Summary

Application and Prospect of Acid Fracturing Technology with Microencapsulated Solid Acid

  • Yang Zhaozhong ,
  • Peng Qingdong ,
  • Wang Zhenpu ,
  • Li Xiaogang ,
  • Zhu Jingyi ,
  • Qin Yang
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  • 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    2. PetroChina Bohai Drilling Engineering Co., Ltd., Langfang, Hebei 605007, China;
    3. Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    4. PetroChina Changqing Oilfield Company, Xi'an, Shaanxi 710018, China

Received date: 2022-06-15

  Revised date: 2023-03-20

  Online published: 2023-07-13

Abstract

The conventional acid fracturing working fluid system has problems such as too fast acid-rock reaction and short effective distance, the microencapsulated solid acid is one of the effective means to solve this problem, and it is commonly used for deep acid fracturing of unconventional oil and gas reservoirs. This study describes the mechanism of action, structure and performance characteristics of microencapsulated solid acids, summarizes the research progress of acid fracturing technology with microencapsulated solid acid, and indicates the main research directions of acid fracturing technology with microencapsulated solid acid in the future. This study can provide technical support for the stimulation of ultra-high temperature carbonate reservoirs, and provide theoretical guidance for the research and application promotion of acid fracturing technology with microencapsulated solid acid.

Cite this article

Yang Zhaozhong , Peng Qingdong , Wang Zhenpu , Li Xiaogang , Zhu Jingyi , Qin Yang . Application and Prospect of Acid Fracturing Technology with Microencapsulated Solid Acid[J]. Special Oil & Gas Reservoirs, 2023 , 30(3) : 1 -8 . DOI: 10.3969/j.issn.1006-6535.2023.03.001

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