Interpretation of the skin factor for predicting the perforation-induced formation damage in reservoirs

M. A. Rahman, T. Heidrick, B. Fleck, M. Koksal, M. R. Islam

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

Abstract

This study has established that permeability is decreased in the range of 30%-75% due to the implement of the conventional method of perforation by shooting (PS) technique compared to the openhole completion. As a result, a new perforation technique called perforation by drilling (PD) has been proposed in this paper. To simulate a perforated completion, cylindrical sand samples (0.0572 m OD) with varying strength and porosity were prepared. These samples were perforated (0.0136 m ID) by the PS, PD and Casting techniques. Perforations created by the Casting techniques are considered the ideal openhole perforation tunnel. An important measure of flow efficiency or productivity of perforation completions can be referred to as skin factor (s). In this paper, the performance of the PS, PD, and Casting technique was measured in terms of skin factor. Experimental results show that the s in the PD and PS techniques is 0.20 and 17 respectively, for the ratio of rd/rp is 1.5. Thus, in terms of inflow efficiency the PD technique is superior compared to the PS technique.

Original languageEnglish
Title of host publicationGeothermal Resources Council Transactions - GRC 2006 Annual Meeting
Subtitle of host publicationGeothermal Resources-Securing Our Energy Future
Pages283-288
Number of pages6
Publication statusPublished - 1 Dec 2006
Externally publishedYes
EventGRC 2006 Annual Meeting: Geothermal Resources-Securing Our Energy Future - San Diego, CA, United States
Duration: 10 Sep 200613 Sep 2006

Publication series

NameTransactions - Geothermal Resources Council
Volume30 I
ISSN (Print)0193-5933

Other

OtherGRC 2006 Annual Meeting: Geothermal Resources-Securing Our Energy Future
CountryUnited States
CitySan Diego, CA
Period10/9/0613/9/06

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Keywords

  • Formation damage
  • Formation permeability
  • Inflow performance
  • Perforation tunnel
  • Skin factor

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Geophysics

Cite this

Rahman, M. A., Heidrick, T., Fleck, B., Koksal, M., & Islam, M. R. (2006). Interpretation of the skin factor for predicting the perforation-induced formation damage in reservoirs. In Geothermal Resources Council Transactions - GRC 2006 Annual Meeting: Geothermal Resources-Securing Our Energy Future (pp. 283-288). (Transactions - Geothermal Resources Council; Vol. 30 I).