Single-Well In-Situ Measurement of Residual Oil Saturation after an EOR Chemical Flood

Arora, Shyam; Horstmann, Dirk; Cherukupalli, Pradeep Kumar; Edwards, John E.; Ramamoorthy, Raghu; McDonald, Thomas Dale; Bradley, David; Ayán, Carlos; Zaggas, John; Cig, Koksal

doi:10.2118/129069-ms

Cited by 20 publications

(2 citation statements)

References 6 publications

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“…[5][6][7] In previous work, displacing phase injection was suspended to avoid fluid content change during lengthy MRI measurements. [8,9] However, the oil and water pore scale distribution may change when fluid injection is suspended. Very low flow rates may be employed, but very long experimental times result.…”

Section: Introductionmentioning

confidence: 99%

Monitoring oil displacement processes with k‐t accelerated spin echo SPI

Xiao

Romero‐Zerón

et al. 2015

Magnetic Reson in Chemistry

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Magnetic resonance imaging (MRI) is a robust tool to monitor oil displacement processes in porous media. Conventional MRI measurement times can be lengthy, which hinders monitoring time-dependent displacements. Knowledge of the oil and water microscopic distribution is important because their pore scale behavior reflects the oil trapping mechanisms. The oil and water pore scale distribution is reflected in the magnetic resonance T2 signal lifetime distribution. In this work, a pure phase-encoding MRI technique, spin echo SPI (SE-SPI), was employed to monitor oil displacement during water flooding and polymer flooding. A k-t acceleration method, with low-rank matrix completion, was employed to improve the temporal resolution of the SE-SPI MRI measurements. Comparison to conventional SE-SPI T2 mapping measurements revealed that the k-t accelerated measurement was more sensitive and provided higher-quality results. It was demonstrated that the k-t acceleration decreased the average measurement time from 66.7 to 20.3 min in this work. A perfluorinated oil, containing no (1) H, and H2 O brine were employed to distinguish oil and water phases in model flooding experiments. High-quality 1D water saturation profiles were acquired from the k-t accelerated SE-SPI measurements. Spatially and temporally resolved T2 distributions were extracted from the profile data. The shift in the (1) H T2 distribution of water in the pore space to longer lifetimes during water flooding and polymer flooding is consistent with increased water content in the pore space. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Monitoring oil displacement processes with k‐t accelerated spin echo SPI

Xiao

Romero‐Zerón

et al. 2015

Magnetic Reson in Chemistry

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“…Low-field NMR measurements can be used in the laboratory measurements to evaluate the EOR treatments for various types of conventional reservoirs (such as light and heavy oils) and unconventional reservoirs (such as shale oils) (Dong et al, 2020;Markovic et al 2020). The primary objective of NMR measurements is to screen different chemicals for the EOR applications, such as CO 2 , surfactant, and polymer flooding (Arora et al 2010;Mitchell et al 2012bSuekane et al 2009). Typically, the distribution of T 2 relaxation time is used to provide the saturation profile as a function of distance or along with the treated rock samples.…”

Section: Enhanced Oil Recovery Applicationsmentioning

confidence: 99%

A review on the applications of nuclear magnetic resonance (NMR) in the oil and gas industry: laboratory and field-scale measurements

Elsayed

Isah

Hiba

et al. 2022

J Petrol Explor Prod Technol

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This review presents the latest update, applications, techniques of the NMR tools in both laboratory and field scales in the oil and gas upstream industry. The applications of NMR in the laboratory scale were thoroughly reviewed and summarized such as porosity, pores size distribution, permeability, saturations, capillary pressure, and wettability. NMR is an emerging tool to evaluate the improved oil recovery techniques, and it was found to be better than the current techniques used for screening, evaluation, and assessment. For example, NMR can define the recovery of oil/gas from the different pore systems in the rocks compared to other macroscopic techniques that only assess the bulk recovery. This manuscript included different applications for the NMR in enhanced oil recovery research. Also, NMR can be used to evaluate the damage potential of drilling, completion, and production fluids laboratory and field scales. Currently, NMR is used to evaluate the emulsion droplet size and its behavior in the pore space in different applications such as enhanced oil recovery, drilling, completion, etc. NMR tools in the laboratory and field scales can be used to assess the unconventional gas resources and NMR showed a very good potential for exploration and production advancement in unconventional gas fields compared to other tools. Field applications of NMR during exploration and drilling such as logging while drilling, geosteering, etc., were reviewed as well. Finally, the future and potential research directions of NMR tools were introduced which include the application of multi-dimensional NMR and the enhancement of the signal-to-noise ratio of the collected data during the logging while drilling operations.

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