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作者:

Wang Bin (Wang Bin.) | Li Jun (Li Jun.) | Liu Gonghui (Liu Gonghui.) | Li Dongzhuan (Li Dongzhuan.) | Sheng Yong (Sheng Yong.) | Yan Hui (Yan Hui.)

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摘要:

An innovative perforation method of interlaced fixed perforation was put forward based on the analysis of the characteristics of fractures in various periods of perforation and conventional perforation modes. By conducting a large-scale perforation shooting experiments, we investigated the morphology, propagation mechanism and propagation law of the near-wellbore fractures generated during perforating processes under different fixed angle and interlaced angle combinations, and discussed the control method of near-wellbore fractures in different types of unconventional oil and gas reservoirs. The experimental results show that: (1) The interlaced fixed perforation strengthens the connectivity between the perforation tunnels not only in the same fixed plane but also in adjacent fixed planes, making it likely to form near-wellbore connected fractures which propagate in order. (2) Three kinds of micro-fractures will come up around the perforation tunnel during perforation, namely type I radial micro-fracture, type II oblique micro-fracture and type III divergent micro-fracture at the perforation tip, which are interconnected into complex near-wellbore fracture system. (3) Different types of perforation bullets under different combinations of fixed angles and interlaced angles result in different shapes of near-wellbore fractures propagating in different patterns. (4) By using the interlaced perforation on fixed planes, arranging fixed planes according to the spiral mode or the continuous "zigzag" shape, the desired near-wellbore fractures can be obtained, which is conducive to the manual control of main fractures in the fracturing of unconventional or complex conventional reservoirs.

关键词:

control method hydraulic fracturing interlaced fixed perforation near-wellbore fracture physical simulation propagation law shale

作者机构:

  • [ 1 ] [Wang Bin]China Univ Petr, Beijing 102249, Peoples R China
  • [ 2 ] [Li Jun]China Univ Petr, Beijing 102249, Peoples R China
  • [ 3 ] [Yan Hui]China Univ Petr, Beijing 102249, Peoples R China
  • [ 4 ] [Liu Gonghui]Beijing Univ Technol, Beijing 100124, Peoples R China
  • [ 5 ] [Li Dongzhuan]PetroChina Res Inst Petr Prod Engn & Technol, Daqing 163000, Peoples R China
  • [ 6 ] [Sheng Yong]Jilin Shuanglin Perforating Equipment Co LTD, Jilin 132000, Jilin, Peoples R China

通讯作者信息:

  • [Wang Bin]China Univ Petr, Beijing 102249, Peoples R China

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来源 :

PETROLEUM EXPLORATION AND DEVELOPMENT

ISSN: 1000-0747

年份: 2019

期: 6

卷: 46

页码: 1260-1270

ESI学科: GEOSCIENCES;

ESI高被引阀值:44

JCR分区:1

被引次数:

WoS核心集被引频次: 16

SCOPUS被引频次: 13

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

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