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List of Presentations
Yuichi Sugai Last modified date：2023.11.22

Professor / Department of Earth Resources Engineering / Department of Earth Resources Engineering / Faculty of Engineering


Presentations
1. Taishi Tsubokawa, Ronald Nguele, Takehiro Esaki, Yuichi Sugai, Development of carbon dioxide separation membranes using nanoparticles, International Symposium on Earth Science and Technology 2022, 2022.12.
2. Hemeng Zhang, Jiafeng Fan, Zhiyu Zhang, Yongjun Wang, Fangwei Han, Zhanming Zhang, Xiaoming Zhang, Yuichi Sugai, Kyuro Sasaki, Numerical simulations on coal spontaneous combustion in the gob of U-type ventilation considering the aging effect, International Symposium on Earth Science and Technology 2022, 2022.12.
3. Yongjun Wang, Qian Zheng, Wei Dong, Jinfeng Meng, Huixin Chen, Hemeng Zhang, Yuichi Sugai, Xiaoming Zhang, Kyuro Sasaki, Dynamic Correlation between Surface CO2 Flux and Goaf Spontaneous Combustion of Haizhou Open-pit Coal Mine, International Symposium on Earth Science and Technology 2022, 2022.12.
4. Meakh Sovanborey, Yuichi Sugai, Preliminary Investigation on Impacts of Temperature, Pressure, Viscosity, and Solubility on Expansion of CO2-based Foamy Bitumen, International Symposium on Earth Science and Technology 2022, 2022.12.
5. Danielle Poungui，Yuichi Sugai，Kyuro Sasaki，Ronald Nguele, Swelling Mechanism Assessment of Water-based Drilling Mud by Polyvinyl Alcohol, SPE/IATMI Asia Pacific Oil and Gas Conference and Exhibition 2022, 2022.10.
6. Miu Ito，Yuichi Sugai, Evaluation of the Potential of Foam Producing Microorganism Improving Heterogeneity of Permeability for Novel Microbial Foam EOR, SPE/IATMI Asia Pacific Oil and Gas Conference and Exhibition 2022, 2022.10.
7. Theodora Noely Tambaria、Yuichi Sugai, 南スマトラ炭田におけるCO2地中貯留とCO2-ECBMを目的とした石炭へのCO2吸着に関する研究, 資源・素材2022（福岡）, 2022.09.
8. Miu Ito，Yuichi Sugai, Study on Enhanced Oil Recovery Using Microorganism Generating Foam in Presence of Nanobubbles, SPE/IATMI Asia Pacific Oil and Gas Conference and Exhibition 2021, 2021.10.
9. Theodora Noely Tambaria、Yuichi Sugai, コールベットメタンの増進回収を目的とした石炭へのガス吸着に関する研究, 資源・素材2021（札幌）, 2021.09.
10. Nam Nguyen Hai Le，Yuichi Sugai, マイクロバブル化したCO2を用いた石油増進回収技術の検討, 資源・素材2021（札幌）, 2021.09.
11. Miu Ito，Yuichi Sugai, Study on Foam Enhanced Oil Recovery Technique Using Foam Generating Microorganism Activated by Nanobubbles, 2021 2nd International Conference on Oil, Gas and Coal Technology, 2021.07.
12. Margret Khaloian，Yuichi Sugai, A Study of Carbon Dioxide Removal from Flue Gas by Sodium Metasilicate Solution Using Shallow Formations, International Conference on Petroleum, Oil and Gas Exploration Research (ICPOGER 2021), 2021.06.
13. Khaloian Margret，佐々木久郎，菅井裕一，Nguele Ronald, 地下浅層を利用したメタケイ酸ナトリウム溶液による排ガスからの二酸化炭素回収・固定に関する研究, 令和3年度石油技術協会春季講演会, 2021.06.
14. Le Nguyen Hai Nam，菅井裕一，Nguele Ronald，佐々木久郎, CO2マイクロバブルの気泡径と安定性に及ぼすポリマーおよび界面活性剤濃度の影響, 令和3年度石油技術協会春季講演会, 2021.06.
15. Qiang Sun，佐々木久郎，菅井裕一，Nguele Ronald, 初期CO2地中貯留段階における圧入井と観測井の圧力応答について, 令和3年度石油技術協会春季講演会, 2021.06.
16. Poungui Danielle，佐々木久郎，菅井裕一，Nguele Ronald, 掘削泥水の浸透性におよぼすポリビニルアルコールの影響に関する実験的検討, 令和3年度石油技術協会春季講演会, 2021.06.
17. Danielle Poungui, Sasaki Kyuro, Sugai Yuichi, Ronald Nguele, Synergy between Poly Vinyl Alcohol and Bentonite in Drilling Fluid Formation: An Experimental Study, 1st International Symposium on Construction Resources for Environmentally Sustainable Technologies, 2021.03.
18. Muhammad Alfiza Farhan, Sugai Yuichi, Sasaki Kyuro, Ronald Nguele, Study on Soil Methane Gas Emissions Monitoring Using Adsorbent in a Wide-Scale Area, International Symposium on Earth Science and Technology 2020, 2020.11.
19. Hikaru Hirota, Ronald Nguele，Sasaki Kyuro，Sugai Yuichi, Mitigation of Asphaltene Precipitation during CO2 Injection using modified Polyvinyl Alcohol and nanofluids, International Symposium on Earth Science and Technology 2020, 2020.11.
20. Yuta Suzuki，Sugai Yuichi，Sasaki Kyuro, Ronald Nguele, Fundamental study on the enhanced oil recovery technique using CO2 microbubble solution, International Symposium on Earth Science and Technology 2020, 2020.11.
