4) penetration rate
机械钻速
1.
Simulation of penetration rate of air percussion drilling bit;
冲旋钻井机械钻速仿真研究
2.
Experimental investigation in transmission ratio and penetration rate of cone bits;
81／2XHP2S—1和81／2HP2型牙轮钻头传动比及机械钻速的试验研究
3.
It has long been held that the penetration rate of PDC bits is lower than roller bits during air drilling.
长期以来人们一直认为,在气体钻井中PDC钻头机械钻速没有牙轮钻头高,而且气体散热能力差,易损坏PDC钻头的复合片而使钻头早期失效,因此,在气体钻井中绝大多数使用牙轮钻头。
5) drilling rate
机械钻速
1.
In view of many problems faced by drilling in the lower stratum in Xujiaweizi region, such as complex geologic structures, high grade value of rock drillability, low drilling rate, slow footage, and long drilling cycle, it is urgent to correctly predict the grade value of rock drillability which will provide powerful references for a better drilling plan in reasonable way.
针对徐家围子地区下部地层的复杂情况,岩石可钻性级值较高,钻井机械钻速低、进尺慢和钻井周期长的问题,迫切需要准确预测徐家围子地区下部地层的岩石可钻性级值,为科学制定钻井计划提供有力依据。
2.
Although the drilling rate is related to the structure of the bit, property of the drilling fluid, drilling parameter as well as make-up of string and so on, the theory and practice indicates that the formation factor is the main factor in affecting drilling rate, which not only affects drilling rate directly, but also restrains the influence of drilling parameter on drilling rate.
虽然钻井的机械钻速与钻头结构、钻井液性能、钻进参数和钻具组合等因素密切相关,但理论和实践表明,地层因素仍是影响钻速的最主要因素,它不仅直接影响钻速,而且也制约着钻井参数对钻速的影响。
3.
The mechanical drilling rate relates closely to drilling bit structure,drilling fluid property,drilling parameters and drilling tool constitution,but according to theory and practice formation factor is still the one that impacts the drilling rate most.
钻井的机械钻速与钻头结构、钻井液性能、钻进参数和钻具组合等因素密切相关,但理论和实践表明,地层因素仍是影响钻速的最主要因素,它不仅直接影响钻速,而且也制约着钻井参数对钻速的影响。
6) rate of penetration
机械钻速
1.
There are many problems when drilling in the complex stratum formation in Xujiahe,Sichuan province,such as low rate of penetration,borehole collapse,high accident frequency,short bit life,and so on.
为了解决四川须家河组复杂地质条件下机械钻速慢、进尺少、井塌等事故发生率高等问题,在分析该地层岩层特性的基础上,针对龙17井岩样进行了岩石力学性能分析,并在此基础上开展了3种不同齿形与须家河组地层特性岩石接触的有限元仿真研究,得到了各齿形压入速度、压入深度和破碎体积随时间的变化曲线,为须家河地层钻头的设计提供了理论依据。
补充资料：低速炸药
分子式：
分子量：
CAS号：
性质：见炸药。
分子量：
CAS号：
性质：见炸药。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条