Rock drillability of rock samples was studied by means of experiment under zero pore pressure and simulated down hole conditions.
本文用试验方法研究了石油钻井过程中井底岩石零孔隙压力条件下的岩石可钻性。
Exact Prediction and calculation of mechanical property and drillability of rock can provide the necessary base for the optimization of bits and designing parameters, thereby quickening penetration.
准确预测和计算岩石的力学性质和可钻性是有针对性地优选钻头、优化设计参数，从而提高钻井速度的重要依据。
This is a response of the bottom - hole unloading effect on rock drillability which is a new concept of deep well drillability.
该过程反映了井底岩石的卸载效应，是深井岩石可钻性的一个新概念。
Rock drillability test is the foundation of prediction rock drillability from well logging data.
室内岩石微可钻性测试是测井预测岩石可钻性的实验基础。
Study on rock mechanics of deep wellbore, especially on rock drillability and rock anisotropy is a key project to resolve the problems of deep or ultra-deep well drilling.
深部井眼岩石力学的研究，特别是深部井眼岩石可钻性和岩石各向异性的研究，是解决深井、超深井钻井关键技术的重要课题。
The study of Rock drillability and blastibility is a basic topic in the fields of drilling and blasting, it has important practical meaning also.
岩石可钻性和可爆性研究是凿岩爆破领域的基础性课题，同时也具有重要的实际意义。
Nowadays, at home and abroad, there are few reports about how to predict rock drillability of wildcat well before drilling in new exploration area.
目前，国内外关于新探区野猫井的岩石可钻性钻前预测方面的研究很少。
For wild well, there are lack of logging data and core data. Therefore, present evaluation methods of rock drillability can not be applied to predict rock drillability of wildcat well before drilling.
现有评价方法不能满足对缺少测井资料和岩心资料的野猫井的岩石可钻性进行钻前预测的需要。
Evaluating rock drillability distribution rule before strata has been opened has practical significance to guidance of drilling construction.
预先评价未打开地层的岩石可钻性分布规律，对钻井施工提供指导是有实际意义的。
The value of rock drillability is usually used to select the type of bit.
钻头类型通常用岩石可钻性级值的大小来选择。
The fractal theory is applied to interpret the fracturing mechanism of rock debris which is analysed by the drillability energy test methods.
将分形理论用于解释岩石可钻性能量测试方法中岩屑试样的破碎机理。
The paper figured out the volume of rock drillability and optimum bit selecting program.
求出了新疆麦盖提地区可钻性级值及最优钻头选型方案。
The triaxial compressive strength of rock is one of the most important formation parameters of drillability, and is the principal basis of polycrystalline diamond compact(PDC) bits selection.
岩石三轴抗压强度是表征地层抗钻性质的重要参数之一，是PDC钻头优选的基础和主要依据。
The rack can be used to work on all kinds of micro-drilling experiments such as analyzing of rock sample drillability, testing of diamond tools aging and life span.
它可在室内从事各种微钻实验，包括岩样可钻性分析、金刚石钻具时效、寿命等实验。
It is proved that using this method can avoid the lack of calculating rock drillability using single method and it can provide better reference for bit type selection a...
这样求出的可钻性级值将为钻头选型和地层分层提供更好的参考。
It is proved that using this method can avoid the lack of calculating rock drillability using single method and it can provide better reference for bit type selection a...
这样求出的可钻性级值将为钻头选型和地层分层提供更好的参考。
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