21. Ronald Ssebadduka，佐々木久郎, Nguele Ronald，菅井裕一, ストークス・アインスタイン式に基づく粘度推定と原油膨潤時間曲線によるCO2の拡散係数の推定, 令和2年度石油技術協会学術大会, 2020.10.
22. Tola Sreu，佐々木久郎，菅井裕一, Nguele Ronald, 油回収を強化するためのナノ流体を使用した排水のイオン追跡に関する研究, 令和2年度石油技術協会学術大会, 2020.10.
23. Vatana Mom，佐々木久郎, Nguele Ronald，菅井裕一, 高温での重質原油の物理的性質に対する微粒子分散の影響, 令和2年度石油技術協会学術大会, 2020.10.
24. Nguele Ronald，菅井裕一，佐々木久郎, ナノ粒子とナノコンポジット：原油生産の改善, 令和2年度石油技術協会学術大会, 2020.10.
25. Tola Sreu，Ronald Nguele，Sugai Yuichi，Sasaki Kyuro, Nanofluid Flooding for Enhanced Oil Recovery: Study on Ion Tracking of Produced Fluid, International Symposium on Earth Science and Technology 2019, 2019.12.
26. Samneang Chea，Sasaki Kyuro，Ronald Nguele，Sugai Yuichi, In-Situ Gelation, Characterization and Pore Blocking Performance In Heterogeneous Reservoir, International Symposium on Earth Science and Technology 2019, 2019.12.
27. Muhammad Alfiza Farhan，Made Astawa Rai，Yuichi Sugai, Probabilistics of plane failure using monte carlo simulation in slope stability analysis with limit equilibrium method, 8th World Conference on Applied Sciences, Engineering and Management, 2019.12.
28. Hung Vo Thanh，Yuichi Sugai，Ronald Nguele，Kyuro Sasaki, Optimization CO2 sequestration through water alternating gas process under geological uncertainties, 8th World Conference on Applied Sciences, Engineering and Management, 2019.12.
29. Ronald Ssebadduka，Kyuro Sasaki，Yuichi Sugai, An analysis on the possible financial savings on a carbon capture process using carbon dioxide absorption and geological dumping, 8th World Conference on Applied Sciences, Engineering and Management, 2019.12.
30. Hiroki Morifuji，Yuichi Sugai，Kyuro Sasaki, Investigation of gas adsorption on coal in CO2-CH4 mixed system for enhanced coalbed methane recovery, 8th World Conference on Applied Sciences, Engineering and Management, 2019.12.
31. Nao Miyazaki，Yuichi Sugai，Kyuro Sasaki，Yoshifumi Okamoto，Satohiro Yanagisawa, Consideration of effective binding inhibitor between an anionic bio-surfactant and calcium ion for the bio-surfactant enhanced oil recovery, 8th World Conference on Applied Sciences, Engineering and Management, 2019.12.
32. Yuichi Sugai, Challenges to Advance Microbial Enhanced Oil Recovery Technique to a Practical Technique, 8th World Conference on Applied Sciences, Engineering and Management, 2019.12.
33. Minato Ito，Yuichi Sugai，Kyuro Sasaki，Ronald Nguele , Study on a technique counting bacterial population of target microorganisms in reservoir using flow cytometry, The International Biohydrometallurgy Symposium 2019, 2019.10.
34. Sugai Yuichi, Study on Microbial Conversion of CO2 into CH4 in Oil Reservoir using Oil-degrading-hydrogen-producing Bacteria and Methanogens, The International Biohydrometallurgy Symposium 2019, 2019.10.
35. San Yee Khaing，Yuichi Sugai，Kyuro Sasaki, Study on iodide-oxidising bacteria generating potential lixiviant solution for gold leaching
, The International Biohydrometallurgy Symposium 2019, 2019.10.
36. Hung Vo Thanh, Yuichi Sugai, Ronald Nguele, Kyuro Sasaki, Integrated Artificial Neural Network and Object-based Modelling for Enhancement History Matching in a Fluvial Channel Sandstone Reservoir, SPE Asia Pacific Oil and Gas Conference and Exhibition, 2019.10, Modelling accurately lithofacies and petrophysical properties is an important yet challenging process especially at the beginning of exploration and production from hydrocarbon reservoirs. However, the limited amount of well data and core data are the main issues facing conventional modelling processes. In this paper, Artificial Neural Network (ANN), Sequential Gaussian Simulation (SGS), Co-kriging and object-based modelling (OBM) were integrated as the enhancement framework for lithofacies and petrophysical properties modelling in the fluvial channel sandstone reservoir.
In the OBM, multiple fluvial channels were generated in the lithofacies model. The result of this model represented all the characteristic of the fluvial channel reservoir. The model was then distributed with channels, crevasse, and leeves depositional facies with background shale. Multiple geological realizations were made and cross-validation to select the most suitable lithofacies distribution. This model was cross-validated by modelling the porosity and permeability properties using Sequential Gaussian Simulation.
Thereafter, the modelling process continued with Artificial Neural Network. Petrophysical properties (mainly porosity and permeability) were predicted by training various seismic attributes and well log data using the ANN. Applying the co-kriging algorithm, the predicted ANN model was integrated with OBM simulated lithofacies model to preserve the fluvial features of the geological system. To achieve full field history matching, the final geological model was upscaled to serve as input data in dynamic history matching.
An excellent and nearly perfect history matching with a least mismatch was obtained between the measurement and simulated bottom hole pressure from well test and production history. The results indicated that an efficient integrated workflow of ANN and other geostatistical approaches are imperative to attaining an excellent history matching..
