Impact of fracture cleanup on the productivity of gas condensate systems

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The performance of fracturing treatments has been an issue for over fifty years and considerable effort has been devoted to improve its prediction performance. However, the effect of cleanup in tight gas-condensate reservoirs where fracturing considered as the most common well stimulation technique, has not been fully investigated for these low IFT systems. The performance of cleanup operation heavily depends on the mobility, i.e., viscosity and relative permeability (kr), of fracturing fluid compared to those of gas and condensate. This determines the extent of invaded zone near the wellbore region and the ease with which fracturing fluid is removed during the back-flow operation. In this work, measured values of permeability, single-phase inertial factor and kr of a propped fracture and those of a tight reservoir rock have been used to evaluate the performance of fracturing treatments. ECLIPSE 300 compositional reservoir simulator, which includes our in-house kr correlations accounting for coupling (i.e., the increase of k r as velocity increases and/or IFT decreases) and inertial (i.e., the reduction of kr as velocity increases) effects, was used to develop realistic fractured flow systems. A sensitivity analysis on the impact of different hydraulic fracturing fluid, fracture characteristics and reservoir fluids on the productivity of a single-well model were conducted resulting in some practical guidelines. The results indicated that the performance of 300 cp high viscosity fracture fluid is better than that of 10 cp low viscosity fluid, due to a lower penetration depth. When kr of oil based fracturing fluid is improved, compared to that of water based, the back flow of fracturing fluid is facilitated especially for the 10 cp low viscosity fluid. Presnece of condensate facilitate the backflow of fluid, hence, cleanup efficiency is better for richer fluid systems. Copyright 2007, Society of Petroleum Engineers.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers, 7th European Formation Damage Conference 2007 - Pushing Technology Boundaries: Rejuvenating Fields and Skills
Pages224-230
Number of pages7
Volume1
Publication statusPublished - 2007
EventSPE European Formation Damage Conference 2007 - Scheveningen, Netherlands
Duration: 30 May 20071 Jun 2007

Conference

ConferenceSPE European Formation Damage Conference 2007
CountryNetherlands
CityScheveningen
Period30/05/071/06/07

Fingerprint Dive into the research topics of 'Impact of fracture cleanup on the productivity of gas condensate systems'. Together they form a unique fingerprint.

  • Cite this

    Jamiolahmady, M., Ganesh, D., Sohrabi Sedeh, M., Danesh, A., & Sohrabi, M. S. (2007). Impact of fracture cleanup on the productivity of gas condensate systems. In Society of Petroleum Engineers, 7th European Formation Damage Conference 2007 - Pushing Technology Boundaries: Rejuvenating Fields and Skills (Vol. 1, pp. 224-230)