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- FRACTURE TOUGHNESS IN HYDRAULIC FRACTURE PROPAGATION 水力裂缝延伸过程中的岩石断裂韧性
- hydraulic fracture propagation 水力裂缝延伸
- ANALYSIS AND APPLICATION ON FRACTURE PROPAGATION DIRECTION OF HYDRAULIC FRACTURING 水力压裂缝延伸方向分析及其应用
- Keywords hydraulic fracturing;salutatory barrier;fracture propagation;normal stress difference;pay zone;fracture toughness;experimental study; 水力压裂;突变体;裂缝延伸;法向应力差;产层;断裂韧性;实验研究;
- Studies on hydraulic fracture of high concrete gravity dam were carried out with the interface model developed. 同时，利用所建立的考虑缝面水压的接触面模型对高重力坝坝踵水力劈裂展开了初步研究。
- The borehole falling and hydraulic fracture during drilling have a close relation with the distribution of stress field. 钻井过程中井眼跨塌、水力压裂裂缝的形成与应力场的分布有十分密切的关系。
- It is well known the there is a great effect on the fracture promulgation and shapes by property of fracture fluid in the hydraulic fracture during the hydraulic operations. 在水力压裂过程中,缝内流体的流动特征对裂缝的延伸和形态具有很大的影响。
- The dimensionless net pressure, difference of Yang’s modulus and fracture toughness between reservoir and salutatory barrier also affected the behaviors of hydraulic fracture. 产层与突变体之间的弹性模量差异、断裂韧性差异以及缝内净压力无因次量是影响裂缝走向的重要因素。
- During fracture propagation driven by detonation gas in oil well, dynamic response of crack surface under the gas pressure results in fast fracturing. 摘要油井爆生气体对岩石劈裂作用过程，是裂缝面对动态荷载响应并使其发生动态扩展的过程。
- Actually, hydraulic fracture technology has now matured at abroad and home, but the approach of quality control over the field construction of technology needs further perfecting. 在国内外,水力压裂工艺目前已经非常成熟,但工艺现场施工这个环节的质量控制手段还有待进一步的完善。
- During fracture propagation driven by detonation gas in oil well,dynamic response of crack surface under the gas pressure results in fast fracturing. 油井爆生气体对岩石劈裂作用过程,是裂缝面对动态荷载响应并使其发生动态扩展的过程。
- The paper sequentially analyzed the starting-crack mechanism of hydraulic fracture bore which lies in coal delamination or lies between two coal delaminations or through many coal delaminations. 进而论文分析阐述了煤分层中钻孔、分层层面钻孔、以及穿层钻孔水力压裂的起裂机理。
- The process of hydraulic fracture connection and solution mining is a complicated course, which involves hydraulic fracture expanding, convection, pervasion, quality and heat passing and so on. 对水压致裂连通溶解开采的过程及机理 ,在理论上进行了一定的分析 ,其内容主要包括 :岩盐矿层内水力裂缝的起裂扩展、盐矿物的溶解等。
- At the tip end of fracture,there is very high stress and dilatancy occurs during hydraulic fracturing. 水力压裂中,由于缝内压力平衡了水平地应力,形成了产生压胀的条件,已经是石油界公认的事实。
- How to handle uncertain and moveable boundaries of a fracture is one of the key issues that is faced by the Full Three Dimension Hydraulic Fracture Numerical Simulation Technique(FTDHFNST). 处理任意形状且属于运动的裂缝边界是全三维水力压裂数值模拟技术所面临的技术难题之一。
- Frac and pack technique is a combination of hydraulic fracturing andgravel packing.It can control fracture geometry to get"wide and shortfracture". 压裂防砂技术将压裂增产与充填防砂方法相结合,在油层形成短而宽的填砂裂缝,能够起到增产与防砂的双重效果。
- A new method for calculation of fracture propagation 一种新的断裂计算方法
- But hydraulic fracturing can also produce debate and anger over the risk of groundwater pollution. 但是，水力压裂也可导致对地下水污染风险的争议以及愤怒。
- Fracturing pressure in formations was the basic data for designing mud weight,well profile and hydraulic fracturing. 地层破裂压力是钻井液密度确定、井身结构和压裂设计施工的基础数据。
- It is necessary to predict hydraulic fracture height for providing pumping pressure increment and fracturing pressure reference value. 摘要为了给压裂施工提供合理的泵压增量及地层破裂压力参考值，需要预测压裂裂缝的高度。
