CemFIT Shield Mud-Sealing Cement System | Schlumberger
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CemFIT Shield

Mud-sealing cement system

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Improve cement bond logs and maximize zonal isolation

At the technical limits of drilling fluid removal, cement bond quality and hydraulic isolation can be compromised by leaving channels behind the casing. This is particularly problematic in wells where differential pressures may promote interzonal fluid communication.

To avoid these problems, the CemFIT Shield system interacts with any remaining NAF to reduce its mobility and the likelihood of communication along channels.

Use conventional equipment and designs

CemFIT Shield system is compatible with conventional cements, additives, equipment, and designs, enabling simple blending, mixing, and pumping for most field applications. It can be designed for densities from 12 to 18 lbm/galUS [1.44 to 2.16 g/cm3] and temperatures up to 340 degF [171 degC].

CemFIT Shield Mud-sealing Cement System
CemFIT Shield system improves zonal isolation by reacting with nonaqueous fluid (NAF) left in the well after cementing to limit its mobility and improve resistance to fluid flow in channels. Dynamic rheometry results indicate CemFIT Shield system significantly increases the yield point in the mud channel.
CemFIT Shield
Mud-sealing cement system
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Case Study North Sea Operator Improves Cement Bonding for Waterflood

CemFIT Shield system eliminates mud channeling and creates a competent barrier across the shale.

Case Study West Africa Operator Boosts Zonal Isolation in Horizontal Well

CemFIT Shield system improves cement bond logs across all production zones.
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Tech Paper Elimination of the Sustained Casing Pressure using Self-Healing Cement in Turkmenistan Section of the Caspian Sea

An innovative and cost-effective solution was applied and successfully solved the SCP challenge due to its unique self-healing properties.

Article 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.

Video CemFIT Shield Mud-Sealing Cement System

Reduce NMF mobility and the likelihood of communication along channels.
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Tech Paper Effective Zonal Isolation in Horizontal Wells: Mitigating Negative Impact of Mud Channels

Preliminary results of field testing of new cement system that improves zonal isolation.

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