摘要
在火山岩地层压裂施工中,由于天然裂缝的影响,人工裂缝的扩展有别于均质地层。为此,引入了模量因子、漏失因子和尖端因子,在均质油藏的理论基础上,建立了大庆外围火山岩地层人工裂缝延伸的物理、数学模型,对施工中出现的多裂缝、天然裂缝漏失和尖端效应等进行了描述。经过实际计算表明,3个因子可以解释施工曲线的变化,描述裂缝的扩展规律,对指导压裂施工、火山岩油气藏的开发具有重要意义。
During Fracturing in volcanic reservoir,the difference between volcanic reservoir and homogeneous reservoir is great,because of natural fissures.Some new concepts are presented on the basis of homogeneous reservoir,such as tip factor,leak factor,and modulus factor.A physics model and mathematics model are presented,respectively,to describe multi-fractures,leakage and tip effect.Using fitting technique for treating pressure and these factors,the mechanism of fracture extending and the parameters of fractures can be described. The result shows that the three factors can explain the changes of construction curve and reflect the law of fracture extending.Therefore,three factors are important for the improvement of massive fracturing treatment and development of volcanic reservoir.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第z1期2236-2240,共5页
Chinese Journal of Rock Mechanics and Engineering
关键词
断裂力学
压裂
施工曲线
多裂缝
尖端效应
fracture mechanics
fracturing
construction curve
multi-factures
tip effect