37. Yuichi Sugai, Increase oil reserves!, The Second International Conference on Science, Engineering and Technology, 2019.09.
38. San Yee Khaing, Yuichi Sugai, Kyuro Sasaki, Novel Hydrometallurgical Method for Gold Leaching from Ore Using Iodide-Oxidising Bacteria, International Symposium on Earth Science and Technology 2018, 2018.11.
39. Jumpei Mikumo, Yuichi Sugai, Kyuro Sasaki, Investigation of a novel enhanced oil recovery technique using yeast residue, International Symposium on Earth Science and Technology 2018, 2018.11.
40. Nao Miyazaki, Yuichi Sugai, Kyuro Sasaki, Yoshifumi Okamoto, Chencan Ouyang, Dual role of citric acid as a binding inhibitor of anionic surfactant with bivalent cations and co-surfactant on bio-surfactant EOR, Abu Dhabi International Petroleum Exhibition and Conference 2018, 2018.11.
41. Masaki Uematsu, Yuichi Sugai, Kyuro Sasaki, Ronald Nguele, Investigation of the potential of polyvinyl alcohol as an inhibitor of spontaneous combustion of low rank coal, 7th World Conference on Applied Sciences, Engineering & Management, 2018.10.
42. Vo Thanh Hung, Yuichi Sugai, Kyuro Sasaki, An Object-Based Modeling and Simulation of CO2 Plume Dynamic in Saline Formation in Nam Vang Field, Cuu Long Basin, Vietnam, The 24th Formation Evaluation Symposium of Japan, 2018.10.
43. Yuichi Sugai, Challenges to Advance Microbial EOR Technique to a Practical Technique, Rundown Seminar International on "Maximizing More Barrels in Brownfield Rejunevation Through Enhanced Oil Recovery", 2018.08.
44. Masaki Uematsu, Yuichi Sugai, Kyuro Sasaki, The Developing Equipment for Evaluation to Coal Spontaneous Combustion
, Mining in Asia International Symposium, 2018.07.
45. San Yee Khaing, Yuichi Sugai, Kyuro Sasaki, Isolation and Culturing of Iodide-Oxidising Bacteria(IOB) from Brine, Mining in Asia International Symposium, 2018.07.
46. Eric Owusu Ansah, Yuichi Sugai, Kyuro Sasaki, Numerical Simulation of an Oil Viscosity Reduction Microbe for Enhanced Oil Recovery, 80th EAGE Conference & Exhibition 2018, 2018.06.
47. Salmawati, Kyuro Sasaki, Yuichi Sugai, Development of the Continuous Monitoring System for Measuring the Soil Surface CO2 Flux, 6th World Conference on Applied Sciences, Engineering & Technology, 2017.08.
48. Kyuro Sasaki, Yuichi Sugai, Salmawati, Wataru Kawasaki, Spontaneous combustion of low rank coal; Measurement of the critical self-ignition temperature, 6th World Conference on Applied Sciences, Engineering & Technology, 2017.08.
49. Evan Rosyadi Ogara, Yuichi Sugai, Kyuro Sasaki, Ferian Anggara, The Effect of Coal Characteristics on Adsorption and Desorption Gas at Indonesia Low Rank Coal, International Symposium on Earth Science and Technology 2017, 2017.12.
50. Vo Thanh Hung, Jarot Setyowiyoto, Djoko Wintolo, Yuichi Sugai, Reservoir Characterization of E Sequence In Nam Vang Field, Cuu Long Basin, Viet Nam, International Symposium on Earth Science and Technology 2017, 2017.12.
51. Maghfirotul Amaniyah, Dea Indriani Astuti, Isty Adhitya Purwasena, Yuichi Sugai, Experimental Study of Biosurfactant Produced by Microorganism Isolated from Oil Reservoir for Microbial Enhanced Oil Recovery (MEOR) Using Sand-Pack Column, International Symposium on Earth Science and Technology 2017, 2017.12.
52. Ryo Ohashi, Kyuro Sasaki, Yuichi Sugai, Alade S. Olalekan, A Production Scheme for Bitumen Production from Oil Sands Reservoir with Forming Emulsion by Injecting Hot Surfactant Solution, The 23rd Formation Evaluation Symposium of Japan, 2017.10.
53. Tola Sreu, Kyuro Sasaki, Yuichi Sugai, Wettability Alteration of Sandstone with Zinc Oxide Nano-Particles, The 23rd Formation Evaluation Symposium of Japan, 2017.10.
54. Samneang Chea, Kyuro Sasaki, Yuichi Sugai, Yuji Yoshiki, Sodium Metasilicate as Blocking Performance for Enhanced Oil Recovery (EOR), The 23rd Formation Evaluation Symposium of Japan, 2017.10.
55. Gen Murakami，Yuichi Sugai，Kyuro Sasaki, Preliminary Study on In-situ Realtime Quantitation of Target Bacteria on the Principle of Flow Cytometry, 22th International Biohydrometallurgy Symposium, 2017.09.
56. Jumpei Tamai，Yuichi Sugai，Kyuro Sasaki, Measurement of the IFT between Oil and Water in which CO2 is dissolved, 6th World Conference on Applied Sciences, Engineering & Technology, 2017.08.
57. Noritaka Shimatani，Yuichi Sugai，Kyuro Sasaki, Basic Research of Enhanced Coalbed Methane Recovery by Injecting Air, 6th World Conference on Applied Sciences, Engineering & Technology, 2017.08.
