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- The way and principle of Gaussian curvature method for forecasting natural fracture zones in coal seam are discussed. 摘要论述了高斯曲率法预测煤层天然裂隙发育区的基本原理和方法。
- The character of the natural fracture development and nowaday earth stress affects not only hydraul... 油井射孔段天然缝产状、发育程度、水平应力大小直接影响着压裂施工压力。
- After analyzing 8 layers test data in 6 wells,we get the reservoir parameters of the nature fractured reservoir and the composite reservoir and the main fracture direction in this region. 经对该区 6口井 8层试井资料分析 ,得到裂缝型油藏 (包括宽而长的裂缝型油藏、压裂后形成长裂缝型油藏 )及复合型油藏参数 ,并确定了该区的主裂缝。
- When acid flow along the fracture, the wormhole was developed because some of rock pore or nature fractures are denuded by the acid, thus the filtrateloss of the acid mostly occurs in wormhole. 酸液在酸压裂缝内流动时,有少数较大的岩石孔隙或天然裂缝首先受到过量酸液的溶蚀而迅速增长形成蚓孔,使滤失主要在蚓孔内发生。
- It's only human nature to want a comfortable life. 想过舒适的生活不过是普通人的本性。
- Kang Y K, Ren W Q, Zhu Y B, et al.Method and practice of the extremum main curvity forecasting natural fracture zones [J].Well Testing, 2002, 11(4) : 22-26. [4]康义逵;任文清;朱用斌;等.;极值主曲率法预测天然裂隙发育带的方法与实践[J]
- It is concluded that the Gaussian curvature method can reflect the shape variation of coal seam curvature, and the method is effective to forecast natural fracture zones in coal seam. 分析表明，高斯曲率法可相对真实地反映煤层曲面形态变化，用该方法预测煤层天然裂隙发育区是切实可行的。
- All nature seemed pregnant with life. 整个大自然似乎充满了活力。
- Since natural fracture length is typically unobservable in subsurface data, we derive relationships that relate fracture length to aperture and spacing, both more readily measurable quantities. 由于天然裂缝的长度是典型的在地下数据是不可观的，我们得到相关孔穴的裂缝长度和间隙的关系，都更是随时可衡量的数量。
- He knows nothing of the nature of my work. 他一点也不了解我的工作性质。
- The girl is of a confiding nature. 这女孩具有轻信别人的性格。
- We enjoyed the beauty of nature. 我们欣赏大自然的美。
- Perhaps it is our human nature to be nostalgic. 也许是人类天生有一种思古之幽情。
- The three modes include tensional fracture along natural fractures,shear fracture along natural fractures and tensional fracture initiating from rock body. 确定水力裂缝在井壁处起裂的压力和方式,对水力压裂设计和施工有重要的作用。
- She had an eye for the beauty of nature. 她有鉴赏自然美的眼力。
- She hasn't much feeling for the beauty of nature. 她对大自然的美缺少鉴赏力。
- Her sad looks reflected the nature of her thoughts. 她面带忧伤显出心事重重。
- It is one of the strangest things in nature. 那可真是奇怪的东西之一。
- Nature seems to be wakened from a deep sleep. 大自然好像从沉睡中被唤醒。
