石油勘探与开发 >

2019 , Vol. 46 >Issue 5: 981 - 992

DOI: https://doi.org/10.11698/PED.2019.05.18

石油工程

基于多井模型的压裂参数-开发井距系统优化

  • 王军磊 ,
  • 贾爱林 ,
  • 位云生 ,
  • 贾成业 ,
  • 齐亚东 ,
  • 袁贺 ,
  • 金亦秋
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  • 中国石油勘探开发研究院,北京 100083
王军磊（1986-）,男,山东文登人,博士,中国石油勘探开发研究院工程师,主要从事渗流力学理论、非常规天然气生产动态分析及页岩气地质工程一体化研究。地址：北京市海淀区学院路20号,中国石油勘探开发研究院气田开发研究所,邮政编码：100083。E-mail：wangjunlei@petrochina.com.cn

收稿日期: 2018-09-27

  修回日期: 2019-02-19

  网络出版日期: 2019-09-17

收起

Optimization workflow for stimulation-well spacing design in a multiwell pad

  • WANG Junlei ,
  • JIA Ailin ,
  • WEI Yunsheng ,
  • JIA Chengye ,
  • QI Yadong ,
  • YUAN He ,
  • JIN Yiqiu
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  • Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China

Received date: 2018-09-27

  Revised date: 2019-02-19

  Online published: 2019-09-17

Supported by

国家科技重大专项（2016ZX05037,2017ZX05063）; 中国石油天然气股份有限公司重大科技专项（2016E-0611）

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摘要

以变缝宽导流裂缝为基本流动单元,建立考虑井间干扰和缝间干扰的多水平井渗流数学模型,采用半解析方法求解模型,模拟多井开发平台全生命周期生产动态,分析裂缝长度、裂缝导流能力、井距、缝距等因素对生产效果的影响。在此基础上提出了以压裂规模为内部约束条件,以经济效益为外部约束条件的“嵌套式”全局优化方法来优化水平井-裂缝等钻完井参数。研究表明,不考虑约束条件时,增加裂缝与地层接触面积、降低缝/井间干扰强度、平衡裂缝与地层流入流出关系均能有效提高平台开发效果,但不存在最优钻完井参数。仅考虑内部约束条件时,存在最优裂缝导流能力和长度,但不存在最优井距、缝距。同时考虑内外部约束条件时,裂缝导流能力、裂缝长度、井距、缝距等因素间产生关联,出现参数优化空间,在压裂规模较小时宜采用小井距、宽缝距、短裂缝的水平井部署模式;在压裂规模较大时则宜采用大井距、窄缝距、长裂缝的部署模式。图14参28

关键词： 水平井; 多段压裂; 裂缝导流能力; 裂缝长度; 井距; 缝距; 参数优化

本文引用格式

王军磊 , 贾爱林 , 位云生 , 贾成业 , 齐亚东 , 袁贺 , 金亦秋 . 基于多井模型的压裂参数-开发井距系统优化[J]. 石油勘探与开发, 2019 , 46(5) : 981 -992 . DOI: 10.11698/PED.2019.05.18

Abstract

A flow mathematical model with multiple horizontal wells considering interference between wells and fractures was established by taking the variable width conductivity fractures as basic flow units. Then a semi-analytical approach was proposed to model the production performance of whole life cycle in well pad and to investigate the effect of fracture length, flow capacity, well spacing and fracture spacing on ultimate recovery (EUR). Finally, a workflow of nested optimization with economic profit as the outer constraint and fracturing scale as inner constraint was developed to optimize drilling and completion parameters of the horizontal well fracturing. The results show that, when the constraint conditions aren’t considered, increasing contact area between fracture and formation, reducing interference between fractures/wells, balancing inflow and outflow between fracture and formation all can effectively improve the development effect of the well pad, but there are no best drilling and completion parameters. When only the inner constraint condition is considered, there exists the optimal fracture flow capacity and fracture length. The fracture flow capacity and fracture length, well space, fracture space are correlated when considering both inner and outer constraints for parameter optimization. Small well space, wide fracture space and short fracture should be adopted when the fracturing scale is small. When the fracturing scale is large, big well space, small fracture space and long fracture should be used.

Key words： horizontal well; multi-staged fracturing; fracture flow capacity; fracture length; well space; fracture space; parameters optimization

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