58. San Yee KHAING, Sugeng Sapto SURJONO, Jarot SETYOWIYOTO, Yuichi Sugai, Petrography, Mineralogy and Reservoir Characteristics of the Ngrayong Sandstone in the Rembang Area, Northeast Java (Indonesia), International Symposium on Earth Science and Technology 2016, 2016.12.
59. E. Owusu ANSAH, C.E. ABBEY, D. K. ADJEI, Yuichi Sugai, Contamination of Food by Iron from Grinding Disc Mills, International Symposium on Earth Science and Technology 2016, 2016.12.
60. サルマワティ, 菅井裕一, 佐々木 久郎, 表層土壌中のCO2ガス濃度勾配に基づく土壌CO2ガスフラックスの推定, 平成29年度資源・素材学会春季大会, 2017.03.
61. Minoru Saito, Yuichi Sugai, Kyuro Sasaki, Yoshifumi Okamoto, Chencan Ouyang, Experimental and Numerical Studies on EOR Using a Biosurfactant, The Abu Dhabi International Petroleum Exhibition & Conference 2016, 2016.11.
62. エバン ロシャディ オガラ, 菅井裕一, フェリアン アンガラ, 佐々木 久郎, 石炭へのCO2およびCH4の吸脱着の測定, 資源・素材2016（盛岡）, 2016.09.
63. Olaleken Alade, Kyuro Sasaki, Yuichi Sugai, Bayonile Ademodi, Prospects of Bitumen Emulsification using Polymeric Surfactant for Production and Transportation: Synergistic Effect of NaOH Combination, World Heavy Oil Congress 2016, 2016.09.
64. Yuichi Sugai, Challenges to Advance Microbial Enhanced Oil Recovery Technique to a Practical Technique, ASEAN MICROBIAL BIOTECHNOLOGY CONFERENCE 2016, 2016.08.
65. Arif Widiatmojo, Kyuro Sasaki, Yuichi Sugai, The Effect of Air Humidity to Coal Pile Spontaneous Combustion in Low Temperature, 5th World Conference on Applied Sciences, Engineering and Technology, 2016.06.
66. Kyuro Sasaki, Yuichi Sugai, Salmawati, Wataru Kawasaki, Development of Gas-Flux Monitor to Measure Soil CO2 Emission from Ground Surface into Atmosphere at CO2 Geological Storage, 5th World Conference on Applied Sciences, Engineering and Technology, 2016.06.
67. SALMAWATI, Kyuro Sasaki, Yuichi Sugai, Wataru KAWASAKI, Estimation of Subsurface Soil CO2 Efflux Based on Concentration Gradient Method at ITO Natural Analogue Test Field, International Symposium on Earth Science and Technology 2015, 2015.12.
68. Mohammad Reza Ghulami, Kyuro Sasaki, Yuichi Sugai, Ronald NGUELE, Enhanced Oil Recovery by Gas Injection; A Numerical Simulation Approach, International Symposium on Earth Science and Technology 2015, 2015.12.
69. Ibrahim Al Hadabi, Kyuro Sasaki, Yuichi Sugai, Effects of Kaolinite Clay on Omani Heavy-Oil Rheology in Considering Enhanced Oil Recovery by Steam Injection, 4th World Conference on Applied Sciences, Engineering & Technology, 2015.10.
70. Arif Widiatmojo, Kyuro Sasaki, Yuichi Sugai, Simulating the Migration of CO2 in Geological Carbon Storage: A Particle Tracking Approach, 4th World Conference on Applied Sciences, Engineering & Technology, 2015.10.
71. Ronald Nguele, Kyuro Sasaki, Yuichi Sugai, Hikamat S. Salim, Masanori Nakano, Experimental Analysis of Wettability Alteration by change of Salinity Modification for Heavy Crude Oil Reservoirs, 4th World Conference on Applied Sciences, Engineering & Technology, 2015.10.
72. Mohammad Reza Ghulami, Kyuro Sasaki, Yuichi Sugai, Ronald Nguele, Experimental study and numerical simulation of methane solubility in crude oil for gas injection enhanced oil recovery, 4th World Conference on Applied Sciences, Engineering & Technology, 2015.10.
73. O.S. Alade, Kyuro Sasaki, Yuichi Sugai, B. Ademodi, M. NAKANO, Prediction of Stability of Bitumen-in-Water Emulsion, 4th World Conference on Applied Sciences, Engineering & Technology, 2015.10.
74. Yuichi Sugai, Keita Komatsu, Kyuro Sasaki, Estimation of IFT Reduction by a Biomass Material and Potential of Its Utilization for EOR, SPE Asia Pacific Oil and Gas Conference and Exhibition, 2015.10, Surfactant injection is one of the most effective EOR techniques. Chemical surfactants however pose a few problems such as their high cost and low-degradability. We study on the utilization of biomass such as agricultural fertilizer mainly comprising the residue of squeezed beer yeast for EOR as an alternative of chemical surfactants because crude oil can be completely miscible with the fertilizer solution. The fertilizer can be stably supplied at a low cost because it is a waste of beer brewing industry and is only used for an animal feed additive so far. Its retail price is approximately 1 USD/kg in Japan.
We semi-quantitatively estimated the interfacial tension (IFT) between the fertilizer solution and crude oil by the oil displacement test. Concentration of the fertilizer was varied between 10 to 50 g/L. The fertilizer solution to which sodium chloride was added at a concentration of 10 to 40 g/L was hydrothermally treated at 60, 80, 100 or 120 ºC for 10, 20, 30, 45 or 60 minutes respectively before the tests. The fertilizer solution to which crude oil was added at a ratio of 1 % was also hydrothermally treated at 120 ºC for 20 minutes. Solution of surfactin which was a commercial biosurfactant was used as a standard of the IFT.
