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首页> 外文期刊>The Saudi Aramco journal of technology >Investigation of the Stability of Hollow Glass Spheres in Fluids and Cement Slurries for Potential Field Applications in Saudi Arabia
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Investigation of the Stability of Hollow Glass Spheres in Fluids and Cement Slurries for Potential Field Applications in Saudi Arabia

机译：沙特阿拉伯中潜在现场应用的流体和水泥浆中空心玻璃球的稳定性研究

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摘要

Hollow glass spheres (HGSs) provide an attractive method to reduce the densities of drilling fluids and cement slurries for different objectives. There are several pressure ratings for HGSs, and selecting and testing the right type for the suitable application is important. The objective of this article is to evaluate the performance and stability of HGSs in three formulations: (a) HGS-based fluids at different pH conditions, (b) low-density water-based drilling fluids with HGSs as a density reducing additive, and (c) low-density cement (LDC) with HGSs as a density reducing additive. The evaluation of the stability of low density inhibited water-based fluids formulated with HGSs in diverse pH environments was for their potential application in the Wasia formations in Saudi Arabia. Intensive testing of the fluids in-cluded rheological properties, pH and density measurements before hot rolling (BHR) and after hot rolling (AHR) in different pH environments at high-pressure/high temperature (HPHT) for extended periods of time - up to four days. The evaluation of the stability of LDC utilizing HGSs was for their potential to cement shallow casings in gas wells and oil wells in Saudi Arabia. In this study, we present the results of extensive lab work that included rheology measurements, thickening time tests, free water and sedimentation tests, a fluid loss test and a compressive strength test. Data generated supported the use of low-density fluids for-mulated with HGSs in the Wasia formation when applicable, Also, this study supported the use of the examined cement for casings under shallow conditions in gas wells and oil wells. The shallow conditions simulated in the lab tests were at a static temperature of 158 °F and at 2,500 psi.
机译：中空玻璃球（HGS）提供了一种有吸引力的方法，可以降低针对不同目标的钻井液和水泥浆的密度。 HGS有多种额定压力，因此选择和测试适用于合适应用的正确类型非常重要。本文的目的是评估三种配方中HGS的性能和稳定性：（a）在不同pH条件下的HGS基流体;（b）以HGSs作为密度降低添加剂的低密度水基钻井液;以及（c）以HGS为降低密度的添加剂的低密度水泥（LDC）。用HGS配制的低密度抑制水基流体在不同pH环境中的稳定性评估是其在沙特阿拉伯Wasia地层中的潜在应用。在高压/高温（HPHT）下，在不同的pH环境中进行热轧（BHR）之前和热轧（AHR）之后的流体的流变特性，pH和密度测量的密集测试，需要延长的时间-直至四天。利用HGS对LDC的稳定性进行评估是因为它们有潜力在沙特阿拉伯的气井和油井中固结浅套管。在这项研究中，我们介绍了广泛的实验室工作结果，包括流变学测量，增稠时间测试，游离水和沉淀测试，滤失量测试和抗压强度测试。生成的数据支持在适用的情况下在Wasia地层中使用与HGS混合的低密度流体。此外，本研究支持在气井和油井的浅层条件下将所检查的水泥用于套管。实验室测试中模拟的浅层条件为静态温度158°F和2500 psi。

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