Ying Wang

Harbin Institute of Technology

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Lili Bai

Harbin Engineering University

Penghua Qiu

Harbin Institute of Technology

Zhenzhong Li

University of Nottingham Ningbo China

Siqi Li

Northeast Petroleum University

Chunyang Liu

Liaoning University

Wenfeng Sun

Shanghai Technical Institute of Electronics & Information

Wei Li

Nanjing Medical University

Shaohua Wu

Harbin Institute of Technology

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Northeast Petroleum University

Shanghai Technical Institute of Electronics & Information

Harbin Institute of Technology

Chinese Academy of Sciences

Daqing Oilfield General Hospital

Harbin Engineering University

Fifth Tianjin Central Hospital

Inner Mongolia Medical University

Taiyuan University of Technology

Wenzhou Central Hospital

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A practical method to construct capillary pressure curves of reservoir using NMR logging date

International Journal of Oil Gas and Coal Technology (2019)

Wenfeng Sun Chunyang Liu Ying Wang Lili Bai Wei Li

A new method to construct the pseudo-capillary pressure curve using nuclear magnetic resonance (NMR) logging data is established. In this method, the displacement pressure can be predicted using the maximum relaxation time of T2 spectrum of nuclear magnetic resonance (NMR) logging. Next, the effective porosity and density of rock, calculated from logging data, are used to predict the maximum mercury saturation. Then the mercury saturation at displacement pressure point and threshold pressure point can be estimated according to empirical data. Thus, the four important points on the capillary pressure curve can be obtained, namely zero point, displacement pressure, threshold pressure and end point. Then, referring to the 4 pressure points above, the pseudo-capillary pressure curve is constructed in two sections with the dividing point of threshold pressure. The method is convenient especially for the evaluation of deep and complex formations where the coring is difficult. [Received: July 12, 2017; Accepted: December 15, 2017]

Capillary pressure

Coring

Saturation (graph theory)

10.1504/ijogct.2019.103507

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Citations (2)

Performance of an Integrated Gasification Combined Cycle System with Different System Integration Options

Energy & Fuels (2010)

Ying Wang Penghua Qiu Shaohua Wu Zhenzhong Li

The integrated gasification combined cycle system includes a gasifier, air separation unit (ASU), heat recovery steam generator (HRSG), syngas coolers, and combined cycle system. The HRSG, syngas coolers, ASU, and gas turbine can affect the system efficiency, and their integration is of importance. This work investigates the integration of the HRSG and syngas coolers and the integration of the gas turbine and the ASU. First, it is found that the best match between the HRSG and syngas coolers is for the HRSG to provide high-pressure water to the syngas coolers, which return superheated steam back to the HRSG. Second, from the viewpoint of system efficiency, it is found that a lower integration air separation coefficient (Xas) or higher nitrogen re-injection coefficient (Xgn) is acceptable for an integrated gasification combined cycle system with a low-pressure ASU. A lower Xas is recommended for Xgn = 0%, and Xas = 50% is acceptable for Xgn = 100%. For Xas = 0%, Xgn = 30% is recommended, and a higher Xgn is recommended for Xas = 100%.

Wood gas generator

10.1021/ef901235p

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Citations (12)