This article reviews the common well cements and describes the basic nature of the cement-formation bond in zonal isolation and its effects on the mechanical and hydraulic performance. The cements are Classes G and H Portland well cements. The cement-formation interface bonding mechanism is a combination of the mechanical indentation of the cement hydrates that interlock to the formation surface and the chemical reactions that occur between the cement slurry and constituents of the rock grains. Mechanical indentation occurs as the hydration products epitaxially grow at the formation surface. The degree to which each of these processes accounts for the formation of the bond is unknown. Here we provide a review of well cement and cement-formation bonds and a discussion of the possible factors that are proposed to influence the microstructural, chemical, and mineralogical properties at the cement-formation interface. In addition, we present some findings about how these factors affect the mechanical and hydraulic performance of the cement-formation bond in zonal isolation.

中文翻译：

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普通井水泥及其胶结形成机理

本文回顾了普通井水泥，并描述了层间隔离中水泥形成键的基本性质及其对机械和水力性能的影响。水泥为G级和H级波特兰井水泥。水泥与地层的界面粘结机制是互锁到地层表面的水泥水合物的机械压痕和水泥浆与岩石颗粒成分之间发生的化学反应的结合。随着水合产物在地层表面外延生长，发生机械压痕。这些过程中每个过程占键形成的程度是未知的。在这里，我们对油井水泥和水泥形成键进行了综述，并讨论了可能影响微观结构的可能因素，胶结层界面的化学和矿物学性质。此外，我们还提供了有关这些因素如何影响区域隔离中水泥形成键的机械和水力性能的一些发现。