| GFT型防塌减阻剂的性能评价与现场应用 |
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| 引用本文： | 蔡晓文,陈锡庆,熊正强,王世俱,张军,纪卫军.GFT型防塌减阻剂的性能评价与现场应用[J].探矿工程,2014,41(7):39-41. |
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| 作者姓名： | 蔡晓文 陈锡庆 熊正强 王世俱 张军 纪卫军 |
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| 作者单位： | [1]甘肃煤田地质局一四五队,甘肃张掖734000; [2]青海省水文地质工程地质环境地质调查院,青海西宁810008; [3]北京探矿工程研究所,北京100083 |
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| 基金项目： | 国土资源部地质调查项目（12120113097400） |
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| 摘 要： | 为解决现有沥青软化点高、分散性差、较低温度条件下润滑性差及稳定孔壁能力不强等问题，研制了以沥青及树脂材料为主要原料，软化点为35℃的GFT型防塌减阻剂。这种防塌减阻剂具有稳定性好，润滑能力强，在不增加钻井液粘度的同时，可有效降低钻井液的滤失量；沥青质粒子的附着能力强，可有效充填与封堵孔壁微裂缝、微孔隙，粘接破碎岩块或颗粒，提高孔壁稳定性。淡水膨润土基浆中加入1％的GFT型防塌减阻剂，其润滑系数降低率达80％以上。经青海鱼卡煤田勘探区ZK30-7孔及ZK30-8孔2个钻孔的现场应用，证明了GFT型防塌减阻剂对破碎地层具有良好的护壁效果；同时能显著降低钻具扭矩，体现出优良的润滑性能。
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| 关 键 词： | 孔壁稳定 防塌减阻剂 软化点 润滑性 |
| 收稿时间： | 2014/4/14 0:00:00 |
| 修稿时间： | 2014/4/14 0:00:00 |
Performance Evaluation and Field Application of GFT Anti-collapse and Drag Reduction Agent |
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| CAI Xiao-wen,CHEN Xi-qing,XIONG Zheng-qiang,WANG Shi-ju,ZHANG Jun and JI Wei-jun.Performance Evaluation and Field Application of GFT Anti-collapse and Drag Reduction Agent[J].Exploration Engineering(Drilling & Tunneling),2014,41(7):39-41. |
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| Authors: | CAI Xiao-wen CHEN Xi-qing XIONG Zheng-qiang WANG Shi-ju ZHANG Jun and JI Wei-jun |
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| Institution: | CAI Xiao-wen, CHEN Xi-qing, XIONG Zheng-qiang, WANG Shi-ju, ZHANG Jun, JI Wei-jun( 1. 145 Brigade, Gansu Bureau of Coal Geology, Zhangye Gansu 734000, China ; 2. Qinghai Institute of Hydrogeology and Engineering Geology and Environmental Geology, Xining Qinghai 810008, China; 3. Beijing Institute of Exploration Engineering, Beijing 100083, China) |
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| Abstract: | In order to solve the high asphalt softening point, poor dispersibility, poor lubricity at relatively low temperature and weak borehole wall stability, GFT anti-collapse and drag reduction agent was developed mainly preparing by asphalt and resin material with the softening point at 35℃.This agent exhibits its advantages of good stability and lubrication; it can effectively reduce the filtration of drilling fluid without the viscosity increasing;due to the strong adhesion ability of as-phaltene particle, the agent can effectively fill and seal the microcracks and microporosity of borehole wall and bond broken rocks or particles to increase the stability.With 1%GFT anti-collapse and drag reduction agent adding into freshwater ben-tonite slurry, the lubricating coefficient decreases is up to more than 80%.Through field application of GFT in boreholes of ZK30-7 and ZK30-8 in Yuqia coalfield exploration region, it is proved that GFT anti-collapse and drag reduction agent has good wall protection effect in broken formation, and can significantly reduce the torque of drilling tool with its excellent lubricity being present. |
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| Keywords: | borehole stability anti-collapse ＆ drag reduction agent softening point lubricity |
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