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1-20 of 402
Keywords: porosity
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Proceedings Papers
Modernizing Petrophysical Interpretation in Unconventional Reservoirs by Integrating Advanced Well Logs and Core Analysis in High-Definition Wells
Available to PurchaseHaijing Wang, Luisa Crousse, Sergio Cuervo, Ronald Brown, Andrew Tipton, Tim Fischer, Michael Cheshire, Mason Edwards, Aygul Kostinovsky, Ezequiel Lombardo, Esteban Rives, Ricardo Freitas, Ali Wushur
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4216697-MS
... against lab measurements on core or cuttings whenever available. NMR porosity is used as an independent validation for total porosity, and NMR clay-bound water is used to calibrate cation exchange capacity (CEC) for clays. Water-filled porosity from dielectric logs is used to calibrate water saturation...
Proceedings Papers
Integrated Quantification of Immobile and Producible Fluids from Nuclear Magnetic Resonance (NMR) T 1 - T 2 Log and Multi-Physics Core Measurements
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4238358-MS
... production often show a quite different water cut than the total water saturation from traditional static formation evaluation. To quantify fluid porosities of immobile and producible hydrocarbon and water, we have developed a novel interpretation workflow integrating NMR T 1 - T 2 log and multi-physics...
Proceedings Papers
Revolutionizing Tight Oil Reservoir Exploration: Integrating 3D Sonic Imaging, Borehole Image, NMR, and Gamma-Ray Spectroscopy Measurements for Precise Pay Zone Discovery
Available to PurchaseZiyue Cui, Ge, Wu, DaiGuo Yu, Gang Wang, Jinlong Wu, Changwei Qu, Dongdong Cheng, HuaYang Li, Yanyan Chen
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4242322-MS
... mineral compositions and total organic carbon content for hydrocarbon saturation. NMR factor analysis determined the T2 cutoff for free fluid porosity. Combining free fluid porosity with hydrocarbon volume data from total organic carbon and resistivity measurements accurately characterize the fluid type...
Proceedings Papers
Stimulation of Tight Sandstones with High-Power Ultrasound Tools in Yard-Scale Tests
Available to PurchaseMurtadha J. AlTammar, Rima T. Alfaraj, Jesus Mierez, Khalid M. Alruwaili, Gbenga Oluyemi, Chao Liu, Aijaz A. Shaikh, Abdullah A. Alomair
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4243699-MS
... treatment sem image container drilling fluids and materials reservoir characterization sem image porosity testing condition high-power ultrasound tool URTeC 4243699 Stimulation of Tight Sandstones with High-Power Ultrasound Tools in Yard-Scale Tests Murtadha J. AlTammar*1, Rima T. Alfaraj1, Jesus...
Proceedings Papers
Geomechanical and Sealing Performance of Depleted Reservoirs for CO 2 Sequestration: Insights from Experiments and Modeling in the Nanbao Depression, China
Available to PurchaseNing Li, Jizhou Tang, Junfeng Shi, Huojian Zhang, Mengke An, Wei Cheng, Zi Wang, Famu Huang, Huifen Han, Yucheng Jia
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4246515-MS
... for porosity, permeability, mineralogy, and mechanical properties using NMR, XRD, and triaxial compression testing. A 3D reservoir-scale numerical model quantifies stress evolution and CO 2 migration over a 36-year simulation period. Results demonstrate significant pore structure alteration after CO 2 soak...
Proceedings Papers
Developing Effective Permeability Correlations for Carbonate Shales in Mexico, Tampico Basin
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4251689-MS
... Abstract Understanding effective permeability in carbonate shales tends to be difficult to predict as the shale presents heterogeneous mineralogy, poorly nano- and micro-pores system, carbonate secondary porosity as dissolution may be also present. Understand fluid types in this reservoir...
Proceedings Papers
Forgotten Oils and Extreme Legacy Core; Integrating Modern Geochemical Technologies to Define Fluid Loss and Risk Unpreserved Core for Production Allocation
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4258507-MS
... characterization reduction log analysis storage condition saturation integrating modern geochemical technology austin chalk correlation coefficient air-filled porosity storage allocation sample depth unpreserved sample complex reservoir well logging geological subdiscipline porosity dst fluid...
Proceedings Papers
Rock Compressibility for CO 2 Injection: Increasing Storage Capacity and Injectivity
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4261156-MS
... Abstract Storage capacity and injectivity in CCS projects depend on physical properties like porosity and permeability within injection zones, the overall volume of the zone, and whether the system allows fluid flow. In stress-sensitive reservoir rocks, increasing reservoir pressure...
Proceedings Papers
Reservoir Characterization Derived from Advanced Logging Techniques in Vertical and Horizontal Wells of Lacustrine Shale Oil Reservoir in China
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4262166-MS
... reservoirs, as kerogen-rich source rocks do not always correlate with favorable reservoir properties. The Jurassic lacustrine shale oil reservoirs are characterized by complex mineralogy, low-to-medium kerogen abundance, low porosity, and diverse fracture networks. Consequently, advanced reservoir...
