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Lessons learned from coreflood experiments with surfactant-polymer and alkali-surfactant-polymer for enhanced oil recovery

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petroleum 2023年第4期9卷 487-498页

作者： Ivan Kurnia Muhammad Fatchurrozi Riyaz Ghulam Anwary Guoyin Zhang Reservoir Engineering Research Group Institut Teknologi BandungIndonesia Petroleum Engineering Undergraduate Study Program Institut Teknologi BandungIndonesia Petroleum Recovery Research Center New Mexico TechUnited States

A review of coreflood experiments for chemically enhanced oil recovery(EOR)is presented in this paper,particularly surfactant-polymer(SP)and alkali-surfactant-polymer(ASP)*** objective of this review is to gain a general outlook and insight from coreflood experiments injecting SP or ASP slug as tertiary *** discussion is separated into sections based on relevant core and fluid properties as well as surfactant selection and SP/ASP slug design and their impact on incremental *** studies in this review have been published within the last twenty years but few older coreflood works have been included for *** in each reviewed study have been summarized in tables to help readers gain detailed *** learned from these past experiments should help other chemical EOR practitioners or students of the field in benchmarking or improving the outcomes of their future SP/ASP experiments.

关键词： Enhanced oil recovery Surfactant Polymer Alkali Coreflood

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Analysis of the Groundwater Table of Theis's Formula Through the Analytical and Numerical Methods Combination for Time-Lapse Microgravity Modeling

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SSRN 2024年

作者： Lestari, Mutia Dyah Dahrin, Darharta Abdurrahman, Dadi Azhari, Naila Yuni Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Jalan Ganesa 10 Bandung40132 Indonesia Geophysical Engineering Study Program Institut Teknologi Sumatera Jalan Terusan Ryacudu Desa Way Hui Lampung Selatan Kecamatan Jatiagung 35365 Indonesia

Massive and continuous well pumping can result in significant groundwater table decline, potentially leading to groundwater depletion and land subsidence over the long term. The timelapse microgravity method, an innovation in gravity measurement techniques, is currently widely used in hydrological applications, including groundwater table monitoring. Groundwater pumping induces changes in subsurface mass distribution, resulting in subsurface mass anomalies that can be detected using gravity method. Many previous studies have employed the slab Bouguer approach to estimate gravity anomalies due to groundwater table changes. This method has significant error for detail anomaly value of groundwater table, which is high decline near production wells. According to Theis formula, the groundwater table decline model as drawdown cone (inverted cone), which gravitational field is calculated. Therefore, calculated gravity anomaly must account for the drawdown cone shape. In this study, gravity anomaly calculations for groundwater drawdown cones are resolved by integrating triple integrals using cylindrical coordinates both analytical and numerical methods. The analytical calculation of integrating triple integrals can only be resolved for two variables (variable z and [[EQUATION]]), and for [[EQUATION]] variable is calculated using numerical methods with the trapezoidal rule. By making the trapezoidal step smaller for closer the well, it is expected this calculation has smaller errors. This study aims to provide more accurate gravity anomaly calculations in accordance with the conceptual model of groundwater table changes. This technique can be used to help groundwater management where monitoring wells is insufficient. © 2024, The Authors. All rights reserved.

关键词： Microgravity

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A Detailed Analysis for the Performance of Artificial Intelligence System in Voice Recognition and its Classifications 3

A Detailed Analysis for the Performance of Artificial Intell...

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3rd International Conference on Advance Computing and Innovative Technologies in engineering, ICACITE 2023

作者： Naibaho, Lamhot Mishra, Richa Ritu Gautam, Dr. Rajasekaran, Suresh Babu Amaresh Jha, Dr Gangodkar, Durgaprasad Christian University of Indonesia Faculty of Letters and Languages English Language Education Study Program Indonesia Parul University Vadodara Parul Institute of Engineering and Technology Department of Cse Gujarat India Sharda University Sharda School of Law U.P. Greater Noida India Group Product Manager United States University of Petroleum and Energy Studies School of Modern Media India Graphic Era Deemed to Be University Department of Cse Uttarakhand Dehradun India

ISBN: (纸本)9798350399264

Artificially intelligent machines possess cognitive capabilities that are comparable to those of human beings. Voice detection algorithms and methods have been developed for the purpose of identifying, differentiating, and verifying speakers. The amalgamation of speech recognition technology and artificial intelligence has facilitated advancements on a global scale. The implementation of conversational artificial intelligence (AI) holds the capacity to significantly transform the market. Law enforcement agencies could potentially employ this technology to identify perpetrators based on their speech patterns. Large-scale social gatherings can provide numerous benefits to researchers across various domains. This technology exhibits the capacity to benefit both the educational sector and the medical and healthcare domain. © 2023 IEEE.

