... Abstract Developing deep coalbed methane (CBM) reservoirs is becoming a key direction for different operators after the production breakthrough in the Ordos Basin in China. The deep CBM reservoirs have more complex and heterogeneous properties and intrinsic mechanisms than other unconventional...

...The 28th Formation Evaluation Symposium of Japan, September 13-14, 2023 ARTIFICIAL INTELLIGENT (AI) ASSISTED FORMATION EVALUATION AND RESERVOIR MONITORING IN A CO2 PRODUCING FIELD: CASE STUDIES FROM OFFSHORE PENINSULAR MALAYSIA Siti Najmi Farhan Zulkipli 1 1. PETRONAS Carigali Sdn. Bhd. Copyright...

... Abstract Fluid identification is one of the greatest challenges in Sichuan Basin, China. The tight carbonate reservoirs have very strong heterogeneity in mineralogy and pore structure without a unified free water level, resulting in the frequent failure of water saturation calculation...

...The 28th Formation Evaluation Symposium of Japan, September 13-14, 2023 NEW APPLICATION TERRITORY OF ULTRA-DEEP AZIMUTHAL RESISTIVITY TECHNOLOGY IN PUSHING A STRATEGIC REDEVELOPMENT OF DEEPWATER RESERVOIR BY AVOIDING UNCERTAIN ENGINEERING AND RESERVOIR RISKS Yongming Gao 1, Lipeng He 1, Botao Chang...

... that the quantitative evaluation of vugs and fractures is the key point to a good karst dolomite reservoir. However, due to the limited resolution of conventional logs and strong heterogeneity of carbonate reservoir, conventional open hole logs and seismic data have limitation to provide the details of secondary pore...

... Abstract Pore structure evaluation was of great importance in improving reservoirs characterization and validity prediction, especially in unconventional reservoirs. The nuclear magnetic resonance (NMR) log was considered to be advantageous in formation pore structure characterization...

... Abstract Surface water invasion reservoir was defined as such type of reservoir that connected to surface due to tectonism (e.g., denude, discordance) or fractures. Surface fresh water with ultra-low concentration was invaded into formation pore spaces, and this led to the coexistence of high...

... Abstract Tight sandstone reservoir characterization and validity evaluation faced great challenge due to the complicated pore structure and strong heterogeneity. Generally, the nuclear magnetic resonance (NMR) logging was used to characterize pore structure to improve tight sandstone...

...The 25th Formation Evaluation Symposium of Japan, September 25-26, 2019 -1- WELL LOG ANALYSIS FOR SURVEYING OPTIMUM CCS RESERVOIR LOCATION A CASE STUDY Kunio Akihisa1., Shingo Tokuyasu2., Kohei Takayama2., Kohei Yamaguchi3. 1. Oil Research, Limited 2. NC Geophysical Survey Company Limited 3...

...The 25th Formation Evaluation Symposium of Japan, September 25-26, 2019 -1- THE INVESTIGATION OF SONIC LOG RESPONSE IN GAS DISSOLVED IN WATER RESERVOIR CASE STUDY OF NAKAJO Takuya Mizukami1, Tetsuo Fukano1, Takeo Aoyama1 and Yuki Maehara 2 1. JX Nippon Oil & Gas Exploration Corporation (JX Nippon...

...The 25th Formation Evaluation Symposium of Japan, September 25-26, 2019 -1- APPLICABILITY OF LOW-SALINITY EOR TO AN OFFSHORE CLASTIC RESERVOIR IN VIETNAM THROUGH EXPERIMENTS AND SIMULATION Ryoichi Morishita 1, Ryusuke Matsuyama 1, Masazumi Takayanagi 1, Satoru Takahashi 1, Din Duc Huy 2, Pham...

... sections in the Marrat reservoir of the Jurassic formations have traditionally required several wireline logging and hole conditioning runs for comprehensive petrophysical interpretation and completion design. As the planned well inclinations increase to maximize reservoir exposure and sweep efficiency, WL...

... and exploiting of these targets present technical and operational challenges. Not only the horizontal well needs to be optimally placed within complex target zone, the lateral also needs to be placed close to the reservoir top to keep it away from the unknown current fluid contact. Real-time evaluation...

...The 25th Formation Evaluation Symposium of Japan, September 25-26, 2019 -1- APPLICATION OF FPWD TO THE RESERVOIR DESCRIPTION AND COMPLETION OPTIMIZATION IN HIGHLY DEVIATED WELLS IN SOUTH CHINA SEA Sheng Lin HE1, Lei ZHANG2, Shim Yen Han2, Sai Jun DING2, Xiao Jie GUO2 1. CNOOC Zhanjiang 2...

... scenarios to identify gas or CO 2 in reservoirs and determine the gas saturation with case studies (Iglesias et al., 2016; Rose et al., 2017). Simulated log response in a forward formation model of shale and sand, that shows FNXS is sensitive to gas-filled porosity variation, but insensitive to liquid...

... permeability has been overlooked; the result therefore can lead to the big error for production prediction in the early stage of life cycle, especially in complex reservoir system, such as heterogeneity and low permeability formations etc., consequently impact the decision-making process of completion schemes...

... ABSTRACT Running Pulse Neutron logs in Malaysia has previously been plagued by high uncertainties, especially in brown fields with complex multi stacked clastic reservoirs. Together with a wide range of porosities and permeabilities, the acquired logs quite often than not, tend to yield...

... ABSTRACT With the fast pace of technology utilization, South China Sea has been having continuous exploration success, especially in shallow heavy oil reservoir with low resistivity contrast. The big uncertainty in this type of reservoir in this area is the well performance in the development...

... ABSTRACT As a result of a new exploration strategy focused on deep rather than shallow formations, the largest gas condensate reservoir has been discovered recently in Bohai Bay, China. Due to the complex fluid behaviour, appropriate characterization of the in-situ fluids and relevant flow...

... ABSTRACT Reservoir heterogeneity is the key factor which impact production, the water flooding efficiency and ultimate hydrocarbon recovery during the reservoir development. Reliable productivity evaluation from early stage is needed to understand reservoir characteristics and minimize...