VeraTherm High-Temperature Water-Based Drilling Fluid | Schlumberger

VeraTherm

High-temperature water-based drilling fluid

300-degF water-based fluid system
Fluid loss control and long-term stability
Reuseability in multiple wells
Stability for extended wireline logging

Dual-function polymer benefits logging operations

Drilling wells with bottomhole temperature exceeding 300 degF requires the use of high-temperature-stable, water-based drilling fluids. Formate brines and supplemental thermal stabilizers are used to help extend the thermal stability of conventional polymer-based drilling fluids. However, this approach fails to provide the long-term thermal stability needed for extended wireline logging operations and requires substantial treatments plus several trips.

VeraTherm high-temperature water-based drilling fluid features a dual-function VeraVis branched synthetic polymer that acts as a viscosifier and fluid loss additive. This additive enhances the rheological profile and fluid loss control along with long-term stability and low sag tendency at elevated temperature conditions. The long-term thermal stability characteristic of the VeraTherm fluid is not only ideal for high-temperature wells requiring extended wireline logging, but has plenty of benefits:

  • reuse of fluid to multiple wells
  • many applications, such as overburden drilling, coiled tubing drilling, and intervention
  • great potential as an alternative to oil-based mud, helping to move our industry toward carbon footprint reduction.
World Oil Awards 2021 Best Oilfield Fluids and Chemicals Award
Schlumberger's VeraTherm High-Temperature Water-Based Drilling Fluid wins World Oil's 2021 Best Oilfield Fluids and Chemicals Award.
VeraTherm
High-temperature water-based drilling fluid
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