ENDURA FLUID SYSTEM
High-performance water-based drilling fluid system
Endura* high-performance brine-compatible drilling fluids include the EnduraDril* inhibitive divalent water-based drilling fluid and its compatible additives—a suite of products highly compatible with field brine fluids, including Bakken brine.
The EnduraDril fluid has been proved to outperform traditional oil-based muds (OBMs) in the Bakken shale plays. But that’s not all: It works with existing brine, is solids free, and because it is saltwater-based, minimizes impacts from saltwater contamination.
Endura fluids and additives include:
• EnduraDril inhibitive divalent water-based drilling fluid
• EnduraSlide* divalent water-based lubricant
• EnduraCap L* encapsulating polymer additive
• EnduraSurf* anticrete and ROP-enhancing additive
• EnduraTrol* fluid loss control additive.
EnduraSlide* divalent water-based lubricant is designed for use with the EnduraDril water-based fluid for drilling unconventional shale prospects in onshore operations. For lubricity and wellbore stability, 2 to 5 vol% of EnduraSlide lubricant should be added directly to the active circulating system at or near the pump suction over one circulation period.
EnduraCap L* encapsulating polymer additive is ideally suited for water and brine solutions.
EnduraCap L additive should be added though the hopper or directly into an agitated pit to ensure a uniform distribution of the polymer. It can also be premixed with water or brine and used in a polymer injection unit to aid in efficiency of solids removal by centrifuge.
EnduraSurf* anticrete and ROP-enhancing additive is designed for the EnduraDril fluid for unconventional drilling prospects in onshore operations. For ROP enhancement, 1 to 3 vol% by volume of EnduraSurf additive should be added directly to the mud system at or near the pump suction over one circulation period.
EnduraTrol* fluid loss control additive is a nonionic natural polymer designed for use in the EnduraDril fluid, including high-salinity and high-hardness brines. EnduraTrol additive is an economical and effective filtration-control additive.