confining layer

Hydrocarbon reservoir with low porosity and permeability, water zone with high resistivity, tight sandstone reservoir and hyd.

低电阻率油气层在我国各油田普遍存在,其识别与评价一直是测井解释领域关注的难题,随着吐哈盆地勘探程度的进一步深入,油气层电性特征明显,丰度较高的大、中型油气田的发现将越来越难,在测井解释领域将越来越多面临的是低孔、低渗、高阻水层、致密砂岩储层和低电阻油气层。

Development of water-blocking LAN cable;

阻水数字通信电缆的研制

This paper presents a new type of semi-conductive water-blocking tape used for the insulation shield in power cables.

叙述了一种新型的半导电屏蔽阻水带,适用于电力电缆的绝缘屏蔽。

The water-blocking construction of cable and test method are analyzed and investigated by analysis of the factors responsible for water treeing and the waterblocking mechanism,considering the production practice.

通过电缆水树的产生原因、阻水机理的分析,结合生产实际,对电缆阻水结构、试验方法进行了分析和探讨。

The method of actual measurement coefficient of water-resisting to evaluate dangerousness of Ordovician limestone water invasion;

实测阻水系数评价奥灰突水危险性方法研究

The faceblank is an important functional assembly in the overall design of the facepiece,which puts other functional assemblies,such as eyepieces,breathing system,voice transmitter and nosecup etc.

罩体是将防毒面具中各功能部件(如眼窗、呼吸气系统、通话器和阻水罩等)组成为一个整体的骨架,是面罩总体设计中的一个重要部件,涉及面罩十多项技术性能指标。

The designs of the moulds for forming the faceshield and nosecup are stated.

介绍一种新型全脸式防护面具面罩的结构特点及其罩体、阻水罩模具的设计。

Based on the analysis of geological mining condition in Liyan Mine,those properties of coal and rock pillar for safety are studied,including chemistry component,its water-proof capability and lithology and mechanic characteristics.

在对里彦煤矿采矿地质条件分析的基础上,对安全煤岩柱的化学成分及其阻水性能、岩性及力学特征进行了研究。