Deflocculation additives for wellbore servicing fluid additives

Liquid additive compositions with deflocculants like lignosulfonates in glycol-based fluids address offshore cementing challenges by preventing gel formation, enhancing efficiency and reducing waste in wellbore servicing.

WO2026111744A1PCT designated stage Publication Date: 2026-05-28HALLIBURTON ENERGY SERVICES INC
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
HALLIBURTON ENERGY SERVICES INC
Filing Date
2024-12-11
Publication Date
2026-05-28

AI Technical Summary

Technical Problem

Offshore wellbore cementing operations face challenges due to limited equipment and space on offshore platforms, leading to excess material usage and increased costs, while conventional methods using magnesium oxide as a powder lead to unnecessary complexity and environmental impacts.

Method used

The use of liquid additive compositions comprising particulate materials like calcined MgO suspended in glycol-based fluids, with deflocculants such as lignosulfonates to prevent gel formation, allowing for efficient cement slurry preparation and use in wellbore servicing.

Benefits of technology

The solution reduces gelation issues, enabling effective cementing operations with reduced material waste and environmental impact, optimizing resource use on offshore platforms.

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Abstract

A liquid additive composition comprising a particulate material, an organic carrier fluid, a deflocculant, and optionally a viscosifier and / or a surfactant; wherein the particulate material is substantially insoluble in the organic carrier fluid, and wherein the organic carrier fluid comprises a glycol and / or a glycol ether. A method comprising (a) contacting a particulate material, an organic carrier fluid, a deflocculant, and optionally a viscosifier and / or a surfactant to form a mixture; and (b) agitating the mixture to form the liquid additive composition.
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Citation Information

Patent Citations

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