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First, the speed of the reaction between mud acid and rock is very fast, the effective distance of acid is short, active acid can not reach deep formation.

首先,高温下常规土酸与地层矿物反应速度极快,酸液有效作用距离短,活性酸不能到达地层深部;其次,HF与铝硅酸盐的化学反应不是简单的一次反应,其副产物氟硅酸和氟铝化物还可与铝硅酸盐发生二次反应和三次反应,形成一系列不溶性的沉淀物,对储层造成严重伤害;第三,高温情况下酸液对井下管柱及工具腐蚀性很强,对缓蚀剂性能要求高。

Based on indoor measurement of rock acoustic velocity,drillability, rigidity ,uniaxial compressive strength,the relationship between acoustic velocity and fragmentation parameters of rocks and that between the surface acoustic velocity and the underground mine logging acoustic velocity were explored by regression analysis.

在室内测定岩石声波速度、可钻性、硬度、单轴抗压强度试验的基础上,利用回归分析方法,探索声波速度与岩石机械破碎性能参数之间、地面声波速度与井下测井声波速度之间相关关系,建立了利用测井声波速度预测地层岩石机械破碎性能参数的数学模型,介绍了预测剖面及资料验证结果,并将这一方法用于计算PDC钻头可钻性以及中国南方海相碳酸盐岩地层的岩石力学参数。

The calculation result indicates that the construction method of the connecting tunnels is reasonable, and it also has a guidance function on tunnels construction and the affirmance of stratum reinforcement region.

得出过站区隧道施工引起的地层沉降和塑性区分布,数值计算结果表明过站区施工方案是合理可行的,计算结论为地层加固范围提供了依据,对过站区隧道施工有指导作用。

The strata in this section cover three lithostratigraphic units, seven conodont zones, five ammonoid zones and three bivalve zones. Two normal and two reversed magnetic polarity zones as well as the cyclic sequences corresponding to the Milankovitch climate periods driven by the Earth's orbit are well recognized in the lower part of the section.

该剖面包括3个岩石地层单元、7个牙形石带、5个菊石带、3个双壳类带;在剖面下段地层中识别出2个正向磁性带和2个反向磁极性带;与地球轨道天文周期相对应的Milankovitch气候沉积旋回也可以明确地辨认;碳氧同位素δ13C演变呈现两次大的旋回。

Characteristics of different types of anomalous pressure were documented.

分析了引起地层压力异常的原因,阐述了不同因素引起的压力异常的特征,介绍了测井预测地层压力的等效深度及综合计算2种方法,给出了计算结果与测试结果的对比数据。

Anticline: folds consisting of the oldest strata in the core and the youngest in the limb

背斜:核部由老地层、翼部由新地层组成的褶皱。

The limbs, they form an anticlinorium, otherwise, they are a.

反之,其中中央部位的次级褶皱组成的地层新于两侧次级褶皱组成的地层,则为复向斜。

According to the equation deduced by the author, the thickness of the strata and the relative sizes of the electromagnetic parameters in the media on the two sides of the bottom interface of the strata can be determined by measuring the frequency of the antinode.

测定波腹频率,就可以根据文中给出的推导方程,计算出地层厚度,以及地层底界面两侧介质电磁参数的相对大小。

Cased hole formation resistivity logging calculates apparent formation resistivity by measuring slight potential difference on metal casing,its measurement error of the apparent formation resistivity is decided by the measurement error of the potential difference on the casing.

过套管电阻率测井通过测量金属套管上的微小电位差来计算地层视电阻率,套管上电位差的测量误差决定了地层视电阻率的测量误差。

Put forward is a new method of skin effect correction based on function relationship between the real part of apparent conductivity against frequency and true formation conductivity in uniform formation condition.

根据均匀地层感应测井视电导率实部与频率和地层电导率的函数关系提出了一种双频率校正与归一化校正相结合的趋肤效应校正新方法。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

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也许他们将在壶穴里消失

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但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。