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Mardiana, Dwi Atty
Universitas Trisakti
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Aplikasi Penggunaan Well Head Compressor Pada Sumur X Untuk Mengatasi Problem Liquid Loading Nurkhozin Adhi Nugroho; Muh Taufiq Fathaddin; Dwi Atty Mardiana
Jurnal Migasian Vol 2 No 2 (2018): Jurnal Migasian
Publisher : LPPM Institut Teknologi Petroleum Balongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36601/jurnal-migasian.v2i2.42

Abstract

Sumur “X” mengalami problem liquid loading dikarenakan laju alir gas kurang dari critical velocity oleh karena itu dilakukan metode delikuifikasi dengan menggunakan well head compressor. Tujuan dari penelitian ini adalah mengidentifikasi terjadi liquid loading pada sumur gas, menghitung critical velocity loading, melakukan analisis nodal pada sumur “X” dan membuat kurva IPR, menganalisa sensitivitas nilai Pwh dan water gas ratio terhadap laju produksi pada aplikasi well head compressor, melakukan analisa teknis dan ekonomi penggunaan well head compressor. Metodologi yang digunakan dalam penelitian ini adalah identifikasi liquid loading dengan laju alir kritis (critical velocity) menggunakan metode Coleman, membuat model sumur dengan bantuan perangkat lunak PROSPER, aplikasi metode well head compressor dengan sensitivitas beberapa Pwh dengan bantuan perangkat lunak PROSPER, evaluasi laju produksi beberapa Pwh asumsi terhadap laju alir kritis, menganalisa sensitivitas nilai Pwh dan water gas ratio (WGR) terhadap laju produksi pada aplikasi well head compressor dan melakukan analisa teknis dan ekonomi penggunaan well head compressor pada sumur X. Dari hasil perhitungan Pwh kondisi existing di dapatkan nilai laju alir loading berdasarkan metode Coleman sebesar 0,276 MMSCFD dan nilai critical velocity loading sebesar 34,061 ft/sec. Dengan bantuan software PROSPER 11.5 terbentuk kurva IPR yang menghasilkan nilai absolute open flow (AOF) sebesar 1,178 MMSCFD. Pada simulasi tekanan Pwh sebsar 10 Psig menghasilkan nilai laju alir gas sebesar 0,213 MMSCFD dan laju alir kritis loading sebesar 0,205 MMSCFD. Nilai NPV pada opsi beli sebesar 0,18 dan pada opsi sewa sebesar 0,24, nilai IRR pada opsi beli sebesar 8,07 % dan pada opsi sewa nilai IRR lebih dari 100%, nilai POT pada opsi beli sebesar 10 bulan dan pada opsi sewa sebesar 1 bulan. Opsi sewa lebih di pilih karena lebih baik nilai parameter NPV, IRR dan POT. Dari hasil simulasi dengan software PROSPER penggunaan well head compressor dapat di gunakan untuk mengatasi problem liquid loading pada sumur X yaitu pada P suction 10 Psig atau lebih kecil tidak akan terjadi liquid loading. Dari sensitivitas nilai Pwh dan WGR terhadap laju produksi gas dapat terlihat dari laju produksi yang dihasilkan, semakin kecil nilai Pwh dan WGR maka laju produksi akan semakin besar.
RIGLESS WELL INTERVENTION AND SAND CONSOLIDATION CHEMICAL APPLICATION TO SOLVE SAND PROBLEM OF ABC-2 WELL IN X FIELD Yeriandi Utama; Dwi Atty Mardiana; Asri Nugrahanti
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.v8i2.17316

Abstract

The decline in well production due to sand problems is the biggest challenge in a field that has been producing for a long time, especially in mature fields. In addition, and problems are also able to damage both the downhole and surface equipment of a well. Creating the right job design for sand cleanout and sand control is absolutely necessary to solve this problem. Rig less well intervention with coiled tubing is used to optimize this process. The sand cleanout job design is created using Insite for Well Intervention (IWI) software to create the right job design. In addition, a sand control method with sand consolidation chemicals will be applied to prevent the recurrence of sand problems after the well has been cleaned. The findings of the study indicate that the proper job design is able to clean the sand to target depth and restore the production of the ABC-2 wells to its pre-sand problem level. All factors, including sieve analysis, well data, coiled tubing data, and sand consolidation chemical, are taken into consideration during job design. Therefore, the sand issue in another mature well at the X field can be solved using this approach
A A Comparison of Economics and Attractiveness of Fiscal System in Several Southeast Asian Countries : A Case Study of Three Oil And Gas Field in Indonesia Gabriela Martines Martines; Dwi Atty Mardiana; Pri Agung Rakhmanto
Journal of Earth Energy Science, Engineering, and Technology Vol. 6 No. 2 (2023): JEESET VOL. 6 NO. 2 2023
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jeeset.v6i2.17397

