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Multi-Stage Displacement Systems

The TETRA Designed Spacer Pill (TDSP™) and TETRA Advanced Displacement System (TADS™) are multi-stage applications that provide optimal wellbore cleanup of water-based, diesel-oil-based, and synthetic-oil-based drilling muds. The systems are well-suited for applications where environmental concerns demand segregation of fluids.

TETRA Designed Spacer Pill (TDSP)

The TDSP is engineered to ensure compatibility with contacted fluids and typically entails application of three fluid spacers: the TDSP I weighted spacer, the TDSP II surfactant wash, and the TDSP III viscosified sweep.

TDSP I Mud Displacement Stage

The TDSP I is a weighted spacer that acts as a piston in the wellbore, pushing out the mud ahead of it and relying on yield point, gel strength, density, and apparent viscosity to maintain integrity as it travels through the wellbore.

TDSP II Surfactant Wash Stage

The TDSP II is a turbulent-flow spacer containing concentrated surfactants, specifically designed for the given mud to disperse residue from tubular surfaces.

TDSP III Viscosified Sweep Stage

The TDSP III spacer is a blend of polymers and thermal stabilizers that removes any remaining residue in the wellbore and prevents commingling of mud with completion fluid.

TETRA Advanced Displacement System (TADS)

The TADS is a three-phase drilling-fluid displacement system designed for optimal wellbore cleaning. Engineered to disperse solids and render all metal surfaces water-wet, the system is designed for direct and indirect displacement of water-based, diesel-oil-based, and synthetic-oil-based drilling fluids. Depending on the given application, it can be composed of low-or high-density halide brines and our TETRAClean 900-series chemicals.

TETRAClean 900

TETRAClean 900 is a natural, non-toxic, proprietary blend of bio-based solvents and surfactants, formulated to displace drilling mud. It is compatible with all mud types as well as with monovalent and divalent, high-density non-zinc-based brines.

TETRAClean 901

TETRAClean 901 is a natural, non-toxic, proprietary blend of bio-based solvents that rapidly removes all drilling mud from metal surfaces, rendering casing and pipe water-wet with almost 100% effectiveness. It is compatible with all mud types as well as with monovalent and divalent, high-density and non-zinc-based brines.

TETRAClean 902

TETRAClean 902 is a natural, non-toxic, proprietary blend of bio-based solvents designed to rapidly remove drilling mud from metal surfaces, providing 100% water-wetting of tubular surfaces.
It is compatible with all mud types as well as with monovalent and divalent, medium-to-high-density non-zinc-based brines.

TETRAClean 903

TETRAClean 903 is a proprietary blend of solvents and surfactants designed to remove drilling mud from metal surfaces and leave tubular surfaces water-wet. It is compatible with all mud types as well as standard completion brines and zinc-based brines. It is recommended for applications with fluid densities that require zinc-based fluids.
It is compatible with all mud types as well as with monovalent and divalent, medium-to-high-density non-zinc-based brines.

TETRA Oil Mud Detergent (OMD)

TETRA OMD is a dispersant that cleans casing and tubing of water-based and oil-based mud residue during mud displacement by a clean brine completion fluid. It is also effective at cleaning oil-based mud residue from rig mud pits and surface equipment prior to reintroducing clean brine fluids.

TETRA O-Sol Surfactant Wash

TETRA O-Sol is a surfactant wash that disperse and removes oil-based and synthetic-oil-based muds. It is also part of the TDSP II O-Sol surfactant wash formulation.

TETRASol

TETRASol is a proprietary blend of surfactants and solvents that removes hydrocarbons, oil-based materials, pipe dope, asphaltenes, and resins from metal surfaces. As a concentrate, it is used in both onshore and offshore rigs to remove diesel-oil-based mud from the wellbore before introducing completion fluid.