plugging agent

[′pləg·iŋ ‚ā·jənt]

(petroleum engineering)

A chemical used to plug or block off selected permeable zones of a reservoir formation; used during formation acidizing to direct the acid to the tighter (less permeable) zones; examples are viscous gels, suspensions of graded solids, and finely ground vegetable material.

References in periodicals archive ?

POLY SWELL: A co-polymer that provides excellent results when used as a lost circulation control additive and/or plugging agent.

Inrock/drillers supply

Summary: Various technical problems are currently encountered in using regular plugging agents.

Synthesis and Performance Evaluation of High-Temperature and High-Salinity Tolerance Polymer Microspheres

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