New Interactive Cementing System Improves Zonal Isolation in Horizontal Wells | SLB
Article
Publication
JPT Online
Publication Date
5/1/2019
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Article Topics
Stimulation & Acidizing Cementing

New Interactive Cementing System Improves Zonal Isolation in Horizontal Wells

Judy Feder, JPT Technology Editor, summarizes SPE 191561, “Effective Zonal Isolation in Horizontal Wells: Mitigating Negative Impact of Mud Channels,” by Schlumberger and Occidental Petroleum

Hydraulic isolation of wells drilled with nonaqueous fluids (NAFs) relies heavily on eliminating mud from the annuli before placing cement. Failure to expel all NAFs results in residual fluid channels that may compromise well integrity and can serve as nonproductive communication pathways during subsequent stimulation treatments. This paper presents an interactive cementing system (ICS) that is designed to mitigate these risks by reducing conductivity of the residual mud channels.

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