Mechanically induced permeability damage due to rock proppant interactions

A. Reinicke, B. Legarth, S. Stanchits, E. Huenges, G. Dresen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Hydraulic proppant fracturing technology is used for a wide range of problems from bypassing drilling induced near wellbore damage to increasing productivity of extreme low-permeable reservoirs. During production the placed proppant pack interacts mechanically with the rock matrix. This causes proppant embedment and grain / proppant crushing and leads to permeability damage at the fracture face. To investigate this mechanically induced fracture face skin (FFS) new laboratory equipment was used to quantify the permeability damage ratio at the fracture face and to locate the damaging events via acoustic emission (AE). High permeable Bentheim sandstone as well as low permeable Flechtingen sandstone was investigated. The tests point out that crushing and fines production starts at low stresses at the fracture face. This effects a permeability reduction at the fracture face up a factor of 67 compared to the initial rock permeability for high permeable rock. For low permeable rock the permeability reduction factor is about 7. The conducted tests give evidence that rock matrix proppant interactions induce a significant permeability reduction and leads to mechanically induced FFS.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - 70th European Association of Geoscientists and Engineers Conference and Exhibition - Incorporating SPE EUROPEC 2008
PublisherSociety of Petroleum Engineers
Pages3323-3327
Number of pages5
ISBN (Print)9781605604749
DOIs
Publication statusPublished - 2008
Externally publishedYes
Event70th European Association of Geoscientists and Engineers Conference and Exhibition - Incorporating SPE EUROPEC 2008 - Rome, Italy
Duration: 9 Jun 200812 Jun 2008

Publication series

Name70th European Association of Geoscientists and Engineers Conference and Exhibition 2008: Leveraging Technology. Incorporating SPE EUROPEC 2008
Volume6

Conference

Conference70th European Association of Geoscientists and Engineers Conference and Exhibition - Incorporating SPE EUROPEC 2008
Country/TerritoryItaly
CityRome
Period9/06/0812/06/08

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