垂直裂缝储层防止裂缝滑移控制技术的实践与认识  

Practice and Acknowledge for Controlling Fracture Slide Tech to Vertical Crack Reservoir

作　　者：宋艳[1] 张兴华[1] 柏安福 王庆霞[1] 

机构地区：[1]大庆油田井下作业分公司,黑龙江大庆163453

出　　处：《油气井测试》2007年第z1期60-62,共3页Well Testing

摘　　要：对于垂直裂缝储层,若压裂施工的层位上下存在不等值的应力遮挡,施工过程中会产生裂缝向上或向下的滑移现象,裂缝穿过低应力部位时,由于裂缝宽度较窄,往往形成"过液不过砂"的现象,地面施工压力呈现一定斜率上升。本文论述了产生裂缝滑移的根本原因,利用变排量和压前注胶塞的两种方法,对防止裂缝滑移的控制技术进行尝试。在塔木查格盆地和深层火山岩压裂中,现场应用这两种技术实施4口井,取得成功。For vertically fractured reservoir, if the stratum exists un equivalent value of stress barrier up and down, it always happens slide appearance upwards and downwards. When fracture passing across low stress positions and because of narrower crack width, the phenomena of 'flow passing without sand passing' is formed which results in fracturing operating pressure at surface presenting an upward specified slope. The paper addresses an essential reason of producing fracture slide and utilizes two kinds of ways of variable displacement and squeezing gum plug before-fracturing trying to protect fracture slide. The two techniques have been used in fracture treatment of Tamtsag basin and deep volcanic rock and success has been gained by 4 wells applications.

关 键 词：裂缝滑移 变排量 胶塞 

分 类 号：TE27[石油与天然气工程—油气井工程] P631.81[天文地球—地质矿产勘探]