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Keywords: relaxation time
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Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 20–22, 2022
Paper Number: URTEC-3719323-MS
... mineral complex reservoir brine sciencedirect spectra interface relaxation time source rock spontaneous imbibition dissolution shale gas saturation profile natural gas science imbibe fracture public information URTeC: 3719323 NMR Measured Dissolution of Source Rock During Brine...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, June 20–22, 2022
Paper Number: URTEC-3723406-MS
... instruments. However, higher field instruments present several distinct advantages including faster scan times for a given signal to noise ratio (SNR), and superior detection of short relaxation elements due to their shift to longer relaxation times. For these reasons, higher field instruments have become...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 26–28, 2021
Paper Number: URTEC-2021-5500-MS
..., technically and financially. Inversion recovery-CPMG (IR-CPMG) NMR pulse sequence is used to simultaneously measure T 1 and T 2 relaxation times on rock core plugs, crushed core plugs to PDC bit size and PDC cuttings from similar depths. Data acquisition is done on a 20 MHz NMR spectrometer. The data...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-3346-MS
... recovery shale oil structural geology relaxation rate upstream oil & gas variation poro-fluid mode pore size distribution relaxation time nmr petrophysical pore multimodal porosity application saturation relaxation relaxation effect cluster association complex reservoir fluid dynamics...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-606-MS
... in the simultaneous acquisition and inversion of spin-lattice (T 1 ) and spin-spin (T 2 ) relaxation creates an intensity map of T 1 versus T 2 relaxation time distributions. Although the T 1 vs T 2 “map” provides an easy-to-understand visual tool for interpreting saturations and fluid-rock interactions in shale...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-99-MS
... salinity lowers HVFR’s viscosity, increases proppant settling velocity, and lessens the fluid’s proppant-carrying efficiency. Although in fresh water linear gel showed similar viscosity measurements with HVFR-A, the HVFR-A recorded a lower proppant settling rate because HVFR-A has a higher relaxation time...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-134-MS
... reservoir relaxation time rock sample source rock URTeC: 134 NMR signature and quantification of bitumen in unconventional source rocks Stacey Althaus*1, Jin-Hong Chen1, David Jacobi1, Joshua Brothers1, 1. Aramco Services Company: Aramco Research Center Houston. Copyright 2019, Unconventional...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-203-MS
...., 2016). Korb et al. (2014) presented the relationship between the relaxation times for water and oil as a function of frequency (Figure 6). It is apparent that the relaxation time increase for oil is significantly higher than the relaxation time increase for water with increasing frequency...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 22–24, 2019
Paper Number: URTEC-2019-394-MS
... sample relaxation time spaced cpmg sequence sequence core sample CPMG sequence Abstract Core analysis of shale via nuclear magnetic resonance (NMR) techniques presents a new set of challenges not existing in conventional cores. Specifically, the small pore sizes associated with shale leads...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 23–25, 2018
Paper Number: URTEC-2902130-MS
... values are routinely higher by one order of magnitude. The difference may be caused by data acquisition, data processing, enhanced fluid relaxation, magnetic field inhomogeneities, or some combination thereof. The project provides a proof-of-concept that T 2 relaxation times can be measured...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 23–25, 2018
Paper Number: URTEC-2873723-MS
... relaxation time sand transport capacity fracture shear rate Abstract The use of friction reducers (FRs) has increased rapidly, not only in traditional slickwater treatments, but also as a replacement for linear and even crosslinked guar based fluids for proppant transport at higher loadings...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 23–25, 2018
Paper Number: URTEC-2898355-MS
... complex reservoir Helium porosity Upstream Oil & Gas total porosity porosity SEM relaxation time porosimetry fraction characterization nitrogen adsorption NMR pore size distribution organic material picopore procedure saturation agreement URTeC: 2898355 Quantifying Nanoporosity...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 24–26, 2017
Paper Number: URTEC-2671166-MS
... presentation well logging viscosity bitumen user manual higher ratio relaxation time unconventional resource technology conference different temperature NMR porosity green imaging technology shale Evaluate Shale shale sample correlation map URTeC: 2671166 NMR at Different Temperatures...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 24–26, 2017
Paper Number: URTEC-2669857-MS
... sand to determine the effect of a variety of different components on the permeability. NMR logs previously have been used to obtain a continuous permeability profile along a wellbore; however, it has been found that each transform used to calculate permeability from the NMR relaxation time log...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 25–27, 2014
Paper Number: URTEC-1905272-MS
... on the distribution of T1/T2 ratios and the change in secular relaxation rate with echo spacing, we were able to differentiate organic porosity, inorganic porosity, and the relaxation signal from the organic material itself. The differentiation is based on theoretical consideration of relaxation times due...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 25–27, 2014
Paper Number: URTEC-1917686-MS
... carbon atom hydrocarbon bearing shale relaxation time Eagle Ford NMR chain length characterization URTeC: 1917686 Characterization of Free and Bound Fluids in Hydrocarbon Bearing Shales Using NMR and Py-GC-MS Jameson Gips*, Hugh Daigle, Mukul Sharma, University of Texas at Austin Copyright 2014...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 12–14, 2013
Paper Number: URTEC-1581494-MS
... allows for improved resolution of solid-phase protons. LF-NMR measurements of T1 and T2 relaxation time distributions were carried out on raw oil shale samples from the Eocene Green River Formation and pyrolyzed samples of these shales processed by hydrous pyrolysis and techniques meant to mimic surface...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 12–14, 2013
Paper Number: URTEC-1581601-MS
... distributions were determined and two dimensional T1-T2 correlation measurements were performed on the Woodford Shale cores. The T1-T2 correlations facilitate resolution of organic phases in the system. The changes observed in NMR-relaxation times correspond to bitumen and lighter hydrocarbon production...
Proceedings Papers

Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, August 12–14, 2013
Paper Number: URTEC-1582001-MS
.... Correlation models of relaxation time against saturation are provided. Water and gas are considered as displacement fluids for leak-off and clean-up, respectively. The saturation profiles of water leak-off for both capillary equilibrium and relaxation cases are compared, revealing a region of saturation...

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