体积压裂水平井复合流动模型

doi:10.7623/syxb201403012

石油学报 ›› 2014, Vol. 35 ›› Issue (3): 504-510.DOI: 10.7623/syxb201403012

体积压裂水平井复合流动模型

苏玉亮, 王文东, 盛广龙

中国石油大学石油工程学院山东青岛 266580

收稿日期:2013-11-14 修回日期:2014-02-26 出版日期:2014-05-25 发布日期:2014-04-11
通讯作者: 盛广龙，男，1990年2月生，2013年毕业于中国石油大学（华东）石油工程专业，现为中国石油大学（华东）油气田开发工程专业硕士研究生，主要从事低渗透油藏渗流机理研究。Email：shengguanglong2009@163.com
作者简介:苏玉亮，男，1970年9月生，1992年毕业于石油大学（华东）采油工程专业，2005年获西安交通大学博士学位，现为中国石油大学（华东）教授、博士生导师，主要从事低渗油藏驱替机理及开采、注气提高采收率、深水油气田开发等方向研究。Email：suyuliang2002@163.com
基金资助:
国家重点基础研究发展计划（973）项目（2014CB239103）、长江学者和创新团队发展计划项目（IRT1294）、中央高校基本科研业务费专项资金项目（13CX06030A）资助。

Compound flow model of volume fractured horizontal well

Su Yuliang, Wang Wendong, Sheng Guanglong

School of Petroleum Engineering, China University of Petroleum, Qingdao 266580, China

Received:2013-11-14 Revised:2014-02-26 Online:2014-05-25 Published:2014-04-11

摘要/Abstract

摘要：

基于体积压裂水平井复杂裂缝改造特点及流动特征，构建了耦合双重介质复合流动模型，应用Laplace变换和Stehfest数值反演，得到了定产和定压条件下封闭边界裂缝的井底压力和水平井产量半解析解。在模型正确性验证的基础上，结合陇东致密油储层特征参数着重研究了体积压裂缝网参数对产量的影响。模型研究结果表明：缝网改造带宽越大，体积压裂水平井单井产能越高，缝网区域渗透率对初期产量影响较大；水平井体积压裂优化设计应同时兼顾单条裂缝改造体积和裂缝条数的关系。实例计算结果表明压裂改造带宽不宜过大，采用多裂缝、小带宽的压裂方案增产效果最好。该研究结果对致密储层水平井体积压裂设计具有一定的指导意义。

关键词: 体积压裂水平井, 复合流动模型, 缝网改造带宽, 产能计算, 优化设计

Abstract:

Based on reconstrcution characteristics and flow feature of fracture network of volume hydraulic fracture horizontal well, this paper establishs compound flow model coupling double porosity model, applying Laplace transform and Stehfest numerical inversion, and obtains the formulas of bottom hole pressure and horizontal well production under the constant output and pressure for the single fracture in closed boundary.On the basis of model validation,this paper researchs the influence of parameters of fracture network on production. It is shown that the longer of band width, the higher the cumulative oil production and the permeability of fracture network has a great influence on production. Interference between fractures number and single fracture stimulate volume should be considered when optimizing design for horizontal well and the analysis results shows that the plan with more fracture numbers is better.The results of the study supplies striking influences for the plan of fracture network in the tight oil reservoir.

Key words: volume fractured horizontal well, compound flow model, fracture network band width, productivity calculation, optimization design

中图分类号:

TE357.1

苏玉亮, 王文东, 盛广龙. 体积压裂水平井复合流动模型[J]. 石油学报, 2014, 35(3): 504-510.

Su Yuliang, Wang Wendong, Sheng Guanglong. Compound flow model of volume fractured horizontal well[J]. ACTA PETROLEI SINICA, 2014, 35(3): 504-510.

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体积压裂水平井复合流动模型

Compound flow model of volume fractured horizontal well

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