The condition of natural fracture closure was adaptable in the model.
该模型也同样适用裂缝自然闭合的情况。
Natural fracture system is a fractal system, and an actual model can be built up by means of fractal theory.
天然裂缝系统是一个分形体系，可用分形理论建立裂缝分布的实际模型。
The example analysis shows the utmost containment of natural fracture decreases while approaching Angle increases.
分析表明逼近角越大，天然裂缝对压裂液的极限容量越小。
For Coal Bed Methane (CBM) production, the pore passage must be established between natural fracture and well bore.
开采这种气体必须在煤层的天然裂缝与井筒之间建立起有效的连通孔道。
The way and principle of Gaussian curvature method for forecasting natural fracture zones in coal seam are discussed.
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 influence of the natural fracture and the nowaday earth stress field on the hydraulic fractures was analyzed emphatically.
天然缝发育特征、现今应力场特征不但决定了水力缝分布特征，而且直接影响着压裂施工；
Abstract: in the process of water injection development, the water breakthrough of natural fracture has strong universality and directivity.
摘要：油田注水开发过程中，天然裂缝水窜具有强烈的普遍性和方向性。
Strike - dip, development degree and horizontal stress of the natural fracture in oil well perforated intervals affects operated fracturing pressure directly.
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。
There are a variety of formation mechanisms for the natural fractures in reservoirs. The fracture distributions produced by different mechanisms are not the same.
储层天然裂缝形成机制多种多样，不同机制产生的裂缝分布不尽相同。
Since natural fracture surfaces in rocks rarely display self-similar property, the estimated fractal dimension of surface roughness surffers from the scale effect.
然而，岩石断裂表面粗糙度一般不具有自相似分形性质。
The reservoir in upper Paleozoic of North-Dingbian block has the characteristics of low porosity, tight, high temperature, natural fracture and low natural production.
定北区块上古生界储层具有低孔、致密、高温、天然裂缝发育、基本无自然产能等复杂特征。
Because there are many natural fractures in Fulin Sag and the fracture liquids seriously lose, the fracturing effect is not ideal by using the fracturing and oil testing technology.
富林洼陷前期的压裂试油工艺，由于天然裂缝较发育，压裂液滤失大，压裂效果不理想。
The results show that the natural fracture length and dip angle have great influence on the casing failure, and the increase of casing wall thickness could not reduce casing failure.
分析结果表明：天然裂缝长度和倾角对套损有较大影响，但增加套管壁厚不能缓解套损。
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。
Natural sinkholes generally form when heavy, water-saturated soil causes the roof of an underground limestone cavity to collapse, or when water widens a natural fracture in limestone bedrock.
一般自然灰岩坑形成机理是由于有份量的水饱和土导致地下石灰岩洞顶层坍塌，或者由于水加宽了石灰岩床的天然裂缝而导致。
Concerns have been raised in many countries about the safety of fracking, a technique in which high-pressure fluids are pumped into shale to fracture the rock and force out natural gas.
许多国家都对水力破裂法的安全性表示担心，这种技术是把高压液体注入页岩致岩石破裂从而挤出其中存储的天然气。
The wings of the fracture extend away from the wellbore in opposing directions according to the natural stresses within the formation.
按照地层内的天然应力，裂缝的翼部沿相反方向从井筒向外延伸。
This paper evaluates the surplus service life of the liquefied natural gas tank by analysis of fracture mechanics, and offers the basis for the safety assessment of welding defects of the gas tank.
文对卧式液化储气罐的焊接缺陷用断裂力学的分析方法，评定了其剩余使用寿命，对大修中储气罐焊接缺陷的安全评定提供了依据。
Compared to the alumina beads, it has a higher fracture toughness and lower hardness. It is an economic ceramic bead to replace Kaolin bead, silica sand and other natural grinding media.
相比传统的氧化铝微珠，具有更高的断裂韧性和较低的硬度，是一种代替高岭土球、河砂和铁粒等天然材料研磨介质的经济型和实用型的陶瓷珠。
Along with the increase of age, its fracture toughness grows, and the elevated range is in accordance with the natural aggregate concrete basically;
再生混凝土断裂韧度随龄期的增加而提高，提高的幅度与天然骨料混凝土基本一致，其趋势在增加；
It will act as an important effect to take rectangular pattern for improving recoverable reserves, recovery factor of natural gas if the orientation of hydraulic fracture has been defined.
在确知水力裂缝方位的情况下，采用相应的矩形方式布井将会对提高可采储量和天然气的采收率起重要作用。
Because of the natural gas transfer pip bursting fracture is polluted, the breaking quality can' t be judged dircctly.
天然气管道爆裂断口由于被污染，不能直接判断断口的性质。
Ice damage under natural conditions showed various forms of fracture model.
自然条件下冰的破坏表现为各种形式的断裂。
While in material of natural bone group, fracture line disappeared after 8 weeks with dense bone callus at the site of bone defects, and by 12 weeks bone marrow still not recanalized.
而单纯支架组8周骨折线消失，缺损处有大量骨性骨痂包绕，12周骨皮质连续，骨塑形较差，髓腔未通。
The gold is less evenly distributed in the ore in forms of natural gold and silver-gold, and occurring state are intergranular gold and fracture gold.
金矿物有自然金和银金矿，在矿石中分布很不均匀，以粒间金和裂隙金为主要赋存形式。
The gold is less evenly distributed in the ore in forms of natural gold and silver-gold, and occurring state are intergranular gold and fracture gold.
金矿物有自然金和银金矿，在矿石中分布很不均匀，以粒间金和裂隙金为主要赋存形式。
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