超短半径水力水平井产能计算方法及影响因素分析  

A Computation Method for Productivity of Super-Radius Hydraulic Horizontal Wells and Analysis of Factors on It

作　　者：席长丰[1] 江山[1] 马卫国[2] 胡强法[2] 

机构地区：[1]江汉石油学院地质系,湖北荆州434023 [2]江汉机械研究所,湖北潜江433100

出　　处：《石油钻探技术》2004年第1期48-50,共3页Petroleum Drilling Techniques

摘　　要：水力水平钻井射孔深度一般可达到8～20m,井眼尺寸达70mm以上。采用水力水平钻井技术可实现井筒与地层闻的有效连通,形成极小转向半径的微型水平井,有效穿透近井带污染层;一次下井可在不同深度或同一深度的不同方位完成多次钻孔作业,形成多个水平井眼。运用水力水平井技术的目的是提高油气藏的采收率以及为油田增产增注服务,但是由于其成本较高,并不是所有的油田都适用。通过油藏工程的方法,以产能为主线,利用水力水平井与直井的产能比具体分析了径向水平井产能影响因素分析及其适应的地质条件。The hole length made by super-radius horizontal drilling can come up to 8-20m, and the hole diameter of it is more than 70mm. Employing this drilling technique, many operations can be accomplished, including penetrating through polluted reservoirs near wellbores, forming minimum diverting-radius short horizontal wells, connecting wellbores with the reservoirs more effectively, making one or more horizontal well holes in the same depth or different depth during one trip. The purpose of applying the technical is to enhance recovery efficiency of reservoirs. However, not all the reservoirs are suit for it due to its high expenditures. In this article, the productivity ratio of horizontal and vertical wells is calculated, at the same time, the effected factors on productivity and geological conditions fit for waterpower horizontal well are analyzed.

关 键 词：水平井 产能 计算方法 射孔深度 地层厚度 生产能力 表皮系数 各向异性 渗透率 

分 类 号：TE323[石油与天然气工程—油气田开发工程]