China University of Petroleum

Weiming Cheng

Hao Chen

Wen Liu

Feng Luo

Xinyu Qi

Linxi Yang

Baoxi Yang

Mingsheng Zuo

Xiliang Liu

Borui Li

Pengbo Li

Ruwei Zhang

Zhizhen Lin

Yang Li

Lijun Zhang

Qing Chang

Haipeng Liu

Xiaofeng Tian

Xianhong Tan

Renfeng Yang

Qiuting Li

A minimum miscible pressure prediction method for a CO-crude oil system considering reservoir well spacing is provided, including: obtaining characteristic parameters of each component of crude oil; based on the characteristic parameters of each component of the crude oil, obtaining corresponding bubble point or dew point pressures, as well as corresponding oil-gas interfacial tension, oil phase and gas phase densities, and viscosities under different injected gas contents; based on the corresponding bubble point or dew point pressures, as well as the corresponding oil-gas interfacial tension, oil phase and gas phase densities, and viscosities under different injected gas contents, constructing a minimum miscible pressure prediction model for the CO-crude oil system considering the reservoir well spacing; and based on the minimum miscible pressure prediction model for the CO-crude oil system considering the reservoir well spacing, obtaining minimum miscible pressure values for the CO-crude oil system under different reservoir well spacing.

Minimum miscible pressure prediction method for CO-crude oil system considering reservoir well spacing

A method and a system for optimization of development by carbon dioxide injection based on incomplete miscibility characteristics are provided, where the method includes following steps: building a three-dimensional reservoir model based on laboratory experiments and reservoir values, where the three-dimensional reservoir model includes: a fluid model and a reservoir model; based on the three-dimensional reservoir model, obtaining incomplete miscibility characteristics of reservoir development by carbon dioxide injection; and completing whole life cycle optimization development of carbon dioxide injection based on the incomplete miscibility characteristics.

Method and system for optimization of development by carbon dioxide injection based on incomplete miscibility characteristics

The present disclosure discloses a combined apparatus for experimentation on different storage modes of carbon dioxide, which comprises a displacement device, a storage reaction device and a measuring device, wherein the displacement device comprises a displacement pump, and an intermediate oil-water container and an intermediate carbon dioxide container that are arranged in parallel, the displacement pump is connected to a first end of the parallel connection of the intermediate oil-water container and the intermediate carbon dioxide container, and an inlet end of the storage reaction device is connected to a second end of the parallel connection of the intermediate oil-water container and the intermediate carbon dioxide container; the measuring device comprises a weigher, a first pressure detector, a gas-liquid separator, a gas meter and a mineral analyzer, wherein the first pressure detector is arranged in the intermediate oil-water container, and the gas-liquid separator is connected to the outlet end of the storage reaction device. Thus, the storage amount of carbon dioxide in different storage modes can be evaluated by means of a single apparatus. Compared with the prior art in which different storage experiments are performed separately.

Combined apparatus for experimentation on different storage modes of carbon dioxide and method thereof

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Beijing, China

Weiming Cheng