大斜度井产能计算模型建立及分析  

Productivity Calculation Model and Sensitive Parameters Analysis in Highly Deviated Well

作　　者：张建国[1] 

机构地区：[1]中国石化集团国际石油勘探开发有限公司,北京100029

出　　处：《重庆科技学院学报（自然科学版）》2016年第2期59-61,71,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项"中东中亚富油气区大型项目勘探开发关键技术"(2011ZX05031)

摘　　要：针对大斜度井产能评价模型进行研究。首先基于势理论、微元线汇原理和镜像反映原理,建立大斜度井油藏渗流模型;同时,综合考虑流体在大斜度井筒中流动时存在的摩擦压降、加速度压降及重力压降,建立起井筒流动模型。最后对模型进行耦合求解,定量分析不同敏感参数对大斜度井产能的影响。研究结果表明:大斜度井产能随着渗透率的增大而提高;大斜度井产能在一定范围内随着生产段长度加长而提高,但由于井筒内压降的存在,生产段超过一定长度后单位长度增产能力降低;大斜度井随着井斜角增加近似为一口直井,随着井斜角的减小而趋向于一口水平井,大斜度井产能随着井斜角的加大而减小。This thesis focues on productivity calculation for highly deviated well. On the basis of potential theory,infinitesimal method and image method,mathematical model of fluid flow in near wellbore zone of highly deviated well was set up. Meanwhile,a coupling flow model which takes pressure drop（ frictional pressure drop,liquid acceleration pressure drop,gravity pressure drop） impact into account is established. The quantitative analysis of the sensible parameters is also conducted. The results show that the productivity of the deviated well increased as the permeability increased. The productivity of the deviated well increased as the length increased,but the increment of unit length is decreased. As the deviation angle increased,the deviated well approximately likes a straight well.As the deviation angle decreased,the deviated well approximately likes a horizontal well. The productivity of the deviated well decreased as the deviation angle increased.

关 键 词：大斜度井 产能计算 耦合模型 

分 类 号：TE243[石油与天然气工程—油气井工程]