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Keywords: saturation
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Proceedings Papers

Paper presented at the SPWLA 29th Formation Evaluation Symposium of Japan, September 12–13, 2024
Paper Number: SPWLA-JFES-2024-M
... make it challenging to characterize the pore structures, porosity, and saturation in deep CBM reservoirs by traditional triple-combo logs. To have a better understanding of deep CBM reservoirs, 2D nuclear magnetic resonance (NMR) logs were performed to characterize the pore structure, porosity...
Proceedings Papers

Paper presented at the SPWLA 29th Formation Evaluation Symposium of Japan, September 12–13, 2024
Paper Number: SPWLA-JFES-2024-K
... in the matrix. The value of permeability for each type of fluid is related to the pore structure, wettability, and fluid saturation. If both of oil and water coexist in pores, oil and water have different effective permeability (Shi et al., 2020). So, they require separate estimation. And permeability...
Proceedings Papers

Paper presented at the SPWLA 29th Formation Evaluation Symposium of Japan, September 12–13, 2024
Paper Number: SPWLA-JFES-2024-H
.... It can calculate fluid pressure, saturation, and temperature, and compute those values in a pipe in single-phase and two-phase conditions as accurately as a commercial pipe flow simulator. Second, we constructed a two-dimensional formation simulator. It can predict the temperature drop near the pipe...
Proceedings Papers

Paper presented at the SPWLA 29th Formation Evaluation Symposium of Japan, September 12–13, 2024
Paper Number: SPWLA-JFES-2024-E
... calculated by Voigt s bound, Reuss s bound and Hill s average bound (GPa), respectively. The fluid moduli (Kf) is calculated in the 2nd step by Eq. 2: 1 = + (2) Where: Kf, Kw, and Kg are the bulk moduli of pore fluid, water and gas (GPa), respectively; Sw is water saturation (fraction). Rock physical...
Proceedings Papers

Paper presented at the SPWLA 28th Formation Evaluation Symposium of Japan, September 13–14, 2023
Paper Number: SPWLA-JFES-2023-T
... the petrophysical parameters namely lithology, porosity, permeability and water saturation. Two approaches were adopted in the AI workflow; one is using decision-tree based random forest and neural network technique while another approach is using variation auto encoder (VAE) AI technique to populate the mineralogy...
Proceedings Papers

Paper presented at the SPWLA 28th Formation Evaluation Symposium of Japan, September 13–14, 2023
Paper Number: SPWLA-JFES-2023-U
... Introduction This paper presents the methodology used to deliver a consistent set of rock types, with petrophysical outputs of porosity, water saturation, and permeability, using a class-based machine learning (CbML) method. This novel tool is designed for summarizing the unique...
Proceedings Papers

Paper presented at the SPWLA 27th Formation Evaluation Symposium of Japan, September 14–15, 2022
Paper Number: SPWLA-JFES-2022-D
..., and many methods had been proposed to evaluate pore structure by using NMR log. However, NMR log can only be used to characterize rock pore structure under fully water saturation due to the domination of surface relaxation. In hydrocarbon-bearing formation, pore structure would be over or underestimated...
Proceedings Papers

Paper presented at the SPWLA 27th Formation Evaluation Symposium of Japan, September 14–15, 2022
Paper Number: SPWLA-JFES-2022-I
...-water system reservoirs and the simulator predicting shale oil/gas reservoir performances were constructed individually. For conventional oil-water system reservoirs, the simulator employs an imbibition capillary pressure curve to estimate the residual oil saturation, which is automatically calculated...
Proceedings Papers

Paper presented at the SPWLA 27th Formation Evaluation Symposium of Japan, September 14–15, 2022
Paper Number: SPWLA-JFES-2022-H
... saturation decreases, resulting in the decrease in the permeability. (3) The grout material is injected with water from the production well prior to the depressurization or after dissociating some parts of MH. (4) The injected grout materials flow only in the water phase. (5) The injected grout materials...
Proceedings Papers

