reservoir pressure

The oil and gas wells produced water re-injection of treated ground, either to maintain reservoir pressure and to maintain productivity, and reduce effluent discharge, production and injection form a virtuous circle of balanced, has a very important industrial and environmental significance.

把油、气井产水经过处理回注地层，既可以保持地层压力，维持产能，又可以减少污水排放，形成产与注平衡的良性循环，具有十分重要的工业与环境保护意义。

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The Experiment Study of the Influencing Factors on the Threshold Pressure and the Driving Oil Efficiency of the Low Permeability Sandstone Reservoir

低渗透砂岩储层启动压力及水驱油效率影响因素实验研究

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Non-Cross-Flow Multilayered Reservoir Pressure Performance Distribution Synthesis Research

无窜流的多层油藏中压力动态分布研究

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By means of this proposed method, one can predict the change of the reservoir pressure under different withdrawal rates.

利用这个方法，可以预测在不同产量变化的条件下，未饱和油藏油层压力的变化。

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The study results also show that low-permeability reservoir gas injection has a threshold pressure, and the value of this experiment is 2.48 MPa.

低渗透油藏注气存在注气启动压力，本次实验为2.48MPa。

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The model can predict reservoir pressure.

该模型可以预测地层压力.

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The Laplace space solution to dimensionless reservoir pressure and dimensionless bottom pressure of variable flow problem, which takes into consideration the effect of three kinds of outer boundary conditions, is studied by using multi-layered reservoir model.

针对层间无窜流的多层油藏渗流模型，研究了3种外边界下的交流率问题的储层压力动态分布和井底压力的Laplace空间解。

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Based on the flow equation concerned on threshold pressure gradient and deforming media, this paper productivity equation and IPR forecasting method for low permeability reservoir.

基于考虑启动压力梯度和介质变形特性的单相流渗流方程，建立了适应于低渗透油藏油井的产能方程，并给出了低渗透油藏单相流IPR预测方法。

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Classification parameters for low permeability reservoir has been found, which is based on the impact of flooding efficiency and recovery percent, regarding penetration, movable fluid saturation, the average throat radius and the starting pressure gradient.

从渗透率、可动流体饱和度、平均喉道半径和启动压力梯度对低渗透储层驱油效率、采收率的影响程度出发，建立了低渗透储层分类的参数体系。

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Ground stress gradient in well test correlation with permeability and reservoir pressure, but it disperses widely.

试井地应力梯度尽管与渗透率、储层压力之间存在相关关系, 但离散性较大.

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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。

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Reservoir geometry significantly influences the flow field and consequently the pressure transient response reservoir fluid flow.

油藏几何形状对井底压力动态响应有显著的影响.常规的解析方法却只能解决一些简单、规则形状的问题.

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Through the established mathematical model and the given basic assumptions, CBM permeability and reservoir pressure of considering slippage effect and without considering slippage effect are comparatively studied by FEPG software.

通过建立的数学模型，在给出基本假设后，应用FEPG软件对考虑滑脱效应和不考虑滑脱效应煤层气渗透率、储层压力进行对比研究。

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Discussion on pressure-sensitivity effect and water-flooding timing in low-permeability reservoir

低渗透油藏压敏效应与注水时机研究

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During practical production, due to heterogeneity and control ascending of water cut latterly, reservoir pressure will be below bubble point pressure locally.

在实际生产过程中，由于储层非均质性，以及开发后期为了控制含水的上升，油藏中局部地区的压力会降到饱和压力之下。

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Hydrocarbon reservoir of Chang 8 presents" near-source and favorable facies", pressure difference gradient of resource-reservoir and pore configuration of reservoir control the distribution of oil saturation-resistivity index.

长8油藏具有近源、优相的成藏特点，源储压差梯度和储层孔隙结构控制含油饱和度&电阻增大率大小分布。

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Methods to determine hydraulic fracture height are summarized according to the logging temperature curve features after fracturing combined with reservoir pressure and logging time from stopping pump in Henan Oilfields.

本文根据河南油田压后井温曲线特征结合储层压力和测温时间，总结了判断裂缝高度的四种方法；

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Through artificial water injection to maintain reservoir pressure to develop oil fields.

通过人工向油层注水保持油层压力来开发油田.

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Reservoir Pressure Profile Adjustment Technique for Tertiary Infilling Adjustment Wells

三次加密调整井油层压力剖面调整技术研究

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The boundary conditions of reservoir has obvious influence on the pressure response, compared with constant-pressure boundary condition, sectional constant-pressure boundary condition obviously postpones the time of pressure derivative curve dropping;

油藏的边界条件对油藏的压力动态存在明显影响，与定压边界条件相比，分段定压边界条件明显延迟了压力导数曲线下掉的时间；

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By means of these parameters the initial oil in place, the initial amount of water in the aquifer, the cumulative water influx, can be evaluated simultaneously and the change of the reservoir pressure under different withdrawal rates can be predicted.

应用这些参数可以计算出油藏的原始原油储量，含水层的原始水储量，累积水侵量，以及预测在不同产量变化条件下油层压力的变化。

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New method of establishment of gas well productivity equation and reservoir pressure calculation

建立气井产能方程及计算地层压力的新方法

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By this method dynamic parameters of producers and in injecters can be used to estimate the reservoir pressure and dra-inage radius without well shut-in.

使用该方法，可以在不关井的情况下，用油水井动态参数，获得油井地层压力和驱动半径。

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The switch can be opened or closed when the well pressure is lower or higher than the reservoir pressure respectively.

此开关能在井内压力小于油层压力时开启，大于油层压力时关闭。

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