Special Oil & Gas Reservoirs ›› 2023, Vol. 30 ›› Issue (1): 74-78.DOI: 10.3969/j.issn.1006-6535.2023.01.010

• Reservoir Engineering • Previous Articles     Next Articles

A New Method for Calculating the Theoretical Tectonic CO2 Storage Volume Based on Material Balance Equation

Cui Chuanzhi1, Li Anhui1, Wu Zhongwei1, Ma Siyuan1, Qiu Xiaohua2, Liu Min3   

  1. 1. China University of Petroleum (East China), Qingdao, Shandong 266580, China;
    2. China National Offshore Oil (China) Co., Ltd, Tianjin Company, Tianjin 300452, China;
    3. PetroChina Changqing Oilfield Company, Xi′an, Shaanxi 710000, China
  • Received:2022-03-29 Revised:2022-09-10 Online:2023-02-25 Published:2023-03-24

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Abstract: To further improve the evaluation accuracy of CO2 storage potential in saline layer, a new method for calculating the theoretical tectonic CO2 storage volume was proposed based on the material balance equation of CO2 tectonic storage process and the accurate calculation of underground volume of CO2 storage. As found in the results, the error of theoretical tectonic CO2 storage volume calculated by the new method was smaller than that of area method and volume method, which was only about 10%; the new method can predict the theoretical tectonic storage volume under both CO2 pressurized and pressure-retaining underground storage conditions; both theoretical tectonic CO2 storage volume and formation pressure showed a trend of increasing with the increase of injection time or injection-production ratio. The new method is of great significance to the study of CO2 tectonic storage and real-time dynamic control.

Key words: tectonic CO2 storage, saline formation, theoretical tectonic storage, material balance

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