• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of natural gas science and engineering >A study on casing deformation failure during multi-stage hydraulic fracturing for the stimulated reservoir volume of horizontal shale wells
【24h】

A study on casing deformation failure during multi-stage hydraulic fracturing for the stimulated reservoir volume of horizontal shale wells

机译：水平页岩井增产水力多阶段水力压裂过程中套管变形破坏研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Volume fracturing technique has effectively helped develop unconventional oil and gas reservoirs in recent years. At the same time, new problems of casing deformation failure occurred. Based on the drilling and well completion data, microseismic surveillance data, theories of fracture mechanics, rock damage mechanics and rock failure criterion, this paper established a finite element model of the formation of effective stimulated reservoir volume, including clustering perforation casing for X-1 h shale gas horizontal well, to address the problems. The research results indicate: 1) the stress deficit of zero stress areas and tension stress areas occurred within the range of stimulated reservoir volume during the process of volume fracturing. And, the state of this stress deficit, which would make clustering perforation casings of horizontal wells "hanging" in the formation to some extent, resulted in certain degree of deflection deformation radically and S-shape deformation axially. 2) the problem of casing deformation failure remains fundamentally unsolvable through simply improving casing grade and wall thickness to increase flexural strength. 3) the key to solve casing deformation failure is the reasonable spacing design of multi-stage fracturing. The methods and achievements in the paper provide theoretical supports for the popularization and application of shale stimulated reservoir volume and controlling the S-shape deformation failures of the horizontal multi-cluster perforation casing. (C) 2015 Elsevier B.V. All rights reserved.
机译：近年来，体积压裂技术有效地帮助开发了非常规油气藏。同时，出现了套管变形破坏的新问题。基于钻井和完井数据，微震监测数据，断裂力学理论，岩石破坏力学和岩石破坏准则，建立了有效增产油层形成的有限元模型，包括X-1聚类射孔套管。 h页岩气水平井，以解决问题。研究结果表明：1）在体积压裂过程中，零应力区和张应力区的应力不足发生在受激储层体积范围内。并且，这种应力不足的状态将使水平井的丛集射孔套管“悬垂”在地层中，从而导致一定程度的挠曲变形和轴向S形变形。 2）通过简单地提高套管等级和壁厚以增加抗弯强度，套管变形破坏的问题仍然根本无法解决。 3）解决套管变形破坏的关键是合理的多段压裂间距设计。本文的方法和成果为页岩增产油藏的推广应用和控制水平多团射孔套管的S形变形破坏提供了理论依据。 （C）2015 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号