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- Variations in the fluid density are neglected so far as they influence the inertia. 就对惯性项的影响而言，流体密度的改变是可以忽略的
- On the basis of the formation pressure,rational underbalance pressure and drilling fluid density are determined. 以最优的钻井成本，能实现最容易和最安全的钻井施工来衡量欠压值选得是否合理。
- The model can be used to determine formation pore pressure and the optimum drilling fluid density to stabilize borehole. 利用该模型可确定地层孔隙压力和保持井眼稳定的最优钻井液密度等参数。
- Therefore, the key problem in this area is to obtain reasonable drilling fluid density by means of figuring out right formation caving pressure. 如何合理地计算地层坍塌压力,给出合理的钻井液密度,是新站地区最为关心的问题。
- If only raising drilling fluid density to prevent hole sloughing,it will lead to slow penetration rates and long drilling cycles. 如果单纯提高钻井液密度防塌，则导致机械钻速低，钻井周期长。
- The reasons forming abnormal formation pressure mainly includes digenesis, thermogenesis, biochemical action, tectonic action, dialysis, and fluid density difference action. 形成异常地层压力的原因主要有成岩作用、热力作用、生化作用、构造作用、渗析及流体密度差异作用等。
- 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。
- When underbalanced drilling or drilling easy leaky zone by using aeration fluid,the determination of fluid density and downhole fluid column pressure is very important. 利用气体型流体进行欠平衡钻井,或钻易漏地层时,流体密度及井下液柱压力的确定十分重要。
- The relationship of drilling fluid density and formation dip with borehole undergauge creep deformation encountered in salt beds in Xinjiang Oilfield drilling was studied. 研究了新疆某油气田钻遇的盐岩层段钻井液密度、地层倾角与井眼蠕变缩径的关系。
- Especially in nonresistant strata，in order to keep borehole wall stability we usually raise the drilling fluid density，but it seriously impede the rate of penetration. 尤其是不稳定地层，常常靠提高钻井液密度来保证井壁稳定，严重的制约了钻速的提高。
- The methods to calculate pressure,d rilling fluid density,gas content and solid content in borehole are given,and th eir distributions along the borehole are discussed. 给出了井眼中压力、钻井液密度、含气量和固体浓度的计算方法，并对它们的分布规律进行了研究。
- Using optimal control method, inversion of solid density and fluid density about the geological model of layer in Bi-phase media is studied in this paper. 利用最优控制法，对层状地质结构模型的双相介质中的固体密度和流体密度进行反演，给出了计算机模拟结果。
- gamma-ray absorption fluid density meter 伽马射线吸收型流体密度计
- Calibration method for the fluid density tool 流体密度下井仪标定方法
- The Digital Trend Development of Fluid Density Measurement 液体密度测量的数字化发展方向
- A Method of Determining Aerated Drilling Fluid Density for Wellbore Stability 维持井壁稳定的充气钻井液密度确定方法研究
- Study of Drilling Fluid Density Detection Based on Intelligent Sensor 基于智能传感器技术钻井液密度检测的研究
- Estimating Fluid Density of Oil and Gas with Compensated Neutron Logs 补偿中子测井估计油气流体密度
- A Brief Introduction of Comparative Pressure Differential Fluid Density Tester 比较压差式流体密度测试仪简介
- The density of population in this city is very high. 这个城市的人口密度非常高。