关键词： Speech recognition

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Optimum wellhead pressure selection in the Hululais geothermal field

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AIP Conference Proceedings 2024年第1期3019卷

作者： Eko Widi Pramudiohadi Study Program of Petroleum Engineering Technology Mineral Faculty UPN Veteran Yogyakarta Special Region of Yogyakarta Indonesia

The Hululais field, a geothermal field under the management of PT Pertamina Geothermal Energi, will build 2 x 55 Mwe. The first stage is to build 1x55 Mwe, by selecting a certain wellhead pressure from the output curve to be able to fulfill the first phase of development. Researchers try to calculate in order to meet the needs of the first stage by calculating the decrease in fluid enthalpy which is a function of fluid pressure and temperature, the pressure loss profile is obtained from the Beggs and Brill equations and the temperature loss profile from the energy balance law, using two-dimensional Newton Rapson mathematical manipulation, to get pressure and temperature drops simultaneously in a pipe segment. While exergy is useful energy, by looking at the exergy at the wellhead, at the output of the steam separator and the turbine input, the optimum choice of the exergy plot for the three points, the sloping line is chosen. Besides, the power that can be generated by the generator is a function of the enthalpy and mass of the steam. The optimum results are: wellhead pressure C-1, 18.34 bar, E-1 wellhead pressure 18.34 bar, wellhead pressure E-2 has a pressure of 12.26 bar. Two-phase pipes use 16 in to 28 in, on single-phase steam pipes use a diameter of 16 inches to 36 inches, all pipes are coated with 8 cm insulation, using rockwooll insulation, on two-phase pipes, the magnitude of the pressure loss is 0.623 bar, the temperature drop is 1,9083 °C, The distance between the separator and turbine varies, the farthest is 6460 m, the closest is 1824 m. Until the turbine inlet, the incoming steam mass is 94.01 kg/s, the pressure is 8.45 bar, the temperature is 177.4 °C, the exergy price in the turbine is 76.77 MWth, the power that can be generated is 56.431Mwe.

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Implications for fault locking south of Jakarta from an investigation of seismic activity along the Baribis fault, northwestern Java, Indonesia

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SCIENTIFIC REPORTS 2022年第1期12卷 1-10页

作者： Widiyantoro, S. Supendi, P. Ardianto, A. Baskara, A. W. Bacon, C. A. Damanik, R. Rawlinson, N. Gunawan, E. Sahara, D. P. Zulfakriza, Z. Husni, Y. M. Lesmana, A. Global Geophysics Research Group Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Bandung 40132 Indonesia Faculty of Engineering Maranatha Christian University Bandung 40164 Indonesia Agency for Meteorology Climatology and Geophysics (BMKG) Jakarta 10720 Indonesia Department of Earth Sciences Bullard Labs University of Cambridge Cambridge CB3 0EZ UK Geophysical Engineering Study Program Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Bandung 40132 Indonesia PT. Reasuransi Maipark Multivision Tower Menteng Atas Jakarta 12960 Indonesia

Recent borehole seismic deployments conducted along the Baribis Fault in northwestern Java reveal that it may be active. In this study, we exploit these data to locate proximal earthquakes using a relative relocation technique, estimate their moment magnitudes using a spectral fitting method and compute their focal mechanisms via waveform inversion. We observe that seismicity in the eastern part of the fault is significantly higher than in the west, where a previous GPS study of the region south of Jakarta demonstrated the existence of high compression rates. These observations imply that the western Baribis Fault is locked, and that neighbouring areas, including southern Jakarta and its surroundings, may be highly vulnerable to future sizeable earthquakes when accumulated elastic strain energy is eventually released during fault rupture. Significantly, the current generation of Indonesia's national hazard maps have not considered seismicity along the Baribis Fault. Our new results therefore call for an urgent reappraisal of the seismic hazard in northwestern Java that carefully takes into account the Baribis Fault and its earthquake potential, particularly in light of its proximity to Jakarta, a megacity that lies at the heart of one of the most densely populated islands in the world.

