巴肯致密油藏单井产能参数影响程度排序  

Influence factors of single well’s productivity in the Bakken tight oil reservoir

作　　者：梁涛[1] 常毓文[1] 郭晓飞[1] 刘保磊[1] 吴剑[1] 

机构地区：[1]中国石油勘探开发研究院

出　　处：《石油勘探与开发》2013年第3期357-362,共6页Petroleum Exploration and Development

基　　金：国家科技重大专项(2008ZX05043-002)

摘　　要：为了快速准确地找出水平井压裂设计和施工过程中的关键影响因素,有效提高产能,针对巴肯致密油藏特点,采用信息量分析、灰色关联、正交试验设计3种方法对巴肯致密油藏压裂水平井产能参数的影响程度进行了计算与检验,确定各参数之间的关联性及各参数对产能的影响程度。结果表明:压裂级数、缝长、水平井段长度和渗透率是影响巴肯致密油藏压裂水平井产能的主要参数,而地层压力、孔隙度、缝宽和地下原油黏度为次要影响参数。可从对产能具有显著影响的可控因素入手,有效提高巴肯致密油藏压裂水平井的产能。使用3种方法得到的影响程度排序结果相似性较高,说明这3种方法有较强的实用性和一致性,均是计算和检验致密油藏压裂水平井产能参数影响程度的有效方法。To find out key factors of productivity enhancement quickly and precisely in design and operation of horizontal well fracturing, three methods including, information amount theory, gray correlative method and orthogonal experimental design, were used to calculate and check the productivity parameters of fractured horizontal wells in the Bakken tight oil reservoir, so as to identify their correlations and influences on productivity. The results reveal stages of fracturing, fracture length, horizontal section length and permeability as primary parameters, and formation pressure, porosity, fracture width and subsurface oil viscosity as secondary parameters The controllable parameters should be considered firstly. Similar influences are obtained from these three methods, indicating that they are extremely practical and consistent. Therefore, all three methods are effective to calculate and check the influences of fractured horizontal wells＇ productivity parameters in tight oil reservoirs.

关 键 词：巴肯致密油藏 压裂 水平井 产能 影响程度 信息量分析 灰色关联 正交试验设计 

分 类 号：TE349[石油与天然气工程—油气田开发工程]