查询词典 pressure reservoir

When the sandstone gas reservoir is drilled open by the underbalanced drilling using water based mud, the underbalance pressure normally can hardly offset the imbibition capillary force of the rock, which may result in backwash imbibition.

这种自吸效应可能对砂岩气藏水基欠平衡钻井的储层保护效果产生影响，但目前与之有关的实验研究还很缺乏。

During the exploitation of untabulated reservoir ,the existence of starting pressure gradient make this problem eve.

在表外油层的开发过程中，由于启动压力梯度的存在，使得这种情况更为突出。

For a higher yield, the multibranch well bore should be perpendicular to the direction of maximum principal permeability, b. for a given coalbed methane reservoir, there is an optimal interspace, by which a bigger control area and the interaction among the branches can be obtained, and c. with the extension of the branch, gas yield becomes obviously higher, while the branch length should be an appropriate value on account of the influence of coal bed boundary and wellbore pressure drop. The research results have guiding significance for well pattern optimization and efficient development of coalbed methane gas.

结果发现：为了获得较高的产能，多分支井的井筒应垂直于最大主渗透率方向；对于给定的煤层气藏，存在一个最优的分支间距，既能保证较大的控制面积，又能保证分支间的互相影响；随着分支长度的增高，产气量也显著增大，但是考虑到煤层边界和井筒压降的影响，分支长度也应该有一个比较合理的值。

The boundary height of natural gas coming-up is accreting along with the reservoir temperature and pressure decreasing.

根据气体状态方程及天然气运移的动力学理论，推导出温度和压力降低前、后气体流速比方程，用其计算了不同储层中临界气体长度并分析不同储层中相同长度的气体在运移途中的变化规律。

Based on the mechanism of water coning of horizontal wells in bottom-water drive reservoir the critical production pressure difference is obtained.

6在分析底水油藏水平井开发底水脊进原理的基础上，建立了底水油藏水平井开发的临界生产压差计算公式。

The method adopts the basic thought of lateral prediction of reservoir, combine logging and seismic data, builds the nonlinear mapping model of neural network between seismic attributes and sonic logging and then extrapolates sonic curves then predicts formation pressure ahead of bit.

该方法引用储层横向预测的基本思路，将测井与地震相结合，通过建立地震属性与测井声波之间的神经网络非线性映射模型，进而反推井底以下声波曲线并预测地层压力。

The problem of interaction of dam-reservoir for cored rockfill dams are also deeply discussed, and the author points out that it seems unnecessary to overestimate the impact of hydrodynamic pressure for cored rockfill dams constructed on deep overburdens.

在本文的研究中，作者还对深覆盖层上的心墙土石坝坝—库水相互作用问题进行了深入研究，并指出对修建在深覆盖层上的心墙土石坝进行动力分析时过分强调动水压力的影响似乎没有必要。

If rock compressibility is calculated by the elastic modulus method, its results are relatively reasonable. But if it is calculated by the Hall Plate empirical formula, the value of rock compressibility is too large. Thai's to say, it overvalues the elastic energy of formation rocks. And the velocity of pressure drawdown of the gas reservoir numerical simulation is caused to be too slow.

由Hall图版经验公式法计算得到的岩石压缩系数偏大，即对地层岩石的弹性能量估计偏大，从而导致气藏数值模拟计算的压降速度偏慢；而采用弹性模量法计算岩石压缩系数，其结果相对较为合理。

The result shows that when in-place oil with its viscosity higher than 1.0mPa·s percolates through reservoir rocks with permeability less than 1×10~-3 μm~2, both have start-up pressure gradient, and it increases with the decrease of rock permeability and increase of crude oil viscosity, as oil wettability of the rocks increas...

结果表明，粘度大于1·0mPa·s的地层油通过渗透率小于1×10-3μm2的地层岩石渗流时，均具有启动压力梯度，且启动压力梯度随岩石渗透率的减小和原油粘度的上升而增大；岩石的亲油性增强，启动压力梯度增大；含有束缚水的岩样的启动压力梯度大于不含有束缚水的岩样。

The technology for waste mud reinjected into high-permeability reservoir is applied in Linnan Oil Field, which reduces the pollution of solid mud for environment. The field test in Xia52-414 Well shows that the injection pressure can be kept to 11 million Pascal when the concentration of sludge in waste mud is ten percent.

引 言 胜利油田有限公司临盘采油厂临南油田属中低渗透油藏，注入水为回注污水(pH值为6.5，总矿化度为40511～55149 mg/L)，注采系统腐蚀、结垢严重，为解决此矛盾，实施了改性水工程，但在取得防腐、防垢较好效果的同时，所产生的固体废物则急剧增加。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。