两螺杆钻具挠轴在运转过程中突然断裂。
During its operation, the imported universal shaft of threaded drilling tools was fractured.
计算表明：螺杆钻具压降随钻压的增加而增大；
The pressure drop increases as WOB bocomes bigger, the bigger the delivery of PDM, the larger the pressure drop.
空气螺杆钻具是专为空气钻井而设计的动力装置。
The air screw drill tool was power equipment which was designed for air drilling.
介绍了一种螺杆钻具液马达试验架的工作原理及实际使用情况。
The working principle and application of a hydraulic testing platform for screw drilling tools are introduced.
螺杆钻具外壳体是螺杆钻具的关键零部件，也是易失效件之一。
The shell of positive-displacement motors is the key component of down-hole motors, it is also a main vulnerable parts.
在理论研究的基础上，编制了气体螺杆钻具输出特性分析软件。
The analyzing software about the output performance of the air PDM was programmed on the basis of theoretical research.
螺杆钻具挠性轴设计中的两个主要问题是强度校核和干涉量计算。
The main Problems with designing the flexible shaft on a screw drill are strength check and interference calculation.
这一观点，有可能使螺杆钻具与螺杆泵的寿命短的现状有所改善。
Based on this, we may make improvement to prolong the life of screw drill tool and screw pump.
应用非线性有限元法，建立了中短半径水平井螺杆钻具力学模型。
Based on the nonlinear FEM, a mechanical model for PDM used in medium - and short-radius horizontal well drilling is established in this paper.
本发明提出一种带有骨架式定子的螺杆钻具，属于钻井工具领域。
The invention provides a screw drill with a skeleton-type stator, belonging to the field of drilling tools.
对比分析了空气螺杆钻具与泥浆马达在空气钻井井况下的性能差异。
The performance difference between air crew drill and mud motor was analyzed under the air drilling condition.
研制后者的目的，在于改善现有中空转子螺杆钻具的软特性和低效率。
The purpose for the later is to improve the existing rotor screw drill for high efficiency. Subject heading: horizontal drilling screw drill tool control bending sub st...
由于螺杆钻具本身具有良好的动力特性，在套管内侧钻中得到广泛应用。
Positive displacement motor is widely used in sidetrack drilling inside casing because of its excellent dynamic characteristic.
螺杆钻具的高转速可以为PD C钻头提高切削速度提供井下动力保障。
High rotate speeds of dynamical drilling tools can improve PDC bit's cutting rates, and also can provide downhole motives.
用螺杆钻具组合实施煤矿工程孔定向钻进时，钻头侧向力是其主要力学特性。
The operation performance of PDC bits with screw drill tool appplied now in oilfield were analyzed comprehensively.
本发明涉及一种用于石油钻井的螺杆钻具，具体涉及石油钻探设备技术领域。
The invention relates to a screw rod drilling tool used for petroleum drilling, and particularly relates to the technical field of petroleum drilling equipment.
因此，研究气体螺杆钻具在井下的输出性能对水平井气体钻井有着非常重要的意义。
So the research on the output performance of the air PDM is of great significance for the gas drilling during the horizontal well drilling.
根据螺杆钻具转子加工时与铣刀的相对位置，建立空间螺旋齿面坐标系和铣刀坐标系。
According to the relative position of the rotor of the screw motor and the milling cutter, the coordinates of the helical tooth form and the cutter are-established.
提出了以螺杆钻具钻头油井系统的综合负载特性曲线作为螺杆钻具正确选择和使用的依据。
The author proposes taking the comprehensive load curve of the screw drill-drill bit-oil well system as the basis for the proper selection and use of screw drills.
为了确保螺杆钻具的效率和使用寿命，研究了采用液马达驱动的螺杆钻具逆向检测试验法。
In order to ensure the efficiency and service life of screw drilling tools, an inverse inspection method for screw drilling tools driven by hydraulic motor is investigated.
在钻井施工作业中，螺杆钻具常因砂卡导致螺杆马达工作失效，导致螺杆钻具报废，严重影响了正常钻井作业。
During drilling process, screw drill motor sometimes doesn't work properly or even seriously damaged because of sand jamming.
在介绍螺杆钻具试验台硬件框架的基础上，着重阐述了基于计算机的性能测试数据采集系统的实现方法和软件设计。
After a brief introduction of the hardware frame for downhole motors test table, the design method of performance test data acquisition system is described.
螺杆钻具是其中的一项关键技术，其主要目的是研制满足侧钻中短半径水平井需要的小尺寸高造斜率的弯外壳螺杆钻具。
Small size bent housing screw drill with high build rate must be developed to meet the requirements of sidetracking the short to medium radius horizontal well.
对于连续导向钻具组合来说，由于其弯螺杆的存在，使得其在任何一个瞬态的受力变形都有其独特的特征。
For a continuous steering drill tool assembly, because there is crew in it, any transient forced deformation has its special characters.
对于连续导向钻具组合来说，由于其弯螺杆的存在，使得其在任何一个瞬态的受力变形都有其独特的特征。
For a continuous steering drill tool assembly, because there is crew in it, any transient forced deformation has its special characters.
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