粒子射流冲击破岩效果影响因素试验研究

发布时间：2018-06-26 06:39

本文选题：粒子射流 + 冲击破岩　；参考：《石油钻探技术》2017年02期

【摘要】：为了更准确地分析粒子射流冲击破岩规律,从而有效指导粒子冲击钻井工艺参数的优选,通过粒子射流冲击破岩正交试验,确定了粒子射流各因素影响破岩效果的重要程度,然后根据单因素粒子射流冲击破岩试验,分析了粒子体积分数、粒子直径、喷射角度等主要因素对破岩效果的影响规律,并优选了粒子冲击参数。试验得出,粒子射流各因素对破岩效果的影响程度由大到小依次为喷射时间、粒子体积分数、粒子直径、喷射角度和喷距,最优粒子体积分数为2.0%,最优粒子直径为1.5mm,最优喷射角度为15°。研究结果表明,岩石破碎孔眼深度与粒子体积分数和粒子直径均成二次函数关系,与喷射角度成四次函数关系;孔眼体积与粒子体积分数、粒子直径和喷射角度均成三次函数关系。该研究结果可为粒子冲击钻井技术的推广应用提供理论支撑。
[Abstract]:In order to more accurately analyze the rock breaking rule of particle jet impingement and effectively guide the optimum selection of particle impact drilling technology parameters, through the orthogonal test of particle jet impact rock breaking, the important degree of particle jet influencing rock breaking effect is determined. Then, according to the single factor particle jet impact rock breaking test, the influence of particle volume fraction, particle diameter and jet angle on the rock breaking effect is analyzed, and the particle impact parameters are selected. The experimental results show that the effect of particle jet on rock breaking effect is in the order of jet time, particle volume fraction, particle diameter, jet angle and jet distance. The optimum particle volume fraction is 2.0, the optimum particle diameter is 1.5 mm, and the optimal jet angle is 15 掳. The results show that the depth of broken hole in rock is a quadratic function relation with particle volume fraction and particle diameter, a fourth function relationship with jet angle, a relationship between hole volume and particle volume fraction, The particle diameter and the injection angle are all cubic functions. The results can provide theoretical support for the popularization and application of particle impact drilling technology.
【作者单位】：中国石油大学(华东)石油工程学院;
【基金】：中国石油科学研究与技术开发项目“粒子冲击钻井技术研究与现场试验”(编号:2015F-1801) 山东省自然科学基金重点项目“粒子冲击钻井技术理论与关键技术”(编号:ZR2010EZ004)部分研究内容
【分类号】：TE21

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