| 水敏性地层钻探用接枝淀粉聚合物泥浆体系研究 |
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| 引用本文： | 陶士先,胡继良,纪卫军.水敏性地层钻探用接枝淀粉聚合物泥浆体系研究[J].地质与勘探,2012,48(5):1029-1033. |
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| 作者姓名： | 陶士先 胡继良 纪卫军 |
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| 作者单位： | 北京探矿工程研究所,北京,100083 |
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| 基金项目： | 地质矿产资源调查评价专项 |
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| 摘 要： | 以接枝淀粉共聚物为降失水荆，选择抑制荆、防塌剂、润滑剂、包被剂、膨润土等处理剂，优化设计了水敏性地层用接枝淀粉聚合物泥浆体系。经过测试，该体系的API失水为7ml，相对膨胀降低率84．2％，岩屑回收率92％，摩阻系数0．07。该体系在水敏性地层的钻探施工中取得了良好的使用效果。
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| 关 键 词： | 水敏性地层 钻探 泥浆体系 接枝淀粉 聚合物 |
Study of the Grafted Starch-polymer Mud System Used for Drilling in Water-sensitive Strata |
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| TAO Shi-xian,HU Ji-liang,JI Wei-jun.Study of the Grafted Starch-polymer Mud System Used for Drilling in Water-sensitive Strata[J].Geology and Prospecting,2012,48(5):1029-1033. |
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| Authors: | TAO Shi-xian HU Ji-liang JI Wei-jun |
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| Institution: | (Beijing Institute of Exploration Engineering,Beijing 100083 ) |
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| Abstract: | In this study, we designed and optimized a starch graft polymers mud system used for drilling in water-sensitive strata, using the graft copolymer of starch as filtrate reducer, selecting inhibitor, anti-sloughing agent, lubricant, encapsulating agent and bentonite as treating agents. Tests show that the system’s API filtrate loss is 7ml; the reduction of relative expansion is 84.2%; recovery of cuttings is 92%; and the friction coefficient is 0.07. This mud system has achieved good results in real drilling in water-sensitive strata. |
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| Keywords: | water-sensitive strata drilling mud system grafted starch polymer |
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