Bridging Agents
More on TETRA Bridging Agents
Microfiber Bridging Agents
Introduction
Microfibers are specially manufactured, acid soluble mineral fibers. The mineral fibers are long and flexible and will interlock to form a strong, dense filter cake. Microfibers are recommended for bridging and plugging voids and fractures. They are also the preferred choice to treat lost circulation in wells with high bottomhole temperatures. Microfibers are thermally stable in excess of 500ºF and are compatible with fresh water, completion brines, and diesel oil based muds.
TETRA Magmafiber Regular
Composed of fine acid soluble microfibers, TETRA Magmafiber Regular is used to build a robust filter cake. TETRA Magmafiber Regular is recommended to seal microfractures, as well as permeable and underpressured sand formations.
TETRA Magmafiber Fine
Composed of medium sized acid soluble microfibers, TETRA Magmafiber Fine is used to build a robust filter cake. TETRA Magmafiber Fine is recommended to bridge and plug voids and fractures.
Calcium Carbonate Bridging Agents
Introduction
Calcium carbonate (CaCO3) bridging agents are acid soluble. They effectively bridge and seal formations with low to moderate porosity and permeability, and they enhance filter cake characteristics. Calcium carbonate bridging agents are used as the primary bridging agents in TETRA fluid loss control pills to rapidly establish an effective filter cake across permeable intervals during drilling operations.
TETRACarb Prime
A fine grind, high purity calcium carbonate (CaCO3) bridging agent, TETRACarb Prime has a particle size distribution ranging from 2 to 150 microns and a D50 value of 12 microns. TETRACarb Prime is sized to flow through prepacked screens without bridging and to be easily removed by acidizing.
TETRACarb Ultra
An ultra fine grind, high purity calcium carbonate (CaCO3)bridging agent, TETRACarb Ultra exhibits a narrow particle size distribution ranging from 1.5 to 20 microns and a D50 value of four microns. TETRACarb Ultra is sized to flow through prepacked screens without bridging and to be easily removed by acidizing. It is primarily used in prepack fluids as a bridging and sealing agent to maintain filter cake integrity across production intervals, while sand control tools, such as prepacked screens, are being used.
TETRACarb Fine
A select grind, high purity calcium carbonate (CaCO3) bridging agent, TETRACarb Fine has a particle size distribution ranging from 10 to 500 microns and a D50 value of 55 microns.
TETRACarb Medium
An intermediate range, select grind calcium carbonate (CaCO3) bridging agent, TETRACarb Medium has a particle size distribution ranging from 85 to 1200 microns and a D50 value of 370 microns.
TETRACarb Coarse
A select grind, sized calcium carbonate (CaCO3) bridging agent, TETRACarb Coarse has a particle size distribution ranging from 1000 to 3500 microns and a D50 value of 1800 microns.
TETRACarb Flake
A sized calcium carbonate (CaCO3) bridging agent, TETRACarb Flake has the physical dimensions of a flat, sheet like material, rather than a conventional spherically shaped calcium carbonate.
Sized Salt Bridging Agents
Introduction
Sized salt bridging agents are made from selected grades of sodium chloride (NaCl). Sized salt bridging agents are designed to provide optimum bridging and sealing of productive intervals. They are easily removed by applying undersaturated sodium chloride brine fluid, produced water, or fresh water.
TETRA SS Fine
A select grind sodium chloride (NaCl) bridging agent, TETRA SS Fine has a particle size distribution of 1.0 to 800 microns and a D50 value of 48 microns. It is used to control seepage.
TETRA SS Medium
A select grind sodium chloride (NaCl) bridging agent, TETRA SS Medium has a particle size distribution of 100 to 1500 microns and a D50 value of 500 microns. It is used to control seepage and lost circulation.
TETRA SS Coarse
A select grind sodium chloride (NaCl) bridging agent, TETRA SS Course has a particle size distribution of 1,000 to 10,000 microns. It is used to control lost circulation.