The IFT was reduced with the decrease in salinity and increase in concentration of the fertilizer and temperature of the hydrothermal treatment. Time of the hydrothermal treatment was preferably 30 minutes or less for the IFT reduction. The capability of 50 g/L of fertilizer solution to reduce the IFT was almost same as the capability of 0.2 g/L of the surfactin solution. Because the fertilizer solution comes into contact with residual oil under high temperature in oil reservoir, IFT between the solution and crude oil can be expected to be reduced in-situ.
Core flooding experiments were carried out by injecting the fertilizer solution after the water flooding as the primary oil recovery. 1.2 % of original oil in place was additionally recovered by injecting 50 g/L of the fertilizer solution after the water flooding.
The fertilizer should be biodegradable because it is a microbially-derived substance. In addition, because the IFT reduction was observed after the hydrothermal treatment of the fertilizer solution, the fertilizer should be effective even in the reservoir whose temperature is high such as 120 ºC at which chemical surfactants may be deactivated. From those results, the injection of the fertilizer solution can be a promising EOR which has both high cost performance, low environmental load and high versatility..
75. Ronald Nguele, Kyuro Sasaki, Yuichi Sugai, Masanori Nakano, Wettability Alteration in Berea Sandstone Cores by Contact Angle Measurements, The 21th Formation Evaluation Symposium of Japan, 2015.10.
76. Junpey Kumasaka, Kyuro Sasaki, Yuichi Sugai, Masanori Nakano, Numerical Modeling of Emulsion to Investigate the SAGD Oil Production based on Viscosity Measurements, The 21th Formation Evaluation Symposium of Japan, 2015.10.
77. Mohammad Reza Ghulami, Kyuro Sasaki, Yuichi Sugai, Numerical Simulation Study on Gas Miscibility of an Oil Field Located in Afghanistan, The 21th Formation Evaluation Symposium of Japan, 2015.10.
78. Arif Widiatmojo, Kyuro Sasaki, Amin Yousefi-Sahzabi, Yuichi Sugai, Particle Tracking Simulation for Tracer Dispersion in Porous Media: A Five-spot Laboratory Model, Application of Computers and Operations Research in the Mineral Industry (37th International Symposium), 2015.05.
79. Arif Widiatomojo, Kyuro Sasaki, Amin Yousefi-Sahzabi, Yuichi Sugai, Meshless particle tracking simulation for tracer dispersion in a quarter five-spot model, Asian Conference on Engineering and Natural Sciences, 2015.02.
80. Wataru KAWASAKI, Kyuro Sasaki, Yuichi Sugai, Development of a Method Measuring the Soil CO2 Flux for Monitoring of Stored CO2 Leakage from Subsurface-Reservoir, International Symposium on Earth Science and Technology 2014, 2014.12.
81. Sapto Aji PAMUNGKAS, Nuhindro Priagung WIDODO, Ginting Jalu KUSUMA, Darius Agung PRATA, Kyuro Sasaki, Yuichi Sugai, Arif WIDIATMOJO, Study of Spontaneous Combustion Characteristic Using Convectional Air Flow Testing Method at Laboratory on Ombilin Region’S Coal, International Symposium on Earth Science and Technology 2014, 2014.12.
82. SALMAWATI, Kyuro Sasaki, Yuichi Sugai, Nuhindro Priagung WIDODO, Preliminary Measurements of Natural Soil CO2 Concentration in Case of CO2 Leakage in CCS Site, International Symposium on Earth Science and Technology 2014, 2014.12.
83. Yuichi Sugai, Keita Komatsu, Kyuro Sasaki, Kristian Mogensen, Martin Vad Bennetzen, Microbial-Induced Oil Viscosity Reduction by Selective Degradation of Long-Chain Alkanes, Abu Dhabi International Petroleum Exhibition and Conference 2014, 2014.11, Application of a thermophilic anaerobic bacterium which degrades long-chain alkanes of crude oil preferentially and induces oil viscosity reduction to MEOR in our target oilfield was evaluated in this study. Although the salinity of formation-water in our target reservoir is approximately 10 % which is considerably higher than the optimum salinity for the bacterium, the bacterium can grow well and induce oil viscosity reduction in the formation-water which was diluted with sea-water whose salinity was approximately 4 % and contained yeast extract as a nitrogen source. Oil viscosity was reduced to 70 percent of its original viscosity after two-week incubation of the bacterium in the culture medium consisting of sea-water supplemented with 1.0 g/L of yeast extract.
The performance of MEOR using this bacterium was evaluated by numerical simulation using two dimensional oil-water two-phase flow model. This model consists of 6 compositions: degraded oil, undegraded oil, brine, bacterium, sodium chloride and yeast extract. Undegraded oil and yeast extract are carbon source and nitrogen source for the bacterial growth respectively. Growth rate of the bacterium is calculated by Monod equation depending on the variables of the concentration of yeast extract and sodium chloride. Conversion of undegraded oil into degraded oil is depended on the proliferation of the bacterium. Growth of the bacterium is stopped by deficiency of either yeast extract or undegraded oil. Oil viscosity is reduced as the percentage of degraded oil in oil phase increases. Residual oil saturation is improved by oil viscosity reduction and enhancement of oil recovery can be obtained.
