首页 | 本学科首页   官方微博 | 高级检索  
     检索      

盐间非砂岩地层支撑裂缝长期导流能力实验研究
引用本文:陈勉,姜浒,张广清,金衍,张旭东.盐间非砂岩地层支撑裂缝长期导流能力实验研究[J].西安石油大学学报(自然科学版),2008,23(6).
作者姓名:陈勉  姜浒  张广清  金衍  张旭东
作者单位:1. 中国石油大学(北京)油气资源与探测国家重点实验室,北京,102249
2. 江汉油田分公司,井下作业处,湖北,潜江,433123
摘    要:盐间非砂岩地层是强度较低、塑性变形量大、流变性强的储层,如果支撑剂选择不当,支撑剂嵌入将很严重,支撑裂缝的长期导流能力将损失巨大.运用FCES-100裂缝导流仪,模拟盐间非砂岩地层的温度与闭合应力条件,采用3种支撑剂、2种铺砂浓度,进行了盐间非砂岩地层岩石的支撑裂缝长期导流能力实验.发现:盐间非砂岩地层的支撑剂嵌入问题较严重,有必要使用高铺砂浓度、优质以及大粒径的支撑剂,以获得更高的支撑裂缝长期导流能力.根据实验结果回归出了在70℃、20MPa闭合压力情况下,支撑裂缝导流能力随时间变化的关系式,可以用其来预测盐间非砂岩地层中支撑裂缝导流能力的衰减趋势,对现场压裂有一定指导意义.

关 键 词:盐间非砂岩  压裂缝长期导流能力  支撑剂选择  支撑剂浓度

Experimental study on the long-term flow conductivity of the hydraulic fractre in the non-sandstone reservior between salt formations
CHEN Mian,JIANG Hu,ZHANG Guang-qing,JIN Yan,ZHANG Xu-dong.Experimental study on the long-term flow conductivity of the hydraulic fractre in the non-sandstone reservior between salt formations[J].Journal of Xian Shiyou University,2008,23(6).
Authors:CHEN Mian  JIANG Hu  ZHANG Guang-qing  JIN Yan  ZHANG Xu-dong
Abstract:The non-sandstone reservoir between salt formations has lower strength,greater plastic deformation and strong rheology,so the long-term flow conductivity of the hydraulic fracture in this reservoir will greatly decrease if suitable proppant is not chosen.The long-term flow conductivity of the fracture in the non-sandstone cores is studied by simulation experiments FCES-100 fracture flow conductometer.In the experiments,the temperature and the closing stress in this type of reservoir are simulated,and three types of proppant of two concentrations are used.It is shown that there is serious proppant embedding in this type of reservoir.So the proppant of larger particle size and higher concentration should be used for increasing the long-term flow conductivity of the hydraulic fractures.The relationship between the flow conductivity and time at 70 ℃ and 20 MPa is obtained by the regression of experimental data,which can be used for the prediction of the decreasing tendency of the flow conductivity of the propped fractures in this type of reservoir and can provide guidance for field fracturing operation.
Keywords:non-sandstone reservoir between salt formations  long-term flow conductivity of hydraulic fracture  selection of proppant  concentration of proppant
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号