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Inhibition performance of amidocyanogen silanol in water-based drilling fluid
Applied Clay Science ( IF 5.6 ) Pub Date : 2020-02-01 , DOI: 10.1016/j.clay.2019.105315
Qi Chu , Junlin Su , Ling Lin

Abstract In this study, a series of amidocyanogen silanols (HASes) modified by methacryloxy propyl trimethoxyl silane (MPS) with polyethylene polyamine was introduced as potential shale inhibitors, thus providing the development and application of high-temperature resistant shale inhibitors in water-based drilling fluids. One shale inhibitor was selected based on cuttings dispersion tests. The results indicated that the shale inhibitor prepared with tetraethylenepentamine and MPS with the mole ratio of 1:2 (named HAS-8) was the best. The inhibition performance of HAS-8 was evaluated with the cuttings dispersion test, linear swelling test, and bentonite inhibition test, and was compared with the performance of currently available polyamine inhibitors. The results indicated that HAS-8 can effectively inhibit the hydration swelling and dispersion of clay, and that its temperature resistance is significantly better than that of polyamine inhibitors. The inhibition mechanism of HAS-8 was investigated with X-ray diffraction, adsorption measurement, and thermogravimetric and transmission electron microscope analysis. The mechanism is the adsorption on the clay surface and the intercalation of the interlayer, which inhibited the surface hydration and osmotic hydration of the clay. In field application of Bei 9 well, the HAS-8 effectively inhibits the hydration of water-sensitive cuttings and maintains the wellbore stability of the shale formation, providing a guarantee for safe and fast drilling.

中文翻译:

氨基氰硅烷醇在水基钻井液中的缓蚀性能

摘要 本研究介绍了甲基丙烯酰氧基丙基三甲氧基硅烷(MPS)与聚乙烯多胺改性的一系列酰胺氰基硅烷醇(HASes)作为潜在的页岩抑制剂,为耐高温页岩抑制剂在水基钻井中的开发和应用提供了依据。流体。根据岩屑分散试验选择了一种页岩抑制剂。结果表明,四亚乙基五胺与MPS的摩尔比为1:2制备的页岩抑制剂(命名为HAS-8)效果最好。HAS-8的缓蚀性能通过岩屑分散试验、线性溶胀试验和膨润土缓蚀试验进行评价,并与现有多胺缓蚀剂的性能进行比较。结果表明,HAS-8能有效抑制粘土的水化溶胀和分散,其耐温性能明显优于多胺抑制剂。通过X射线衍射、吸附测量、热重和透射电子显微镜分析研究了HAS-8的抑制机制。其机理是黏土表面的吸附和夹层的插层,抑制了黏土的表面水化和渗透水化。在北9井现场应用中,HAS-8有效抑制了水敏岩屑的水化作用,保持了页岩地层井筒稳定性,为安全快速钻井提供了保障。通过X射线衍射、吸附测量、热重和透射电子显微镜分析研究了HAS-8的抑制机制。其机理是黏土表面的吸附和夹层的插层,抑制了黏土的表面水化和渗透水化。在北9井现场应用中,HAS-8有效抑制了水敏岩屑的水化作用,保持了页岩地层井筒稳定性,为安全快速钻井提供了保障。通过X射线衍射、吸附测量、热重和透射电子显微镜分析研究了HAS-8的抑制机制。其机理是黏土表面的吸附和夹层的插层,抑制了黏土的表面水化和渗透水化。在北9井现场应用中,HAS-8有效抑制了水敏岩屑的水化作用,保持了页岩地层井筒稳定性,为安全快速钻井提供了保障。从而抑制粘土的表面水化和渗透水化。在北9井现场应用中,HAS-8有效抑制了水敏岩屑的水化作用,保持了页岩地层井筒稳定性,为安全快速钻井提供了保障。从而抑制粘土的表面水化和渗透水化。在北9井现场应用中,HAS-8有效抑制了水敏岩屑的水化作用,保持了页岩地层井筒稳定性,为安全快速钻井提供了保障。
更新日期:2020-02-01
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