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Author:

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

Indexed by:

EI Scopus SCIE PKU CSCD

Abstract:

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.

Keyword:

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

Author Community:

  • [ 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

Reprint Author's Address:

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

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Source :

PETROLEUM EXPLORATION AND DEVELOPMENT

ISSN: 1000-0747

Year: 2019

Issue: 6

Volume: 46

Page: 1260-1270

ESI Discipline: GEOSCIENCES;

ESI HC Threshold:123

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 19

SCOPUS Cited Count: 21

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

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