Sorbents for high density aqueous well fluids

Zinc-free aqueous brines with halogen-containing sorbents address the crystallization and contamination issues in high-density fluids, ensuring effective pollutant removal and regulatory compliance for oilfield applications.

WO2025015261A1PCT designated stage expired Publication Date: 2025-01-16ALBEMARLE CORP
View PDF 4 Cites 0 Cited by

Patent Information

Application Number
PCT/US2024/037764
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-07-12
Filing Date
2024-07-12
Publication Date
2025-01-16

AI Technical Summary

Technical Problem

Conventional high-density aqueous brine fluids used in oilfield applications, such as calcium bromide, face issues with crystallization at high downhole pressures and temperatures, and the inclusion of zinc necessitates costly environmental mitigation measures due to regulatory concerns, while also containing mercury and other contaminants that need to be removed.

Method used

Development of zinc-free aqueous brines with halogen-containing sorbents that capture mercury and other contaminants, maintaining high density and low crystallization temperatures, thus avoiding zinc-related issues and effectively removing pollutants from produced water.

Benefits of technology

The zinc-free halogen-containing sorbents effectively reduce mercury and other heavy metal contamination in produced water, maintaining fluid stability and compliance with environmental regulations without the need for zinc, enhancing the suitability of these fluids for high-pressure oilfield applications.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

This invention provides aqueous fluids which comprise a halogen-containing sorbent comprising one or more halogens selected from fluorine, chlorine, bromine, and / or iodine, and one or more substrate materials, and a zinc-free aqueous brine.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Compositions for thermal insulation and methods of using the same

    US20040059054A1

  • High Density Aqueous Well Fluids

    US20200181471A1

  • High density, low TCT monovalent brines and uses thereof

    US20200255715A1

  • Sorbents for the oxidation and removal of mercury

    US20210170332A1