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Geochemical Investigation on the Implications of Fluid Origin, Subsurface Processes and Recharge on the Tangkuban Perahu Geothermal Conceptual Model

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SSRN 2022年

作者： Kobare, Nyora Donald Suryantini, Suryantini Iskandar, Irwan Geothermal Engineering Master’s Program Faculty of Mining and Petroleum Engineering Bandung Institute of Technology Jl. Ganesha 10 Bandung40132 Indonesia Department of Geosciences School of Mines and Geosciences University of Dar es Salaam 16103 Uvumbuzi Road Dar es Salaam Tanzania United Republic of Geological Engineering Study Program Faculty of Earth Sciences and Technology Bandung Institute of Technology Jl. Ganesha 10 Bandung40132 Indonesia

Tangkuban Perahu and nearby volcano-hosted geothermal prospects are believed to be important for future power generation in West Java, Indonesia. Recharge areas of these prospects and geothermal fluid evolution are not yet fully understood. The objectives of this investigation are to describe the fluid origin, processes, and evolution of geothermal fluids in relation to the recharge and the conceptual model of the Tangkuban Perahu Geothermal Systems (TPGS). The investigation involved sampling and analysis of geothermal waters, rainwater, and gases collected in fumaroles and other manifestations around the TPGS. Isotopic results of δ18O and δ2H collected from thermal and rainwater indicate deep-circulating meteoric origin, at an infiltration altitude ranges between 753-850 m in low terrain. Meanwhile, the high-standing terrain indicates the recharge zone to be within the wall of the Sunda Caldera and mountain slopes. Chondrite normalized patterns reveal an overall flat trendline that suggests the enrichment of Lower Rare Earth Elements (LREEs) in the central part of Tangkuban Perahu which is derived from the magmatic influx. The non-atmospheric gases origin was diagnosed by the lower N2/Ar (≤ 38) and is characterized of meteoric origin. The positive δ18O shifts from Ciater (CT), Batu Gede (BG), and Domas crater (KwD) geothermal waters samples comparatively to local meteoric lines are influenced by the interaction with wall rocks or magmatic influx. In these geothermal systems, the meteoric water infiltrated to the depth is heated, mixed with near-surface water, and followed by partial discharge as thermal springs along faults. © 2022, The Authors. All rights reserved.

关键词： Partial discharges

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Investigation of a novel biocide material for biocorrosion in simulated seawater: A case study on Tinospora cordifolia extract

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Case Studies in Chemical and Environmental engineering 2024年 10卷

作者： Royani, Ahmad Hanafi, Muhammad Aigbodion, Victor Sunday Prastya, Muhammad Eka Verma, Chandrabhan Mubarak, Nabisab Mujawar Alfantazi, Akram Manaf, Azwar Research Center for Metallurgy National Research and Innovation Agency – BRIN Kawasan Puspiptek Banten Tangerang Selatan 15314 Indonesia Postgraduate Program of Materials Science Study Department of Physics Faculty of Mathematics and Natural Sciences Universitas Indonesia Depok 16424 Indonesia Research Center for Pharmaceutical Ingredients and Traditional Medicine National Research and Innovation Agency – BRIN Kawasan Puspiptek Banten Tangerang Selatan 15314 Indonesia Department of Metallurgical and Materials Engineering University of Nigeria Nsukka 410001 Nigeria Department of Chemical and Petroleum Engineering Khalifa University of Science and Technology P.O. Box 127788 Abu Dhabi United Arab Emirates Petroleum and Chemical Engineering Faculty of Engineering Universiti Teknologi Brunei Bandar Seri Begawan BE1410 Brunei Darussalam Department of Biosciences Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Chennai India

This case report investigates the preventive effect of Tinospora cordifolia extract on biocorrosion induced by Pseudomonas aeruginosa on mild steel API 5L in the simulated seawater medium. Electrochemical techniques, spectroscopic techniques, and surface analysis were employed to investigate biocide performance and corrosion behavior. P. aeruginosa has been shown to enhance iron dissolution in seawater medium. These findings point to the role of P. aeruginosa bacteria in forming differential oxygen, which causes corrosion. Morphology results from atomic Fourier microscopy (AFM) highlight the presence of P. aeruginosa in biotic environments, where the surface is rougher than in abiotic conditions. On the other hand, adding T. cordifolia to the biotic medium resulted in a smoother and more homogeneous surface without any significant deterioration. Electrochemical findings reveal that adding 300 mg L⁻¹ of T. cordifolia extract prevents the microbiologically influenced corrosion (MIC) of steel API 5L, with an optimum effectiveness value of 74.50 % after 21 days of incubation. This protective effect is caused by forming a more compact iron oxide surface layer and the adsorption of phenolic active compounds such as Moupinamide and others on the surface of mild steel API 5L, as detected by liquid chromatography-mass/spectrometry-mass spectrometry (LCMS-MS), Fourier-transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FE-SEM) techniques. © 2024 The Authors

