摘要
以顶底不渗透边界的低渗透气藏为例,在直井的基础上,推导了非达西效应的大斜度并稳产模型。分析了高速非达西效应、井斜角、储层损害引起的真表皮系数等因素对斜井产能的影响,做出了相应的流入动态关系曲线;将斜井与直井进行了产能对比,为大斜度井的产能评价和合理配产提供了理论依据。
Take low penneability gas reservoirs with top-bottom no-flow boundary as example,based on vertical well, model of maintaining productivity of high angle deviated well with non-Darcy effect are derived.The effect of high-speed non-Darcy effect,hole angle,true skin coefficient S_d caused by formation damage on the productivity of the inclined wells is analyzed;the corresponding IPR curves are worked out;the productivity of inclined well and vertical well is compared, which provides the theoretical basis for the deliverability evaluation and proper allocation of high-inclination well.
出处
《吐哈油气》
2010年第4期367-371,共5页
Tuha Oil & Gas
关键词
大斜度井
稳产模型
高速非达西效应
井斜角
产能对比
high-inclination well
maintaining productivity model
high-speed non-Darcy effect
hole angle
deliverability comparison
