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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。
- 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。
- 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。
- 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。
- This paper analyzes the effect of natural fractures and artificial fractures on water flooding development in Xinzhao Oil Field. 摘要分析了储层天然裂缝和人工裂缝对新肇油田注水开发的影响；
- The model is established that fracturing fluid leakoff in coal bed with/without the reopened natural fractures, and its analytical solution is present. 建立了天然裂缝开启前、后的煤层压裂液滤失数学模型,给出了模型的解析解,并进行了计算分析,对于煤层压裂设计分析具有一定的实用意义。
- Fracture geometry of fractures induced by hydrofracturing is affected by the geostress and rock strength in their relative direction and where the natural fracture system is present or not. 油层水力压裂形成的裂缝形态与油层是否有天然裂缝和油层所受地应力及其相应方向的岩石抗张强度有关。
- The gas in shale might be mainly stored as absorbed gas on kerogen and clay-particle surfaces, or free gas in natural fractures and intergranular pores. 在页岩气藏中，气体主要是以吸附方式吸附在有机质和黏土颗粒的表面，或者以游离方式聚集在裂缝和孔隙中的。
- It is natural for a cat to catch mice. 猫捉老鼠是本能。
- The purpose of the horizontal wells was to enhance well productivity, reduce water and gas coning, intersect natural fractures and to improve well economics. 水平井的目的在于提高油井的产能，降低水气的锥进，沟通储层裂缝从而提高经济效益。
- It's natural to slack2 off towards the end of a hard day's work. 一天紧张工作快结束的时候有些放松是自然的。
- Many natural materials are becoming scarce. 许多天然原料越来越少。
- Our motherland flows with natural resources. 我们祖国蕴藏着丰富的天然资源。
- GURPINAR O,KALBUS J,LIST D F.Numerical modeling of a large,naturally fractured oil complex[R].SPE 59061,2000. 聂立新黄炳家.;各向异性天然裂缝油藏裂缝方位的确定[J]
- Events took their natural course. 事态依自然进程发展。
- She has a natural wave in her hair. 她的头发自然卷曲。
- Magnetism is a natural phenomenon. 磁力是一种自然现象。
