| 1. | Relationship between physical and mechanical parameters and acoustic wave velocity of coal measures rocks
煤系岩石物理力学参数与声波速度之间的关系 |
| 2. | A new method using reference layer and adjusting acoustic velocity for calibrating thin reservoir was proposed
提出以参考层为标准，并对声波速度进行微调的薄储层的标定方法。 |
| 3. | It works on the principle that the speed of sound changes with temperature , i . e . sound travels faster in warm air than in cold air
它利用声波速度会随温度改变的原理运作，即是声波在暖空气中传送较在冷空气中为快。 |
| 4. | It works on the principle that the speed of sound changes with temperature , i . e . sound travels faster in warm air than in cold air
它利用声波速度会随温度改变的原理运作，即是声波在暖空气中传送较在冷空气中为快。 |
| 5. | The effects of observing scale on the measurements of acoustical velocity were studied by ray theory and equivalent medium theory
分析了声波频率影响传播速度的机理，给出了不同温度不同压力条件下声波速度随频率变化关系的实例。 |
| 6. | Based on the relationship between elastic constants and sound velocities in composite material and measuring very few velocities of different propagation direction , the elastic constant matrix can be calculated out
依据复合材料中声波速度与材料弹性常数之间的本构关系，测量不同传播方向的少数几个声速，就可以得到其弹性常数矩阵。 |
| 7. | The results of well - to - seismic calibration are effective by selecting permian igneous rock and carboniferous double - peak limestone as the reference layers , adjusting appropriately acoustic velocity and choosing the most suitable wavelet
利用上述方法，以哈得四油田二叠系火成岩及石炭系双峰灰岩为参考层，选取与研究区地震数据吻合性最好的子波，合理地调整声波速度，对哈得四油田的主要储层东河砂岩进行井震标定，获得了较为理想的效果。 |
| 8. | ( 5 ) discovered a abnormal law that the sonic velocity was enlarged with increasing of die core porosity in the sandstone reservoir of the haojiagou formation in triassic , and gave a geologic interpretation about the phenomenon . it was helpful to convert the sonic velocity into die porosity correctly in reservoir . ( 6 ) gave a primary reason for producing a little oil and gas in the well ha - 2 and ha - 3 of the sidaogou structure
通过取心段地层岩性与声波测井速度分析，首次发现郝家沟组储层段岩芯孔隙度与声波时差(声波速度)存在反常变化规律，并对这种现象进行了较合理的地质解释；提出了储层预测中应注意的问题，首次提出在本区按常规方法利用声波时差换算孔隙度存在陷阱。 |
| 9. | Through the statistic and analysis of rock core crack , sonic wave velocity test , microcosmic structure of core slice observation by electron microscope , core strength test to the sampled damaged slope rock mass , it indicates that the damage degree of smooth blasting to slope rock mass has no obvious relation with blasting scale but with the line density of explosive filling and the strength of the rock in damaged area decreases evidently
通过受损边坡岩体取样岩芯裂隙的统计分析、声波速度测试、岩芯切片微观结构的电镜观察及岩芯的强度试验，发现光面爆破对边坡岩体的损伤程度与爆破规模无明显关系，而与光爆孔的线装药密度有关，损伤区岩石的强度明显降低。 |
| 10. | In order to calibrate properly the thin reservoir of hd4 oilfield with acoustic velocity , based on the theory of well - to - seismic calibration , the influence of the dominant frequency , kind and phase of the wavelet , and acoustic velocity on the synthetic traces was analyzed , moreover , the differences between interval velocity from stacking velocity and acoustic velocity were discussed
为了利用声波速度对薄储层进行有效的井震标定，从井震标定的原理出发，以哈得四油田的井震标定为例，分析了标定过程中子波的主频、类型和相位及声波速度对合成地震道的影响，同时分析了声波速度与叠加速度转换的层速度之间的差别。 |
