Smart lost circulation materials for productive zones

Ahmed Mansour, Arash Dahi Taleghani, Saeed Salehi, Guoqiang Li, C. Ezeakacha

Research output: Contribution to journalArticle

Abstract

Lost circulation has been a serious problem while drilling that may lead to heavy financial costs in the form of lost rig time and lost mud fluid. In severe cases, it can lead to well blowout with serious environmental hazards and safety consequences. Despite extensive advances in the last couple of decades, lost circulation materials used today still have disadvantages such as damaging production zones, failing to seal large fractures or plugging drilling tools. Here, we propose a new class of smart expandable lost circulation material (LCM) to remotely control the expanding force and functionality of the injected LCM. Our smart LCM is made out of shape memory polymers that become activated by formation’s natural heat. Once activated, these particles can effectively seal fractures’ width without damaging pores in the production zone or plugging drilling tools. The activation temperature of the proposed LCM can be adjusted based on the formation’s temperature. We conducted a series of experiments to measure the sealing efficiency of these smart LCMs as a proof of concept study. Various slot disk sizes were used to mimic different size fractures in the formation. The API RP 13B-1 and 13B-2 have been followed as standard testing methods to evaluate this product.

Original languageEnglish (US)
Pages (from-to)281-296
Number of pages16
JournalJournal of Petroleum Exploration and Production Technology
Volume9
Issue number1
DOIs
StatePublished - Mar 1 2019

Fingerprint

Drilling
drilling
Seals
blowout
Shape memory effect
Application programming interfaces (API)
testing method
environmental hazard
sealing
Hazards
Chemical activation
material
mud
polymer
temperature
Temperature
Fluids
safety
Testing
Polymers

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Energy(all)

Cite this

Mansour, Ahmed ; Dahi Taleghani, Arash ; Salehi, Saeed ; Li, Guoqiang ; Ezeakacha, C. / Smart lost circulation materials for productive zones. In: Journal of Petroleum Exploration and Production Technology. 2019 ; Vol. 9, No. 1. pp. 281-296.
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Smart lost circulation materials for productive zones. / Mansour, Ahmed; Dahi Taleghani, Arash; Salehi, Saeed; Li, Guoqiang; Ezeakacha, C.

In: Journal of Petroleum Exploration and Production Technology, Vol. 9, No. 1, 01.03.2019, p. 281-296.

Research output: Contribution to journalArticle

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