西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (4): 85-88.DOI: 10.3863/j.issn.1674 – 5086.2011.04.015

• 石油与天然气工程 • 上一篇    下一篇

水力喷射压裂孔内压力分布研究

曲 海1, 2, 李根生2, 黄中伟2, 刘祖林3, 石明杰3   

  1. 1. 中国石化石油工程技术研究院, 北京 朝阳 100101;2. 中国石油大学 ( 北京 ) 石油工程学院, 北京 昌平 102249;3. 中国石化中原油田分公司, 河南 濮阳 457001
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-08-20 发布日期:2011-08-20

Jetting Pressure Field in Formation Cavities during Hydrajet Fracturing

QU Hai1, 2, LI Gen-sheng2, HUANG Zhong-wei2, LIU Zu-lin3, SHI Ming-jie3   

  1. 1. Research Institute of Petroleum Engineering, SINOPEC, Chaoyang, Beijing 100101, China; 2. School of Petroleum Engineering,China University of Petroleum ( Beijing ) , Changping, Beijing 102249, China; 3. Zhongyuan Oilfield Company, SINOPEC, PuyangHenan 457001, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-08-20 Published:2011-08-20

摘要: 水力喷射压裂工艺是集水力射孔和压裂一体的新型油田增产技术。在室内实验基础上, 运用流体力
学计算方法, 对水力喷射压裂孔道内压力场进行计算, 得到了井下水力射流在地层孔道内的压力及速度分
布, 揭示了喷嘴空间位置、 喷嘴数量、 孔道形状、 喷嘴压降和喷嘴直径对孔道压力的影响规律。结果表明:
高速射流之间具有很强的独立性, 喷嘴空间位置和喷嘴数量不会影响孔道内压力; 水力射流在不同形状孔
道内产生的压力相同; 孔道压力随喷嘴压降和喷嘴直径的增大而增加。

关键词: 水力喷射压裂, 室内实验, 射流参数, 孔道压力, 流场模拟

Abstract: Hydrajet-fractruing is a new stimulation technique in oilfield. It is very necessary to study jet parameters.
Based on the experiments and computational method of fluid dynamics, the jet pressure field around a cavity has
been calculated. The velocity and pressure in cavity is obtained by fluid simulation. The following parameters were
analyzed: nozzle space location, the number of jet, cavity shape, differential pressure and nozzle diameter. The
result shows that the pressure in cavity will increase with the drop of nozzle pressure and the increase of nozzle
diameter. The jetting stream creates the same pressure in the cavities in spite of their different shapes. The location
and the number of nozzle have no influence to the cavity pressure. The conclusions can provide scientific basis for
the oilfield performance of hydrajet-fracturing.

Key words: hydrajet-fracturing, experiment, jet parameters, pressure distribution, fluid simulation17

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