Full scale testing of fast swell packer for shallow aquifer applications

T. Pervez, S. Z. Qamar, O. S. Al-Abri, M. V. De Velden, S. A. Al-Houqani, J. Van Eijden

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

Abstract

A full scale experimental setup was designed and commissioned for testing of swelling elastomer seals against a casing (cased hole) and formation (open hole). Actual replicate of wellbore was designed with varying inside diameters and roughness to reproduce the effect of actual formation. The Dynaset packer mounted on 7'' tubular was allowed to swell against a 9-5/8'' casing, while the fast swell packer mounted on 9-5/8'' tubular was allowed to swell against the 12-1/4'' replicated well bore. The fast swell elastomer will bridge the annulus between casing and OH to prevent total losses and to allow cement to surface. Recent drilling condition required the development and testing of fast swell packers to isolate shallow aquifers. Under actual shallow-aquifer field conditions (50°C and 0.5% salinity) 70% swelling was expected in 24 hours. However, under fresh water the swelling was achieved in more than 24 hours. It took approximately ten days for the elastomers to completely fill the irregular cavities in the replicated well bore. The test demonstrated the way the elastomers fill the asperities and was worth of observation for field engineers. The Dynaset packer at low salinity took 4 weeks to completely seal the gaps. Under high salinity it takes approximately 3 weeks for complete sealing. The measured-cum-calculated results showed that the swelled elastomers have developed an internal pressure of 50-70 bars against the leakage. Dismantling of the test setup showed that the elastomer has swelled to brain like surface structure, which was a startling observation and needs further work. Isolation of shallow aquifers and fractured formations has been a major challenge for many years in Oman. The requirement for zonal isolation of the shallow aquifers is often compromised by the total losses. The simplicity of solution using swellables will avoid a cocktail of chemicals and will open new applications to materialize low cost wells.

Original languageEnglish
Title of host publicationProceedings of the SPE/IADC Middle East Drilling Technology Conference and Exhibition
Pages640-648
Number of pages9
Publication statusPublished - 2011
EventSPE/IADC Middle East Drilling Technology Conference and Exhibition 2011, MEDT 2011 - Muscat, Oman
Duration: Oct 24 2011Oct 26 2011

Other

OtherSPE/IADC Middle East Drilling Technology Conference and Exhibition 2011, MEDT 2011
CountryOman
CityMuscat
Period10/24/1110/26/11

Fingerprint

Packers
Aquifers
Elastomers
Testing
Swelling
Seals
Surface structure
Brain
Drilling
Cements
Surface roughness
Engineers
Costs
Water

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Pervez, T., Qamar, S. Z., Al-Abri, O. S., De Velden, M. V., Al-Houqani, S. A., & Van Eijden, J. (2011). Full scale testing of fast swell packer for shallow aquifer applications. In Proceedings of the SPE/IADC Middle East Drilling Technology Conference and Exhibition (pp. 640-648)

Full scale testing of fast swell packer for shallow aquifer applications. / Pervez, T.; Qamar, S. Z.; Al-Abri, O. S.; De Velden, M. V.; Al-Houqani, S. A.; Van Eijden, J.

Proceedings of the SPE/IADC Middle East Drilling Technology Conference and Exhibition. 2011. p. 640-648.

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

Pervez, T, Qamar, SZ, Al-Abri, OS, De Velden, MV, Al-Houqani, SA & Van Eijden, J 2011, Full scale testing of fast swell packer for shallow aquifer applications. in Proceedings of the SPE/IADC Middle East Drilling Technology Conference and Exhibition. pp. 640-648, SPE/IADC Middle East Drilling Technology Conference and Exhibition 2011, MEDT 2011, Muscat, Oman, 10/24/11.
Pervez T, Qamar SZ, Al-Abri OS, De Velden MV, Al-Houqani SA, Van Eijden J. Full scale testing of fast swell packer for shallow aquifer applications. In Proceedings of the SPE/IADC Middle East Drilling Technology Conference and Exhibition. 2011. p. 640-648
Pervez, T. ; Qamar, S. Z. ; Al-Abri, O. S. ; De Velden, M. V. ; Al-Houqani, S. A. ; Van Eijden, J. / Full scale testing of fast swell packer for shallow aquifer applications. Proceedings of the SPE/IADC Middle East Drilling Technology Conference and Exhibition. 2011. pp. 640-648
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