Analytical modeling of acceleration-induced conductivity damage in a propped hydraulic fracture of a high-pressure gas well

Hailong Jiang, Mian Chen, Yan Jin, Kangping Chen

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The compressible pseudoradial and pseudosteady state flow in a well intersected by a finite-conductivity vertical fracture is analyzed. A modified dimensionless fracture conductivity reflecting the acceleration effect is introduced from a comparison of the mass rate of an accelerating flow and that of a Darcy flow at the same pressure drawdown. It is shown that a gas flow with the acceleration effect can be choked at a moderate drawdown pressure. The damage to the dimensionless fracture conductivity caused by the acceleration effect is significant when the fracture permeability is greater than 20D, the reservoir permeability is greater than 5mD, the fracture length is less than 200 m or the reservoir pressure is higher than 100 MPa. In a low permeability reservoir (<1 mD), the Forchheimer drag is significant, while the acceleration effect is negligible.

Original languageEnglish (US)
Pages (from-to)185-192
Number of pages8
JournalJournal of Natural Gas Science and Engineering
Volume26
DOIs
StatePublished - Sep 1 2015

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Hydraulics
Gases
Low permeability reservoirs
Flow of gases
Drag

Keywords

  • Acceleration effect
  • Dimensionless fracture conductivity
  • Gas flow rate
  • Propped hydraulic fracture

ASJC Scopus subject areas

  • Energy Engineering and Power Technology

Cite this

Analytical modeling of acceleration-induced conductivity damage in a propped hydraulic fracture of a high-pressure gas well. / Jiang, Hailong; Chen, Mian; Jin, Yan; Chen, Kangping.

In: Journal of Natural Gas Science and Engineering, Vol. 26, 01.09.2015, p. 185-192.

Research output: Contribution to journalArticle

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AB - The compressible pseudoradial and pseudosteady state flow in a well intersected by a finite-conductivity vertical fracture is analyzed. A modified dimensionless fracture conductivity reflecting the acceleration effect is introduced from a comparison of the mass rate of an accelerating flow and that of a Darcy flow at the same pressure drawdown. It is shown that a gas flow with the acceleration effect can be choked at a moderate drawdown pressure. The damage to the dimensionless fracture conductivity caused by the acceleration effect is significant when the fracture permeability is greater than 20D, the reservoir permeability is greater than 5mD, the fracture length is less than 200 m or the reservoir pressure is higher than 100 MPa. In a low permeability reservoir (<1 mD), the Forchheimer drag is significant, while the acceleration effect is negligible.

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