Effective Modified Xanthan Gum Fluid Loss Agent for High-Temperature Water-Based Drilling Fluid and the Filtration Control Mechanism.
Effective Modified Xanthan Gum Fluid Loss Agent for High-Temperature Water-Based Drilling Fluid and the Filtration Control Mechanism.
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高温水基钻井液用高效改性黄原胶降滤失剂及滤失控制机理
DOI：
10.1021/acsomega.1c02617
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发表时间：
2021-09-21
期刊：
影响因子：
4.1
通讯作者：
Zheng X
中科院分区：
文献类型：
--
作者：
Zhu W;Zheng X
黄原胶（XG）因其环保性和功能多样性而被广泛用作油田化学处理剂。随着钻井深度的增加和地层复杂程度的增加，溶解性差、耐温性差等缺点逐渐暴露出来。本研究通过XG与丙烯酸（AA）、丙烯酰胺（AM）和2-丙烯酰胺基-2-甲基丙磺酸（AMPS）的接枝反应，合成了一种改性XG衍生物XG-g-AAA。通过傅里叶变换红外光谱和核磁共振氢谱（1H NMR）确定了XG-g-AAA的化学结构。考察了该复合材料的溶解性、高温流变性、抗Na+/Ca 2+性、高温过滤性和相容性。结果表明：（1）XG-g-AAA在水溶液和盐溶液中均能在15 min内完全溶解，其溶解度显著提高，更适合现场应用。(2)XG-g-AAA对高温不敏感，在150和180 °C下的粘度衰减分别比XG降低23.3%和21.3%。XG-g-AAA基钻井液是一种具有显著剪切变稀特性的优质钻井液，幂律模型是描述其高温流变性的最佳模型。在150 °C内，1.5% XG-g-AAA可保持合理的流动性指数（n）（0.55-0.69）、过滤体积（<11.6 mL）和足够的凝胶强度（GS）。在150-200 °C时，推荐使用3% XG-g-AAA。n值在0.45-0.62之间，液体损失在10 mL以内。然而，3% XG-g-AAA在200 °C下不能提供足够的GS;因此，建议添加剪切强度改进剂。(3)XG-g-AAA显示出优异的耐污染性和相容性。在室温下可抵抗2wt%CaCl2和35wt%NaCl，在150 °C老化后可抵抗0.75%CaCl2和5%NaCl。(4)XG-g-AAA与磺化钻井液具有良好的配伍性，可替代商品降滤失剂用于配方中。通过分析XG-g-AAA对膨润土层间距、粒度分布、胶体体系稳定性和泥饼的影响，探讨了XG-g-AAA的高温降滤失机理。
Xanthan gum (XG) was widely used as an oilfield chemical treatment agent because of its environmental protection and diverse functions. With the increased drilling depth and formation complexity, the shortcomings such as poor solubility and low resistance to temperature were gradually exposed. In this study, a modified XG derivative XG-g-AAA was synthesized by grafting XG with acrylic acid (AA), acrylamide (AM), and 2-acrylamido-2-methylpropane sulfonic acid (AMPS). The chemical structure of XG-g-AAA was determined by Fourier transform infrared spectroscopy and nuclear magnetic resonance (1H NMR). Then, the solubility, high-temperature rheology and filtration properties, resistance to Na+/Ca2+, and compatibility were investigated. Results show that (1) both in aqueous and salt solutions, XG-g-AAA can completely be dissolved within 15 min. The significant improvement of the solubility of XG-g-AAA makes it more suitable for field use. (2) XG-g-AAA is less sensitive to high temperatures, and the viscosity decay decreased by 23.3 and 21.3% than XG at 150 and 180 °C, respectively. XG-g-AAA-based drilling fluid is a high-quality drilling fluid with significant shear thinning behavior, and the power-law model is the optimal model to describe its high-temperature rheology. Within 150 °C, 1.5% XG-g-AAA can maintain a reasonable value of the flow behavior index (n) (0.55–0.69), filtration volume (<11.6 mL), and sufficient gel strength (GS). At 150–200 °C, 3% XG-g-AAA is recommended. The value of n was in the range of 0.45–0.62, and the fluid loss was within 10 mL. However, 3% XG-g-AAA cannot provide enough GS at 200 °C; thus, a shear strength-improving agent is recommended to be added. (3) XG-g-AAA showed excellent contamination tolerance and compatibility. It could resist 2 wt % CaCl2 and 35 wt % NaCl at room temperature and 0.75% CaCl2 and 5% NaCl after 150 °C aging. (4) XG-g-AAA showed compatibility with sulfonated drilling fluids and could replace commercial fluid loss agents in the formula. Furthermore, the high-temperature fluid loss control mechanism was discussed by analyzing the effects of XG-g-AAA on the bentonite layer spacing, particle size distribution, stability of the colloidal system, and mud cakes.
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影响因子：
7.4
作者：
Jia, Han;Huang, Pan;Lv, Kaihe
通讯作者：
Lv, Kaihe
影响因子：
11.2
作者：
Pandey, Sadanand;Do, Jeong Yeon;Kang, Misook
通讯作者：
Kang, Misook
DOI：
10.1080/15567030902842244
发表时间：
2010-01-01
影响因子：
2.9
作者：
Benyounes, K.;Mellak, A.;Benchabane, A.
通讯作者：
Benchabane, A.
影响因子：
2.2
作者：
da Luz, Railson C. S.;Fagundes, Fabio P.;Balaban, Rosangela de C.
通讯作者：
Balaban, Rosangela de C.
乳液和溶液制备的丙烯酰胺/AMPS 共聚物作为钻井液降滤失剂的比较
影响因子：
4.1
作者：
Ma, Jingyuan;Xia, Boru;An, Yuxiu
通讯作者：
An, Yuxiu