Paper presented at the SPWLA 25th Formation Evaluation Symposium of Japan, September 25–26, 2019
Paper Number: SPWLA-JFES-2019-H
...The 25th Formation Evaluation Symposium of Japan, September 25-26, 2019 -1- Well Log Analysis for Methane Hydrate Saturation Evaluation: High-Resolution and Rock Physics Yuki Maehara1, Daichi Sato2, Akira Fujimoto2 and Koji Yamamoto2 1. Schlumberger K. K. 2. Japan Oil, Gas and Metals National...
Proceedings Papers

Paper presented at the SPWLA 25th Formation Evaluation Symposium of Japan, September 25–26, 2019
Paper Number: SPWLA-JFES-2019-G
... 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...
Proceedings Papers

Paper presented at the SPWLA 25th Formation Evaluation Symposium of Japan, September 25–26, 2019
Paper Number: SPWLA-JFES-2019-S
... analysis service provider dx tool saturation clastic reservoir identification 25th formation evaluation symposium Malaysia fluid identification reservoir envelope interpretation Japan The 25th Formation Evaluation Symposium of Japan, September 25-26, 2019 -1- NEW GENERATION OF PULSE NEUTRON...
Proceedings Papers

Paper presented at the SPWLA 24th Formation Evaluation Symposium of Japan, October 11–12, 2018
Paper Number: SPWLA-JFES-2018-H
... stage due to formation laminations, various viscous fluid distribution, high connate water saturation and two-phase flow from the initial state of reservoir. To understand the key parameters that impact the later reservoir performance, the production forecasting analysis is needed from different...
Proceedings Papers

Paper presented at the SPWLA 24th Formation Evaluation Symposium of Japan, October 11–12, 2018
Paper Number: SPWLA-JFES-2018-O
... substitution to fully evaluate and characterize LRLC formations by 1) quantifying accurate sand fraction, porosity, permeability and water saturation using a modified laminated sand analysis with NMR factor analysis, 2) analyzing fluid facies from NMR factor analysis to separate shale, block pay sand...
Proceedings Papers

Paper presented at the SPWLA 23rd Formation Evaluation Symposium of Japan, October 11–12, 2017
Paper Number: SPWLA-JFES-2017-D
... temperatures were changed. In these calculations about the methane hydrate reservoir, the initial saturation of methane hydrate is 20 % on the assumption that this process as the secondary recovery follows the depressurization. The results show that injecting acid whose concentration is 0.50 mol/L heats...
Proceedings Papers

Paper presented at the SPWLA 23rd Formation Evaluation Symposium of Japan, October 11–12, 2017
Paper Number: SPWLA-JFES-2017-L
... Abstract Wettability becomes a crucial parameter in understanding the reservoir rock behavior due to its effect on characterizing the distribution of fluid saturation, estimation of primary oil recovery, and certainly to determine the IOR/EOR application plans. However, many practitioners...
Proceedings Papers

Paper presented at the SPWLA 23rd Formation Evaluation Symposium of Japan, October 11–12, 2017
Paper Number: SPWLA-JFES-2017-R
... heterogeneity and applying sand counting analysis for better gas hydrate saturation estimation in heterogeneous strata. Moreover, gas hydrate occurrence mode identified by resistivity image corresponds well with cores collected from hydrate bearing zone. Resistivity image is also used to analyze hydrate...
Proceedings Papers

Paper presented at the SPWLA 23rd Formation Evaluation Symposium of Japan, October 11–12, 2017
Paper Number: SPWLA-JFES-2017-S
... was converted into a gas hydrate and free gas saturation model using Archie's equations and rock physics models. The results indicated that saturation of gas hydrates and free gases ranges from 0 to 50% and 0–20% in the pore space, respectively. In addition, based on the velocity model of gas hydrates and free...

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