Rock Fracture During Oil Well Perforation

Evgenii Riabokon*, Mikhail Turbakov, Evgenii Kozhevnikov, Vladimir Poplygin, Marian Wiercigroch

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingPublished conference contribution

1 Citation (Scopus)

Abstract

Rock stress fields in the near wellbore of an oil well during perforation are modelled and studied numerically. The main parameters that influence the stress field of rocks during perforation are identified. The dynamic stress field formed in the near wellbore zone causes degradation of reservoir properties and annular zones of rock fracture formed around a production wellbore. The model of porous and permeable reservoir was built considering mechanical parameters such as Poisson’s ratio, Young’s modulus, coupling along the crack system, uniaxial compression strength and compressibility of cracks. The dynamics of rock fracture and stress state change were simulated using Finite Element Method. It is shown in the simulation that the type of perforation has a strong influence on the mechanism of rock fracture and distance of fracturing zone from the well. It is investigated in experiments that pressure drawdown between reservoir and bottomhole zones affects the formation stress state and as a result distribution of permeability and cracks opening.

Original languageEnglish
Title of host publicationAdvanced Problems in Mechanics APM 2019
EditorsD.A. Indeitsev, A.M. Krivtsov
Place of PublicationCham
PublisherSpringer
Pages185-192
Number of pages8
ISBN (Print)9783030498818
DOIs
Publication statusPublished - 16 Jul 2020
Event14th International Summer School-Conference on Advanced Problems in Mechanics, APM 2019 - St. Petersburg, Russian Federation
Duration: 24 Jun 201929 Jun 2019

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference14th International Summer School-Conference on Advanced Problems in Mechanics, APM 2019
Country/TerritoryRussian Federation
CitySt. Petersburg
Period24/06/1929/06/19

Keywords

  • Fracture
  • Jet
  • Modelling
  • Oil well
  • Perforation
  • Reservoir
  • Rock

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