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研制和开发了一些新的处理剂,不仅有利于体系流变性和流体降滤失的调控,而且改善了水基钻井液的抑制性能。在过去的几十年中,由于可替代膨润土高性能聚合物的培植,黏度参数产生了巨大的变化。正因如此,具备低固相的流体便成为射孔液成功的关键。这种开发出的对环境无害的阳离子聚合物体系由页岩抑制剂、流体降滤失剂和一种能提高黏度和凝胶结构的聚合物构成。其成分是专为高性能水基钻井液而设计的,它呈现出灵活性,可与工业水、海水或盐水相配制,均能保持其流体的流变性能。本文对该体系的某些性能进行了讨论,并与巴西石油公司所使用的常规钻井液体系作了比较。
Developed and developed a number of new treatment agents, not only conducive to the system rheology and fluid loss control, but also to improve the water-based drilling fluid inhibition. In the past few decades, viscosity parameters have changed dramatically due to the substitution of high-performance bentonite polymers. For this reason, fluids with a low solid phase become the key to successful perforation. This developed environmentally friendly cationic polymer system consists of shale inhibitors, fluid loss control agents, and a polymer that increases viscosity and gel structure. Designed for high-performance water-based drilling fluids, its components are flexible and can be formulated with industrial, marine or brine fluids to maintain the rheological properties of their fluids. This article discusses some of the properties of the system and compares it to conventional drilling fluid systems used by Petrobras.