摘要
压裂水平井的产能受到地层参数和压裂参数的双重影响,在开发过程中需要确定各个参数对压裂水平井产能的影响规律和主次关系,本文基于特低渗透油藏参数进行了压裂水平井产能影响因素的数值模拟研究。研究结果表明:压裂水平井的增产倍数随着地层渗透率和油层厚度的降低而增加,而垂向渗透率大小对压裂水平井产能的影响并不大;对于裂缝参数,压裂水平井的产量和裂缝产量比重随着裂缝导流能力、裂缝半长以及裂缝条数的增加而增加;由于裂缝间的干扰和泄油面积的不同,水平井两端的裂缝产量要大于中间裂缝的产量;地层的储集能力仍然是决定压裂水平井绝对产能的主控因素。而从裂缝参数角度考虑,裂缝半长对压裂水平井绝对产能的影响最大,其次是裂缝导流能力,而裂缝条数的影响并不大。
The deliverability of fractured horizontal well is affected by formation and fracture parameters,and it is necessary to determine the affecting characteristics of each parameter and their co-action effect.This paper used numerical simulation to study them based on ChangQing Oilfield background.The study shows that the productivity multiplier of fractured horizontal well increased with the decline of formation permeability and thickness and the vertical permeability do not affect the deliverability much;the fractured horizontal well deliverability upraises with the increase of fracture conductivity,fracture half-length and fracture number;the end fractures output are greater than the middle fractures;parameter rank affecting the fractured horizontal well deliverability in ChangQing Oil-field are also determined.
出处
《新疆石油天然气》
CAS
2013年第3期62-65,71,共5页
Xinjiang Oil & Gas
关键词
特低渗透油藏
压裂水平井
产能
裂缝参数
正交试验设计
ultra-low permeability reservoir
fractured horizontal well
deliverability
fracture parameters
orthogonal design
