formation pressure

Drilling fluid, known as the "blood" in drilling engineering, has the functions to carry cuttings, protection wall, balance formation pressure and reduce drilling tool wear.

钻井液是钻井工程的“血液”，具有携带钻屑、保护井壁、平衡地层压力和降低钻具磨损等功能。

Occurrence of abnormal formation pressure is common in Eocene faulted depression basin of east China.

中国东部断陷湖盆下第三系洼陷区，普遍存在异常高的地层压力。

Formation pressure identification model.

地层压力识别模型.

In the later period during the gas well production, the formation pressure, gas rate and carry capacity would be reducted, the part of formation water in the wellbore will stay in well bottom causing fluid accumulation.

天然气井生产到中、后期，地层压力降低，气产量下降，携带能力降低，部分进入井筒的地层水会滞留井底产生积液。

Analysis and Application of Formation Pressure Reducing Method in Deep Gas Well

深层气井地层压力折算方法分析及应用

Follow-up monitoring and evaluation of the formation pressure in the process of drilling

钻进过程中地层压力跟踪监测与评价

With the known formation pressure and saturation pressure, this formula helps to calculate the lowest allowable flowing pressure of a well or an oil field.

有了这个公式，只要知道地层压力和饱和压力，便可计算出油井或油田的最低允许流动压力。

Gas injection into fractured reservoirs can maintain the formation pressure and improve the displacement efficiency.

注气可以维持裂缝性储层的地层压力,并提高驱油效率.

This paper analyses the oil, gas and water saturation of two wells of core drilling with keeping formation pressure in Daqing Placanticline and draws a degassed correction chart of oil and water saturation.

通过对大庆长垣两口保压取心井油、气、水饱和度分析，绘制了油水饱和度脱气校正图版。

To obtain formation pressure data, formation pressure test by cable measures formation pressure of reservoir directly in open hole.

电缆地层压力测试是在裸眼井中直接测量储集层的地层压力，以获取地层压力资料。

Formation pressure detection while drilling is one of major means to realize optimizing drilling.

随钻地层压力检测是实现优化钻井的主要手段之一.

Based on the theoretical principle of percolation mechanism, the mathematical relations between single well production rate and formation pressure in each stratum are derived;

根据渗流力学理论原理，推导出单井产量与各层地层压力之间的数学关系；

During the drilling procedure, the mud filtrates continuously penetrate into the formation because of the unbalance between the mud column pressure in the borehole and formation pressure.

在钻井过程中，井筒泥浆柱压力和地层压力的不平衡使得泥浆滤液不断渗入地层。

How to use well logging interval transit time curve to compute formation pressure

如何用测井声波时差曲线计算地层压力

The focus of petroleum research is on the prediction of formation pressure.

地层压力的预测是石油地质研究的重点.

True and stable formation pressure and mud pressure can be provided by RFT test data.

RFT测试资料能提供真实可靠的地层压力和泥浆压力.

Based on regressing the curves of average relative permeability in single well, that the oil saturation distribution, permeability ( K) and average formation pressure have been gotten through seeking numerical solution to this two equations.

在回归出单井平均相对渗透率曲线的基础上，通过求两个偏微分方程的数值解，求出了径向上的含油饱和度分布、地层渗透率K和平均地层压力；

The formation pressure prediction by the efficiency stress method may offer dependable parameters for drilling design and balance pressure drilling.

介绍了有效应力法预测地层压力的原理及参数的求取方法。

Open flow potential will drop down with decline of formation pressure in a gas well.

随着气井地层压力的下降,其无阻流量相应降低.

The formation pressure system includes the overburden pressure ( P0), formation pore pressure ( Pp), fracture pressure ( FP) and breakout pressure ( BP).

地层压力体系包括上覆岩层压力（P0）、地层孔隙压力（Pp）、地层破裂压力（FP）和坍塌压力（BP）。

However, owing to lower formation pressure, a normal blasting fluid circulation cannot be built due to heavy loss of circulation.

然而，地层压力过低，可能导致无法建立正常的冲砂液循环，冲砂液大量漏入地层。

the method is derived by using material balance equation in combination with formation pressure.

该方法考虑地层压力采用物质平衡方程得到；

The dynamic reserve of the constant volume reservoir is calculated using material balance, and combined with elastic two-phase the formation pressure is calculated without well shut-in.

利用物质平衡法分区计算了定容气藏动态储量，并结合弹性二相法联立计算了不关井条件下的地层压力。

It furtherly analyzes the reasonable formation pressure and oil well flow pressure using economic evaluation.

以此为基础,进一步用经济评价方法确定了喇嘛甸油田合理地层压力及油井流压水平.

Methods to estimate formation pressure on the scientific exploratory well

科学探索井地层压力计算

And ( 4) the formation pressure should be kept above the bubble point pressure.

保持地层压力在泡点压力以上。

By actual testing data , the influencing degree of formation pressure and settle measure have been discussed.

通过实际测试的分析资料讨论了对地层压力的影响程度和解决办法.

The results show that the effective factors include the formation pressure, the energy of basal water, the pressure sensitivity and etc.

结果表明，影响采出程度的因素包括地层压力、底水能量和应力敏感等。

The mathematical model with threshold pressure gradient and injection-production ratio is constructed when the formation pressure change linearly on the base of material balance principle.

利用物质守恒原理，建立地层压力线性变化趋势下考虑启动压力梯度和注水强度影响的渗流数学模型。

In this paper, a new method is presented to define formation pressure in short-term closed-in pressure, which based on the research about theory of unstable well testing of fractal reservoirs.

通过分形油藏压力不稳定试井理论的研究，提出了一种使用短期关井压力数据确定地层压力的新方法。