According to the numerical experiments, growth of the bacterium and oil viscosity reduction were found only around the injection well because the bacterium consumed whole yeast extract around there. Recovery factor therefore can be increased by increase of injection volume of yeast extract. As a result, enhancement of oil recovery reached to 5 % by 1.0 pore volume injection of sea-water containing the bacterium and 1.0 g/L of yeast extract. 100 bbl of oil was recovered additionally by using 1.0 tons of yeast extract in that case..
84. OR Chanmoly, Kyuro Sasaki, Yuichi Sugai, Masanori Nakano, Motonao Imai, Numerical Simulation of CO2 Gas Microbubble of Foamy Oil, International Conference on Greenhouse Gas Technologies (GHGT-12), 2014.10.
85. Yuichi Sugai, Kyuro Sasaki, Arif Widiatmojo, Xiaoming Zhang, Integrated Numerical Simulation on Gas Diffusion in Mine Ventilation Network, 10th International Mine Ventilation Congress (IMVC2014), 2014.08.
86. Kyuro Sasaki, Yuichi Sugai, Shinji Ono, Gas-to-Wire System for Gas Production from Methane Hydrates Reserves, 21st World Petroleum Congress, 2014.06.
87. Yuichi Sugai, Yukihiro Owaki, Kyuro Sasaki, Fuminori Kaneko, Takuma Sakai, Numerical Prediction of Reservoir Souring Based on the Growth Kinetics of Sulfate-reducing Bacteria Indigenous to an Oilfield, SPE International Oilfield Corrosion Conference and Exhibition, 2014.05.
88. Arif Widiatmojo, 佐々木久郎, 菅井裕一, Particle Tracking Simulations for Dispersion of Solute in Laboratory Scale Porous Media, 平成26年度資源・素材学会春季大会, 2014.03.
89. Amin Yousefi Sahzabi, 佐々木久郎, 菅井裕一, CO2 Air Capture for Climate Change Mitigation: Current State and Technological Progress, 平成26年度資源・素材学会春季大会, 2014.03.
90. Kyuro Sasaki, Yuichi Sugai, Takafumi Yamakawa, Integrated Thermal Gas Production from Methane Hydrate Formation, SPE/EAGE European Unconventional Resources Conference and Exhibition, 2014.02.
91. Yongjun Wang, Kyuro Sasaki, Yuichi Sugai, Xiaoming Zhang, Measurement of Critical Self-Ignition Temperatures of Low Rank Coal, 14th Coal Operators’ Conference, 2014.02.
92. Kyuro Sasaki, Yongjun Wang, Yuichi Sugai, Xiaoming Zhang, Numerical Modelling of Low Rank Coal for Spontaneous Combustion, 14th Coal Operators’ Conference, 2014.02.
93. Takahiro Egami, Kyuro Sasaki, Yuichi Sugai, Development of Rotary Viscometer for Fluids under High Pressure - Measurements of Viscosity Change of Heavy Crude oil -, International Symposium on Earth Science and Technology 2013, 2013.12.
94. Yuji Yoshiki, Kyuro Sasaki, Yuichi Sugai, Separation of CO2 Gas from Mixed Gases of CH4 and CO2 in High Concentration, International Symposium on Earth Science and Technology 2013, 2013.12.
95. Hiroki Matsuda, Kyuro Sasaki, Yuichi Sugai, Evaluation of Land-Subsidence Behavior by Producing Water-Dissolved Gas, International Symposium on Earth Science and Technology 2013, 2013.12.
96. Ibrahim Al Hadabi, Kyuro Sasaki, Yuichi Sugai, EOR Development Screening of a Heterogeneous Heavy-Oil Field in Southern of Oman Using Steam Flooding, International Symposium on Earth Science and Technology 2013, 2013.12.
97. Ibrahim Suleiman AL-Hadabi, Kyuro Sasaki, Yuichi Sugai, EOR Development Screening of a Heterogeneous Heavy-Oil Field with Steam Injection, The 19th Formation Evaluation Symposium of Japan, 2013.09.
98. Kyuro Sasaki, Yuichi Sugai, Arif Widiatmojo, Hideo Naka, Tracer Gas Measurements of Effective Ventilation Airflow and Its Influence on Dust Concentrations in Underground Quarry, World Mining Congress 2013, 2013.08.
99. Kyuro Sasaki, Yuichi Sugai, Environmental Measurements of Air at Underground Space, International Symposium on Rock Mechanics and Mine Dynamic Disaster Prevention, 2013.07.
100. Teruhisa Yamashiro, Kyuro Sasaki, Yuichi Sugai, Very Susanto, A Study on Leakage Monitoring for CO2 geological storage, Kick-off Seminar on ASEAN-Japan Build-up Cooperative Education Program for Global Human Resource Development in Earth Resources Engineering, 2013.01.
101. Haruhiro Suzuki, Kyuro Sasaki, Yuichi Sugai, The Study of the Whole CCS System with Economic Evaluation, Kick-off Seminar on ASEAN-Japan Build-up Cooperative Education Program for Global Human Resource Development in Earth Resources Engineering, 2013.01.
102. Ferian Anggara, Kyuro Sasaki, Yuichi Sugai, Geo-sequestration of CO2 in the Coal Seams, with Special References to the Effects of Coal Swelling on the Permeability, 11th International Conference on Greenhouse Gas Control Technologies (GHGT-11), 2012.11.
103. Very Susanto, Kyuro Sasaki, Yuichi Sugai, Teruhisa Yamashiro, Mixing Gas Migration in Fractured Rock through Unsaturated and Water-saturated Layer; Result of a Pneumatic Gas Injection Test, 11th International Conference on Greenhouse Gas Control Technologies (GHGT-11), 2012.11.
