CAJ | 학술논문

为指导致密油藏的勘探与开发，以鄂尔多斯盆地陇东地区长7致密砂岩储层为例，基于应力敏感实验，开展了地层孔隙度、渗透率随净上覆压力变化规律研究。实验结果表明，随着净上覆压力不断增加，地层孔隙度和渗透率都有不同程度减小，但减小幅度不同。一元二次方程能较好地描述孔隙度、渗透率随净上覆压力的变化关系，由此建立的孔隙度、渗透率计算模型能有效弥补室内实验的有限性和局限性，为油田的勘探开发提供依据。
위지도치밀유장적감탐여개발，이악이다사분지롱동지구장7치밀사암저층위례，기우응력민감실험，개전료지층공극도、삼투솔수정상복압력변화규률연구。실험결과표명，수착정상복압력불단증가，지층공극도화삼투솔도유불동정도감소，단감소폭도불동。일원이차방정능교호지묘술공극도、삼투솔수정상복압력적변화관계，유차건립적공극도、삼투솔계산모형능유효미보실내실험적유한성화국한성，위유전적감탐개발제공의거。
In order to better guide exploration and development of the tight oil reservoir,based on the stress sensitive experi-ment,this article took the Chang7 tight sandstone reservoir as an example and carried out studies on changes in porosity and per-meability with the net overburden pressure in Longdong area of Ordos Basin.The experimental results showed that with the in-crease of the net overburden pressure,formation porosity and permeability decreased in different degree,but the decreased range was different.A quadratic equation can be used to describe the variation relationships in porosity and permeability with the net o-verburden pressure,and the established model for calculating porosity and permeability can compensate for the finiteness and limitations of laboratory experiments effectively and provide basis for the oilfield exploration and development.