不同岩性火山岩力学性质实验研究

MECHANICS PROPERTIES EXPERIMENT STUDY OF DIFFERENT VOLCANO ROCK

黄沙坨地区位于辽河断陷盆地东部凹陷中段,古近纪沙河街组第三段沉积时期发育了巨厚的火山岩,为该区形成火山岩油气藏奠定了成藏条件。由于油层岩石的力学性质,影响着油田生产,因此,经过实验室对不同岩性的火山岩力学性质的试验测试,得到油田生产所需的相关的力学参数及相关的地质信息,为油田勘探、开发及相关的工程设计发挥重要作用。试验结果表明,粗面岩以张性破裂为主,玄武岩以剪切破裂为主。这对油田研究水力压裂裂缝形态及储层天然裂缝形态提供了重要的地质依据。软化系数的较大波动,表现出地下流体对油层岩石的环境作用。

The Huangshatuo region locates the middle segment of eastern region of the break and sink basin of Liaohe, Cenozoic era three period growth thick volcano rock, and the conditions of forming volcano rock oil-gas reservoir are established. Because oil-gas reservoir mechanics, affect the oil-field produce,therefore, by mechanics properties experiment study of different volcano rock in laboratory, and get the related mechanics parameter and related geology information that oil-field need when producing, and take important role in exploring, developing for oil-gas field and the related engineering design. The result show that coarse rock fracture is mainly tense failure, basalt basaltic rock fracture is mainly shear failure. This study provides the important geology basis for oil-fields the hydraulic fracture technique and the reservoir natural crack according to soften coefficient fluctuates and show underground fluid to oil reservoir rocky environment action.