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- no permeable of drilling fluid 无渗透钻井液
- The priority is on keeping the exposed rock formation in the borehole stable while avoiding the loss of drilling fluid. 此时的重点是要保持钻孔中裸露岩层的稳定,同时还要避免钻井液流失。
- Based on the basic principle of hydromechanics,the flow characteristic of drilling fluid on the screen was studied. 利用流体力学的基本原理,对钻井筛筛面上钻井液的流动特点进行了研究;
- The drilling fluid design was completed by CBR and RBR according to the requirement of drilling fluid design. 根据钻井液设计要求,用基于范例推理(CBR)和规则推理(RBR)方法完成钻井液的设计。
- It is shown that return permeability of MMH drilling fluid weighted by marble or marble/ barite is higher than those of sized salt system and oil based mud . MMH钻井液体系用大理石或大理石和重晶石组合加重时,其渗透率恢复值高于盐粒液和油基钻井液体系,是一种优良的保护油层钻井液体系。
- Aerated mud is a kind of drilling fluid with gas,liquid and solid triphase matter distributed evenly and stably. 充气钻井液是一种气、液、固三相物质均匀稳定分散的体系。
- Its results indicates that all indexes of drilling fluid are good and can meet the needs of drilling engineering. 现场应用结果表明,无粘土钻井完井液各项性能指标良好,能很好地满足钻井工程的需要。
- Abstract: The drilling fluid design was completed by CBR and RBR according to the requirement of drilling fluid design. 中文摘要: 根据钻井液设计要求,用基于范例推理(CBR)和规则推理(RBR)方法完成钻井液的设计。
- When the screw is tightened, the collars are tensioned, and the high pressure of drilling fluid will increase the tension force. 同时在钻井时,受拉钻铤内部的高压钻井液会使其受到进一步的拉力。
- The "Ideal Packing Theory" is used to optimize temporary plugging project of drilling fluid for formation damage control. 采用一种理想充填新方法,对保护储层的钻井液暂堵方案进行了优化设计。
- The numerical calculation result shows that the viscosity and air voids of drilling fluid have notable influences on the transmission of DPSK signal. 数值计算表明,钻井液黏度和含气率对信号传输的影响最大。
- In order to increase sieving efficiency of drilling fluid shale shaker, a new complex track shale shaker was put forward. 为了提高钻井液振动筛的工作效率,设计了一种复合轨迹振动筛。
- After sidetracking,reaming to slim-hole can remove formed polluted zone,decrease invasion depth of drilling fluid and reduce reservoir damage. 侧钻后对小井眼进行扩孔,可以去掉钻井过程中形成的污染带,降低钻井液侵入油层的深度,减少对油层的损害。
- Well leakage in the process of drilling is a complicated situation that drilling fluid seeps into an underground layer because of the pressure. 井漏是在钻井作业过程中,钻井液在压差的作用下流进地层的一种井下复杂情况。
- This paper presents the working principle, structure, characteristics of viscometer at a high shear rate of drilling fluid. 介绍了钻井液高剪切速率下粘度测试仪的工作原理、结构、特点。
- She had lots of drill in listening. 她在听力方面受过许多训练。
- Including Newton, Bingham and exponential models, Robertson-Stiff model can express rheologic properties of drilling fluid at different shear rates much better. 它包括了牛顿、宾汉和指数模式,因而能较好地反映各类钻井液在不同剪切速率下的流变特性。
- Some factors can affect swarf\|carrying capacities, such as annular velocity, rheological properties and density of drilling fluid, deviation angle of hole, and size of swarf. 对钻井液的环空返速、流变性能、密度及井眼倾角、铣屑尺寸等参数对侧钻水平井套管段铣铣屑环空运移的影响进行了实验研究。
- After months of drilling, oil was found off the coast. 经数月钻探,在沿海找到了石油。
- The limit value of drilling fluid density for avoidingthe borehole wall instability and the hydrostatic column pressure model were also determinedin this paper. 并根据井壁面岩块的极限稳定条件,建立了防止井壁岩块失稳的极限及井内钻井液柱压力模型。