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Enhancing the performance of xanthan gum in water-based mud systems using an environmentally friendly biopolymer
Journal of Petroleum Exploration and Production Technology ( IF 2.4 ) Pub Date : 2020-02-03 , DOI: 10.1007/s13202-020-00837-0
Emmanuel U. Akpan , Godpower C. Enyi , Ghasem G. Nasr

Xanthan gum is commonly used in drilling fluids to provide viscosity, solid suspension, and fluid-loss control. However, it is sensitive to high temperatures and not tolerant of field contaminants. This paper presents an experimental study on the effects of an eco-friendly biopolymer (diutan gum) on xanthan gum (XC) in a water-based bentonite mud. Laboratory experiments were carried out for different compositions of the biopolymers in water-based bentonite muds formulated without salt and in water-based bentonite muds containing sodium chloride (NaCl). The rheological properties of the water-based bentonite muds formulated with XC (2 Ibm) and those of the water-based bentonite muds prepared using XC (1Ibm) and diutan gum (1Ibm) were measured using Model 1100 viscometer after aging at 25 °C, 100 °C, and 120 °C for 16 h. The API fluid loss and filter cake of the mud formulations were measured using HTHP filter press. The properties of the water-based bentonite muds containing only XC were compared with those of the water-based bentonite muds containing XC and diutan gum. Presented results show that combining diutan gum and xanthan gum in a ratio of 1:1 in a water-based bentonite mud enhances its performance with respect to fluid properties—apparent viscosity, gel strength, yield points, YP/PV ratio, LSRV, n, and K. The fluid formulations also showed favorable mud cake building characteristics. Experimental data also indicate a 16%, 19%, and 34% reduction in API fluid loss values for the water-based benitoite muds containing XC in the presence of diutan gum after aging at 25 °C, 100 °C, and 120 °C for 16 h, respectively. Experimental results also show that the water-based benitoite mud containing XC and diutan gum would cause less formation damage and was tolerant of contamination with a monovalent cation (Na+). The synergy of xanthan gum and diutan gum can, therefore, improve the performance of water-based drilling fluids.

中文翻译:

使用环保的生物聚合物增强黄原胶在水性泥浆体系中的性能

黄原胶通常用于钻井液中以提供粘度,固体悬浮液和流体损失控制。但是,它对高温敏感,对现场污染物不耐。本文介绍了一种环保型生物聚合物(diutan胶)对水性膨润土泥浆中黄原胶(XC)的影响的实验研究。在不含盐的水基膨润土泥浆和含氯化钠(NaCl)的水基膨润土泥浆中,对生物聚合物的不同组成进行了实验室实验。在25°C老化后,使用1100型粘度计测量由XC(2 Ibm)配制的水性膨润土泥和使用XC(1Ibm)和Diutan胶(1Ibm)制备的水性膨润土泥的流变性能。 ,100°C和120°C放置16小时。使用HTHP压滤机测量API流体损失和泥浆配方的滤饼。将仅含有XC的水性膨润土泥的性质与含有XC和丢丁胶的水性膨润土泥的性质进行了比较。目前的结果表明,在水基膨润土泥中以1:1的比例混合Diutan胶和黄原胶,可提高其在流体特性(表观粘度,凝胶强度,屈服点,YP / PV比,LSRV,ñķ。流体配方还显示出有利的泥饼增稠特性。实验数据还表明,在25°C,100°C和120°C老化后,在存在diutan胶的情况下,含有DiC的含XC的水性膨润土泥浆,API流体损失值分别降低了16%,19%和34%。分别持续16小时。实验结果还表明,含有XC和Diutan胶的水基膨润土泥浆对地层的损害较小,并且对单价阳离子(Na +)的污染具有耐受性。因此,黄原胶和地黄胶的协同作用可以改善水基钻井液的性能。
更新日期:2020-02-03
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