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Author

Hyundon Shin

Bio: Hyundon Shin is an academic researcher from Inha University. The author has contributed to research in topics: Oil shale & Hydraulic fracturing. The author has an hindex of 8, co-authored 23 publications receiving 191 citations.

Papers
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Proceedings ArticleDOI
19 Oct 2009
TL;DR: In this article, the impact of various sizes and locations of shale barriers have been investigated through two-dimensional hypothetical simulation models, and the simulation results show that type-A has a greater impact than type-B on SAGD performance especially for the BIP case.
Abstract: The SAGD process has already been implemented for commercial production in Alberta Oil Sands areas in Western Canada since early 2000. SAGD performance is very sensitive to reservoir heterogeneities such as shale barriers, bottom and/or top water zones, and a gas cap. In the SAGD process, low permeability zones such as shale layers may act as a flow barrier depending on their size, vertical and horizontal locations, and continuity throughout the reservoir thus making it very important to understand and characterize the effect of shale layers. In this study, the impact of various sizes and locations of shale barriers have been investigated through two-dimensional hypothetical simulation models. The various simulation models have been designed to investigate the shale size and vertical location in both BIP (shale between the injector and producer) and AP (shale above the producer) cases. Two different types of models were designed to look at the effect of flow path existence between the injector and producer: type-A is designated as having a no flow path directly above the producer and type-B has a flow path directly above the producer. The simulation results show that type-A has a greater impact than type-B on SAGD performance especially for the BIP case. Small shale sizes of 3 and 5 m have a slight impact on performance; however, cases with 10 m shale have a greater impact due to the disruption of gravity drainge to the producer. Type-A BIP may require a longer pre-heating period for successful SAGD operation. Generally, shale barriers of 5 to 25 m are not critical for an AP case regardless of vertical location of shale barriers; however shale barriers greater than 50 m may act as a barrier and reduce the effective pay thickness of the reservoir depending upon the its vertical location.

54 citations

Journal ArticleDOI
TL;DR: In this paper, an ensemble Kalman filter (ES) with selective use of observation data in assimilation is proposed to improve history matching results and to keep simulation time short, which is much faster than EnKF, which uses recursive updates.
Abstract: Ensemble smoother (ES) assimilates all available dynamic data without iterations as global update. Therefore, ES is much faster than ensemble Kalman filter (EnKF), which uses recursive updates. Iterative concepts are introduced for ES to increase accuracy of history matching. However, they lose advantages of simulation time and cost over EnKF.We propose ES with selective use of observation data in assimilation to improve history matching results and to keep simulation time short. Three methods, EnKF with all data, ES with all data, and the proposed, are applied to 2D synthetic channelized reservoirs with a nine spot waterflooding. Ensemble-based methods interpret the reason of reduced oil production rate after water breakthrough as low permeability. In this research, we suggest selective measurement data to manage misinterpretable data for the ensemble-based methods. As a logical choice, oil production rate before water breakthrough and water cut after water breakthrough are used for assimilation.EnKF wit...

29 citations

Journal ArticleDOI
TL;DR: In this article, the authors proposed a framework for the development of an economic indicator for evaluating the economics of a shale gas project based on the reservoir parameters, hydraulic fracturing parameters, and various gas price scenarios.

29 citations

Journal ArticleDOI
Min Kim1, Hyundon Shin1
TL;DR: In this paper, a proxy model was developed to predict the size of the shale barrier in a steam assisted gravity drainage (SAGD) field without utilizing a 4D seismic data interpretation.

19 citations


Cited by
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Journal ArticleDOI
05 Dec 2005
TL;DR: This work presents the highest serial data rate for CMOS transceiver arrays and the lowest power consumption per data rate reported to date.
Abstract: This paper describes a quad optical transceiver for low-power high-density short-distance optical data communication. Each channel transmits 10 Gb/s over a multimode (MM) fiber and features a link margin of 5.2 dB at a bit error rate (BER) of 10/sup -12/. The transmit and receive amplifying circuits are implemented in an 80-nm digital CMOS process. Each driver consumes 2 mW from a 0.8-V supply, and each vertical cavity surface-emitting laser (VCSEL) requires 7 mA from a 2.4-V supply. The receiver excluding the output buffer consumes 6 mW from a 1.1-V supply per channel and achieves a transimpedance gain of 80.1 dB/spl Omega/. The isolation to the neighboring channels is >30dB including the bond wires and optical components. A detailed link budget analysis takes the relevant system impairments as losses and power penalties into account, derives the specifications for the electrical circuits, and accurately predicts the link performance. This work presents the highest serial data rate for CMOS transceiver arrays and the lowest power consumption per data rate reported to date.

132 citations

Journal ArticleDOI
TL;DR: A dual-path control scheme incorporated with a pair of the proposed smoothed varactors reduces the gain of voltage-controlled oscillator to less than 15 MHz/V, attenuates the spurious tones, and shortens the simulated settling time for a 5-GHz frequency synthesizer.
Abstract: A spur-reduction technique is presented to achieve low reference spurs for a 5-GHz frequency synthesizer. A dual-path control scheme incorporated with a pair of the proposed smoothed varactors reduces the gain of voltage-controlled oscillator to less than 15 MHz/V, attenuates the spurious tones, and shortens the simulated settling time by 56%. In, addition, a digital frequency-calibration circuit is used to enlarge the tuning range to overcome process variations. A 5-GHz frequency synthesizer has been fabricated for verification in a 0.18-mum CMOS process. It exhibits phase noise of -79 and -113 dBc/Hz at 10-kHz and 1-MHz offset, respectively. The reference spur level of -74 dBc is achieved by using a second-order loop filter. The overall tuning range is 16.3% and power consumption is 36 mW from a 1.8-V supply. The total switching time including digital frequency calibration takes no more than 110 mus

60 citations

Journal ArticleDOI
01 Nov 2016-Fuel
TL;DR: Based on the reservoir parameters in Mackay River oil sands, two sets of visual experimental equipment for quasi-three-dimensional SAGD physical simulation are developed in this paper, where the researches of steam chamber flow mechanism and steam conformance along the horizontal section are conducted.

57 citations

Journal ArticleDOI
TL;DR: A novel hybrid approach is presented in which a physics-based non-local modeling framework with data-driven clustering techniques to provide a fast and accurate multiscale modeling of compartmentalized reservoirs.

55 citations