Abstract

The implementation of fiscal terms in the upstream oil and gas industry in a country is carried out with the hope of accelerating the decision-making process and making the attractiveness of upstream oil and gas investment more attractive to investors. This study evaluates fiscal terms in a country in a region used in Indonesia, Malaysia, Thailand, and Vietnam to determine the attractiveness of the fiscal terms. Using several indicators of government take (GT), front loading index (FLI), and composite score (CS), the fiscal attractiveness ranking of five fiscal schemes will be analyzed so that investors can consider which fiscal scheme is most attractive for their investment. The results of the economic analysis based on the economic indicators of IRR, NPV, POT, and PI show that the newly developed onshore, existing onshore, and offshore gas fields are included in the investment feasibility criteria with attractive economic values when applied with all fiscal schemes. While the ranking results with GT, FLI, and CS indicators show that Indonesia's gross split PSC has an attractive attractiveness when applied to newly developed onshore fields, R/C PSC on existing onshore fields, and Thailand’s concessions on offshore gas fields.
Viscosity Modeling and Prediction of Amorphophallus oncophyllus and Sapindus rarak Using Machine Learning Methods Fathaddin, Muhammad Taufiq; Mardiana, Dwi Atty; Sutiadi, Andrian; Maulida, Fajri
Jurnal Fisika dan Aplikasinya Vol 21, No 1 (2025)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v21i1.21953

Abstract

Viscosity plays an important role in regulating the mobility of fluids injected into the reservoir to increase the efficiency of oil sweeping. This study discusses the application of Machine Learning methods, namely ANN and ANFIS, to model the correlation of physical properties of Amorphophallus oncophyllus and Sapindus rarak solutions. The purpose of this study is to obtain a correlation to determine the viscosity of the polymer solutions. The data used include viscosity measurements for 21 samples of Amorphophallus oncophyllus and Sapindus rarak solutions with variations in concentration and salinity. The data is augmented by digitization for modeling. The results show that both Machine Learning methods can estimate viscosity values well. Very accurate results are achieved by applying ANN and ANFIS with average correlation coefficients of 0.997240 and 0.995124, respectively.
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

Abstract

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.
Utilizing Used Lubricants to Enhance Intermediate Crude Oil Recovery Through Water-in-Oil Emulsions Mukhlis Noor Alfatih; Dwi Atty Mardiana; Shabrina Sri Riswati; Changhyup Park
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.v48i4.1924

Abstract

This study experimentally analyzes the impacts of water-in-oil (W/O) emulsion derived from used lubricants on enhanced intermediate-crude-oil recovery. The objective is to identify a viable and economically efficient method to enhance the extraction of intermediate crude oil. Typically, W/O emulsions have been employed as displacing fluids in heavy oil reservoirs. According to the results, there have been challenges experienced in the selection of an affordable petroleum-based product and ensuring its availability for emulsion preparation. Used lubricants can be incorporated as a component in the formulation of an emulsion solution by mixing them with brine. The physical and chemical properties of these used lubricants are evaluated to determine their suitability as a displacing agent. Subsequently, several concentrations of the emulsion were prepared, ranging from 5% to 60% (vol/vol), to effectively evaluate their suitability as a displacing fluid. The experimental workflow covered viscosity testing, mobility ratio measurement, IFT evaluation, emulsion stability checks, adsorption analysis, and thermal stability assessment. Core-flooding is performed to determine the recovery factor. A 5% W/O emulsion is found to be an effective displacing fluid for intermediate crude oil. The core-flooding results showes about a 27% increase in recovery when using the conventional flooding emulsion. Overall, the findings indicate that adding used lubricants to W/O emulsions improves intermediate oil recovery due to their favorable viscosity and stability.
Co-Authors Adam Fatchur Rohman Adi Novriansyah Andri Kosasih Andri Kosasih Asri Nugrahanti Avty Vilanti Changhyup Park Chrismon, Chrismon Fathaddin, Muhammad Taufiq Gabriela Martines Martines Gabriela Martines Sariallo Kartoatmodjo, R.S. Trijana Maulida, Fajri Muh Taufiq Fathaddin Muh Taufiq Fathaddin, Muh Taufiq Muhammad Abizar Algiffary Thahir Muhammad Taufiq Fathaddin, Muhammad Taufiq Mukhlis Noor Alfatih Muslim Abdurrahman Nanda Josenia Sainuka Nugroho, Nurkhozin Adhi Nurkhozin Adhi Nugroho Onnie Ridaliani, Onnie Pauhesti Pauhesti Pri Agung Rakhmanto Pri Agung Rakhmanto Ridho Abdillah Shabrina Sri Riswati Shabrina Sri Riswati Shabrina Sri Riswati Sonny Irawan Sugianto Kasmungin Sugiatmo Kasmungin Sutiadi, Andrian Syamsul Irham Wisup Bae Wydhea Ayu Septianingrum Yeriandi Utama