104. Harunobu Suzuki, Kyuro Sasaki, Yuichi Sugai, Composing the Whole CCS System Including CO2 Buffer, 11th International Conference on Greenhouse Gas Control Technologies (GHGT-11), 2012.11.
105. Ryo Mori, Yuichi Sugai, Kyuro Sasaki, Kazuhiro Fujiwara, Takamichi Nakamura, Experimental and Numerical Studies on the Microbial Restoration of Natural Gas Deposits in Depleted Oil Reservoirs Storing CO2, SPE Asia Pacific Oil and Gas Conference and Exhibition, 2012.10.
106. Ferian Anggara, Kyuro Sasaki, Yuichi Sugai, Swelling experiments of Kushiro coals in supercritical CO2, The 18th Formation Evaluation Symposium of Japan, 2012.09.
107. OR Chanmoly, Kyuro Sasaki, Yuichi Sugai, Masanori Nakano, Motonao Imai, Characteristics of Micro-bubble Foamy Oil Generation and Distribution, The 18th Formation Evaluation Symposium of Japan, 2012.09.
108. Yuichi Sugai, Ryo Mori, Kyuro Sasaki, Kazuhiro Fujiwara, Estimation of the Potential of Microbial Restoration of Natural Gas Deposit with CO2 Sequestration, International Symposium on Earth Science and Technology 2012, 2012.09.
109. Harunobu Suzuki, Kyuro Sasaki, Yuichi Sugai, An Evaluation Study on CCS System against Geological Uncertainty and Troubles, International Symposium on Earth Science and Technology 2012, 2012.09.
110. Zhigang Li, Xiaoming Zhang, Yuichi Sugai, Jiren Wang, Kyuro Sasaki, Coal Gasification in High Pressure and High CO2 Concentration Atmosphere by Rapid Heating, International Symposium on Earth Science and Technology 2012, 2012.09.
111. Yuta Yoshioka, Kyuro Sasaki, Yuichi Sugai, A Kinetic Reaction Model for Bitumen Production from Oil Sands by In-Situ Combustion, International Symposium on Earth Science and Technology 2012, 2012.09.
112. OR Chanmoly, Kyuro Sasaki, Yuichi Sugai, Masanori Nakano, Motonao Imai, Characteristics of CO2 Gas Diffusivity and Solubility in the Crude Oil, International Symposium on Earth Science and Technology 2012, 2012.09.
113. Ferian Anggara, Kyuro Sasaki, Yuichi Sugai, Experimental and Analytical Studies on Permeability Reduction of Coal Seam by CO2 Injection, International Petroleum Technology Conference 2011, 2012.02.
114. Isty A. Purwasena, Yuichi Sugai and Kyuro Sasaki, Estimation of the Possibility of MEOR Using a Strain Belonging to the Genus Petrotoga by Investigating Its Habitations in Several Oilfields, International Symposium on Applied Microbiology and Molecular Biology in Oil Systems, 2011.06.
115. Keigo YOSHIMURA, Yuichi SUGAI, Kyuro SASAKI, Toshinori YUKITAKE, and Shigenori MUTA, Utilization of an Underground Tunnel for Low-Environmental-Load Cold Storage, International Symposium on Earth Science and Technology 2010, 2010.12.
116. Isty A. PURWASENA, Yuichi SUGAI, and Kyuro SASAKI, A Novel Anaerobic Hydrocarbon Degrading Bacteria and The Prospect for Microbial Enhanced Oil Recovery, International Symposium on Earth Science and Technology 2010, 2010.12.
117. Isty A. PURWASENA, Yuichi SUGAI, and Kyuro SASAKI, Isolation and Cultivation of a New Strain Petrotoga sp. for MEOR, 16th Energy Institute’s Reservoir Microbiology Forum, 2010.11.
118. Isty A. PURWASENA, Yuichi SUGAI, and Kyuro SASAKI, Estimation of the Potential of an Oil-Viscosity-Reducing Bacterium Petrotoga sp. Isolated from an Oil Field for MEOR, Society of Petroleum Engineers (SPE) Annual Technical Conference and Exhibition, 2010.09.
119. Isty A. Purwasena, Yuichi Sugai, and Kyuro Sasaki , Evaluation of Reservoir Condition Effects on the Reduction of Oil Viscosity by a Petrotoga strain　Isolated from an Oilfield for MEOR, 平成22年度石油技術協会春季講演会, 2010.06.
120. Isty A. PURWASENA, Yuichi SUGAI and Kyuro SASAKI, Estimation of the Potential of an Oil-Viscosity-Reducing Bacteria, Petrotoga sp., Isolated from an Oilfield for MEOR, International Petroleum Technology Conference (IPTC2009), 2009.12.
121. Isty A. PURWASENA, Yuichi SUGAI and Kyuro SASAKI, Estimation of the Potential of Microbial EOR by Using Oil-degrading Bacteria, Petrotoga sp. Isolated from an Oilfield, International Symposium on Earth Science and Technology 2009, 2009.12.
122. Toshiya NIIMI, Yuichi SUGAI, Kyuro SASAKI, Kazuhiro FUJIWARA, Yoshiyuki Hattori, Hiroshi Otagaki, Komei OKATSU, Basic Studies on Oil-Degrading and Hydrogen-Producing Microorganisms for Microbial Conversion of CO2 into CH4, International Symposium on Earth Science and Technology 2009, 2009.12.
123. Isty A. Purwasena, Yuichi Sugai and Kyuro Sasaki, Basic Studies on Microbial Enhanced Oil Recovery Using Crude Oil Viscosity Reducing Bacteria, Petrotoga sp., The 3rd International Symposium on Novel Carbon Resources Science: Advanced Materials, Processes amd Systems toward CO2 Mitigation, 2009.11.
