Assessing EOR Potential from Partitioning Tracer Data

Huseby, Olaf; Hartvig, Sven; Jevanord, Kjersti; Dugstad, Øyvind

doi:10.2118/172808-ms

Cited by 16 publications

(10 citation statements)

References 24 publications

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“…The tracer swept pore volume is the pore volume contacted by the injected tracers calculated using three methods. First using the mean residence time, second using the first moment of the produced tracer curve, and lastly using the mean residence volume …”

Section: Resultsmentioning

confidence: 99%

“…Swept volume is calculated from the mean residence time of the tracer production history. The total swept volume is determined from tracer data as follows using Equation (11)

V_{s} = \frac{m}{M} q_{inj} t^{*}

…”

Section: Resultsmentioning

confidence: 99%

“…where t * the mean residence time, q inj is the injection rate, and m / M is the fraction of the tracer mass recovered at the exit point. The mean residence time ( t * ) is also calculated using Equation (12)

t^{*} = \frac{\int_{0}^{\infty} normalE ((), t) tdt}{\int_{0}^{\infty} normalE ((), t) dt}

…”

Section: Resultsmentioning

confidence: 99%

“…Due to chromatographic effect, the partitioning tracers reaches little late than conservative tracers at producing wellhead. This difference in arrival time of tracers at the producing well is used to estimate the remaining oil saturation . The average remaining oil saturation can be estimated using simple formula using Equation (2).…”

Section: Methodsmentioning

confidence: 99%

“…The difference in arrival times of tracer to the production well is used as parameter to determine the saturation between the injections and production well . The number of literature on the single well as well as interwell tracer is available, which focuses on the determination of residual oil saturation (Sor) using application of the injection of conservative and partitioning tracers together into subsurface …”

Section: Introductionmentioning

confidence: 99%

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Characterization of porous media by chemical tracers using time‐of‐flight and residence time distribution concept

Balikram

Sinha

Kumar

et al. 2019

Asia-Pacific J Chem Eng

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Chemical tracer proves itself an efficient and economic means for in‐depth and accurate reservoir characterization, where other known technology fails. In the present study, a new combination of conservative and partitioning tracer, that is, (VI) and 1‐Hexanol, was evaluated for their applicability in field. Laboratory investigation was carried out to characterize a porous medium in terms of heterogeneity, porosity, permeability, and residual oil saturation in addition to swept pore volume determination under enhanced recovery mechanism, with the help of volume balance as well as theoretical models. The tracers were first evaluated for their adsorption characteristics on sandstone at simulated temperature conditions, with more than 98% recovery. The investigation is based upon the tracer concentration measurement at the exit point as a function of time, and the response was used to infer reservoir parameters like swept pore volume, sweep efficiency, average residual oil saturation, and the Lorentz coefficient using method of moment, residence time distribution, and time‐of‐flight (TOF) concept. In the flow condition, interstitial velocity of conservative tracer was measured and used to calculate the TOF. Tortuosity and heterogeneity of the sand pack were determined from various theoretical correlations. The analytically evaluated heterogeneity values were found to match with the experimental data.

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Section: Resultsmentioning

confidence: 99%

“…Swept volume is calculated from the mean residence time of the tracer production history. The total swept volume is determined from tracer data as follows using Equation (11)