Proceedings Papers
Phase Decomposition for Predicting Carbonate Reservoir Properties
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4262417-MS
... Abstract Phase decomposition isolates seismic facies that are obscured by interference from adjacent reflections. For thin layers with a zero-phase wavelet, the -90° phase highlights low-impedance facies, which can be correlated to high porosity. Below seismic resolution, sparse layer...
Proceedings Papers
Innovative Approach for Estimating Organic and Inorganic Porosity in Organic Shale Reservoirs: A Case Study in the Vaca Muerta Formation
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4263994-MS
... Abstract Shale reservoirs with high total organic carbon have complex porosity systems hosted within both inorganic matrix and organic matters. It has been presumed that the porosity distribution among inorganic and organic pores has a direct impact on well productivity. The objective...
Proceedings Papers
Alterations of Madison Carbonate Rocks Under Supercritical CO 2 -Brine Interaction: Implications for Long-Term Storage Integrity
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4266530-MS
...-exposure analyses included measurements of Young's modulus and Poisson's ratio using the NER Autolab 1500 system. Mineralogical alterations were characterized using X-ray diffraction (XRD), while microstructural changes were examined using scanning electron microscopy (SEM). Porosity and pore structure...
Proceedings Papers
Improved Regional Characterization of Bakken-Three Forks Reservoir Integrating Special Core Analysis, Advanced Logs, and Production Using Petrophysics and Geologic Framework
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 9–11, 2025
Paper Number: URTEC-4265255-MS
... Abstract Developing a consistent characterization model for unconventional reservoirs is challenging due to the rarity of core-measured true effective porosity, saturation, and relative and absolute permeability data. This challenge intensifies for basin-wide application, as advanced data...
Proceedings Papers
Mapping Oil-Prone Facies in 3D for Field Development and Optimizing Production: A Midland Basin Case Study
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4020437-MS
... in 1D (wells), which is a function of porosity (PHIT), total organic content (TOC), oil saturation (S O ) and volume of clay (v cl ). The resultant calibration is applied to the seismic volume using inputs from deterministic inversion to predict most probable oil-prone facies. Generally, areas with high...
Proceedings Papers
Machine Learning-Based Sweet Spot Prediction Method for Canada Tight Sandstone Gas Reservoir
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4025206-MS
... Abstract A prediction method for the EUR (Estimated Ultimate Recovery) of tight sandstone gas reservoirs based on a composite machine learning approach was proposed and applied in the M tight sandstone reservoir in Canada. This method extrapolated geological parameters such as porosity...
Proceedings Papers
Unlocking Gas Potential in Deep Shale by Advanced Pulsed Neutron Logging Behind the Casing: Case Study in Sichuan Basin, China
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Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4030968-MS
...: (1) Neutron porosity, which can be used to calculate formation porosity together with compressional slowness from DSL. (2) Capture and inelastic elemental spectroscopy, which were utilized to obtain accurate mineralogy and in-situ total organic carbon in shale. (3) Thermal neutron capture cross...
Proceedings Papers
Negative Production Factor Recognition and Separation from Other Pore Fluids with Advanced Logging Techniques: A Case Study from Junggar Basin
Available to PurchaseZengbao Zhang, Xianbo Meng, Jianbo Lv, Pengpeng Yang, Liang Cai, Liu Zhong Li, Jin Long Wu, Xianran Zhao
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4030849-MS
..., and NMR were logged in the target formation. With the matrix density derived from spectroscopy measurements, the porosity calculated has a difference compared with the NMR porosity, which confirms the existence of the bitumen in the reservoir. Bitumen and oil volume were evaluated based on the method...
Proceedings Papers
NMR Interpretations in Unconventional Reservoirs - Application to Quality Control and Guide for Log Calculated Total Water Saturations in the Texas Delaware Basin
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4015915-MS
... of kerogen and low-porosity rock could increase formation resistivity. Such elevated formation resistivity can result in a lower Archie water saturation, particularly in less favorable reservoir facies. On the contrary, observed formation resistivity is typically very low in the clean, high-porosity, high...
Proceedings Papers
Small Pores Have a Big Impact on Enhanced Recovery from Tight Oil Reservoirs
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4038756-MS
... equation of state geologist reservoir simulation shale oil flow in porous media urtec nanoscale pore hydraulic fracture petroleum geology economic geology porosity unconventional resource technology conference saturation enhanced recovery injection conference grid geological subdiscipline...
Proceedings Papers
Evaluation of Hydrogen Interaction with Mudrocks: Implication for Geo-Storage
Available to Purchase
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 17–19, 2024
Paper Number: URTEC-4042532-MS
... relaxivity. H 2 was found to occupy all pore volumes of the sample irrespective of the pore size, as the calculated H 2 porosity matches very closely with the total helium porosity. Minimal hysteresis was observed for this zone as H 2 can be produced readily after injection. The second zone above 50 ms...
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