124. The solubility of solvent gases for heavy oil with PVT test.
125. Evaluation of CO2 Injectivity around Injector in consideration of Swelling Effect of Coal Seam.
126. Basic studies on the Microbial Conversion of CO2 into CH4 in Depleted Oil Reservoir.
127. Screening of Autotrophic Microorganisms and Oil-degrading Microorganisms for Microbial EOR.
128. Isty A. Purwasena, Yuichi Sugai and Kyuro Sasaki, A Preliminary Study on Microbial Enhanced Oil Recovery using CO2 as a Nutrient Source, The 2nd International Symposium of Novel Carbon Resource Science, 2009.03.
129. Machiko OKA, Yuichi SUGAI, Kyuro SASAKI and Kazuhiro FUJIWARA, Investigation of Autotrophic Bacteria and Oil-Degrading Bacteria inhabit oil reservoir for MEOR without Injection of Organic Nutrients, International Symposium on Earth Science and Technology 2008, 2008.12.
130. Evaluation of Gas Production Rate from Methane Hydrate Layers by a System with Multiple Dual Horizontal Wells.
131. Screening of oil-degrading and hydrogen-producing microorganisms for microbial conversion of CO2 into CH4 in oil reservoir.
132. Numerical Temperature Prediction System in Injection Tubing, Bottomhole and Reservoir Condition for Supercritical CO2 injection into Deep Coal Seams.
133. Effects of SO2 on CO2 Adsorption Capasity in Coal Seams for ECBM Considering to Flue Gas from Coal-Fired Power Plant.
134. Thermal simulation of supercritical and liquid CO2 through injection well with considering convective heat transfer in annulus.
135. Measurement of solvent gas solubility into core samples including oil using PVT analysis equipment.
136. Effects of un-homogenuity on heavy oil production from oilsands using with SAGD.
137. Basic studies on Microbial EOR without injecting organic nutrient.
138. Screening of oil-degrading and hydrogen-producing microorganisms for microbial conversion of CO2 into CH4 in oil reservoir.
139. Development of a gas-water micro flow meter for measuring relative permeability.
140. Experiments on Gas Production System from Methane Hydrate Layer.
141. Screening of Effective Thermophilic Microorganisms for Microbial Enhanced Oil Recovery.
142. Thermal simulation of supercritical and liquid CO2 through injection well with considering convective heat transfer in annulus.
143. Screening of Oil-Degrading and Hydrogen-Producing Microorganisms for Microbial Conversion of CO2 into CH4 in Oil Reservoir.
144. Simulation Studies on the Mechanisms and Performances of MEOR using Polymer Producing Microorganism Clostridium sp. TU-15A.
145. Development of a Micro Flowmeter Measuring both Volumetric Flow Rates of Air-Water Mixture for Measuring Relative Permeabilities, Junichi YAMANOUE, Yuichi SUGAI and Kyuro SASAKI, Mining and Materials Processing Institute of Japan, March 2007.
146. Screening of bio-film producing microoganisms for prugging the waste water from mine,Machiko OKA, Yuichi SUGAI and Kyuro SASAKI, Mining and Materials Processing Institute of Japan, March 2007.
147. Screening of the thermophilic bacteria that is helpful to popularize Microbial Enhanced Oil Recovery, Yuichi SUGAI, Machiko OKA and Kyuro SASAKI, Japan Petroleum Institute, November 2006.
148. Estimation of the effect of the microbial material using Hinai-Green tuff as a microbial carrier, Yuichi SUGAI, Ryohei YAYA, Kyuro SASAKI, Shigeyuki TAKAHATA and Hideo NAKA, Mining and Materials Processing Institute of Japan, March 2006.
149. EFFECTS OF A GREEN TUFF ON ACTIVATING MICROORGANISMS, Yuichi SUGAI and Kyuro SASAKI, 3rd International Workshop on Earth Science and Technology, December 2005.
150. Measurement of enviromental parameters in a poultry farm applied Hinai-Green tuff, Yuichi SUGAI, Kyuro SASAKI, Shigeyuki TAKAHATA and Hideo NAKA, Mining and Materials Processing Institute of Japan, September 2006.
151. Screening of hydrocarbon degrading microorganisms for bio-remediation of oil contaminated environments, Kiyoka MORIMITSU, Yuichi SUGAI and Kyuro SASAKI, Mining and Materials Processing Institute of Japan, March 2005 .
152. Development of a bio-fartilizer made by an effective microorganism and Hinai-Green tuff, Yuichi SUGAI, Kyuro SASAKI, Shigeyuki TAKAHATA, Hideo NAKA and Fujio TANAKA, Mining and Materials Processing Institute of Japan, March 2006.
153. Introduction of Enhanced Oil Recovery Technique by using Microorganisms.
154. Characteristics of TOWADA stone and development of its utilization, Yuichi SUGAI, Kyuro SASAKI, Hideo NAKA and Fujio TANAKA, Mining and Materials Processing Institute of Japan, September 2004.
155. Development of the utilization of the rock dust of TOWADA-stone, Yuichi SUGAI and Kyuro SASAKI, The Resources Processing Society of Japan, June 2004.
156. Estimation of the ability of water-insoulble producing microorganism CJF-002 for the profile modification using network models., Yuichi SUGAI, Tetsuya YUMOTO, Atsushi KISHITA, Heiji ENOMOTO and Keiji NAGASE, Japanese Association for Petroleum Technology, May 2002.


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