analysis Approach to Van Everdingen-Hurst Dimensionless Water Influx Variables for Infinite and Finite Aquifers Muhammad Taufiq Fathaddin; Yarra Sutadiwiria; Taufan Marhaendrajana; Sonny Irawan; Onnie Ridaliani Prapansya; Asri Nugrahanti
Scientific Contributions Oil and Gas Vol 47 No 1 (2024)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.47.1.1612

Water influx calculations have relied on accurate values of the Van Everdingen-Hurst WeD dimensionless variables. For programming and hand calculators, equations are needed to determine WeD. Previous models provide equations for WeD calculations for infinite aquifer cases. This paper presents two sets of regression equations that are simple to apply to obtain accurate values of WeD for either infinite or finite aquifer cases. The proposed equations have good agreement with the Van Everdingen-Hurst method with an average difference of 0.77% and 1.18% for the cases of infinite aquifer and finite aquifer, respectively

Effects of Palm-Oil-Based Methyl Ester Sulfonate (MES) in Laboratory-Scale Enhanced Oil Recovery Process Onnie Ridaliani; Samsol; Rini Setiati; Muhammad Taufiq Fathaddin; Lilian Anggela; Andry Prima; Nandito Davy; Widia Yanti
Scientific Contributions Oil and Gas Vol 48 No 4 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i4.1825

Natural Declining oil production is often caused by reduced natural driving forces within reservoirs. To address this limitation, enhanced oil recovery (EOR) technology introduces external energy or chemical agents to mobilize residual oil. This study evaluated the performance of palm-oil-based methyl ester sulfonate (MES) an anionic and biodegradable surfactant synthesized from renewable feedstock for improving recovery efficiency under laboratory-scale conditions. Core-flood experiments were performed using Berea sandstone cores, intermediate 33°API crude oil, low salinity of 10,000 ppm, synthetic brine at 60 °C. The testing sequence included screening test of palm-oil-based MES, brine saturation, oil saturation, waterflooding, and subsequent surfactant flooding with 1.5% MES solution. During waterflooding, the recovery factor reached 62.8 %, leaving 31.29 % residual oil saturation. Injection of 1.5 wt % MES increased the recovery factor to 68.8 % and reduced residual oil saturation to 26.25 %, indicating enhanced displacement and improved microscopic sweep efficiency. The results confirmed that palm-oil-derived MES effectively mobilizes trapped oil and demonstrates strong potential as an environmentally friendly and locally available surfactant for chemical EOR applications in the reservoirs.

The Effect of TiO2 Nanoparticles on The Performance of Kappaphycus Alvarezii Biopolymer for Enhanced Oil Recovery Muhammad Taufiq Fathaddin; Onnie Ridaliani Prapansya; Pri Agung Rakhmanto; Dwi Atty Mardiana; Wydhea Ayu Septianingrum; Sonny Irawan; Ridho Abdillah
Scientific Contributions Oil and Gas Vol 48 No 3 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i3.1909

This study investigates the performance of a novel, environmentally friendly nanocomposite, utilizing the natural biopolymer Kappaphycus alvarezii enhanced with TiO2 nanoparticles, for Enhanced Oil Recovery (EOR) via polymer flooding. The application of this nanocomposite was aimed to simultaneously enhance microscopic displacement and macroscopic sweep efficiency. The research method used was laboratory testing which included solution stability, viscosity, interfacial tension (IFT), and rock wettability tests in various polymer concentrations (2,000–6,000 ppm), TiO₂ (2,000–4,000 ppm), and salinity (6,000–30,000 ppm) at temperatures of 30–80°C. Quantitative laboratory results confirm fluid property improvements: TiO2 addition increased the solution viscosity by up to 11 cP where an average increase up to 7.11% in high-salinity brines, reduced the Interfacial Tension (IFT) from 7.54 dyne/cm to 6.80 dyne/cm (a 9.8% reduction), and decreased the contact angle from 39.05° to 28.51°, confirming enhanced water-wetness. Core flooding experiments demonstrated that the polymer flooding yielded an incremental oil recovery factor after waterflooding ranging from 6.67% to 27.67%. The maximum total oil recovery achieved was 69.17% at the optimal concentration of Polymer 4,000 ppm and TiO2 2,000 ppm. These specific findings highlight the significant potential of the Kappaphycus alvarezii–TiO2 nanocomposite as an effective EOR agent.

Analysis of The Effectiveness of KCL Polymer on Reactive Clay Formation in The 26 Section of A Field FA1 Wastu, Apriandi Rizkina Rangga; Husla, Ridha; Ridaliani, Onnie; Suci, Farah Adiana Eka; Soekardy, Mentari Gracia; Azizah, Siti
Scientific Contributions Oil and Gas Vol 49 No 1 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i1.2015

In geothermal well drilling, a primary challenge is clay swelling, particularly in reactive clay formations, where drilling success is largely determined by the type of drilling fluid used. Although gel polymer mud is commonly preferred, adding KCl polymer is often necessary to mitigate swelling in such formations. The study aims to evaluate the effectiveness of KCl polymer mud in mitigating clay reactivity in the 26-inch borehole section of X well in a geothermal field. The methodology began with the methylene blue test to assess clay reactivity, followed by the formulation of gel polymer and various concentrations of KCl polymer muds. A linear swell meter test was subsequently conducted to compare the swelling reduction performance of each mud type. The methylene blue test results indicated a smectite content of 60 meq/100 g, confirming the presence of reactive clay in the 26-inch borehole. LSM test results showed that the Gel Polymer mud exhibited 25.78% swelling over 11 hours, indicating it was ineffective for such formations. In contrast, the 7% KCl Polymer mud significantly reduced swelling to 16.38% over 8 hours. This improvement is attributed to the substitution of Na⁺ ions with K⁺ ions, which neutralizes negative charges on clay surfaces and reduces the clay's water-holding capacity. The findings confirm that KCl Polymer mud is more effective in minimizing clay swelling in reactive geothermal formations.

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