矿物油基钻井液低剪切流变行为调节技术研究

中国石油勘探 ›› 2015, Vol. 20 ›› Issue (4): 63-70.

矿物油基钻井液低剪切流变行为调节技术研究

张现斌¹赵　冲^1,2王伟忠¹黄达全¹邱正松²田增艳¹

1 中国石油集团渤海钻探工程有限公司泥浆技术服务分公司
2 中国石油大学（华东）石油工程学院

出版日期:2015-07-15 发布日期:2015-07-14
基金资助:
中国博士后科学基金第六批特别资助项目^“酰胺型流型调节剂对矿物油基钻井液低剪切流变性的影响^”（CPSF. 2013T60261）；天津市企业博士后创新项目择优资助计划（一等）^“全白油基钻井液流型调节剂的研制及其工业实践^”。

Technologies to Modify Low-shear Rate Rheology Behaviors of Mineral Oil Based Drilling Fluids

Zhang Xianbin¹Zhao Chong^1,2 Wang Weizhong¹ Huang Daquan¹Qiu Zhengsong² Tian Zengyan¹

1 Drilling Fluids Technology Service Company, BHDC, CNPC
2 School of Petroleum Engineering, China University of Petroleum (East China)

Online:2015-07-15 Published:2015-07-14

摘要/Abstract

摘要： 为了提高有机土在低芳香烃含量矿物油中的凝胶性质，研制了不同结构的流型调节剂，并对矿物油基钻井液的常规性能、低剪切速率黏度、线性黏弹性和高温高压流变性进行了实验研究。结果表明，含有聚酯酰胺型（BZ-ORM-Ⅰ）、聚酰胺基胺型（BZ-ORM-Ⅱ）和烷氧基胺型（BZ-ORM-Ⅲ）等流型调节剂的矿物油基钻井液，在密度1.30g/cm3时，低剪切速率黏度较高，剪切速率为1.7s^-1和0.17s^-1时的黏度符合^“动态沉降窗口^”理论要求，矿物油基钻井液弹性模量G^′大于黏性模量G^″，聚酰胺基胺型与烷氧基胺型流型调节剂具有明显的协同作用，高温高压条件下动切力和低剪切速率动切力较高。同时含有酰胺基、胺基和烷氧基的流型调节剂主要调节矿物油基钻井液的凝胶结构，使之具有良好的悬浮性能，并保持合适的弱凝胶性质。

关键词: 矿物油基钻井液, 流型调节剂, 低剪切速率流变性, 线性黏弹性, 加重材料沉降

Abstract: In order to improve the gelling behaviors of organic clay in mineral oil with low aromatic hydrocarbon content, several rheology modifiers are developed with different functional groups. A series of experiments are performed on mineral oil based drilling fluids to identify their general properties, low-shear rate viscosity, linear viscoelasticity and high temperature/high pressure rheology. It is shown that the mineral oil based drilling fluids containing rheology modifiers (e.g. polyester amide (BZ-ORM-Ⅰ), polyamidoamine (BZ-ORM-Ⅱ) and alkanolamine (BZ-ORM-Ⅲ)) present higher low-shear rate viscosity when the density is 1.30 g/cm³. The viscosities corresponding to shear rate of 1.7s^-1 and 0.17s^-1 meet the requirements of the ^“dynamic settling window^”theory and elastic modulus G^′is higher than viscous modulus G^″. An obvious synergistic effect occurs between polyamide amine and alkanolamine rheology modifiers, and yield values are higher in the situations of high temperature and high pressure or low shear rate. The rheology modifiers containing amide, amine and akloxy together are mainly used to realize excellent suspension properties and remain weak progressive gelling behaviors of mineral oil based drilling fluids by modifying their gelling structures.

张现斌, 赵　冲, 王伟忠, 黄达全, 邱正松, 田增艳, . 矿物油基钻井液低剪切流变行为调节技术研究[J]. 中国石油勘探, 2015, 20(4): 63-70.

Zhang Xianbin, Zhao Chong, Wang Weizhong, Huang Daquan, Qiu Zhengsong, Tian Zengyan. Technologies to Modify Low-shear Rate Rheology Behaviors of Mineral Oil Based Drilling Fluids[J]. China Petroleum Exploration, 2015, 20(4): 63-70.

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