西南石油大学学报(自然科学版)

• 石油与天然气工程 • 上一篇    下一篇

砾石充填防砂对稠油井产能影响研究

司连收1,2,李自安1,张健3   

  1. 1. 中国科学院广州地球化学研究所,广东广州510640
    2. 中国科学院研究生院,北京石景山100049
    3. 中国石化胜利油田现河采油厂,山东东营257068
  • 出版日期:2013-10-20 发布日期:2013-10-20

Influence of Gravel Packing Sand Control on the Productivity of Heavy
Oil Well

Si Lianshou1,2, Li Zi’an1, Zhang Jian3   

  1. 1. Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou,Guangdong 510640,China
    2. Graduate University of Chinese Academy of Sciences,Shijingshan,Beijing 100049,China
    3. Xianhe Oil Production Plant of SINOPEC Shengli Oilfield Company,Dongying,Shandong 257068,China
  • Online:2013-10-20 Published:2013-10-20

摘要:

针对前人在稠油开采过程中模型复杂,防砂对稠油开采带来的附加影响严重问题,展开了砾石充填防砂研
究。建立了防砂井流动模式及产能预测模型。在常规套管射孔井的预测基础上,附加考虑了这些区域的流动阻力和
表皮问题,形成了砾石充填油井的产能预测模型。对砾石层渗透率压降影响分析表明:炮眼砾石层压降随砾石渗透率
的增大而降低,随着原油黏度的增高,炮眼压降增大,油井产能会大大降低,而原油黏度特别大的油井,会出现充填防
砂后供液不足的情况。研究认为:选择适当尺寸的充填砾石,在防砂施工过程中避免砾石破碎,从而保持较高的渗透
率,有利于充填防砂井获得较高的产能。对指导出砂井的稠油开发具有重要意义。

关键词: 防砂, 砾石充填, 压力降, 产能预测, 稠油油藏

Abstract:

Aimed at the complex models in heavy oil performance history and its attached affections in sand control,the gravel
pack mechanism is studied in this paper. The productivity predicting models and the flow model of the sand control well was
established. Based on the conventional perforated casing productivity prediction,the regional flow drag force and skin factors
were considered. The pressure loss mainly occurs in the perforations. The pressure drop is analyzed by case study,which proved
that the permeability of the packed gravel,oil viscosity and perforation parameters are the key factors to affect the productivity
of gravel-packed wells. Oil well productivity can be improved with high-density and big diameter hole perforating technology
in the gravel-packed well in heavy oil reservoir.

Key words: sand control, gravel pack, productivity prediction, pressure drop, heavy crude reservoir