... 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...

... 4 m 3 /day in vug and fracture section. It suggests 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...

... Abstract In Southern Offshore China, a deepwater sandstone reservoir with the strong bottom water drive has been intensively produced for 12 years which was followed by a 10-year’s abandonment. A redevelopment campaign designs new horizontal wells at the upper section to be away from both...

... casing opportunities. In a nutshell, automated or AI assisted formation evaluation could be a powerful tool for reservoir properties prediction particularly in those areas with limited data available. Leveraging on this capability will unlock the reserves potential in deeper reservoir targets and also...

... 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...

... 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...

...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...

... ABSTRACT Directional wells through the 6-in. production hole 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...

... 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...

...The 23rd Formation Evaluation Symposium of Japan, October 11-12, 2017 -1- THE EFFECT OF REACTION HEAT BY ACID INJECTION FOR ENHANCED GAS RECOVERY FROM METHANE HYDRATE RESERVOIR Fuyuki Kaneko 1 , Kengo Nakamura 1 , Yasuhide Sakamoto 2 , Noriaki Watanabe 1 and Takeshi Komai 1 1. Tohoku University 2...