关键词： Bio-corrosion Biofilm Green biocide Plant extract Pseudomonas aeruginosa Tinospora cordifolia

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Petrophysics and rock physics using VTI model for low permeability and high porosity reservoir in CCS Gundih gas field pilot project, Indonesia 2

Petrophysics and rock physics using VTI model for low permea...

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2nd Southeast Asian Conference on Geophysics, SEACG 2018

作者： Fatkhan Danio, H. Anggarini, L.T. Mudatsir, O.A. Sule, M.R. Seismology Exploration and Engineering Research Group Faculty of Mining and Petroleum Engineering Institut Teknologi Bandung Indonesia Geological Engineering Study Program Universitas Pertamina Indonesia Geological Engineering Study Program Institut Teknologi Bandung Indonesia

A pilot Carbon Capture and Storage (CCS) project in Indonesia is planned to be implemented in Gundih area, Central Java Province in Indonesia. Prior to conducting CO2 injection, reservoir characterisations have to study thoroughly to assure that the reservoir is to meet with CCS standard requirements. The Jepon well in the Gundih fied was proposed as a suitable site for CO2 injection. The decision was made to proceed with a comprehensive site assessment and geological modelling of the Jepon area. This site was selected based on the reason the presence of a potentially suitable reservoir (Ngrayong Sandstone) and primary and secondary seals (Bulu Limestone and Wonocolo claystone). Using logging data, petrophysics and rock physics model are used to evaluate potential of the CO2 injection site. Permeability results from petrophysics calculations and recent injection tests show very small;whilst porosity is relatively high. This can be caused by fractures mostly are not connected. Hence, rock physics for the reservoir is evaluated and modelled as anisotropy or Vertical Tranverse Isotropy (VTI) in which fractures with preferred orientation. Stiffness calculations for VTI medium with different aspect ratio shows consistent with low permeability result. © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Carbon capture

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A Detailed Analysis for the Performance of Artificial Intelligence System in Voice Recognition and its Classifications

A Detailed Analysis for the Performance of Artificial Intell...

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Advance Computing and Innovative Technologies in engineering (ICACITE), International Conference on

作者： Lamhot Naibaho Richa Mishra Dr. Ritu Gautam Suresh Babu Rajasekaran Dr Amaresh Jha Durgaprasad Gangodkar Faculty of Letters and Languages English Language Education Study Program Christian University of Indonesia Department of CSE Parul Institute of Engineering and Technology Parul University Vadodara Gujarat India Sharda School of Law Sharda University Greater Noida U.P. INDIA Group Product Manager United State School of Modern Media University of Petroleum and Energy Studies Department of CSE Graphic Era Deemed to be University Dehradun Uttarakhand India

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Evaluation of engineering in ESP installation with various reservoir properties in the offshore X field

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IOP Conference Series: Earth and Environmental Science 2021年第1期802卷

作者： D Rosadi S Kasmungin R Setiati Petroleum Engineering Study Program Universitas Trisakti Jakarta Indonesia

Oil wells in the x field in the offshore Natuna Indonesia generally use gas lifts as artificial lifts. As time goes, the field enters of oil production decline phase. To maintain oil production and evaluate the other artificial lift, the Electric Submersible Pump or ESP method was conducted on five wells A-01, A-02, A-03, A-04, and A-05, with various reservoir properties. The research objective is to evaluate the technical application of the ESP and obtain the highest potential well to increase oil recovery. The methodology was carried out by collecting field primary data such as reservoir data, Depth, slope, etc. Then the ESP application design is carried out by manually calculating the wells. Result and discussion: based on the calculations, the ESP method can be applied to wells A-01, A-02, A-03, and A-04. A-05 cannot be used well because it has a high turpin meter value (16.35) due to a high GOR (Gas Oil Ratio) value of 2385 SCF/STB. The well with the highest potential to increase oil recovery is well A-01 with the additional oil production +1116 BOPD. It can be concluded that the most potential to be developed into ESP well is A-01.

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